US20240060320A1 - Safety rail system - Google Patents

Safety rail system Download PDF

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Publication number
US20240060320A1
US20240060320A1 US18/375,649 US202318375649A US2024060320A1 US 20240060320 A1 US20240060320 A1 US 20240060320A1 US 202318375649 A US202318375649 A US 202318375649A US 2024060320 A1 US2024060320 A1 US 2024060320A1
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US
United States
Prior art keywords
post
rail
component
safety
height
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.)
Pending
Application number
US18/375,649
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English (en)
Inventor
Anton Buenemann
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.)
Aldeck Group Pty Ltd
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Aldeck Group Pty Ltd
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
Priority claimed from AU2016903731A external-priority patent/AU2016903731A0/en
Application filed by Aldeck Group Pty Ltd filed Critical Aldeck Group Pty Ltd
Priority to US18/375,649 priority Critical patent/US20240060320A1/en
Publication of US20240060320A1 publication Critical patent/US20240060320A1/en
Pending legal-status Critical Current

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    • 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
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • E04G21/3223—Means supported by building floors or flat roofs, e.g. safety railings
    • 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
    • E04G21/3295—Guide tracks for 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
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • E04G21/3223—Means supported by building floors or flat roofs, e.g. safety railings
    • E04G21/3233—Means supported by building floors or flat roofs, e.g. safety railings without permanent provision in the floor or roof
    • 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
    • E04G21/3266—Safety nets
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/142—Railings extensible or telescopic
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/12—Clamps or clips for crossing members
    • E04G7/14—Clamps or clips for crossing members for clamping the members independently
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
    • E04H17/20—Posts therefor
    • E04H17/21—Posts therefor with hollow cross sections
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/145—Toe boards therefor

Definitions

  • guard rails also known as safety rails.
  • Present day safety rails comprise a series of horizontal rails attached to posts that attach firmly to the building in regular intervals under construction. Posts come in a number of standard sizes, including 1.1 m, 1.5 m and 2 m in height.
  • Construction workers often require different barrier heights at different stages of a construction project.
  • a builder may only wish to have safety perimeter railing at a lower height of 1.1 m.
  • this allows the window installers that are required on site to take perimeter windows or facade out of the side of the building.
  • Higher guardrails make this activity substantially more difficult and cumbersome.
  • different trades such as plumbers and plasterers and electricians need to work on short access ladders at approximately 1 m high and, close to the perimeter of the building. For this type of work, the trades people are vulnerable to potentially falling off these access ladders and over the 1.1 m high handrail and consequently over the edge of the building. Therefore a higher handrail system of 1.5 m to 2.4 is required.
  • a company may have a stock of different height guard rails for use on various construction projects and it would be advantageous to be able to carry a single set of guard rails for deployment on any job and which can be adjusted to suit the height requirements of that individual job or that stage of construction.
  • the invention provides a post for a temporary safety rail system comprising a base for reversible engagement with a floor, a rail holder to hold a rail in reversibly fixed engagement with the post and a plurality of components which are together operable to adjust the height of the post.
  • the post may preferably comprise a first component and a second component wherein the components are slidable about one another to adjust the height.
  • the second component is concentrically slidable within the first component and in some embodiments, the components are telescopic to adjust the height.
  • the rail holder comprises one or more of: a clamp, an aperture, a slot, a bracket, a screw, a bolt, a wing nut.
  • the rail holder may also for example comprise an internal aperture defined in the post and it may define an aperture to receive a rail and a clamp to reversibly fix the rail in secure engagement with the post.
  • Some preferred embodiments comprise a plurality of rail holders which are optionally sited in vertical or horizontal series.
  • the apparatus of the invention comprises a stop to restrict downward movement of an upper post component relative to a lower post component.
  • the stop may pass through an aperture defined by the lower post component and optionally under or through the upper post component.
  • the rail holder of the invention may optionally be integrally formed with the post or removable from the post.
  • the invention also provides a method of installing an adjustable height safety rail apparatus comprising
  • the invention also provides a mesh support for a safety rail apparatus comprising a first component and a second component which are together operable to adjust the height of the support, a fixing means to reversibly fix the support at a selected height, a cross piece for supporting a mesh and a cross piece holder to hold a cross piece in reversibly fixed engagement with the mesh support.
  • the support may comprise a first component and a second component wherein the components are slidable about one another to adjust the height which may for example be arranged so that the second component is concentrically slidable within the first component.
  • the support may also comprise a first component and a second component wherein the components are telescopic to adjust the height.
  • the cross piece holder comprises one or more of: a clamp, an aperture, a slot, a bracket, a screw, a bolt, a wing nut and in some, the cross piece holder defines an aperture to receive a rail and a clamp to reversibly fix the rail in secure engagement with the mesh support.
  • the support comprises a stop to restrict downward movement of an upper post component relative to a lower post component.
  • the stop may pass through an aperture defined by the lower post component and optionally under or through the upper post component.
  • the cross piece holder is optionally integrally formed with the post or removable from the post and in some, the cross piece is integrally formed with the post or removable from the post.
  • Some preferred embodiments of a support according to the invention comprise an outrigger element.
  • the invention also provides a safety post for providing a safety anchor point comprising a post according to claim 1 and a fixture to fix the base to a floor, wherein the post provides support for at least 12 kN load.
  • the invention also provides a post or stanchion for a construction safety rail system comprising a plurality of components which are together operable to enable the total height of the post to be adjusted.
  • a rail for a construction safety rail system as herein described.
  • Operability of the components may be by any suitable means.
  • a post for a construction safety rail system comprising a first component and a second component which are together operable to enable the total height of the post to be adjusted.
  • Operability of the first and second components may be by any suitable means.
  • At least one component is slidable within or along another.
  • one component is concentrically slidable within another.
  • Such slidable engagement may for example be telescopic (for example, a telescopic staunchion).
  • a winding mechanism to wind one component relative to the other between heights.
  • Such a winding mechanism must be sufficiently robust so as to meet the strength requirements of relevant safety standards.
  • the winding mechanism uses one or more gears to enable steady movement and preferably is lockable so as to set the height of the safety rail system at a wide variety of heights.
  • the two components are hingedly connected and operability to adjust height is by moving one component relative to the other about the hinge mechanism.
  • the two components are able to be reversibly engaged at different heights in a non-slidable manner.
  • one component may comprise one or more engagement points at which one or more corresponding engagement points along the second component may engage.
  • An example of such an engagement mechanism is a key hole shaped slot through which a pin with a wide head is slotted.
  • Some embodiments may require that the first and second components are capable of fixed engagement (such as by locking) in position for operation.
  • a fixing element of the invention such as this is referred to herein as a ‘locking mechanism’.
  • Such a locking mechanism may be required to ensure that the apparatus has sufficient strength to provide the intended safety benefit.
  • embodiments which use a slidable mechanism may comprise one or more pins or screws which pass at least partially through the body of each component when in position so as to ‘lock’ them in place at the selected position.
  • the invention also provides a rail engaging mechanism for a safety rail system comprising a component to engage with the substantially horizontal rails which form part of the overall system or apparatus.
  • Such rails may engage with the rail engagement mechanism or indeed a post of the invention in any suitable manner and must be strong enough to comply with local safety and legal requirements.
  • the post comprises a mechanism to fix the rail in engagement (preferably reversibly) with the post.
  • Some embodiments of this mechanism comprise a pin or screw member which may optionally press against the rail and therefore fix it in place, or pass at least partially through the rail to so fix it in place.
  • Some embodiments may comprise an indentation in the surface of the rail to receive such a screw or pin member.
  • Some embodiments further comprise a rest on which the rail rests or an aperture through which a rail may at least partially pass in order to provide further stability in fixing it relative to the post.
  • Such an aperture may be of any suitable shape, in some embodiments it is generally rectangular, in others it is generally D shaped, it may also be any other suitable functional shape, such as circular, triangular, etc.
  • the rail engagement system may be such that the rails are fixed in any suitable configuration, for example, in front of and behind one another or above and below each other, or they may abut one another, or for example adjacent rails may engage with each other so as to ‘lock’ together.
  • Such engagement between adjacent rails may be of any suitable type, for example telescopic, pin, screws, bolts, cam device, and so on.
  • the mechanism for fixing the rail in engagement with the post is able to be positioned at a plurality of positions along the post.
  • this mechanism is removable from the post member and can be placed at any required position. It may for example be slidably engageable with the post or a portion of it (for example an upper telescopic section) so as to enable a rail to be set at a plurality of heights.
  • the safety rail post and system of the invention easily transforms from a lower handrail, such as for example 900, 1 m or 1.1 m or 1.2 m high, that may be desirable at one stage of a project to a 1.5 m-2.5 m high (for example 1.5 or 1.6 or 1.7 or 1.8 or 1.9 or 2.0 or 2.1 or 2.2 or 2.3 or 2.4 or 2.5 m) handrail system that may for example be more desirable at a different stage of the project.
  • a lower handrail such as for example 900, 1 m or 1.1 m or 1.2 m high
  • 1.5 m-2.5 m high for example 1.5 or 1.6 or 1.7 or 1.8 or 1.9 or 2.0 or 2.1 or 2.2 or 2.3 or 2.4 or 2.5 m
  • height adjustment can be done without the removal of the existing lower (for example 1.1 m high) safety rail already in place.
  • Most posts according to the invention must be capable of solid, safe fixing to a solid structure in order to provide the stability required. This may be achieved in any suitable way.
  • a post according to the invention may also comprise a support member such as a base plate to provide support and a means of fixing the post at a location, for example to the floor or the ground.
  • the support member may be of any suitable construction suitable to provide the strength required to maintain the post in an upright position and withstand loads as required by relevant safety standards.
  • the base plate may also incorporate a means of allowing a kick plate or board to be attached as may be required by law in some locations.
  • a post according to invention comprises a base which is capable of reversible fixing to a solid structure, such as the floor of a building under construction, or the ground, etc.
  • the base may be fixed in any suitable manner. In some embodiments it is screwed or bolted to the solid structure, in others it may be clamped or a receiver or spigot cast into the floor or welded, for example.
  • a support member or base according to the invention may comprise additional structural support such as a stub post or spigot welded to the structure that can engage with the post, for example a support defining a generally triangular shaped structure between a base plate and the post.
  • a support comprises a triangular stiffening wedge or an additional diagonal brace connecting reversibly to the side of the post and the floor.
  • the post and safety rail system of the invention reduces costs to a builder by reducing the need to purchase or hire posts of multiple heights, by reducing ‘downtime’ whilst rail posts are replaced to increase their height.
  • FIG. 1 is a side view of the first and second components according to one preferred embodiment of the invention.
  • FIG. 2 is a side view of the embodiment of FIG. 1 with the first and second components engaged ready for use.
  • FIG. 3 is a top perspective view of the first component of the post according to FIG. 1 .
  • FIG. 4 is a top view of the first and second components from FIG. 1 .
  • FIGS. 5 and 6 are further side perspective views of the embodiment of FIG. 1 .
  • FIG. 7 is a side perspective view of another example safety rail post and system according to the invention which has been set up to show its in-use configuration.
  • FIG. 8 depicts three safety posts according to the invention set at different heights.
  • FIGS. 9 a and 9 b depict another embodiment of a safety post according to the invention wherein the post defines an aperture serves as rail holder.
  • FIGS. 10 a , 10 b , 11 and 12 depict further example alternative posts according to the invention.
  • FIG. 13 is a side elevation view of an example safety post according to the invention comprising a baseplate with supports.
  • FIG. 14 is a side view of another example safety plate, also with a baseplate and support.
  • FIG. 15 is a side perspective view of another safety post and a detachable rail connector ( 1520 ) according to the invention.
  • FIG. 16 is a side elevation view of an example safety post according to the invention comprising a baseplate with supports.
  • FIG. 17 a depicts the top section of an example safety post according to the invention.
  • FIG. 17 b depicts an example rail engaging mechanism according to the invention.
  • FIGS. 18 a - 18 o depict an example installation method for a safety rail apparatus according to the invention.
  • FIG. 19 depicts a safety post and rail system according to the invention comprising outrigger elements and protective netting.
  • FIG. 20 depicts a side perspective view of the top end of a safety net arrangement including outrigger posts according to the invention.
  • FIG. 21 depicts a side elevation view of an example extendable net support enclosure system according to the invention.
  • FIGS. 22 and 23 are front and rear views of the support of FIG. 21 .
  • FIGS. 24 a and 24 b are side views of the support of FIG. 21 .
  • FIGS. 25 a and 25 b are views of the support of FIG. 21 from above and below respectively.
  • FIG. 26 depicts a safety anchor comprising a safety post according to the invention.
  • FIG. 27 depicts an example tethering system for a safety rail system according to the invention.
  • the various heights required during a construction project are readily accommodated by an apparatus of the invention.
  • the workers may only require the safety rail to be at for example, 900 mm or 1 m or 1.1 m high. This allows the window or facade installers that are required on site to take perimeter windows or facade out of the side of the building. Higher guardrails make this activity substantially more difficult and cumbersome.
  • different trades such as plumbers, plasterers and electricians need to work on short access ladders or scissor lifts at approximately 1 m to 1.2 m high and, close to the perimeter of the building.
  • a handrail system according to the invention can be readily lowered again later in a project when other trades or processes are required.
  • the apparatus of the invention allows such modifications to readily occur without full replacement of the handrail system already in place, or without the need for numerous tools and without creating additional loose components (for example which have been removed) and which can get in the way and cause safety hazards.
  • FIG. 1 is a side view of an example first component ( 100 ) and second component ( 110 ) according to one preferred embodiment of the invention in which, in use, the second component is slidably engaged with the first component.
  • both components comprise posts or post members.
  • the first component comprises apertures 310 to receive a rail and fixing means 320 (in this embodiment a bolt or screw) to reversibly fix a rail extending to an adjacent post therein.
  • fixing means 320 in this embodiment a bolt or screw
  • second aperture 315 which is intended to receive a second rail which is intended to extend to a different post, on the other side of this post.
  • rails can extend through each aperture which makes for a stronger attachment, but also greater control in varying the distances between posts for different applications.
  • the rails will overlap one another as depicted in FIG. 19 .
  • the aperture member defines two adjacent apertures which together are directed along the axis of the post.
  • the rails overlap one another one above the other, but they may equally overlap horizontally or in other conformations or configurations.
  • the rails do not overlap. For example they may meet within the aperture member which defines the aperture, or they may be joined one to another lengthways, etc.
  • Item 330 which is the means of locking or fixing the first and second components (or posts) together is in this embodiment also a bolt or screw.
  • the safety post comprises base 340 with holes 350 for attachment to a flooring or the ground, and which has diagonal support 360 and horizontal supports 370 for support of a kick board 710 and for additional strength.
  • FIG. 1 also depicts an additional safety device 510 which in this embodiment is in the form of a pin which is attached to the first component by a cord.
  • FIG. 2 depicts the same embodiment as FIG. 1 , with the first and second components or posts slidably engaged and fixed at an extended position using locking mechanism 330 which in this embodiment comprises a pair of bolts which are tightened so as to press against the upper post or second component and thereby hold it in place.
  • locking mechanism 330 which in this embodiment comprises a pair of bolts which are tightened so as to press against the upper post or second component and thereby hold it in place.
  • FIG. 3 is a top perspective view of the first component or lower post of the safety post according to FIG. 1 shown generally at 100 .
  • Post component 100 comprises an aperture 310 to receive a rail and fixing means 320 which in this embodiment comprises a bolt which is tightened down against the rail so as to reversibly ‘lock’ it in place.
  • Post component 100 also comprises base 340 and ‘locking mechanism’ 330 which is used to reversibly fix the first component to the second component at a selected height once the second component is slid within the body of the first component to the selected height.
  • FIG. 4 is a top view of the first ( 100 ) and second ( 110 ) components from FIG. 1 . This view also shows aperture 310 , fixing means 320 and locking mechanism 330 .
  • FIGS. 5 and 6 are further side views of the embodiment of FIG. 1 . Again, these views depict aperture 310 , fixing means 320 and locking mechanism 330 as well as base 340 with holes 350 for fixing to a floor and supports 360 and 370 .
  • FIGS. 5 and 6 also depict an additional safety device 510 which in this embodiment is in the form of a pin which is attached to the first component by a cord. This pin is used to provide a further, secure fixture between the first and second components by passing at least partially through each and thereby fixing them together.
  • pin 510 is particularly useful in providing additional safety in the event of a person or heavy weight falling on to the top rail from above.
  • safety device 510 is in the form of a bolt which passes through the first component 100 and below the second component 110 thus preventing it from collapsing into the first component.
  • FIG. 7 is a side perspective view of another example safety rail post and system according to the invention which has been set up to show its in-use configuration with rails 720 engaged with through apertures 310 in aperture members and fixed with bolts 320 . It depicts apertures 310 to receive a rail and fixing means 320 (in this embodiment a bolt or screw) to reversibly fix a rail therein and base 340 . Also depicted in FIG. 7 is board 710 which functions as a kick board to stop items such as tools or fixtures or other debris from rolling along and off the edge of the floor.
  • a rail and fixing means 320 in this embodiment a bolt or screw
  • Board 710 can be fixed to posts according to the invention in any suitable manner, for example via screws into the baseplate, or a base plate support such as item 371 in FIG. 8 .
  • FIG. 8 depicts three safety posts according to the invention set at different heights. This figure highlights the invention's flexibility in allowing handrails to be set at numerous heights.
  • Support 371 is designed to add strength to the base and in some embodiments is used to fix a board such as a kickboard in place, for example via a bolt(s) or screw(s) engaged with one or more of holes 375 .
  • FIGS. 9 a and 9 b depict another embodiment of a safety post according to the invention shown generally at 900 .
  • post 900 defines an aperture 910 which serves as rail holder for rail 930 which is reversibly fixed in place by bolts 920 .
  • first and second components are slidable (such as a telescopic embodiment)
  • second component eg. upper post
  • Such an embodiment may for example comprise a first component (eg lower post) which defines an aperture for receiving a rail and a second component which comprises two sub posts which themselves are slidable within the two sections either side of the aperture body of the first component.
  • Items 935 and 936 in FIG. 9 a depict the corresponding two sections, but in this instance, in the second component, or upper post.
  • FIGS. 10 a , 10 b , 11 and 12 depict further example alternative posts according to the invention.
  • Item 310 a in FIG. 10 a is an aperture akin to that of aperture 310 on the first component (or lower post) but placed on the second component (or upper post) and in this embodiment functions in the same way.
  • FIG. 13 is a side elevation view of an example safety post according to the invention comprising a baseplate with holes 350 and with supports 360 and 371 .
  • Stop 1310 (in this embodiment, in the form of a bolt), serves two purposes. Firstly, if a worker is working at height and falls on top of the handrail system this will prevent the top post collapsing into the bottom post and potentially allowing the worker to fall over the edge. Secondly, it serves as a stop to prevent fingers being crushed when an installer is adjusting the handrail system height they will need to loosen item 330 FIG. 11 . If they are not holding onto the top post item 110 it will drop into item 100 this would mean that apertures from the top post and bottom post would hit together similar to the middle post in FIG. 8 . If the installer had their hand in between these two posts at that time it could easily be crushed.
  • FIGS. 12 , 14 and 15 depict a further example safety post according to the invention with a further variation in the rail engaging mechanism.
  • These embodiments depict an alternative extension post with only the upper rail engaging aperture members or D rings 1410 welded to the post and the lower set of D rings 1420 being configured to be detachable.
  • Embodiments comprising such detachable aperture members provide a greater flexibility in the range of lengths that the overall, combined safety post can be set at. It will be appreciated that by detaching the lower aperture members, the upper post (or second component) can be slid to a lower position than if they were permanently fixed on.
  • detachability of the lower aperture members of the second component (or upper post) is effected by having aperture members 1420 fixed (in this embodiment, welded) to plate 1510 which is fixed in place against the second component (or upper post) with fixtures 1530 (here bolts) passing through plate 1520 into engagement with plate 1510 .
  • Other means of providing detachable aperture members might for example include using a keyhole slot and pin arrangement so that a set of aperture members with a base plate and pins can be fixed at one or more predetermined heights on the second component merely by sliding the pins of the aperture member plate into a corresponding set of slots on the second component to match the preferred height for the requirements.
  • FIG. 16 is another side elevation view of an example safety post according to the invention comprising a baseplate with supports.
  • FIG. 17 a depicts the top section of an example safety post according to the invention and shows aperture 1710 for receiving a rail to be fixed and aperture 1720 for receiving a bolt to be tightened against the rail and thereby reversibly fix it in place.
  • Hole 1730 allows stop 1310 (in this embodiment a bolt) FIG. 16 to pass through and thereby fix the first and second components of the safety rail in place.
  • some embodiments comprise a plurality of such holes.
  • such holes pre determine the height of the top post for example, for ease of installation. As an example, if a bolt is installed in the lower of the two holes in all posts they will all be set up at 2 m high. If the bolt is placed in the top hole all posts will be set up at 2.4 m high. This saves time as it means the installer doesn't have to measure each post as they will all be set up at the same height.
  • FIG. 17 b depicts another example rail engaging mechanism according to the invention shown generally as 1750 .
  • the rail engaging mechanism comprises a plurality of apertures 1760 , each to receive a rail which is to be reversibly fixed in place with fixing means (here bolts) 1770 .
  • the aperture member defines two adjacent apertures which together are directed at right angles to the axis of the post.
  • the rails extending to each adjacent post overlap in the horizontal plane, one behind the other. This is in contrast to the embodiment of FIG. 1 in which they are placed one above the other.
  • the arrangement of FIG. 17 b maximises the gap between the rails allowing workers to work through the handrail system without closer rails hindering their progress.
  • FIGS. 18 a - 18 o depict an example installation method for a safety rail apparatus according to the invention.
  • Guidelines for installation of an apparatus according to the invention include:
  • FIG. 18 a depicts an example base post of 1100 mm length. It is used as perimeter edge protection on concrete slabs or timber form work.
  • FIG. 18 b depicts an example extension post which is used to extend the base post from 110 anywhere up to 2400 mm.
  • FIG. 18 c depicts an example kickboard which in this example is 150 mm high.
  • FIG. 18 d depicts an example detachable rail bracket which is used as an additional rail holder when the extension post is extended above 2000 mm.
  • FIG. 18 e depicts an example handrail which can be a variety of sizes. In this example it is 3200 mm length. Cross-sectionally it may for example be 50 mm ⁇ 25 mm ⁇ 2 mm or for example 38 mm ⁇ 25 mm ⁇ 2 mm.
  • FIG. 18 a depicts an example base post of 1100 mm length. It is used as perimeter edge protection on concrete slabs or timber form work.
  • FIG. 18 b depicts an example extension post which is used to extend the base post from 110 anywhere up
  • FIG. 18 f depicts an M8 screw bolt for fixing the base into concrete.
  • FIG. 18 g depicts a 14 gauge timber screw for fixing the base plate into timber. Preferably at least 3 are used per post and preferably they are 14 mm ⁇ 90 mm type 17 screws and extend into the support beams below the floor.
  • FIG. 18 h depicts an example safety rail apparatus according after installation.
  • FIG. 18 1 attach the kickboard with a minimum of 4 screws per post. If the kick boards overlap at a point other than on the base posts there should be a minimum of 100 mm overlap with a minimum of 2 screws installed in the overlap to hold the kickboards together.
  • FIG. 18 m for higher rails, place the extension post into the base post and lock into place using the locking bolts provided in the base post.
  • a through bolt is provided in each base post to prevent the extension post from collapsing into the base post. This bolt must be moved to the higher location if the handrail is extended from 2 m to 2.4 m high.
  • FIG. 18 o depicts a corner section of a safety rail apparatus according to the invention. Rails must not exceed 600 mm overhang from the post and rails must meet on corners.
  • the post, rail and rail engaging means of the invention may be manufactured from any suitable materials.
  • suitable materials for example steel, milled steel, aluminium, polymer, carbon-fibre, etc.
  • Some embodiments of the invention provide a handrail system comprising posts and rails, the rails fixed to the posts by brackets welded to the posts and the posts fixed to the supporting floor (preferably a concrete floor) by screw anchors.
  • the rail and post of the invention deflects less than 101 mm under application of 600 Newton horizontal and vertical loads.
  • Example 2 Example Specifications for a Safety Post and Rail System According to the Invention
  • FIG. 19 depicts a safety post and rail system according to the invention comprising outrigger elements and protective netting.
  • FIG. 20 depicts a side perspective view of the top end of a safety net arrangement including outrigger elements according to the invention.
  • An outrigger element 1910 according to the invention is typically attached to a post 1930 which may be a safety post according to the invention, or it may be attached to a separate post which may for example be separately fixed to a post or a horizontal rail according to the invention.
  • the outrigger elements of the invention may extend out from the building site any suitable distance. Typically such distances comprise 0.5 m to 1.5 m, preferably 0.9 m to 1.3 m, and post preferably 1 to 1.2 m. Such outrigger elements are useful to provide an additional support for further safety features such as the netting 1920 also shown in these figures.
  • the outrigger elements may be made from any suitable materials, but typically they are made from the same materials as the rail and posts of the rail apparatus.
  • the outrigger elements may slidingly engage with the top of the posts and optionally be fixable in one or more positions, for example with a hole and button, or clip or slot and bolt, or other suitable mechanism.
  • the safety post of the invention itself comprises an outrigger element which may or may not be extendable therefrom.
  • an outrigger element may attach separately to a rail rather than a post.
  • the outrigger element may for example attach by means of a clamp, or bolt or clasp or any other suitable mechanism sufficient to hold the element in place and withstand forces that might be applied to it, for example if a tool or other item, such as a bolt or a screw is dropped from an upper level and is caught by the netting.
  • This feature adds an additional layer of safety on multi story construction sites regarding falling objects. Spacing of the outrigger elements can be discretionary, depending upon wind loadings or weight of proposed items that are intended to be prevented from falling.
  • the outrigger elements can also be installed as required, for example only on determined sections of one elevation of a building, or alternatively could be installed continuously and on multiple levels.
  • outrigger elements add additional layer of safety to a building site by providing an additional catch net for any minor items dropped by tradesman or blown over the side of buildings on windy days.
  • the mesh may be of any suitable type capable of withstanding the forces applied when items are dropped on construction sites.
  • the mesh or netting is not too heavy which would adversely affect the primary function of the handrail system, that is to prevent people from falling from heights and comply with relevant safety standards.
  • the mesh may comprise: Debris mesh 18 ⁇ 18 ⁇ 15 ply, or Unigrid 25 ⁇ 25 mesh.
  • Debris mesh must be tied to all handrails at 0.8 m centres along the rail, for example using electrical cable ties with a breaking load exceeding 18 kg each.
  • the top of the debris mesh must be no more than 2.1 m for posts at the standard 3 m centres. If the applications requires debris mesh 2.4 m, reduce the post spacing to 2.3 m centres.
  • the tie spacing should be reduced by 25% and limit the top of Debris Mesh to 1.8 m
  • All posts should be fixed to concrete floors for example with 4 ⁇ M8 anchor screws, two at the front, two at the back.
  • Example 4 use of mesh for city buildings to 200 m, and suburban buildings to 100 m tall.
  • the mesh (such as 18 ⁇ 18 ⁇ 15 ply debris mesh) must be tied to the handrail at no more than 1 m centres vertically and at 1.5 m centres along the rail. (No ties to the posts are needed.)
  • the posts may be at the standard spacing of 3 m.
  • post spacing should be reduced to 2 m.
  • Posts should be fixed to the concrete with 4 ⁇ 8 M Anchor Screws.
  • FIG. 21 depicts a side elevation view of an example extendable safety mesh support according to the invention shown generally at 210 attached to a safety rail post system according to the invention.
  • This embodiment of the support is fixed to rails 211 by clamps 212 which in this instance are simple L shaped screw-in clamps.
  • Support posts 213 extend vertically from the floor (and may for example be fixed to the floor) and engage the horizontal mesh rail 214 at their top.
  • the extendable supports of this embodiment do not comprise outrigger elements but it will be appreciated that they are readily attachable to the vertical posts 213 or such posts may come with outrigger elements pre-attached.
  • Such embodiments may comprise a further mesh rail 214 at the ends of the outrigger posts to further support or fix the mesh at its most extreme point.
  • FIGS. 22 and 23 are front and rear views of the support of FIG. 21 .
  • FIGS. 24 a and 24 b are side views of the support of FIG. 21 .
  • FIGS. 25 a and 25 b are views of the support of FIG. 21 from above and below respectively.
  • At least one component is slidable within or along another.
  • one component is concentrically slidable within another.
  • Such slidable engagement may for example be telescopic (for example, a telescopic staunchion).
  • a winding mechanism to wind one component relative to the other between heights.
  • Such a winding mechanism must be sufficiently robust so as to meet the strength requirements of relevant safety standards.
  • the winding mechanism uses one or more gears to enable steady movement and preferably is lockable so as to set the height of the safety rail system at a wide variety of heights.
  • the debris mesh can be readily extended from the ground all the way up to the underside of the floor slab above.
  • mesh supports optionally attached to safety rails which are fixed to safety rail posts according to the invention are fixed at 3 metre intervals with an optional horizontal rail at the top that connects them together.
  • the mesh can be attached to the top rail 214 for example with cable ties and then the installer can simply raise the post inner post item ( 213 ) until it hits the underside of the concrete slab or structure above.
  • a rope or cable could be used in lieu to support the mesh.
  • Such an embodiment provides the building with a complete debris mesh screen preventing anything from going over the side of the building.
  • the mesh support apparatus of the invention provides a complete curtain wall that can be operated from the inside of the building.
  • it can be fixed to a safety rail apparatus according to the invention, so that the mesh support apparatus can be produced with lighter materials which are for example cheaper and easier to handle and install, whilst receiving structural integrity from the safety rail post system of the invention.
  • Another advantage of the mesh support apparatus of the invention is that it can be installed whilst the installer is behind the safety rail system at all times (particularly important, for example on a 20 storey building), and the installer maintains their feet on the floor slab at all times. Therefore risk from elevated work (for example on ladders, scissor lifts etc) and particularly outside the safety rail, are eliminated.
  • FIG. 26 depicts a safety anchor (such as a fall arrest anchor) comprising a safety post according to the invention shown generally at 260 .
  • the safety anchor comprises sling 261 attached via device 262 (here a carabiner) which connects safety strap, which may for example comprise or connect to a harness.
  • the anchor is designed to withstand a load of more than 12 kN (ultimate), preferably more than 13 and most preferably more than 15 kN. Some particular embodiments can withstand a 15.1 kN (ultimate) load in the direction of loading and some preferred embodiments can support a 1523 kg load.
  • Anchorage to the floor is an important aspect of the safety anchor implementations of the invention.
  • the floor must be at least equivalent to concrete which is 120 mm thick, preferably thicker.
  • the bolts or screws used to fix the base of the safety post to the floor must be sufficiently strong so as to withstand the intended forces, for example at least as strong as 4 ⁇ M8 AnkaScrews fixed into the concrete.
  • the screws or bolts should be proof-torqued during installation for example to at least 40 Nm if not specified.
  • the sling or safety device (such as a harness) is attached as close as possible to the base plate so as to maximise support. In some embodiments it is attached directly above the kick plate.
  • a support member 264 may comprise an attachment means, such as an appropriately rated aperture there through.
  • FIG. 27 depicts an example tethering system for a safety rail system according to the invention indicated generally by 270 .
  • the handrail is installed it is behind steel screens, for the prevention of falling objections.
  • the handrail system must be moved or altered after the screens have been removed and the external fagade of the building is not yet in place. In times such as these, falling objects are a major concern.
  • the following tethering system may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)
  • Emergency Lowering Means (AREA)
  • Bridges Or Land Bridges (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US18/375,649 2016-09-16 2023-10-02 Safety rail system Pending US20240060320A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18/375,649 US20240060320A1 (en) 2016-09-16 2023-10-02 Safety rail system

Applications Claiming Priority (10)

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AU2016903731 2016-09-16
AU2016903731A AU2016903731A0 (en) 2016-09-16 Safety rail post
AU2017902334A AU2017902334A0 (en) 2017-06-19 Improved safety rail system
AU2017902334 2017-06-19
AU2017903215 2017-08-11
AU2017903215A AU2017903215A0 (en) 2017-08-11 Further improved safety rail system
AU2017903629 2017-09-07
AU2017903629A AU2017903629A0 (en) 2017-09-07 Still further improved safety rail
US201816067935A 2018-07-03 2018-07-03
US18/375,649 US20240060320A1 (en) 2016-09-16 2023-10-02 Safety rail system

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US201816067935A Continuation 2016-09-16 2018-07-03

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US20240060320A1 true US20240060320A1 (en) 2024-02-22

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US18/375,649 Pending US20240060320A1 (en) 2016-09-16 2023-10-02 Safety rail system

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EP (1) EP3469168B1 (ja)
JP (2) JP2019534959A (ja)
CN (1) CN108699848A (ja)
AU (6) AU2017326754B2 (ja)
CA (1) CA3035382A1 (ja)
GB (1) GB2568830B (ja)
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