EP0028893B1 - Structure de toiture à isolation thermique et couverture d'isolant thermique pour cette structure de toiture - Google Patents

Structure de toiture à isolation thermique et couverture d'isolant thermique pour cette structure de toiture Download PDF

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Publication number
EP0028893B1
EP0028893B1 EP80303771A EP80303771A EP0028893B1 EP 0028893 B1 EP0028893 B1 EP 0028893B1 EP 80303771 A EP80303771 A EP 80303771A EP 80303771 A EP80303771 A EP 80303771A EP 0028893 B1 EP0028893 B1 EP 0028893B1
Authority
EP
European Patent Office
Prior art keywords
purlin
sleeve
purlins
web
heat insulating
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
Application number
EP80303771A
Other languages
German (de)
English (en)
Other versions
EP0028893A2 (fr
EP0028893A3 (en
Inventor
Frederick Charles Coles
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.)
Anglia Jay Purlin Co Ltd
Original Assignee
Anglia Jay Purlin Co 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
Application filed by Anglia Jay Purlin Co Ltd filed Critical Anglia Jay Purlin Co Ltd
Publication of EP0028893A2 publication Critical patent/EP0028893A2/fr
Publication of EP0028893A3 publication Critical patent/EP0028893A3/en
Application granted granted Critical
Publication of EP0028893B1 publication Critical patent/EP0028893B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1612—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
    • E04D13/1625—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters with means for supporting the insulating material between the purlins or rafters
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1612—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
    • E04D13/1637—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters the roof purlins or rafters being mainly insulated from the interior, e.g. the insulating material being fixed under or suspended from the supporting framework

Definitions

  • the inverted tee-bars may seat in locating slots pressed out from the inturned flanges of the outer sleeve of the insulating sleeve assembly, retaining clips being located over said inverted tee-bars and under the ends of the inturned flanges adjoining the slots in order to secure the inverted tee-bars in position.
  • the angled lip 22 is hooked over the upturned lip 15 of the purlin bottom flange 14 temporarily to provide sole support for said sleeve.
  • the latter is then pivoted up against the underside of the purlin bottom flange 14, and fixed in position by means of the retaining clips 24.
  • This is a relatively simple task, since it requires no matching of the holes in the purlin 10 with any particular points on the sleeve 16, as the retaining clips can be positioned substantially anywhere along the sleeve 16 subject to the requirement for reasonably uniform support.
  • a strap 1 6A fits over the butt joint between adjacent sleeves 16.
  • Rigid self-supporting panels 31 of insulating, fire-retardant plastics materials are laid in the open rectangular trays formed by the substantially coplanar top surfaces of the flanges 18, 19 and of the crosspieces of the inverted tee-bars 29.
  • the panels 31 are held down in the trays against lift by suitable pressure clips (not shown) mounted on the purlins and/or tee-bars. These panels 31 form a substantially flat ceiling to the building interior.
  • the above-described arrangement has the advantages of substantially eliminating any cold bridge which could permit heat transfer through the purlins 10, 10A from the warm building interior to the cold space above the insulating layer 31, and of providing a cold space of substantial depth below the outer roof covering (not shown) which is fixed in a conventional manner to the top flanges 11 of the purlins.
  • this cold space of substantial volume is readily ventilated, thus minimising risk of condensation problems. It is also to be noted that the whole structure is assembled of fire-retardant materials.
  • the positioning of the drilled holes for the fixings 27 in the purlin for the clips 24 is not critical, since there is no requirement for positioning of these retaining clips in relation to the length of the insulating sleeve assembly except in so far as a reasonably uniform support is desirable.
  • the outer sleeves 1 6, the insulating sleeve retaining clips 24 and butt straps 16A provided to cover the butt joints between adjacent insulating sleeve assemblies, may all be formed of cold rolled steel cut to length as necessary, although, as previously mentioned, the outer sleeves 16 may alternatively be produced of a relatively rigid plastics material.
  • the insulating sleeve assembly 16, 17 minimises any cold bridge between the building interior and the cold space above the insulating layer 31. Only a minimum of heat conduction can occur through the insulating sleeve retaining clips 24, and this, can be substantially eliminated by introducing the above-mentioned insulating washer on the bolt fixing said clips to the main web of the purlin.
  • the cold space above the insulating layer 31 can readily be ventilated, for example by means of louvred barge boards at the gable ends of the building. Problems of condensation are therefore also minimised. It will also be apparent that it is possible to revert to the use of standard length hook members for securing the outer roofing sheets in position, thus reducing the likelihood of deformation occurring within the roof structure.
  • FIG. 8 The form of a multibeam purlin appears clearly from Figure 8. It has a main web 36 with angled portions 37, 38 to provide improved stiffness against twisting and deformation generally, an upper transverse web 39 with depending lip 40, and a lower transverse web 41 with an upstanding lip 42.
  • the insulating sleeve assembly 16, 17 is substantially identical with that previously described, although it can be seen by comparison of Figures 7 and 8 that, for the multibeam purlin 35, the limbs of the U-shaped insulating filler 17 can be of equal width instead of the unequal widths shown for the Z-purlin.
  • the J-purlin 45 has a main web 46, preferably but not essentially incorporating an angled portion 47 connecting to an upper transverse web 48 having a depending lip 49.
  • the angled portion 47 stiffens the fold where the main web 46 connects to the transverse web 48, assuming the purlin to be produced by cold rolling.
  • the J-purlin has base webs 50, 51 respectively projecting to opposite sides of the main web 46.
  • the J-purlin is preferably formed from steel plate by cold rolling, and in accordance with this method production, the two oppositely directed base webs 50, 51 are formed by folding the steel plate back beneath itself to form one base web, the web 50, of a double thickness of metal (although the two steel layers thereof are not necessarily in close contact).
  • the other base web 51 has a single thickness of metal, but is stiffened with an upstanding lip or, as illustrated, a folded over lip 52.
  • the insulating sleeve assembly 53, 53A, 54, 54A does not in itself have to provide a tee-bar supporting platform on one side of the main web of the purlin. It will also be noted from Figures 3 and 9 that the sleeve retaining clips 24 are no longer required.
  • FIG 10 employing identical reference numerals to Figures 1 and 4, is employed to show in enlargement the manner in which the sleeve assembly 16, 17 serves to locate the ends of the tee-bars 29.
  • the form of a tabbed retaining clip 30 in relation to a broken-off tee-bar 29 is clearly shown on the left-hand side of the figure, while the manner in which a locating recess 23 is formed in the upper flange 18 of the outer sleeve 16 of the sleeve assembly, by partly severing and folding a portion 23A of said flange 18, is also more clearly shown.
  • the lateral tabs 30A on the retaining clip 30 fit under the edge portions 18A of the flange 18 adjacent the recess 23 in order to secure the tee-bar 29 in position.
  • Figure 10 also serves to illustrate an alternative locating means for the end of a tee-bar 29, which may be optionally provided in place of the locating recess 23 in the upper flange 19 of the outer sleeve 16 on the opposite side of the purlin from the flange 18 (the purlin, and likewise the angled lip 22 on the flange 18 of the outer sleeve 16, are for clarity omitted in Figure 10).
  • This comprises a T-slot 60 cut in the flange 19, into which the end of the tee-bar 29 is received directly, the lateral webs of the tee-bar engaging under the flange 19 at the edge portions thereof adjoining the T-slot.
  • a located tee-bar is indicated at 29A in Figure 10.
  • FIG 11 the right-hand part 53A, 54A of a longitudinally split sleeve assembly of the kind shown in Figure 6 is illustrated in enlargement. The purpose is to show the locating recess 23. In a J-purlin arrangement, it is preferred not to employ locating T-slots of the form shown in Figure 10. However, in all embodiments, various alternative forms of tee-bar locating means may be employed, preferably means carried by the insulating sleeve assembly.
  • a vapour sealed heat insulating roof structure in accordance with the invention is shown in Figure 12.
  • the preferred arrangement comprises a plurality of spaced parallel roof purlins. Conveniently, these purlins are Z-purlins 10, 10A as previously described with reference to Figure 7, and the same reference numerals are again employed. Again, as previously described with reference to Figures 4 and 7, the base webs 14 of the purlins 10, 10A are sheathed with insulating sleeve assemblies 16, 17.
  • the trays 70 are supported in side-by-side relationship along the lengths of the purlins 10, 10A with the side walls, 71 and 73 respectively, of adjacent trays juxtaposed.
  • the lipped upper edge 72 of the wall 71 interlocks with the hooked upper edge 74 of the wall 73 of the adjacent tray, and is received into the plastic sealant to form a vapour seal therewith.
  • the sheet metal trays 70 are insulated from the base webs 14 of the purlins 10, 10A by the insulating sleeve assemblies 16, 17.
  • strips 75 of plastic or mastic sealant are laid along the inturned flanges 18, 19 of the outer sleeves 16, on which the end edges of the trays 70 are received when the trays are placed in position.
  • the trays 70 are then rivetted through the sealant to the inturned flanges 18, 19, as indicated at 76, in order to prevent vacuum lift, i.e. lifting of the trays due to air pressure changes in the building space below.
  • the sealant strips 75 ensure a vapour seal between the trays and the purlin assemblies.
  • Insulation conveniently in the form of slightly oversized insulating panels 31, is then located in the trays 18.
  • the panels 31 being oversized, they expand to abut one another over the tops of the interlocked side walls 71 and 73 of the trays 70.
  • the above-described arrangement is essentially an inter-purlin heat insulating system, like that described with previous reference to any of Figures 1 to 3.
  • the outer roof skin conventionally asbestos sheets, can be secured to the tops of the purlins 10, 10A in the usual manner, i.e. by means of hooked bolts which fix to the upper lateral webs 11 of the purlins.
  • the above-described interlocking side walls for the trays are not essential, since other means can be devised for producing a vapour seal between the juxtaposed side edges of adjacent trays.
  • Other sealing means may be employed between the sheet metal trays and the purlins, and such means may also serve as insulation.
  • FIG 14 which will be clear without detailed description, shows a vapour sealed heat insulating roof structure based on J-purlins 45.
  • the same reference numerals are employed as in previously described Figures 6, 9, 12 and 13.

Claims (6)

1. Structure de toit calorifuge comprenant une pluralité de pannes de toit (10, 10A ou 35, 35A ou 45, 45A) disposés à distance parallèlement les unes aux autres et comportant chacune au moins une aile de base latérale, et des trasverses 29 ou 70 supportées entre lesdites pannes et comprenant ou portant une couche de matériau calorifuge (31), un composant de construction réalisé sous la forme d'un manchon calorifuge, retardant l'action du feu et protégeant la ou les âmes de base de chaque panne (10, 1 OA ou 35, 35A ou 45, 45A) et apte à supporter les traverses métalliques (29) sand créer un pont conducteur de la chaleur entre elles-mêmes et la panne, caractérisé en ce que ledit composant en forme de manchon est constitué par l'ensemble d'un manchon extérieur rigide retardant l'action du feu (16, 53 ou 56) muni d'un élément de remplissage calorifuge (17, 54 ou 57) comportant un renfoncement ou une fente en vue de recevoir la ou les ailes de base (14 ou 41, ou 50, 51) de la panne, et que le manchon extérieur rigide définit à la fois la surface inférieure dudit composant et la surface supérieure de ce dernier, qui fournit un support pour les traverses au même niveau des deux côtés de l'âme principale de la panne au-dessus du niveau de la ou des ailes de base de cette dernière, tandis que l'élément de remplissage isole ledit manchon extérieur par rapport à la panne.
2. Structure selon la revendication 1, caractérisée en outre en ce que lesdites traverses supportées entre les pannes sont constituées par des barres en T renversé qui forment des châssis en forme de cadres rectangulaires définis chacun par deux composants en forme de manchon opposés et deux traverses opposées, et que des moyens de retenue des traverses sont ménagés sur le manchon extérieur de chaque composant d'un manchon afin de permettre l'alignement des traverses sur des côtés opposés de l'âme principale de la panne, lesdits moyens de retenue comprenant des parties (23) évidées dans l'aile supérieure (18 ou 19) du manchon extérieur de manière à réaliser un logement en renfoncement entre les extrémités des barres en T, et des pinces chevauchantes à pattes (30) destinée à être montées sur les extrémités des barres en T et dont les pattes e'engagent au-dessous de l'aile supérieure du manchon extérieur voisin des parties évidées.
3. Structure selon la revendication 1, caractérisée en outre en ce que lesdits traverses soutenues entre les pannes comprennent une pluralité de plateaux formant casiers (70), que chaque plateau formant casier comporte des parois latérales opposées (71, 73) disposées transversalement par rapport aux pannes et adaptées à engrener avec une action de verrouillage, moyennant la disposition d'un élément d'étanchéité, de manière à réaliser une étanchéité à la vapeur au niveau des bords latéraux voisins de plateaux voisins, et que l'élément d'étanchéité en forme de bande (75) est pris en sandwich entre les composantes à manchon et les bords d'extrémité des plateaux formant casiers, lesdites extrémités des plateaux formant casiers étant fixées aux composants à manchon.
4. Structure selon l'une quelconque des revendications 1 à 3, caractérisée en outre en ce que chaque panne comporte des ailes de base respectives faisant saillie sur des côtés opposés de l'âme principale de la panne et possédant une section transversale de forme générale de "J" renversé et que le composant à manchon se compose de deux parties fendues longitudinalement (53, 53A, et 54, 54A), qui sont chacune prévues pour une aile de base de la panne, et que des bandes de retenue (55) sont prévues de manière à maintenir lesdites deux pièces du manchon dans un état assemblé réalisant une protection des deux ailes.
5. Structure selon l'une quelconque des revendications 1 à 4, caractérisée en outre en ce que chaque panne comporte une aile de base faisant saillie d'un seul côté de son âme principale, en constituant une panne à poutres multiples ou une panne possédant une section transversale en forme générale de Z, et que du côté de l'âme principale de la panne, qui est à l'opposé de l'aile de base latérale, il est prévu une pince de retenue (24) servant à fixer le composant à manchon à la panne, et que le composant à manchon possède une aile supérieure (18) comportant un rebord tombant (23) disposé de manière à permettre, pendant le montage du composant à manchon sur l'aile de base de la panne, une suspension dudit composant à ladite aile de base.
6. Structure de toit calorifuge selon l'une quelconque des revendications 1 à 5, caractérisée en outre en ce que le manchon extérieur rigide (16, 53 ou 57) est constitué par de l'acier laminé à froid.
EP80303771A 1979-11-08 1980-10-24 Structure de toiture à isolation thermique et couverture d'isolant thermique pour cette structure de toiture Expired EP0028893B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
GB7938647 1979-11-08
GB7938647 1979-11-08
GB8013454 1980-04-23
GB8013454 1980-04-23
GB8015917 1980-05-14
GB8015917 1980-05-14
GB8026740 1980-08-16
GB8026740 1980-08-16

Publications (3)

Publication Number Publication Date
EP0028893A2 EP0028893A2 (fr) 1981-05-20
EP0028893A3 EP0028893A3 (en) 1981-07-22
EP0028893B1 true EP0028893B1 (fr) 1984-02-01

Family

ID=27449146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80303771A Expired EP0028893B1 (fr) 1979-11-08 1980-10-24 Structure de toiture à isolation thermique et couverture d'isolant thermique pour cette structure de toiture

Country Status (5)

Country Link
EP (1) EP0028893B1 (fr)
AU (1) AU537808B2 (fr)
CA (1) CA1148323A (fr)
DE (1) DE3066420D1 (fr)
GB (1) GB8312779D0 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218375B1 (fr) * 1985-09-10 1992-06-03 Pre-Formed Components Limited Protection contre le feu pour planchers et plafonds
GB2194262B (en) * 1986-08-20 1990-04-04 Frederick Charles Coles Improvements in heat-insulated building arrangements

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB909736A (en) * 1960-04-29 1962-10-31 Olof Oskar Hogman Improvements in or relating to false ceilings
GB1104685A (en) * 1964-07-17 1968-02-28 Tentest Company Ltd Improvements in or relating to structural systems
US3319389A (en) * 1964-08-04 1967-05-16 B & L Lighting Company Suspended ceiling assembly including interlocking grid members and cover moldings
GB1072005A (en) * 1964-12-04 1967-06-14 Harold Stier Wood Improvements in and relating to the insulation of roofs
FR1516864A (fr) * 1966-12-22 1968-02-05 Ferodo Sa éléments de construction composites et leurs applications, notamment pour la réalisation de faux-plafonds à l'épreuve du feu
FR2146119B3 (fr) * 1971-07-19 1974-04-05 Saret
FR2234432A1 (en) * 1973-06-19 1975-01-17 Brioude Yvon Seal for false ceilings - consists of PVC shaped piece to prevent thermal bridges
US4014150A (en) * 1975-12-19 1977-03-29 Johns-Manville Corporation Insulation system for building structures

Also Published As

Publication number Publication date
AU537808B2 (en) 1984-07-12
DE3066420D1 (en) 1984-03-08
AU6360680A (en) 1981-05-14
EP0028893A2 (fr) 1981-05-20
EP0028893A3 (en) 1981-07-22
GB8312779D0 (en) 1983-06-15
CA1148323A (fr) 1983-06-21

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