EP0599985B1 - Befestigung einer dachabdichtungsbahn oder dergleichen - Google Patents

Befestigung einer dachabdichtungsbahn oder dergleichen Download PDF

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Publication number
EP0599985B1
EP0599985B1 EP92918476A EP92918476A EP0599985B1 EP 0599985 B1 EP0599985 B1 EP 0599985B1 EP 92918476 A EP92918476 A EP 92918476A EP 92918476 A EP92918476 A EP 92918476A EP 0599985 B1 EP0599985 B1 EP 0599985B1
Authority
EP
European Patent Office
Prior art keywords
supporting element
securing
sealing material
sealing strip
covering element
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.)
Expired - Lifetime
Application number
EP92918476A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0599985A1 (de
Inventor
Hans-Ludwig Griesheimer
Ulrich Müller
Reinhard Schubert
Wolfgang Tebart
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.)
Braas Flachdachsysteme & Co GmbH
Original Assignee
Braas GmbH
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 Braas GmbH filed Critical Braas GmbH
Publication of EP0599985A1 publication Critical patent/EP0599985A1/de
Application granted granted Critical
Publication of EP0599985B1 publication Critical patent/EP0599985B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/144—Mechanical fastening means
    • E04D5/145—Discrete fastening means, e.g. discs or clips
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/36—Connecting; Fastening
    • E04D3/3601—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer
    • E04D3/3603—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer the fastening means being screws or nails

Definitions

  • the invention relates to a fastening of a roof waterproofing membrane or the like, consisting of a support element and of a fastening means penetrating this and the underlying sealing membrane, the upper end of which is pivotally and non-positively connected to the supporting element and the lower end of which is anchored in the substructure.
  • Sealing membranes in particular sealing membranes made of polyisobutene, polyvinyl chloride, bitumen, polymer bitumen or the like, laid on a flat roof, are to be fixed on the substrate by means of mechanical fastenings in order to prevent lifting.
  • mechanical fastenings In the central area of a building roof, at least three, in the corner area up to more than ten and in the edge area an intermediate number of fastenings per square meter roof area must be provided to prevent this being lifted off by wind.
  • the fastenings are usually arranged in the edge region of the roof waterproofing membrane and covered in a sealing manner by the respectively adjacent roof waterproofing membrane, a seam overlap of 10 cm to 12 cm being provided. Seam overlaps represent a significant cost factor, especially for plastic roof waterproofing membranes.
  • fastenings are to be distributed approximately evenly over the roof area within an area, narrower roof sealing sheets are laid in areas that require a large number of fastenings, i.e. in the corner and edge area, than in the central area of a roof.
  • the fasteners are therefore arranged in rows running parallel to the edges of a roof waterproofing membrane.
  • the spacing of the fastenings can be adjusted within a range of the number of fastenings required per square meter.
  • a distance of more than 50 cm as well as a distance of less than 15 cm should be avoided.
  • the dependency on different web widths also means a relatively complicated design in practice.
  • Load transfer for roof sealing sheeting mechanically fastened in the covered edge area is structurally unfavorable, since the load transfer is asymmetrical and therefore considerable safety surcharges are required.
  • a fastening of a roof sealing membrane is known from US Pat. No. 4,860,513, which contains a disc-shaped support element resting thereon with a centrally arranged passage opening.
  • the wall of the passage opening is hemispherical towards the top in order to receive a hemispherical head on its underside of a screw serving as a fastening means, which penetrates the sealing membrane.
  • the head of the screw is provided with a hexagon socket on its top. Due to the hemispherical seat of the screw head in the support element, the screw can be pivoted with respect to the plane of the support element. However, the top of the head of the screw is exposed to the weather, so that if the screw connection is loosened, water can penetrate under the sealing membrane.
  • the head of a screw serving as a fastening means is positively received by a conical section in the cavity of the shaft.
  • An approximately umbrella-shaped cover element is screwed into an internal thread at the upper end of the shaft with a pin on the underside, which covers the support element and rests with its outer edge on the roof sealing membrane.
  • the screw is guided in the hollow of the shaft in the direction of the central axis of the support element.
  • the object of the present invention is to design a fastener of the type specified at the outset in such a way that a reliable sealing of the fastening point is ensured even with fasteners which are not exactly perpendicular to the roof surface, and that storage, transport and assembly of the parts of the fastening device are particularly important are simple.
  • the support element is arranged in a height-adjustable manner in the interior of a hood-shaped cover element lying on the sealing membrane and closed off on the underside by a base plate, its outer circumference being in engagement with the inner wall of the cover element in such a way that it is at least in its upper one or lower end position is rotatably connected to the cover element, and that the pivotable and non-positive connection of the upper end extending through the base plate
  • Fastening means with the support element is formed by an articulated body which is pivotably and non-rotatably mounted in the upper side thereof and which is connected in a rotationally fixed manner to the upper end of the fastening means.
  • the support element connected to the cover element including the joint body can be supplied as a preassembled component, so that it is only to be connected to the fastening means on the construction site.
  • the lower opening of the hood-shaped cover element is closed off by a base plate through which the fastening means penetrate, in order to prevent the sealant from penetrating into the interior of the cover element.
  • the base plate can be glued to the cover element, welded or by mechanical fasteners, such as. B. bayonet lock parts, be firmly connected.
  • the assembled support element connected to the fastening means via the joint body lies flat on the sealing membrane even when the fastening means is installed obliquely and can deviate slightly under one-sided loading.
  • the fastening according to the invention is particularly suitable for fastening roof waterproofing membranes, but also for other applications, for example for fastening films in a tunnel.
  • a secure connection of the joint body with the fastening means is achieved if a receptacle with force transmission elements is provided in the joint body, which can be brought into engagement with correspondingly designed force transmission elements at the end of the fastening means protruding from the upper side of the sealing membrane, and if the penetration depth of the upper fastener end is provided in the joint body in the axial direction.
  • the force transmission elements can be designed as detents, as bayonet-type locking parts or preferably as screw threads.
  • the limitation in the axial direction can, for example, by designing the receptacle as Blind hole or through a projection on the fastener.
  • the fastening means to be anchored therein with its lower end can be designed as a nail, a screw or the like, with screw threads usually being designed as right-hand threads.
  • the fastener can be installed using a setting machine or manually.
  • the pivotability and the securing against rotation of the joint body in the support element are advantageously achieved in that the underside of the joint body is dome-shaped and that it has projections on its outer circumference which engage in corresponding recesses in a ball socket-shaped depression in the top of the support element.
  • the projections on the outer edge of the joint body can be designed, for example, in the manner of an external hexagon or as springs, the recesses in the support element being designed to be complementary thereto, for example as an internal hexagon or as grooves.
  • a container filled with a sealant is provided in the interior of the cover element, for example a foil cushion, which opens when the support element approaches its upper or lower end position and releases the sealant.
  • the lower edge of the cover element resting on the sealing membrane can additionally be coated with a sealing agent which brings about a weather-resistant seal, in particular a weld, between the cover element and the sealing membrane.
  • a sealing agent which brings about a weather-resistant seal, in particular a weld, between the cover element and the sealing membrane.
  • a commercially available paste suitable for the respective material of the waterproofing membrane is recommended as a sealant.
  • connection elements are provided on the outer jacket of the support element, which are in engagement with correspondingly designed connection elements on the inner jacket of the cover element.
  • Screw threads can be provided as connecting elements on the outer jacket of the support element and on the inner jacket of the cover element.
  • the container for the sealant is arranged above the joint body in the center of the cover element, and transport channels for the sealant leading to the lower edge thereof are provided in the wall of the cover element. Only an opening for the passage of the fastening means is provided in the base plate.
  • the preferably toroidal container for the sealant is arranged between the support element and the base plate, and at least one passage for the sealant is provided in this. Through this passage, the sealant can reach the lower edge of the cover element and is pressed there when the cover element is screwed on.
  • a non-rotatable connection can be formed between the outer circumference of the support element and the inner wall of the cover element, which consists of ribs engaging in grooves.
  • the preferably toroidal container for the sealant is arranged between the support element and the base plate, and at least one passage for the sealant is provided in this.
  • the release of the sealant from the container when the support element approaches the base plate or the joint body to the cover element is facilitated if at least one pointed projection is provided on one of the surfaces adjacent to the container for the sealant.
  • pointed mandrels or knife edges can be provided which pierce or cut through the casing of the container containing the sealant.
  • a device for torque transmission can be arranged on the outside of the cover element, such as. B. a arranged on the top as a square pin or wells.
  • the outside of the side walls of the cover element can also be designed, for example, as a hexagon.
  • a particularly tight connection is achieved when the lower edge of the cover element resting on the sealing sheet is coated with a layer of the material used for the sealing sheet, e.g. Polyisobutene, polyvinyl chloride, bitumen or the like is provided. It goes without saying that in this case, depending on the material of the sealing membrane, differently coated cover elements are to be used.
  • a layer of the material used for the sealing sheet e.g. Polyisobutene, polyvinyl chloride, bitumen or the like is provided.
  • impact-resistant plastic such as. B. hard polyvinyl chloride recommended.
  • the coating of the lower edge can be dispensed with in the case of a cover element which is provided for fastening a sealing membrane made of polyvinyl chloride.
  • the joint body can also consist of the same material. If a high contact pressure is to be transmitted to the cover element, a design made of metal is preferred.
  • FIG. 1 shows in section a first exemplary embodiment of a fastening 10 according to the invention with a closed hood-shaped cover element 12, a disk-shaped support element 14, a joint body 15 and a fastening means 16 in a state mounted on a roof with a sealing membrane 18 made of polyisobutene.
  • a thermal insulation layer 20 is arranged under the sealing membrane 18 and rests on a steel sheet serving as a substructure 22.
  • the cover element 12 made of hard polyvinyl chloride has an outer diameter of 8 cm and a thickness of 2 cm. The lower edge of the cover element is widened in a ring to 2 cm.
  • the fastening means 16 is designed in the region of its lower end 24, which is anchored in the substructure 22, as a sheet metal screw.
  • the joint body 15 shown in plan view in FIG. 2 consists of metal and has an outer diameter of 15 mm and a thickness of 6 mm. In the area adjacent to the mouth of the blind hole 28, the joint body 15 is dome-shaped on its underside with a radius of 7 mm and has two diametrically opposite projections 30, 32 in the outer edge.
  • the articulated body 15 is supported on the support element 14 made of hard polyvinyl chloride, which is shown in plan view in FIG. 3, which is essentially disc-shaped and has an outer diameter of 4.5 cm and a thickness of 1 cm.
  • the support element 14 has in the center a through opening for the fastening means 16 and on its upper side a ball socket-shaped recess 34 for receiving the joint body 15 and two diametrically opposite recesses 36, 38, in which the projections 30, 32 of the joint body 15 can engage.
  • the support element 14 is provided on its outer circumference 40 with an external thread which is in engagement with an internal thread provided on the inner wall 42 of the cover element 12.
  • the cover element 12 On its underside, the cover element 12 is closed with a base plate 44, which has an opening in the center for the passage of the fastening means 16.
  • the fastening means 16 passes through the support element 14, the base plate 44, the sealing sheet 18 and the thermal insulation layer 20 and the substructure 22.
  • recesses 54, 56 for torque transmission are provided, into which pins of an assembly tool for screwing the fastening 10 can engage.
  • FIG. 4 shows in section a second exemplary embodiment of a fastening 110 according to the invention with a closed, hood-shaped cover element 112, a joint body 15, a disk-shaped support element 114 and a fastening means 16 in the assembled state.
  • the design of the joint body 15 and the fastening means 16 is, like the support of the joint body 15 on the support element 114, the same as the embodiment described above.
  • two ribs 141 are provided diametrically opposite one another, which engage in grooves 143 in the inner wall 142 of the cover element 112 and thus prevent the support element 114 from rotating in the cover element 112.
  • the cover element 112 On its underside, the cover element 112 is closed with a base plate 144, which has an opening in the center for the passage of the fastening means 16.
  • a toroidal pressed-out container 150 is shown between the support element 114 and the base plate 144 and is filled with a sealant 152 in the delivery state of the fastening 110.
  • the sealing means 152 is through passages 154, 156 in the Bottom plate 144 enters the space between cover element 112 and sealing membrane 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Tents Or Canopies (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Paints Or Removers (AREA)
  • Seal Device For Vehicle (AREA)
  • Building Environments (AREA)
EP92918476A 1991-08-23 1992-08-18 Befestigung einer dachabdichtungsbahn oder dergleichen Expired - Lifetime EP0599985B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4128033 1991-08-23
DE4128033A DE4128033C1 (enrdf_load_stackoverflow) 1991-08-23 1991-08-23
PCT/DE1992/000689 WO1993004243A1 (de) 1991-08-23 1992-08-18 Befestigung einer dachabdichtungsbahn oder dergleichen

Publications (2)

Publication Number Publication Date
EP0599985A1 EP0599985A1 (de) 1994-06-08
EP0599985B1 true EP0599985B1 (de) 1995-01-04

Family

ID=6438984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92918476A Expired - Lifetime EP0599985B1 (de) 1991-08-23 1992-08-18 Befestigung einer dachabdichtungsbahn oder dergleichen

Country Status (6)

Country Link
EP (1) EP0599985B1 (enrdf_load_stackoverflow)
AT (1) ATE116710T1 (enrdf_load_stackoverflow)
DE (2) DE4128033C1 (enrdf_load_stackoverflow)
DK (1) DK0599985T3 (enrdf_load_stackoverflow)
ES (1) ES2068721T3 (enrdf_load_stackoverflow)
WO (1) WO1993004243A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205140C1 (enrdf_load_stackoverflow) * 1992-02-20 1993-05-27 Braas Gmbh, 6370 Oberursel, De

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139279A (en) * 1937-02-13 1938-12-06 W H Maze Company Roll roofing fastener
DE1080821B (de) * 1952-02-05 1960-04-28 Hugo Poddig Fa Schraubbefestigung
US2953874A (en) * 1958-10-27 1960-09-27 Orlan C Kindorf Concrete insert with swivel support for conduits or the like
GB1116444A (en) * 1965-06-21 1968-06-06 Robertson Co H H Improvements in or relating to snap-on cap and washer assemblies for screw-fasteners
DE7031546U (de) * 1970-08-22 1971-04-01 Grebau Greschbach Ind Bauelementensatz zur herstellung eines zweischaligen kaltdaches fuer hallen
US4860513A (en) * 1988-01-25 1989-08-29 Whitman Robert E Roofing fastener
DE3926255C2 (de) * 1989-08-09 1994-06-30 Hardo Befestigungen Gmbh Befestigung einer auf einer Wärmedämmschicht aufliegenden Dachdichtungsbahn

Also Published As

Publication number Publication date
WO1993004243A1 (de) 1993-03-04
DE59201158D1 (de) 1995-02-16
EP0599985A1 (de) 1994-06-08
DK0599985T3 (da) 1995-06-26
ES2068721T3 (es) 1995-04-16
ATE116710T1 (de) 1995-01-15
DE4128033C1 (enrdf_load_stackoverflow) 1992-11-19

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