EP2806950A1 - Installing a safety line on a pitched roof - Google Patents

Installing a safety line on a pitched roof

Info

Publication number
EP2806950A1
EP2806950A1 EP13703904.6A EP13703904A EP2806950A1 EP 2806950 A1 EP2806950 A1 EP 2806950A1 EP 13703904 A EP13703904 A EP 13703904A EP 2806950 A1 EP2806950 A1 EP 2806950A1
Authority
EP
European Patent Office
Prior art keywords
guide member
pitched roof
safety line
user
roof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13703904.6A
Other languages
German (de)
French (fr)
Inventor
Hans Antonius Borra
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2806950A1 publication Critical patent/EP2806950A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0043—Lifelines, lanyards, and anchors therefore
    • A62B35/0068—Anchors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E04G21/3276—Arrangements on buildings for connecting safety-lines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E04G21/3276—Arrangements on buildings for connecting safety-lines
    • E04G21/328—Arrangements on buildings for connecting safety-lines fastened to the roof covering or insulation

Definitions

  • the invention relates to a method for installing a safety line on a pitched roof of a building, wherein it is possible to secure a user to the safety line.
  • the building may for example be a private house.
  • a saddle construction that is positioned on the ridge of a pitched roof.
  • a safety line is secured to the saddle construction.
  • a projectile for instance, a tennis ball is thrown over the roof with a rope attached thereto.
  • the rope has its other end attached to the saddle construction.
  • the saddle construction may be pulled upward by the rope in order to position the saddle construction on the ridge of the roof.
  • this goal has been realized by a method for installing a safety line on a pitched roof of a building, wherein the pitched roof comprises a ridge, and wherein it is possible to secure a user to the safety line, and wherein use is made of:
  • the guide member comprises a lower en and an upper end, and wherein the guide member has a bending stiffness larger than the bending stiffness of the safety line
  • the installing of the guide member for the safety line on the pitched roof in such a manner that the lower end thereof is installed on a low-lying position on the pitched roof which level can be reached by the user by hand without the user setting or having to set foot on the pitched roof, and the upper end thereof is installed on an elevated level on the pitched roof that, viewed in a roof pitching direction of the pitched roof, lies higher than the low-lying level and cannot be reached by the user by hand without the user set- ting foot on the roof,
  • the safety line is guided over the ridge of the pitched roof by means of the guide member.
  • the user stands for instance on a ladder resting against the roof-gutter of the pitched roof.
  • the guide member is laid down on the pitched roof, for instance in the roof pitching direction of the pitched roof or slightly slanted with respect to the roof pitching direction of the pitched roof.
  • the lower end of the guide member can be reached by the user on the ladder by hand without the user setting or having to set foot on the pitched roof.
  • the user inserts a head end of the security line in the guide member, via the lower end of the guide member, and subsequently the safety line is pushed through the guide member from the lower end toward the upper end of the guide member.
  • the security line fits, preferably snugly, in the guide member.
  • the safety line remains locked in the guide member, during its being pushed there through. The pushing is continued in order to make the safety line emerge from the upper end.
  • the inner diameter of the guiding member is at most twice the diameter of the safety line.
  • the upper end of the guide member is installed such that the part of the safety line that is pushed out of the upper end is guided over the ridge of the pitched roof.
  • the upper end is for instance above the ridge and/or, viewed from the lower end, positioned beyond the ridge.
  • the user fastens that part of the safety line subsequently at the low-lying position to the building.
  • the safety line then is anchored to the building, with as a result that the user is enabled to secure her to the safety line before the user sets foot on the pitched roof.
  • This method according to the invention meets the safety regulations, since it is not necessary to set foot on the pitched roof in order to install the safety line. Additionally, the installation of the safety line according to the invention is very simple and cheap, because only the guide member is used as an aid. As a result of this, roof workers will sooner tend to apply the method according to the invention in practice. The fine, risked by roof workers when they break the safety regulations, and the corresponding risks of falling dangerously do not make up for the low costs of the method according to the invention.
  • FR 2876129 describes that at the first time a roof worker sets foot on the pitched roof, she is of ⁇ ten not secured. Only after the roof worker has installed a rope on the pitched roof, working safely becomes possible. Therefore a rod with a hook part at the end thereof is ridden over a pitched roof by a set of wheels. An eye is mounted to the hook part, with a rope attached to the eye. The hook part may be hooked behind a chimney on the pitched roof or behind the ridge of the pitched roof. Subsequently the roof worker may grab hold of the rope and climb upward over the roof.
  • the installation of the rod with the hook part behind the chimney or ridge is difficult and heavy. After all, in practice the rod is of considerable length. Moreover, the roof worker is not capable of seeing or otherwise estab- lishing whether the hook part is installed properly and fixed firmly behind the chimney or the ridge. Obviously a risk of falling is present if the hook, part was not installed properly behind the chimney or the ridge. Furthermore, even when the hook part is indeed properly installed, a risk still ex- ists of the hook part coming loose when the roof worker falls, since the ridge has no secure anchoring point. At a . tiled roof, the ridge may for example become detached or break. Apart from that, it is also not known from this document that the rope is pushed upward by means of a guide member.
  • the pitched roof constitutes a saddle roof with two pitched roof planes which are mutually connected by the ridge, wherein the guide member for the safety line is installed on one of the pitched roof planes of the pitched roof, and wherein the part of the safety line that is pushed out of the upper end
  • a saddle roof is the most common kind of roof in The Netherlands and Belgium, especially in the traditional construction industry.
  • the invention is also applicable at other kinds of roofs, for instance a pent roof, a gable roof, a shell roof, or yet other roof configurations.
  • a pent roof is a pitched roof with one inclined roof surface only.
  • a gabled roof is a pitched roof with four or more triangular pitched roof planes coming together at a single point.
  • the pitched roof for example one of the above-mentioned roof shapes, may be mounted on two parallel outer walls. Instead, it is also possible that the pitched roof, for example one of the above-mentioned roof shapes, links up at one or more sides to a horizontal plane, such as a flat roof or the floor.
  • the ridge may protrudes above the plane of the pitched roof, wherein the guide member is provided with a curved top portion that comprises the upper end, and wherein the curved portion extends from the plane of the pitched roof on which the guide member is arranged upwardly, and wherein the curvature of the curved portion is carried out in such a way, that the safety line is guided over the ridge of the pitched roof.
  • the part of the safety line that has an increasing length and is being pushed out of the upper end (upper end) of the guide member does not get stuck against the ridge, but is led through the curved part over the ridge. As a result, it is guaranteed that the safety line is installed over the ridge.
  • the pitched roof planes of the pitched roof determine an intersection curve and the ridge protrudes above this intersection curve of the pitched roof planes.
  • the plane of the pitched roof in which the guide member is arranged is located at a front side of the ridge, wherein the building comprises a facade which is located at a rear side of the ridge lying opposite to the front side, and wherein the low position where the part of the safety line is attached to the building by the user, is located at that facade.
  • that low-lying position lies at a verti- cal distance from the bottom of that fagade less than 2 meter, for instance less than 1 meter.
  • the fastening to the facade is at a relatively large distance of the roof gutter or the ridge of the pitched roof.
  • the part of the safety line protrudes nearly vertically upward along the facade, with as a result that the force exerted by the security line on the attachment is oriented lateral with respect to the at- tachment to the facade. Therefore, the attachment is capable of accommodating large forces of falling. Additionally, the user is enabled to reach the attachment without using a ladder or similar aiding means.
  • the guide means for leading the safety line around an object that is installed on the pitched roof, for example a chimney.
  • the safety line is not led over the ridge of the pitched roof, but led back around the object.
  • the invention therefore also relates to a method for installing a safety line on a pitched roof of a building, wherein the pitched roof comprises a ridge, and wherein the pitched roof is provided with an object that protrudes upward from the pitched roof, such as a chimney, and wherein it is possible to secure a user to the safety line, and wherein use is made of:
  • the guide member has a lower end and an upper end, and wherein the guide member has a bending stiffness which is larger than the bending stiffness of the safety line,
  • the guide member for the safety line on the pitched roof such that the lower end thereof is mounted on a low-lying level on the pitched roof that can be reached by the user by hand without the user setting or having to set foot on the pitched roof, and the upper end thereof is installed on an elevated level on the pitched roof which, viewed in a roof pitching direction of the pitched roof, is located above the low-lying level, and cannot be reached by the user by hand without the user having to set foot on the pitched roof,
  • the plane of the pitched roof on which the guide member is installed may be present at a front side of the ridge, wherein the building comprises a facade, that is present at the front side of the ridge, and wherein the low-lying position of the part of the safety line is attached to the building by the user is at the front side at that fa ⁇ cade.
  • That low-lying position may also lie at a vertical distance of the bottom of that facade which is less than 2 meter, preferably less than 1 meter.
  • the head end of the safety line is provided with a coupling piece which can be coupled with an anchoring member that is attached to said wall at the low-lying position, wherein the coupling piece is connected to anchoring member secured to that fa- ade.
  • the coupling piece and the anchoring member may be mutually connected by means of a form closed connection.
  • the coupling member may for instance be clicked of snapped to the anchoring member.
  • the anchoring member attached to the building may be a steel component, preferably arranged to be permanently anchored in the building, which steel component is provided with a plug-in bore that is open at an outwardly facing plug- in side, wherein the coupling piece comprises a pen fitting therein, preferably in such a manner that the pen, when in use, is approximately perpendicular to the tensile force of the safety line.
  • a locking provision is provided that is effective between the pen and the component and that keeps the inserted pen at its position, for example a springy locking provision that locks automatically (light) when the pen is inserted.
  • the locking mechanism may for instance produce a specific sound when the pen is inserted correctly.
  • an expelling provision that drives the pen outward as long as the pen is not locked, such as an ex- pelling spring.
  • the safety line is freely rotatable around a protruding end of the pen at its end that is connected to the pen.
  • the low- lying position where the part of the safety line that has been pushed out of the upper end of the guide member in an upward direction is attached to the building by the user, is located at a roof gutter of the pitched roof.
  • an engaging member be installed at the head end of that part of the safety line.
  • the engaging part may be brought in engagement with the roof gutter of the pitched roof in order to attach that part of the safety line.
  • the engagement member may for example be hook shaped in order to be fixed by hooking behind the roof gutter.
  • the guide member is movable between a retracted position and an extended posi- tion, wherein at the installation of the guide member on the pitched roof first the guide member is placed on the pitched roof in the retracted position, and subsequently the guide member is moved from the retracted position toward the extended position.
  • the guide member is for example telescopically movable between the retracted and the extended position .
  • the lower end of the guide member In the extended position the lower end of the guide member is at the low-lying level on the pitched roof that is reachable for the hand of the user without the user setting or having to set foot on the pitched roof, while the upper end of the guide member is at the elevated level on the pitched roof, that, viewed in the roof pitch direction of the pitched roof, is higher than the low-lying level and cannot be reached by the user by hand without the user setting foot on the pitched roof.
  • the guide member comprises for instance a running wheel that rides upward during the sliding of the guide member from the retracted position to the extended position over the pitched roof. This enables the user to move the guide member simply and without much effort to the extended position by hand .
  • the guide member be drivable by a driving device between the retracted position and the extended position.
  • the drive motor may for instance be an electromotor.
  • the guide member is installed at a ladder that is positioned against the building.
  • the guide member may be pivotally connected to the ladder.
  • the guide mem ⁇ ber may be adapted to the roof inclination of the pitched roof.
  • the guide member is preferably installed to the post of the ladder.
  • the ladder may for example stand against the facade of the building or against the pitched roof, in
  • the roof gutter thereof While the user is standing on the ladder, she lays the guide member on the pitched roof. In particular when the guide member is extending, reaction forces are exerted on the user and the ladder during the extending. The weight of the user and ladder forms a counter- weight, stabilizing the user and the ladder.
  • the guide member may for instance be provided with a measuring instrument for measuring the length of the safety line that has been pushed through the guide member, such as a measuring wheel.
  • the safety line may be provided with length markings, for instance indicating centimeters, decimeters and/or meters.
  • the safety line has, in a slack state, a radius of curvature which is smaller than 1 m, preferably smaller than 50 centimeters.
  • the roof gutter protrudes horizontally somewhat from the pitched roof.
  • the safety line may be carried out in various ways according to the invention.
  • the safety line is for example formed by a cable, rope, line or flat strip.
  • the safety line may be made of plastic, such as polyester.
  • the safety line preferably satisfies the NEN-EN 795. Such a safety line is capable of carrying high loads, which occur when a user that is secured to the lifeline falls from the pitched roof.
  • the guide member may also be carried out in various ways.
  • the guide member may for instance be tubular. In this case, the guide member has a closed cross-section, thereby locking the safety line that is pushed through the guide member within the guide member.
  • the guide member may for instance comprise a shaft profile.
  • the guide member may also be gutter shaped in combination with a flat strip- shaped safety line.
  • the guide member may be produced of plastic, for instance carbon.
  • the user may, after she has attached the part of the safety line that has been pushed out of the upper end of the guide means at the low-lying position at the building, secure her to the safety line on the pitched roof.
  • the user may for example wear a safety harness that is connected to the safety line on the pitched roof by means of a line and a line clamp.
  • the invention also relates to a building, comprising:
  • the guide member has a lower end and an upper end, and wherein the guide mem- ber has a bending stiffness which is larger than the bending stiffness of the safety line,
  • the guide means for the safety line is provided on the pitched roof, in such a manner that the lower end thereof is installed on a low-lying level on the pitched roof that can be reached by the hand of a user without the user setting foot on or having to set foot on the pitched roof, and the upper end thereof is installed on an elevated level on the pitched roof which, viewed in a roof pitching direction of the pitched roof, is located above the low-lying level, and cannot be reached by the user by hand without the user having to set foot on the pitched roof.
  • the pitched roof of the building according to the invention may safely be set foot on, as described above on the basis of the method of installing a safety line on a pitched roof of a building.
  • the features, advantages and technical effects also apply to the building according to the invention.
  • the safety line is pushed through the guide member from the lower end to the up- per end in such a manner that a part of the safety line is pushed from the upper end of the guide member, and wherein that part of the safety line is guided over the ridge of the pitched roof and subsequently led downward to a low-lying location that is located below the elevated level, that can be reached by the user by hand without the user having to set foot on the pitched roof, and wherein the portion of the safety that is pushed out of the upper end of the guide member and has been moved toward the low-lying position without the user setting or having to set foot on the pitched roof is attached to the building at the low-lying place.
  • the pitched roof is provided with an object that protrudes upwardly from the pitched roof, such as a chimney, and wherein the safety line has been pushed through the guide member from the lower end to the upper end of the guide member is pushed, that a portion of the safety line has been pushed from the upper end of the guide member, and wherein said portion of the safety line has been guided around the object and subsequently downward to a low-lying position located below the elevated level, that can be reached by the user by hand without the user setting or having to set foot on the pitched roof, and wherein the part of the safety line that has been pushed out of the upper end of the guide member has been guided around the object and moved toward the low-lying position without the user setting or having to set foot on the pitched roof by the user at the low-lying position on the building.
  • an object that protrudes upwardly from the pitched roof such as a chimney
  • the invention further relates to a fall protection system for use in a pitched roof of a building, comprising:
  • a safety line which can be positioned on the pitched roof of the building, wherein the safety line has been fitted for the securing of a user
  • the guide means has a lower end and an upper end
  • the guide member has a bending stiffness which is larger than the bending stiffness of the safety line
  • the safety line, and the guide means are designed in such a manner that the safety line is movable through the guide means by applying a pushing force at the lower end of the guide means away from the lower end to the upper end of the guide member.
  • the guide means is movable between a re- tracted position and an extended position, for instance telescopically movable. While that guide member is capable of bridging the distance from the roof gutter to the ridge, viewed in the roof pitching direction, the guide member occupies relatively little space in the retracted position.
  • the guide member is provided with a pushing mechanism that is driven by hand or preferably by an (electro-)motor for the safety line, for instance with a mechanism provided with one of more driving wheels engaging the safety line.
  • an electromotor is provided, possibly with a corresponding (rechargeable) battery.
  • the pushing mechanism is coupled to an electrical screwing and/or drilling machine with possibly a rechargeable battery as a driving motor.
  • a manual drive could for instance be provided with a handle.
  • the mechanism is preferably mounted near the lower end of the guide member, with as a result that both the operation thereof and the engagement on the safety line occur close to the lower end.
  • the fall protection system comprises a ladder, wherein the guide mem- ber can be releasably connected to the ladder, for instance by means of a hinge. It is also possible to provide the fall protection system according to the invention with a bag that can be carried by the user, wherein the safety line is fold- able or rollable in such a manner that it is possible to accommodate it in the bag. When the guide member is made extendable, the guide member may be stowed away in the
  • Figure 1 shows a building with a pitched roof that is to be repaired, and a user with a fall protection system according to the invention.
  • Figure 2 shows the building shown in Figure 1, wherein the user installs a safety line of the fall protection system according to the invention on the pitched roof.
  • FIG 3 shows the building shown in Figure 1, wherein the safety line is installed on the pitched roof and the user is secured to the safety line.
  • the building 1 shown in Figure 1 constitutes a private house.
  • the building 1 comprises a pitched roof 2, which is constructed in this embodiment as a saddle roof.
  • the pitched roof 2 comprises two slanted roof planes or roof shields 3, 4 on the front side respectively the rear side of the building 1.
  • the two inclined roof planes 3, 4 meet at a ridge 10, while the pitched roof 2 is bounded by gutters 8 at the bottom side.
  • On the pitched roof 2 a chimney 9 is provided.
  • the pitched roof 2 is mounted on facades 5 at the front respectively rear side of the building 1.
  • the pitched roof 2 is damaged - in the pitched roof 2 is a gap 11, in this embodiment.
  • a user or roof worker 12 For repairing the damaged pitched roof 2, a user or roof worker 12 must set foot on the pitched roof 2.
  • the pitched roof 2 lacks any form of integrated roof safety. Therefore, the user 12 carries a fall protection system according to the invention with him.
  • the fall protection system according to the invention comprises in this embodiment a ladder 14, and a carrying case 34 in which a safety line 20 and a guide member 16 for the safety line 20 are stored.
  • the safety line 20 may for example be a plastic rope or cable.
  • the safety line 20 comprises a coupling piece 21 to the front end or head end thereof.
  • the safety line 20 has a bending stiffness such that the safety line 20 is foldable or rollable, for example with a radius of curvature which is smaller than 30 cm, such that the folded- up or rolled-up safety line 20 fits in the carrying bag 34.
  • the guide member 16 includes, for example multiple tubular rods, which are mutually telescopically connected.
  • the guide member 16 has a bending stiffness that is larger than the bending stiffness of the safety line 20.
  • the safety line 20 fits neatly into the guide member 16.
  • the outer diameter of the safety line 20 is adapted to the inner diameter of the guide member.
  • the thickness of the annular gap between the outer diameter of the safety line 20 and the inner diameter of the guide member 16 is for example smaller than the outer diameter of the safety line 20, preferably less than 5 mm.
  • the guide member 16 includes, for example tube-shaped rods made of metal or plastic, such as carbon.
  • the guide member 16 is movable between a retracted position and an extended position. In the carrying bag 34 the guide member 15 is in the retracted position.
  • the user places 12 the ladder 14 against the roof gutter 8 of the pitched roof 2.
  • the guide member 16 includes a lower end 23 and an upper end 24. While the guide member 16 is in the retracted position, the guide member 16 in this example, first at the lower end 23 thereof is connected to the ladder, here pivotally and detachably, here with a step or post of the ladder 14. As a result of the hinged connection, the guide member 16 may follow the roof inclination of the pitched roof 2 and be placed flat on the pitched roof 2.
  • the guide member 14 is extended manually or by means of a driving device (not shown) from the re- tracted position to the extended position.
  • the guide member 16 comprises an upper curved portion 17 which is provided with the upper end 24.
  • the upper end 24 of the guide member 14 lies above the ridge 10 when in the extended position.
  • the upper end 24 may in the extended position, also lie at a distance from the ridge 10, for example, a distance which is smaller than about 1 meter or 50 centimeter (not shown) .
  • the user inserts the safety line 12 with the coupling piece 21 to the head end of the safety line 20 via the lower end 23 of the guide member 16 in the guide member 16.
  • the coupling piece 21 has an embodiment adapted to the diameter of the member 16.
  • the dimensions and the bending stiffness of the safety line 20 and the guide member 16 are such that the safety line 20 can be pushed through the guide member 16.
  • the user possibly a pushing mechanism, pushes the safety line 20 through the guide member 16 away from the lower end 23 to the upper end 24.
  • the user continues to push so that the coupling piece 21 of the safety line 20 emerges from the upper end 24 of the guide member 16, and is guided over the ridge 10 of the pitched roof 2.
  • the part of the safety line 20 having an increasing length and coming out or the upper end 24 of the guide member 16 moves along the slanted roof plane 4 down- ward on the back side. That part of the safety line 20 subsequently moves across the gutter 8 of the slanted roof plane 4 at the back side, and subsequently along the facade 6 on the rear side downward.
  • an anchoring member 26 is provided (see Figure 3a) .
  • the anchoring member 26 is located in a wall.
  • the body 26 is preferably arranged at a vertical dis- tance above the ground which is smaller than 50 cm.
  • the coupling piece 21 at the head end of the safety line 20 may be connected to the anchoring member 26.
  • the safety line 20 thus is firmly secured to the building 1.
  • the user 12 is wearing a safety harness 31. While the user 12 still stands on the ladder 14, he connects the safety harness via a line 32 and a line clamp 30 to the safety line 20. The user 12 then is safely secured to the safety line 20. Then the user 12 may set foot on the pitched roof 2 safely.
  • the guide member is provided with a manually or, preferably, (electro-) motor driven pushing mechanism for the safety line, for example with a mechanism with one or more driving wheels engaging the safety line.
  • a manually or, preferably, (electro-) motor driven pushing mechanism for the safety line for example with a mechanism with one or more driving wheels engaging the safety line.
  • an electric motor possibly with a corresponding (rechargeable) battery.
  • the pushing mechanism is coupled with an electric screwing and / or drilling machine, possibly with a rechargeable battery as the drive motor.
  • a manual drive could for example be equipped with a hand crank.
  • the mechanism is arranged near the lower end of the guide member.
  • the fall protection system according to the invention can be applied to the safety line 20 to the chimney 9 of the pitched roof 2 to lead.
  • the coupling piece 21 to the head end of the safety line 20 is in this case mounted in an anchoring member at the facade 5 at the front side (not shown) .
  • the fall protection system according to the invention is also applicable in other roof configurations than the gable roof shown in the Figures.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Ladders (AREA)
  • Emergency Lowering Means (AREA)

Abstract

A method for the installation of a safety line on a pitched roof of a building for securing a user. Use is made of a guide member for the safety line, comprising a lower end and an upper end. The guide member has a bending stiffness which is larger than that of the safety line. The guide member is installed on the roof, in such a way that the lower end can be reached by hand without having to set foot on the pitched roof, and such that the upper end is located at an elevated level on the pitched roof. The safety line is pushed upward by the guide member in order to push an increasingly long part of the safety line out of the upper end of the guide member. That part is guided over the ridge of a pitched roof and subsequently attached to the building by the user.

Description

INSTALLING A SAFETY LINE ON A PITCHED ROOF
The invention relates to a method for installing a safety line on a pitched roof of a building, wherein it is possible to secure a user to the safety line. The building may for example be a private house.
At present, in the building of new houses, it is possible to integrate safety provisions in the pitched roof of a building, for example below the ridge of the pitched roof, for enabling safe operations on the pitched roof, for instance for repair and maintenance. For this purpose it is necessary to make additional investments in roof safety. On existing (old) roofs any kind of roof safety is almost always absent, while in practice especially these roofs have the highest need for repairs and maintenance. Due to safety regulations it is not allowed to set foot on a pitched roof without being secured. Therefore, it is in fact necessary to install a scaffold of to apply a tower wagon when working on a pitched roof to prevent violation of the regulations. How- ever, this is expensive and time-consuming, which is the reason why it is hardly done in practice. By doing so, roof workers do not only take the risk of obtaining a fine, but also take risks of falling dangerously.
From GB 2334292 a saddle construction is known, that is positioned on the ridge of a pitched roof. A safety line is secured to the saddle construction. In order to position the saddle construction on the ridge of the roof, a projectile, for instance, a tennis ball is thrown over the roof with a rope attached thereto. The rope has its other end attached to the saddle construction. The saddle construction may be pulled upward by the rope in order to position the saddle construction on the ridge of the roof. However, for many roofs it is difficult, if not impossible, to obtain the projectile with the rope attached thereto over the pitched roof.
It is a goal of the invention to provide an improved method for installing a safety line on a pitched roof of a building.
According to the invention this goal has been realized by a method for installing a safety line on a pitched roof of a building, wherein the pitched roof comprises a ridge, and wherein it is possible to secure a user to the safety line, and wherein use is made of:
- a guide member for the safety line, wherein the guide member comprises a lower en and an upper end, and wherein the guide member has a bending stiffness larger than the bending stiffness of the safety line,
and which method comprises:
- the installing of the guide member for the safety line on the pitched roof, in such a manner that the lower end thereof is installed on a low-lying position on the pitched roof which level can be reached by the user by hand without the user setting or having to set foot on the pitched roof, and the upper end thereof is installed on an elevated level on the pitched roof that, viewed in a roof pitching direction of the pitched roof, lies higher than the low-lying level and cannot be reached by the user by hand without the user set- ting foot on the roof,
- pushing the safety line through the guide member from the lower end to the upper end of the guide member, and wherein this pushing is continued to push a part with an increasing length out of the upper end of the guide member, and wherein that part of the safety line is guided over the ridge of the pitched roof and subsequently downward toward a low-lying position that is below the elevated level and can be reached by the user by hand without the user having to set foot on the pitched roof, - the fastening by the user at the low position, preferably at the building, of the part of the safety line that has been pushed out of the upper end of the guide member and has been moved toward the low-lying position without the user setting foot or having to set foot on the pitched roof for this purpose .
According to the invention, the safety line is guided over the ridge of the pitched roof by means of the guide member. The user stands for instance on a ladder resting against the roof-gutter of the pitched roof. The guide member is laid down on the pitched roof, for instance in the roof pitching direction of the pitched roof or slightly slanted with respect to the roof pitching direction of the pitched roof. The lower end of the guide member can be reached by the user on the ladder by hand without the user setting or having to set foot on the pitched roof.
The user inserts a head end of the security line in the guide member, via the lower end of the guide member, and subsequently the safety line is pushed through the guide member from the lower end toward the upper end of the guide member. The security line fits, preferably snugly, in the guide member. The safety line remains locked in the guide member, during its being pushed there through. The pushing is continued in order to make the safety line emerge from the upper end. Preferably the inner diameter of the guiding member is at most twice the diameter of the safety line.
The upper end of the guide member is installed such that the part of the safety line that is pushed out of the upper end is guided over the ridge of the pitched roof. The upper end is for instance above the ridge and/or, viewed from the lower end, positioned beyond the ridge. For that matter, it is also possible to have the upper end at a distance in front of the ridge, viewed from the lower end, for instance a dis¬ tance smaller than 1 meter or smaller than 50 cm. By pushing even further, that part of the safety line moves downward under the influence of gravity, from the ridge toward a low-lying position that the user may again reach by hand. Without the user setting or having to set foot on the pitched roof, the user fastens that part of the safety line subsequently at the low-lying position to the building. The safety line then is anchored to the building, with as a result that the user is enabled to secure her to the safety line before the user sets foot on the pitched roof.
This method according to the invention meets the safety regulations, since it is not necessary to set foot on the pitched roof in order to install the safety line. Additionally, the installation of the safety line according to the invention is very simple and cheap, because only the guide member is used as an aid. As a result of this, roof workers will sooner tend to apply the method according to the invention in practice. The fine, risked by roof workers when they break the safety regulations, and the corresponding risks of falling dangerously do not make up for the low costs of the method according to the invention.
It is noted that FR 2876129 describes that at the first time a roof worker sets foot on the pitched roof, she is of¬ ten not secured. Only after the roof worker has installed a rope on the pitched roof, working safely becomes possible. Therefore a rod with a hook part at the end thereof is ridden over a pitched roof by a set of wheels. An eye is mounted to the hook part, with a rope attached to the eye. The hook part may be hooked behind a chimney on the pitched roof or behind the ridge of the pitched roof. Subsequently the roof worker may grab hold of the rope and climb upward over the roof.
However, the installation of the rod with the hook part behind the chimney or ridge is difficult and heavy. After all, in practice the rod is of considerable length. Moreover, the roof worker is not capable of seeing or otherwise estab- lishing whether the hook part is installed properly and fixed firmly behind the chimney or the ridge. Obviously a risk of falling is present if the hook, part was not installed properly behind the chimney or the ridge. Furthermore, even when the hook part is indeed properly installed, a risk still ex- ists of the hook part coming loose when the roof worker falls, since the ridge has no secure anchoring point. At a . tiled roof, the ridge may for example become detached or break. Apart from that, it is also not known from this document that the rope is pushed upward by means of a guide member.
According to the invention, it is also possible that the pitched roof constitutes a saddle roof with two pitched roof planes which are mutually connected by the ridge, wherein the guide member for the safety line is installed on one of the pitched roof planes of the pitched roof, and wherein the part of the safety line that is pushed out of the upper end
of the guide member over the ridge toward the other pitched roof plane of the pitched roof and subsequently over that other pitched roof plane, viewed in the roof pitching direction of the other pitched roof plane of the pitched roof, moves downwards and toward the low position.
A saddle roof is the most common kind of roof in The Netherlands and Belgium, especially in the traditional construction industry. The invention is also applicable at other kinds of roofs, for instance a pent roof, a gable roof, a shell roof, or yet other roof configurations. A pent roof is a pitched roof with one inclined roof surface only. A gabled roof is a pitched roof with four or more triangular pitched roof planes coming together at a single point. Also, the pitched roof, for example one of the above-mentioned roof shapes, may be mounted on two parallel outer walls. Instead, it is also possible that the pitched roof, for example one of the above-mentioned roof shapes, links up at one or more sides to a horizontal plane, such as a flat roof or the floor. According to the invention, the ridge may protrudes above the plane of the pitched roof, wherein the guide member is provided with a curved top portion that comprises the upper end, and wherein the curved portion extends from the plane of the pitched roof on which the guide member is arranged upwardly, and wherein the curvature of the curved portion is carried out in such a way, that the safety line is guided over the ridge of the pitched roof. The part of the safety line that has an increasing length and is being pushed out of the upper end (upper end) of the guide member, does not get stuck against the ridge, but is led through the curved part over the ridge. As a result, it is guaranteed that the safety line is installed over the ridge. In the case of a saddle roof the pitched roof planes of the pitched roof determine an intersection curve and the ridge protrudes above this intersection curve of the pitched roof planes.
According to the invention, it is possible that the plane of the pitched roof in which the guide member is arranged is located at a front side of the ridge, wherein the building comprises a facade which is located at a rear side of the ridge lying opposite to the front side, and wherein the low position where the part of the safety line is attached to the building by the user, is located at that facade. Preferably, that low-lying position lies at a verti- cal distance from the bottom of that fagade less than 2 meter, for instance less than 1 meter.
Because the part of the security line is attached by the user to the building at a distance of no more than 2 meter above the ground level, the fastening to the facade is at a relatively large distance of the roof gutter or the ridge of the pitched roof. As a result of this, the part of the safety line protrudes nearly vertically upward along the facade, with as a result that the force exerted by the security line on the attachment is oriented lateral with respect to the at- tachment to the facade. Therefore, the attachment is capable of accommodating large forces of falling. Additionally, the user is enabled to reach the attachment without using a ladder or similar aiding means.
According to the invention, it is also possible to use the guide means for leading the safety line around an object that is installed on the pitched roof, for example a chimney. In that case, the safety line is not led over the ridge of the pitched roof, but led back around the object. The invention therefore also relates to a method for installing a safety line on a pitched roof of a building, wherein the pitched roof comprises a ridge, and wherein the pitched roof is provided with an object that protrudes upward from the pitched roof, such as a chimney, and wherein it is possible to secure a user to the safety line, and wherein use is made of:
- a guide member for the safety line, wherein. the guide member has a lower end and an upper end, and wherein the guide member has a bending stiffness which is larger than the bending stiffness of the safety line,
and which method comprises:
- installing of the guide member for the safety line on the pitched roof, such that the lower end thereof is mounted on a low-lying level on the pitched roof that can be reached by the user by hand without the user setting or having to set foot on the pitched roof, and the upper end thereof is installed on an elevated level on the pitched roof which, viewed in a roof pitching direction of the pitched roof, is located above the low-lying level, and cannot be reached by the user by hand without the user having to set foot on the pitched roof,
- pushing the safety line through the guide member from the lower end toward the upper end of the guide member, and wherein this pushing is continued in order to push an increasingly long part of the safety line out of the upper end of the guide member, and wherein that part of the lifeline is led around the object of the pitched roof and subsequently down to a low-lying position located below the elevated level and accessible for the hand of the user without the user having to set foot on the pitched roof,
- attaching by the user at the low-lying position, preferably to the building, of the part of the safety line that has been pushed out of the upper end of the guide member, has been led around the object and has been moved toward the low-lying position without the user setting foot or having to set foot on the pitched roof.
Also in this case the plane of the pitched roof on which the guide member is installed may be present at a front side of the ridge, wherein the building comprises a facade, that is present at the front side of the ridge, and wherein the low-lying position of the part of the safety line is attached to the building by the user is at the front side at that fa¬ cade. That low-lying position may also lie at a vertical distance of the bottom of that facade which is less than 2 meter, preferably less than 1 meter. The aforementioned ad- vantages also apply to this embodiment.
In an embodiment according to the invention the head end of the safety line is provided with a coupling piece which can be coupled with an anchoring member that is attached to said wall at the low-lying position, wherein the coupling piece is connected to anchoring member secured to that fa- ade. Preferably, the coupling piece and the anchoring member may be mutually connected by means of a form closed connection. The coupling member may for instance be clicked of snapped to the anchoring member.
The anchoring member attached to the building may be a steel component, preferably arranged to be permanently anchored in the building, which steel component is provided with a plug-in bore that is open at an outwardly facing plug- in side, wherein the coupling piece comprises a pen fitting therein, preferably in such a manner that the pen, when in use, is approximately perpendicular to the tensile force of the safety line. Preferably a locking provision is provided that is effective between the pen and the component and that keeps the inserted pen at its position, for example a springy locking provision that locks automatically (light) when the pen is inserted. The locking mechanism may for instance produce a specific sound when the pen is inserted correctly. Possibly an expelling provision is provided that drives the pen outward as long as the pen is not locked, such as an ex- pelling spring. In an embodiment, the safety line is freely rotatable around a protruding end of the pen at its end that is connected to the pen.
According to the invention, it is possible that the low- lying position, where the part of the safety line that has been pushed out of the upper end of the guide member in an upward direction is attached to the building by the user, is located at a roof gutter of the pitched roof. There may for instance an engaging member be installed at the head end of that part of the safety line. The engaging part may be brought in engagement with the roof gutter of the pitched roof in order to attach that part of the safety line. The engagement member may for example be hook shaped in order to be fixed by hooking behind the roof gutter. In order to attach the engagement member simply at the head end of the safety line, it is possible to provide the head end of the safety line with a coupling piece that can be coupled with an accommodating part of the engagement member.
In a preferred embodiment of the invention, the guide member is movable between a retracted position and an extended posi- tion, wherein at the installation of the guide member on the pitched roof first the guide member is placed on the pitched roof in the retracted position, and subsequently the guide member is moved from the retracted position toward the extended position. The guide member is for example telescopically movable between the retracted and the extended position .
In the extended position the lower end of the guide member is at the low-lying level on the pitched roof that is reachable for the hand of the user without the user setting or having to set foot on the pitched roof, while the upper end of the guide member is at the elevated level on the pitched roof, that, viewed in the roof pitch direction of the pitched roof, is higher than the low-lying level and cannot be reached by the user by hand without the user setting foot on the pitched roof.
The guide member comprises for instance a running wheel that rides upward during the sliding of the guide member from the retracted position to the extended position over the pitched roof. This enables the user to move the guide member simply and without much effort to the extended position by hand .
For that matter, it is also possible to let the guide member be drivable by a driving device between the retracted position and the extended position. The drive motor may for instance be an electromotor.
According to the invention, it is possible that the guide member is installed at a ladder that is positioned against the building. Here the guide member may be pivotally connected to the ladder. As a result of this, the guide mem¬ ber may be adapted to the roof inclination of the pitched roof. The guide member is preferably installed to the post of the ladder. The ladder may for example stand against the facade of the building or against the pitched roof, in
particular the roof gutter thereof. While the user is standing on the ladder, she lays the guide member on the pitched roof. In particular when the guide member is extending, reaction forces are exerted on the user and the ladder during the extending. The weight of the user and ladder forms a counter- weight, stabilizing the user and the ladder. According to the invention, it is possible that during the pushing of the safety line through the guide member, the length of the safety line that has been pushed through the guide member is measured. The guide member may for instance be provided with a measuring instrument for measuring the length of the safety line that has been pushed through the guide member, such as a measuring wheel. Additionally the safety line may be provided with length markings, for instance indicating centimeters, decimeters and/or meters.
In an embodiment the safety line has, in a slack state, a radius of curvature which is smaller than 1 m, preferably smaller than 50 centimeters. The roof gutter protrudes horizontally somewhat from the pitched roof. By selecting a radius of curvature that is sufficiently small, in a slack state, is it prevented that the safety line gets stuck in the roof gutter during the transfer downward along the pitched roof.
The safety line may be carried out in various ways according to the invention. The safety line is for example formed by a cable, rope, line or flat strip. The safety line may be made of plastic, such as polyester. The safety line preferably satisfies the NEN-EN 795. Such a safety line is capable of carrying high loads, which occur when a user that is secured to the lifeline falls from the pitched roof.
The guide member may also be carried out in various ways. The guide member may for instance be tubular. In this case, the guide member has a closed cross-section, thereby locking the safety line that is pushed through the guide member within the guide member. The guide member may for instance comprise a shaft profile. However, the guide member may also be gutter shaped in combination with a flat strip- shaped safety line. In order to keep the weight of the guide member low, the guide member may be produced of plastic, for instance carbon. According to the invention the user may, after she has attached the part of the safety line that has been pushed out of the upper end of the guide means at the low-lying position at the building, secure her to the safety line on the pitched roof. The user may for example wear a safety harness that is connected to the safety line on the pitched roof by means of a line and a line clamp.
The invention also relates to a building, comprising:
- a pitched roof which comprises a ridge,
- a safety line which is installed on the pitched roof of the building, in which it is possible to secure a user to the safety line,
- a guide means for the safety line, wherein the guide member has a lower end and an upper end, and wherein the guide mem- ber has a bending stiffness which is larger than the bending stiffness of the safety line,
and wherein the guide means for the safety line is provided on the pitched roof, in such a manner that the lower end thereof is installed on a low-lying level on the pitched roof that can be reached by the hand of a user without the user setting foot on or having to set foot on the pitched roof, and the upper end thereof is installed on an elevated level on the pitched roof which, viewed in a roof pitching direction of the pitched roof, is located above the low-lying level, and cannot be reached by the user by hand without the user having to set foot on the pitched roof.
The pitched roof of the building according to the invention may safely be set foot on, as described above on the basis of the method of installing a safety line on a pitched roof of a building. The features, advantages and technical effects also apply to the building according to the invention.
In an embodiment of the building, the safety line is pushed through the guide member from the lower end to the up- per end in such a manner that a part of the safety line is pushed from the upper end of the guide member, and wherein that part of the safety line is guided over the ridge of the pitched roof and subsequently led downward to a low-lying location that is located below the elevated level, that can be reached by the user by hand without the user having to set foot on the pitched roof, and wherein the portion of the safety that is pushed out of the upper end of the guide member and has been moved toward the low-lying position without the user setting or having to set foot on the pitched roof is attached to the building at the low-lying place.
It is also possible that the pitched roof is provided with an object that protrudes upwardly from the pitched roof, such as a chimney, and wherein the safety line has been pushed through the guide member from the lower end to the upper end of the guide member is pushed, that a portion of the safety line has been pushed from the upper end of the guide member, and wherein said portion of the safety line has been guided around the object and subsequently downward to a low-lying position located below the elevated level, that can be reached by the user by hand without the user setting or having to set foot on the pitched roof, and wherein the part of the safety line that has been pushed out of the upper end of the guide member has been guided around the object and moved toward the low-lying position without the user setting or having to set foot on the pitched roof by the user at the low-lying position on the building.
The invention further relates to a fall protection system for use in a pitched roof of a building, comprising:
- a safety line which can be positioned on the pitched roof of the building, wherein the safety line has been fitted for the securing of a user,
- a guide means for the safety line, wherein the guide means has a lower end and an upper end, and wherein the guide member has a bending stiffness which is larger than the bending stiffness of the safety line, and wherein the safety line, and the guide means are designed in such a manner that the safety line is movable through the guide means by applying a pushing force at the lower end of the guide means away from the lower end to the upper end of the guide member.
With the aid of the fall protection system according to the invention a user is enabled to set foot on the pitched roof of a building safely, as described above on the basis of the method for installing a safety line on a pitched roof of a building. The features, advantages and technical effects also apply to the fall protection system according to the invention .
In an embodiment of the fall protection system according to the invention, the guide means is movable between a re- tracted position and an extended position, for instance telescopically movable. While that guide member is capable of bridging the distance from the roof gutter to the ridge, viewed in the roof pitching direction, the guide member occupies relatively little space in the retracted position.
In a possible embodiment, the guide member is provided with a pushing mechanism that is driven by hand or preferably by an (electro-)motor for the safety line, for instance with a mechanism provided with one of more driving wheels engaging the safety line. For instance, an electromotor is provided, possibly with a corresponding (rechargeable) battery. It is for instance provided that the pushing mechanism is coupled to an electrical screwing and/or drilling machine with possibly a rechargeable battery as a driving motor. A manual drive could for instance be provided with a handle. The mechanism is preferably mounted near the lower end of the guide member, with as a result that both the operation thereof and the engagement on the safety line occur close to the lower end.
In an embodiment according to the invention the fall protection system comprises a ladder, wherein the guide mem- ber can be releasably connected to the ladder, for instance by means of a hinge. It is also possible to provide the fall protection system according to the invention with a bag that can be carried by the user, wherein the safety line is fold- able or rollable in such a manner that it is possible to accommodate it in the bag. When the guide member is made extendable, the guide member may be stowed away in the
retracted position preferably together with the folded in or rolled up safety line in the bag.
The invention will now be clarified on the basis of an embodiment shown in the Figures.
Figure 1 shows a building with a pitched roof that is to be repaired, and a user with a fall protection system according to the invention.
Figure 2 shows the building shown in Figure 1, wherein the user installs a safety line of the fall protection system according to the invention on the pitched roof.
Figure 3 shows the building shown in Figure 1, wherein the safety line is installed on the pitched roof and the user is secured to the safety line.
The building 1 shown in Figure 1 constitutes a private house. The building 1 comprises a pitched roof 2, which is constructed in this embodiment as a saddle roof. The pitched roof 2 comprises two slanted roof planes or roof shields 3, 4 on the front side respectively the rear side of the building 1. The two inclined roof planes 3, 4 meet at a ridge 10, while the pitched roof 2 is bounded by gutters 8 at the bottom side. On the pitched roof 2 a chimney 9 is provided. The pitched roof 2 is mounted on facades 5 at the front respectively rear side of the building 1.
The pitched roof 2 is damaged - in the pitched roof 2 is a gap 11, in this embodiment. For repairing the damaged pitched roof 2, a user or roof worker 12 must set foot on the pitched roof 2. However, the pitched roof 2 lacks any form of integrated roof safety. Therefore, the user 12 carries a fall protection system according to the invention with him. The fall protection system according to the invention comprises in this embodiment a ladder 14, and a carrying case 34 in which a safety line 20 and a guide member 16 for the safety line 20 are stored.
The safety line 20 may for example be a plastic rope or cable. In this embodiment, the safety line 20 comprises a coupling piece 21 to the front end or head end thereof. The safety line 20 has a bending stiffness such that the safety line 20 is foldable or rollable, for example with a radius of curvature which is smaller than 30 cm, such that the folded- up or rolled-up safety line 20 fits in the carrying bag 34.
The guide member 16 includes, for example multiple tubular rods, which are mutually telescopically connected. The guide member 16 has a bending stiffness that is larger than the bending stiffness of the safety line 20. The safety line 20 fits neatly into the guide member 16. For example, the outer diameter of the safety line 20 is adapted to the inner diameter of the guide member. The thickness of the annular gap between the outer diameter of the safety line 20 and the inner diameter of the guide member 16 is for example smaller than the outer diameter of the safety line 20, preferably less than 5 mm. The guide member 16 includes, for example tube-shaped rods made of metal or plastic, such as carbon. The guide member 16 is movable between a retracted position and an extended position. In the carrying bag 34 the guide member 15 is in the retracted position.
As shown in Figure 2, the user places 12 the ladder 14 against the roof gutter 8 of the pitched roof 2. The guide member 16 includes a lower end 23 and an upper end 24. While the guide member 16 is in the retracted position, the guide member 16 in this example, first at the lower end 23 thereof is connected to the ladder, here pivotally and detachably, here with a step or post of the ladder 14. As a result of the hinged connection, the guide member 16 may follow the roof inclination of the pitched roof 2 and be placed flat on the pitched roof 2.
Subsequently, the guide member 14 is extended manually or by means of a driving device (not shown) from the re- tracted position to the extended position.
The guide member 16 comprises an upper curved portion 17 which is provided with the upper end 24. As a result of the curved top portion 17, the upper end 24 of the guide member 14 lies above the ridge 10 when in the extended position. The upper end 24 may in the extended position, also lie at a distance from the ridge 10, for example, a distance which is smaller than about 1 meter or 50 centimeter (not shown) .
In a possible embodiment, the user inserts the safety line 12 with the coupling piece 21 to the head end of the safety line 20 via the lower end 23 of the guide member 16 in the guide member 16. This requires that the coupling piece 21 has an embodiment adapted to the diameter of the member 16.
The dimensions and the bending stiffness of the safety line 20 and the guide member 16 are such that the safety line 20 can be pushed through the guide member 16. The user, possibly a pushing mechanism, pushes the safety line 20 through the guide member 16 away from the lower end 23 to the upper end 24.
The user continues to push so that the coupling piece 21 of the safety line 20 emerges from the upper end 24 of the guide member 16, and is guided over the ridge 10 of the pitched roof 2. The part of the safety line 20 having an increasing length and coming out or the upper end 24 of the guide member 16, moves along the slanted roof plane 4 down- ward on the back side. That part of the safety line 20 subsequently moves across the gutter 8 of the slanted roof plane 4 at the back side, and subsequently along the facade 6 on the rear side downward. On the Ϊ3ς3άβ 6 at the rear side an anchoring member 26 is provided (see Figure 3a) . In this embodiment, the anchoring member 26 is located in a wall.
The body 26 is preferably arranged at a vertical dis- tance above the ground which is smaller than 50 cm.
The coupling piece 21 at the head end of the safety line 20 may be connected to the anchoring member 26. The safety line 20 thus is firmly secured to the building 1.
After the attachment of the safety line 20 to the an- choring member 26, the guide member 16 is brought back to the retracted position (see Figure 3) .
The user 12 is wearing a safety harness 31. While the user 12 still stands on the ladder 14, he connects the safety harness via a line 32 and a line clamp 30 to the safety line 20. The user 12 then is safely secured to the safety line 20. Then the user 12 may set foot on the pitched roof 2 safely.
In a possible embodiment, the guide member is provided with a manually or, preferably, (electro-) motor driven pushing mechanism for the safety line, for example with a mechanism with one or more driving wheels engaging the safety line. For example, there is provided an electric motor, possibly with a corresponding (rechargeable) battery. For example, it may be provided that the pushing mechanism is coupled with an electric screwing and / or drilling machine, possibly with a rechargeable battery as the drive motor. A manual drive could for example be equipped with a hand crank. Preferably, the mechanism is arranged near the lower end of the guide member.
The invention is not limited to the exemplary embodiment shown in the figures. The person skilled in the art is capable of making various modifications that are within the scope of the invention. For example, the fall protection system according to the invention can be applied to the safety line 20 to the chimney 9 of the pitched roof 2 to lead. The coupling piece 21 to the head end of the safety line 20 is in this case mounted in an anchoring member at the facade 5 at the front side (not shown) . In addition, the fall protection system according to the invention is also applicable in other roof configurations than the gable roof shown in the Figures.

Claims

1. A method for installing a safety line on a pitched roof of a building, wherein the pitched roof comprises a ridge, and wherein a user can be secured to the safety line, and wherein use is made of:
- a guide member for the safety line, wherein the guide member comprises a lower end and an upper end, and wherein the guide member has a bending stiffness larger than the bending stiffness of the safety line,
and which method comprises:
- installing the guide member for the safety line on the pitched roof, in such a manner that the lower end thereof is installed on a lower level on the pitched roof which can be reached by the user by hand without the user setting foot on or having to set foot on the pitched roof, and the upper end thereof is installed on a higher level on the pitched roof that, viewed in a roof pitching direction of the pitched roof, lies higher than the lower level and cannot be reached by the user by hand without the user setting foot on the roof,
- pushing the safety line through the guide member from the lower end toward the upper end of the guide member, and wherein this pushing is continued to push on increasingly long part of the safety line out of the upper end of the guide member, and wherein said part of the safety line is guided over the ridge of the pitched roof and subsequently moves downward toward a lower position that lies lower than the higher level and can be reached by the user by hand with- out the user having to set foot on the pitched roof,
- the fastening by the user at the lower position, preferably at the building, of the part of the safety line that has been pushed out of the upper end of the guide member and that has been moved toward the lower position without the user therefore setting foot or having to set foot on the pitched roof.
2. The method according to claim 1, wherein the pitched roof comprises a saddle roof with two pitched roof planes which are mutually connected by the ridge, and wherein the guide member for the safety line is installed on one of the pitched roof planes of the pitched roof, and wherein the part of the safety line that is pushed out of the upper end of the guide member is guided over the ridge toward the other pitched roof plane of the pitched roof and subsequently, viewed in the roof pitching direction of the other pitched roof plane of the pitched roof, moves downwards and toward the low position, over that other pitched roof plane.
3. The method according to claim 1 or 2, wherein the ridge protrudes above the plane of the pitched roof, and wherein the guide member is provided with a curved top portion that comprises the upper end, and wherein the curved portion ex- tends upwardly from the plane of the pitched roof on which the guide member is arranged, and wherein the curvature of the curved portion is such, that the safety line is guided over the ridge of the pitched roof.
4. The method according to any one of the preceding claims, wherein the plane of the pitched roof on which the guide member is arranged is located at a front side of the ridge, and wherein the building comprises a facade which is located at a rear side of the ridge opposite to the front side, and wherein the lower position where the part of the safety line is attached to the building by the user, is located at that facade.
5. A method for installing a safety line on a pitched roof of a building, wherein the pitched roof comprises a ridge, and wherein the pitched roof is provided with an object that protrudes upwardly from the pitched roof, for example a chimney, and wherein a user can be secured to the safety line, and wherein use is made of:
- a guide member for the safety line, wherein the guide member has a lower end and an upper end, and wherein the guide member has a bending stiffness larger than the bending stiffness of the safety line,
and which method comprises:
- installing the guide member for the safety line on the pitched roof, in such a manner that the lower end thereof is installed on a lower level on the pitched roof which can be reached by the user by hand without the user setting foot or having to set foot on the pitched roof, and the upper end thereof is installed on a higher level on the pitched roof that, viewed in a roof pitching direction of the pitched roof, lies higher than the lower level, and cannot be reached by the user by hand without the user having to set foot on the pitched roof,
- pushing the safety line through the guide member from the lower end toward the upper end of the guide member, and wherein this pushing is continued to push an increasingly long part of the safety line out of the upper end of the guide member, and wherein said part of the safetyline is guided around the object of the pitched roof and subsequently moves downward towards a lower position that lies lower than the higher level and can be reached by the user by hand without the user having to set foot on the pitched roof, - fastening by the user at the lower position, preferably at the building, of the part of the safety line that has been pushed out of the upper end of the guide member, has been guided around the object and has been moved toward the lower position without the user therefore setting foot or having to set foot on the pitched roof.
6. The method according to claim 5, wherein the plane of the pitched roof on which the guide member is arranged is located at a front side of the ridge, and wherein the building comprises a facade, which is located at the front side of the ridge, and wherein the lower position where the part of the safety line is attached to the building by the user, is located at that facade.
7. The method according to claim 4 or 6, wherein said lower position is located at a vertical distance from the lowermost part of the facade which is less than 2 meters, preferably less than 1 meter.
8. The method according to any one of the preceding claims, wherein the frontal end of the safety line is provided with a coupling piece which can be coupled with an anchoring member, that is attached to said facade at the lower position, and wherein the coupling piece is connected to anchoring member secured to that facade.
9. The method according to any one of claims 1-3, 5 or 8, wherein the lower position where the part of the safety line that has been pushed out of the upper end of the guide member is attached to the building by the user, is situated at a roof gutter of the pitched roof.
10. The method according to any one of the preceding claims, wherein the guide member is movable between a retracted position and an extended position, and wherein during the installation of the guide member on the pitched roof firstly the guide member is placed on the pitched roof in the retracted position, and subsequently the guide member is moved from the retracted position to the extended position.
11. The method according to any one of the preceding claims, wherein the guide member is mounted on a ladder to be placed against the building.
12. The method according to claim 11, wherein the guide member is pivotally connected to the ladder.
13. The method according to any one of the preceding claims, wherein during pushing of the safety line through the guide means the length is measured of the safety line part that has been pushed through the guide member.
14. The method according to any one of the preceding claims, wherein the safety line, in a slack state, has a radius of curvature which is smaller than 1 m, preferably smaller than 50 centimeters.
15. The method according to any one of the preceding claims, wherein, after attaching to the lower place on the building by the user, the part of the safety line that has been pushed out of the upper end of the guide member, the user secures himself to the safety line on the pitched roof.
16. A building, comprising:
- a pitched roof which comprises a ridge,
- a safety line which is installed on the pitched roof of the building, wherein a user can be secured to the safety line,
- a guide member for the safety line, wherein the guide member comprises a lower end and an upper end, and wherein the guide member has a bending stiffness larger than the bending stiffness of the safety line,
and wherein the guide member for the safety line is
installed on the pitched roof in such a manner that the lower end thereof is installed on a lower level on the pitched roof which can be reached by the user by hand without the user setting foot on or having to set foot on the pitched roof, and the upper end thereof is installed on a higher level on the pitched roof that, viewed in a roof pitching direction of the pitched roof, lies less higher than the lower level, and cannot be reached by the user by hand without the user to setting foot on the pitched roof.
17. The building according to claim 16, wherein the safety line is pushed through the guide member from the lower end toward the upper end in such a manner that a part of the safety line is pushed out of the upper end of the guide member, and wherein that part of the safety line is guided over the ridge of the pitched roof and subsequently is guided downward to a lower location that lies lower than the higher level, that can be reached by the user by hand without the user having to set foot on the pitched roof, and wherein the part of the safety that is pushed out of the upper end of the guide member and has been moved toward the lower position without the user setting or having to set foot on the pitched roof, is attached to the building by the user at the lower position.
18. The building according to claim 16, wherein the pitched roof is provided with an object that protrudes upwardly from the pitched roof, for example a chimney, and wherein the safety line has been pushed such through the guide member from the lower end to the upper end of the guide member, that a part of the safety line has been pushed out of the upper end of the guide member, and wherein said part of the safety line has been guided around the object and subsequently is guided downward to a lower position that lies lower than the elevated level, that can be reached by the user by hand without the user having to set foot on the pitched roof, and wherein the part of the safety line that has been pushed out of the upper end of the guide member has been guided around the object and is moved toward the lower position without the user setting foot or having to set foot on the pitched roof and is attached to this building at the lower position (by the user) .
19. A fall protection system for use at a pitched roof of a building, for example by a method according to one or more of the preceding claims, the system comprising:
- a safety line which can be positioned on the pitched roof of the building, wherein the safety is adapted for securing a user,
- a guide member for the safety line, wherein the guide member comprises a lower end and an upper end, and wherein the guide member has a bending stiffness which is larger than the bending stiffness of the safety line,
and wherein the safety line and the guide member are designed in such a manner that the safety line is movable through the guide member, from the lower end to the upper end of the guide member, by applying a pushing force at the lower end of the guide member away.
20. The fall protection system according to claim 19, wherein the guide member is movable between a retracted position and an extended position.
21. The fall protection system according to claim 19 or 20, wherein the frontal end of the safety line is provided with a coupling pieces which can be coupled with an anchoring member attached to the building, for example an anchoring body pro- vided at a low position at a facade .
22. The fall protection system as claimed in claim 21, wherein the coupling piece is movable from the lower end toward the upper end through the guide member.
23. The fall protection system according to claim 21 or 22, wherein the anchoring member attached to the building has a plug-in bore that is open at an outwardly facing plug-in side, wherein the coupling piece comprises a pen fitting therein, preferably in such a manner that the pen, when in use, is approximately perpendicular to the tensile force of the safety line.
24. The fall protection system according to one or more of the claims 21 - 23, wherein the guide member is provided with a manually or, preferably, (electro-) motor driven pushing mechanism for the safety line, preferably arranged near the lower end of the guide member, and, for example carried out with one or more drive rollers engaging the safety line.
25. The fall protection system as according to in any one of claims 19-24, said system further comprising a ladder or a ladder extension piece which is attachable to a ladder, wherein the guide member and / or the ladder / ladder extension-piece is / are provided with user operable coupling means which are adapted to releasably connect the guide member with the ladder.
26. The fall protection system as according one of the claims 19-25, comprising a user portable bag, and wherein the safety line is foldable or windable in such a way that it is receivable it in the bag.
EP13703904.6A 2012-01-23 2013-01-23 Installing a safety line on a pitched roof Withdrawn EP2806950A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1039313A NL1039313C2 (en) 2012-01-23 2012-01-23 INSERTING A SAFETY LINE ON A Slanted ROOF.
PCT/NL2013/050032 WO2013125945A1 (en) 2012-01-23 2013-01-23 Installing a safety line on a pitched roof

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EP2806950A1 true EP2806950A1 (en) 2014-12-03

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EP13703904.6A Withdrawn EP2806950A1 (en) 2012-01-23 2013-01-23 Installing a safety line on a pitched roof

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WO (1) WO2013125945A1 (en)

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NL1039313C2 (en) 2013-07-25

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