EP0446890B1 - Befestigungsvorrichtung - Google Patents

Befestigungsvorrichtung Download PDF

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Publication number
EP0446890B1
EP0446890B1 EP91103830A EP91103830A EP0446890B1 EP 0446890 B1 EP0446890 B1 EP 0446890B1 EP 91103830 A EP91103830 A EP 91103830A EP 91103830 A EP91103830 A EP 91103830A EP 0446890 B1 EP0446890 B1 EP 0446890B1
Authority
EP
European Patent Office
Prior art keywords
load
distribution plate
connecting device
edge
lever
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
EP91103830A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0446890A1 (de
Inventor
Hans Joachim Prof. M.Sc. Gerhardt
Carl Prof. Dr.-Ing. Kramer
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.)
WSP Ingenieurgesellschaft fuer Waermetechnik Stroemungstechnik und Prozesstechnik mbH
Original Assignee
WSP Ingenieurgesellschaft fuer Waermetechnik Stroemungstechnik und Prozesstechnik mbH
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 WSP Ingenieurgesellschaft fuer Waermetechnik Stroemungstechnik und Prozesstechnik mbH filed Critical WSP Ingenieurgesellschaft fuer Waermetechnik Stroemungstechnik und Prozesstechnik mbH
Publication of EP0446890A1 publication Critical patent/EP0446890A1/de
Application granted granted Critical
Publication of EP0446890B1 publication Critical patent/EP0446890B1/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
    • E04D5/141—Fastening means therefor characterised by the location of the fastening means
    • E04D5/142—Fastening means therefor characterised by the location of the fastening means along the edge of the flexible material
    • 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

Definitions

  • the invention relates to a fastening device for securing the position of loosely laid mechanically fastened sealing sheets, in particular roof sealing sheets, of the type specified in the preamble of claim 1.
  • Roof sealing sheets are often laid loosely on flat or slightly inclined roof surfaces and mechanically fastened to prevent them from lifting under wind suction loads.
  • this mechanical fastening is carried out point by point by means of a fastening means, generally a screw, and by means of a receiving element Load distributor plate near the edge of the track.
  • the roofing membrane subsequently laid is then tightly fastened to cover the edge of the membrane perforated by the fastening.
  • the tight connection can be made by hot air welding or source welding.
  • rectangular, square or circular load distribution plates are used, as is known, for example, from EP-A-0 283 184, but also from DE-A-34 20 863 (FIG. 3).
  • the fastener that is to say the screw
  • the fastener is passed through a hole arranged centrally in the load distributor plate and anchored in the substructure on which the sealing sheets rest.
  • This substructure often consists of profiled sheets.
  • the sealing membranes are raised, whereby the load distributor plate is loaded on one side.
  • This load causes a tilting movement, by means of which the load distributor plate is raised somewhat to its edge, which faces the edge of the overlapping web and runs parallel to this.
  • the central passage of the fastening screw through the load distribution plate leads to a tensile force in the fastening screw which corresponds approximately to twice the attacking wind suction force and which must be introduced into the base.
  • the invention is therefore based on the object to reduce the load to be absorbed by the fastener and the support and a relatively low clamping effect between the tilted load distribution plate when fastening the specified type and to avoid the edge of the underlying membrane.
  • the advantages achieved by the invention are based on the asymmetrical shape of the load distributor plate with respect to the tilting axis (significant decrease in the width of the load distributor plate from its edge near the fastening means towards the opposite edge) in connection with the eccentric arrangement of the fastening means, which results in a particularly favorable surface pressure between the load distributor plate and the covered edge of the geomembrane is reached.
  • Loads resulting from the sealing sheeting taking off under the influence of wind are absorbed in such a way that only low tensile forces are generated in the fastening means and transmitted to the substructure.
  • it is avoided that the sealing sheet is no longer held sufficiently on the base by the load distribution plate and there is therefore a risk that the sealing sheet could tear out.
  • the load distribution plate can be manufactured particularly easily and economically and, moreover, can cope with almost any load situation.
  • An all-round stiffening bead in the edge area of the load distributor plate ensures additional mechanical strength while improving the clamping effect.
  • a load distributor plate 4 with the shape shown in FIG. 1 has proven itself in tests in which a roof cutout has been exposed to a simulated wind load.
  • This load distribution plate 4 is essentially triangular, i.e. its width decreases significantly from the edge 7a to the opposite edge 6a. In its edge area, the load distributor plate 4 has a circumferential stiffening bead 8.
  • FIG. 2 shows a typical roof structure with a substructure 1, which is formed by a profiled sheet, a thermal insulation layer 2 resting on the substructure 1 and a first roof sealing membrane 3, the edge region of which is secured by means of the load distribution plate 4 and the fastening means 5 anchored in the substructure 1 is clamped on the thermal insulation layer 2. This attachment is therefore on the edge region of the sealing membrane 3.
  • an overlapping second roof sealing membrane 3a extends from the left over the fastening and is connected with its edge on the right side of the fastening to the upper side of the first sealing membrane 3, for example hot air welded or source welded.
  • the two sealing sheets 3, 3a deform upward in the form of a membrane, as is indicated in FIG. 2.
  • the load distributor plate 4 is loaded on one side, namely by a force acting on the load distributor plate 4 on its edge 7a running parallel to the two roof sealing sheets 3, 3a. This creates a tilting moment around the tilting axis 15 of the load distributor plate 4 running through the hole 14 (see FIG. 1).
  • the load distribution plate 4 shown in FIG. 1 is thus arranged between the lower edge of the first sealing sheet 3 and the overlapping edge of the second sealing sheet 3a such that its edge 7a extends parallel to the edges of the two sealing sheets 3, 3a.
  • the hole 14 and thus the fastening means 5 are located off-center in the load distribution plate 4, namely closer to the edge 7a, which faces the connection area between the edges of the two roofing sheets 3, 3a.
  • the distance from the hole 14 or from the fastening means 5 to the opposite edge 6a of the load distributor plate 4 forming a tip is therefore substantially greater than the distance from the edge 7a to the hole 14, as a result of which there is a favorable surface pressure in the region of the edge 7a the load distribution plate 4 and the covered edge of the first sealing sheet 3 comes.
  • the tensile force to be absorbed by the fastening means 5 and by the substructure 1, which results from the wind suction load on the sealing sheets 3, 3a and Suction force acting on the edge 7a of the load distributor plate 4 is less than when the hole 14 is arranged centrally in the load distributor plate 4.
  • the above-mentioned favorable surface pressure is achieved in particular in that the load distributor plate 4 is asymmetrical to an axis which runs parallel to the longitudinal direction of the web (tilt axis 15).
  • the width of the load distributor plate 4, measured in the longitudinal direction of the web, clearly decreases from its edge 7a, which is closer to the fastening means 5, to the opposite edge 6a, and thus leads to the desired good surface pressure in connection with the lever action described.
  • the load distributor plate 4 can be provided with additional deformations in addition to the stiffening bead 8, which improve the distribution of the loads that occur and increase the rigidity of the load distributor plate 4 in relation to the bending loads that occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
EP91103830A 1990-03-16 1991-03-13 Befestigungsvorrichtung Expired - Lifetime EP0446890B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4008517A DE4008517C1 (enExample) 1990-03-16 1990-03-16
DE4008517 1990-03-16

Publications (2)

Publication Number Publication Date
EP0446890A1 EP0446890A1 (de) 1991-09-18
EP0446890B1 true EP0446890B1 (de) 1994-11-30

Family

ID=6402401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103830A Expired - Lifetime EP0446890B1 (de) 1990-03-16 1991-03-13 Befestigungsvorrichtung

Country Status (3)

Country Link
US (1) US5171116A (enExample)
EP (1) EP0446890B1 (enExample)
DE (2) DE4008517C1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797232A (en) * 1996-08-15 1998-08-25 Illinois Tool Works Inc. Gripping plate for attaching roofing membrane
US6205730B1 (en) 1999-01-13 2001-03-27 Illinois Tool Works Inc Roofing plate for securing roofing membrane
US6689449B2 (en) * 2002-01-04 2004-02-10 Illinois Tool Works Inc. Roof decking membrane welding system and method
US7178306B2 (en) * 2003-09-30 2007-02-20 Duro-Last, Inc. Single ply roofing systems and methods of constructing them
US8590245B2 (en) * 2009-06-04 2013-11-26 Owens Corning Intellectual Capital, Llc Banded liner system for metal buildings
US9309911B1 (en) * 2012-01-23 2016-04-12 K & R Industries Inc. Cap nail

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR884660A (fr) * 1942-04-01 1943-08-24 Rondelle destinée en particulier à la fixation des tôles ondulées
FR1499940A (fr) * 1966-04-22 1967-11-03 Dispositif de soutènement des parois rocheuses
DE2636663A1 (de) * 1976-08-14 1978-02-16 Ruhrkohle Ag Befestigungslasche aus blech zum festlegen von insbesondere aus thermoplastischem werkstoff bestehenden dichtungsbahnen
DE3236161C2 (de) * 1982-09-30 1984-11-22 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Geschlitzte Unterlegscheibe zum Aufstecken auf den durch ein Schraubenloch eines Leuchtengehäuses ragenden Schaft einer Befestigungsschraube
AT380051B (de) * 1983-06-22 1986-04-10 Sfs Stadler Ag Vorrichtung zum befestigen von dachbahnen auf weichem isoliermaterial an einer festen unterlage
US4780039A (en) * 1983-09-19 1988-10-25 The B. F. Goodrich Company Fastener plate
US4630984A (en) * 1984-01-27 1986-12-23 Elco Industries, Inc. Assembly for fastening a layer of compressible material to a rigid member
US4787188A (en) * 1986-01-02 1988-11-29 Engineered Construction Components Stress plate and method of using same for securing a roof membrane to a roof deck
US4631887A (en) * 1986-01-31 1986-12-30 Francovitch Thomas F Non-penetrating roof membrane anchoring system
CH676133A5 (enExample) * 1986-03-12 1990-12-14 Protan As
US4718211A (en) * 1986-10-29 1988-01-12 Greenstreak Plastic Products Company Batten bar for single ply membrane used on roofs
US4726164A (en) * 1987-03-16 1988-02-23 Elco Industries, Inc. Fastener assembly for a roof membrane

Also Published As

Publication number Publication date
EP0446890A1 (de) 1991-09-18
DE4008517C1 (enExample) 1991-09-05
US5171116A (en) 1992-12-15
DE59103612D1 (de) 1995-01-12

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