EP0035148A1 - Structure pour le montage ultérieur de l'extérieur ondulé d'un bâtiment - Google Patents

Structure pour le montage ultérieur de l'extérieur ondulé d'un bâtiment Download PDF

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Publication number
EP0035148A1
EP0035148A1 EP81101018A EP81101018A EP0035148A1 EP 0035148 A1 EP0035148 A1 EP 0035148A1 EP 81101018 A EP81101018 A EP 81101018A EP 81101018 A EP81101018 A EP 81101018A EP 0035148 A1 EP0035148 A1 EP 0035148A1
Authority
EP
European Patent Office
Prior art keywords
inner sheath
strips
building structure
roof
crests
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP81101018A
Other languages
German (de)
English (en)
Inventor
James A. Berry
Morton Sherman
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.)
Celotex Corp
Original Assignee
Celotex Corp
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 Celotex Corp filed Critical Celotex Corp
Publication of EP0035148A1 publication Critical patent/EP0035148A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E04D13/1643—Insulation of the roof covering characterised by its integration in the roof structure the roof structure being formed by load bearing corrugated sheets, e.g. profiled sheet metal roofs
    • E04D13/165—Double skin roofs
    • 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
    • E04D3/3608—Connecting; Fastening for double roof covering or overroofing

Definitions

  • This invention relates to a structure for retrofitting corrugated building exteriors.
  • the present invention provides a building structure comprising a corrugated-like inner sheath coh- figurated with crests and valleys, a plurality of rigid metal securement strips applied in a spaced arrangement over the inner sheath. so as to transversely span the crests of the sheath an outer weather-resistant covering applied over the rigid metal securement strips, and connecting means for securing said building elements together.
  • the present invention also provides a method of installing an exterior structure onto an existing corrugated-like inner sheath configurated with crests and valleys, comprising securing a plurality of rigid metal securement strips in a spaced arrangement over the inner sheath so as to transversely span the crests of the sheath, and further securing an outer weather-resistant covering over the rigid metal securement strips.
  • the metal strips securely attach a retrofitting structure to the exterior of a corrugated-like building structure without basically altering the preexisting building structure.
  • the metal strips are applied so as to span the surface profile of the existing building structure from edge to edge in a grid-like manner, the strips being positioned on and lying transverse to the crests of said exterior.
  • An insulation layer may be applied over the network of rigid metal strips to provide a complete insulating envelope over the existing building structure.
  • the outer weather-resistant covering is applied over the insulation to form a weatherproof barrier.
  • the assembly of rigid metal securement strips of the invention provides a unique interface between existing and new building structures, and functions as both an attachment means and a support for the application of the new retrofitted structure to the existing one.
  • the interface securement system of the invention can be utilized for the external retrofit of an insulation board and covering assembly to the corrugated exteriors of both roofs and walls.
  • the securement system is especially suited for the retrofit of existing buildings with corrugated cement asbestos roofs and walls, where the existing panel hook bolts can be used for securing the system, without the need for any loosening or removal of the hook bolts.
  • an existing roof structure 10 comprising, in general, a roof sheet 11 secured to a supporting skeletal framework, which is provided by a plurality of spaced, longitudinally extending purlins 12 (only one shown in Figure 1).
  • the roof of a commercial building might have 23 such purlins.
  • the purlins are conventionally mounted on underlying rafters in a parallel spaced relation.
  • Each purlin 12 preferably has an approximately I-shaped cross-sectional configuration formed by a longitudinally extending upper flange 13 connected to a lower flange 14 by a central web portion 15, the upper and lower flanges extending perpendicularly to web 15.
  • the configuration of purlin 12 can be formed such that relatively thin light material can be used to fabricate the purlin which yet retains sufficient strength to form adequate support in the roof structure.
  • the roof sheet 11 comprises a cement asbestos composite, a suitably protected metal sheeting, such as painted galvanized steel, painted aluminum alloys, asphalt- asbestos coated galvanized steel, etc. or any other conventional existing roof structure and usually consists of a plurality of individual sections 16.
  • Sections 16 have a generally corrugated profile, which is characterized by crests 17 and valleys 18 connected by inclined side walls 19 (.See Figure 1).
  • the crested profile of the existing roof sheet to be retrofitted in accordance with the invention can have a virtually unlimited number of configurations, both sinusoidal and non-sinusoidal. Any existing roof surface which has crests capable of being spanned can be retrofitted.
  • FIG. 1 The cross-sectional profile of another such existing roof sheet 11' configurated with crests and valleys is illustrated in Figure 2.
  • Sections 16 are adapted to span over the upper surfaces of adjacent purlins 12. This roof sheet arrangement, however, may vary with the specific building site being retrofitted.
  • the individual sections 16 are contiguously aligned in an overlapping side-by-side and end-to-end arrangement to form the existing roof sheet 11, and are secured together to purlins 12, with 4 sections overlapping in the roof field and 2 sections overlapping at the roof perimeter.
  • the attachment can be accomplished by any suitable fastening means, including rivets, nuts and bolts, etc.
  • Each roof section 16 can also be secured to purlin 12 at various intermediate points along its side length, such as at point 21 shown in Figure 1. Roof sections 16 are advantageously secured to purlins 12 by fasteners placed through their crest portions.
  • Fastener 22 comprises a roof bolt 23 clamping the purlin 12 and section(s) 16 together and extending through section(s) 16 with a washer and nut combination 24 securing the section(s) at the upper end of the bolt.
  • the washer and nut combination 24 is located adjacent the upper surface and at the crest of a given roof sheet section, with the upper end 25 of the bolt projecting a short distance beyond the washer and nut combination.
  • a weatherproof cap or shield is placed over the exposed portion of bolt 23 above washer and nut combination 24 to protect the threads, otherwise exposed to the elements.
  • each attachment strip 26 comprises an elongated sheet of metal which is secured to the existing roof structure, preferably at points along the upper surface of the roof sheet 11 at the crests thereof. Suitable methods of securement include through fasteners to the existing purlin or girt, welding to the existing roof or wall sheet, etc.
  • Securement strip 26 advantageously comprises a long, narrow, rigid strip of metal which is applied transversely to the crests 17 of roof sheet 11.
  • a number of strips 26 can be placed lengthwise one after the other in an end-to-end abutting or overlapping arrangement to thereby span the entire roof sheet being covered in a continuous manner from one edge of the roof to the other. Rows of strips 26 are spaced from each other to form a spaced grid.
  • One such overlapping point 27 of two aligned strips is shown in Figure 1.
  • the sheet metal strip 26 of this invention provides excellent structural characteristics while reducing weight and providing a structural shape which can be readily fabricated from sheet metal.
  • Strips 26 can be fabricated with varying characteristics to meet different requirements of shape, strength, weight, thickness ratio, etc. For example, in roofs the strips must have sufficient lateral strength to support whatever loading is placed thereon and to resist wind loadings that might tend to lift the roof assembly.
  • the securement strips of the invention can have anv convenient shape and thickness that accomplish the dual purposes of securing and supporting the retrofitted building assembly to the existing corrugated structure. In some cases the existing configuration may dictate special adaptations of the strips, as illustrated by the dimples utilized in the roof structure of Figures 1, 3, and 4.
  • Strip 26 can suitably have a thickness gauge of from about 18 to 12 gauge.
  • securement strips 26 are fabricated from 16 gauge galvanized metal.
  • FIG. 3 -4 Two embodiments of the securement strip of the invention are illustrated in Figures 3 -4 and Figure 5.
  • the embodiment illustrated in Figures 3 -4 has a central section 29 with downwardly and outwardly extending sidewalls 30 and 31 integrally connected along the longitudinally extending edges 32 and 33, respectively, of the central section, and with apertured dimples 34 spaced along its length.
  • Central section 29 is parallel to the upper surface of purlin flange 13.
  • Sidewalls 30 and 31 are disposed at an acute angle a with reference to the plane of central section 29. Angle a may vary from about 0 o to 90, relative angle to the plane of central section 29.
  • the horizontal distance b (see Figures 3 and 4) between the free edges of sidewalls 30 and 31 may be 3 3/4 inches; the height of central section 29 above the horizontal plane perpendicular to crest 17 may be 3/8 inch; the diameter of dimple 34 at its base may be 1 inch; the height of dimple 34 above central section 29 may be 1/4 inch; the diameter of hole 35 of the dimple may be 3/8 inch; and the acute angle a o may be a 45 angle.
  • the metal securement strips or plates 26 of the invention are applied to the top surface of the existing roof, the plates being applied directly over and parallel to the existing purlins.
  • the points of attachment of strips 26 to roof sheet 11 are made to coincide with locations of the washer/nut/bolt end or shank 25 assemblies which project above sheet 11.
  • Dimples 34 (see Figures 3 and 4) are centrally located along the central section 29 of each strip 26 to accommodate these projecting assemblies.
  • Dimple 34 forms an apertured, convex-shaped cover for the enclosed assembly with central hole 35 through which extends the upper free end portion or shank 25 of bolt 23. It is a simple matter to place strip 26 over the aligned upper ends 25 of exposed bolts 23 after removing the protective cap from each bolt. After the placement of the strip, a washer and nut 36 are placed over the strip 26. In the fully-fastened position, washer and nut 36 are positioned on dimple 34.
  • Figure 5 shows an alternative embodiment of the strip of the invention comprising a long, relatively thin strip of metal 28 which is flat and without a dimple at its fastener opening.
  • This strip can be utilized, for example, where there are no projecting assemblies, such as those previously described, above roof sheet 11.
  • thermal insulating material 37 is secured over the installed securement strips 26.
  • Thermal insulating material 37 can advantageously comprise a rigid foam plastic thermal insulation board which is nailed or otherwise secured as a sheathing to form an insulating layer between old roof 11 and the outside new roof sheet 38, as necessary for weathering requirements not otherwise provided by the exterior of the new thermal insulation layer (see Figure 1).
  • the preferred foam plastic thermal insulation board 37 is a product made with a polyurethane or polyisocyanurate foam core with metal sheet facers. These facers may be aluminum adhered to the face of the foam core during the process of manufacture. The aluminum facers can act as heat reflective surfaces and as liquid or gas barriers, since the metal sheets will not permit fluids to penetrate.
  • a suitable foam plastic thermal insulation board is one made by The Celotex Corporation of Tampa, Florida under the designation Thermax Insulation Board. Typical thermal insulation board dimensions are 4 feet wide x 12 feet long x 1 1/2 inches thick although boards of different dimensions may just as well be used to implement this invention.
  • Both rigid and non-rigid insulating layers can be employed in the building structure of the invention.
  • the insulating material can be introduced in the form of loose fill, can be foamed in place, can be nailed, or otherwise installed by any conventional method.
  • Other insulating materials which can be used include surfaced semi-rigid blanket thermal insulation, surfaced rigid cellulosic fiber board, perlite mineral fiber, and foam/board composites of the above.
  • the thermal insulating layer of the invention can form part of a composite construction having an insulating core member and an exterior weatherproof covering member.
  • a separate weatherproof exterior covering such as the roll formed metal roof sheet 38 shown in Figure 1, can be employed. Exterior sheathing for the roof structure can be provided by any conventional weatherproof barrier used for this purpose.
  • FIG. 1 illustrates an advantageous method of securing the new insulation sheathing 37 and roof sheet 38 to the retrofitted roof structure in accordance with the present invention.
  • Insulation boards 37 are laid down so that their long edges run parallel to crests 17 of the existing roof sheet, and the edge portions 39 along th.e width of the boards are perpendicular to said crests, with all butted joints overtaped with 2 inch wide pressure sensitive vapor barrier tape. Where necessary, shanks 25 are shortened to prevent them from projecting above insulation boards 37 when the latter are set in place.
  • Roof sheet 38 is next applied over insulation sheathing 37 and secured in place by suitable fasteners. As seen in Figure 1, fasteners 40 can be placed so as to lock together sheet 38, sheathing 37 and securement strip 26.
  • fasteners 40 are driven through said composite into the underlying securement strip.
  • Other fastening means can, of course, be employed.
  • a single fastener can be driven through the entire retrofitted composite, including the securement strip, and into the existing corrugated roof sheet.
  • a roll formed aluminum roof sheet 38 is applied over insulation board 37 and secured at 8 inches on center laterally (perpendicular to crests 17) and 5 1/2 feet on center longitudinally (parallel to crests 17) to the retrofit securement plates 26 with self-drilling fasteners 40, each having a stainless steel washer, neoprene grommet and plastic cap. Flashing at the roof edges can be installed in a conventional manner. Where required for flashing securement, fasteners can be secured through top sheet 38 and insulation board 37 into the top center of the lapped roof corrugations.
  • the retrofitting securement strips of the invention provide a highly effective interfacial attachment system for securely linking together dissimilar roof sheets (existing/new). They provide a thin-profiled interface which permits a completely insulating thermal envelope to he installed over an existing roof and/or wall structure.
  • the securement strips are especially effective in providing an interfacial attachment substrate to existing corrugated cement asbestos roof and walls, utilizing existing panel hook bolts of the structure for attachment. No removal or loosening of the hook bolt is required.
  • shorter retrofit fasteners may be used, since they are not required to penetrate through the total old and new composites.
  • the strips furnish a high degree of lateral stiffness to wide pitch existing roofs.
  • the metal securement strips of the invention fill an urgent need for a low profile substrate to existing exterior roofs and walls of pre-engineered buildings (buildings with roll formed metal panel or corrugated cement asbestos exterior cover sheeting).
  • the substrate provides a lightweight but strong securement ground to receive a retrofit insulation board and retrofit cover sheet through fasteners securing the retrofit composite to the low profile substrate.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Building Environments (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP81101018A 1980-03-03 1981-02-13 Structure pour le montage ultérieur de l'extérieur ondulé d'un bâtiment Withdrawn EP0035148A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12651780A 1980-03-03 1980-03-03
US126517 1980-03-03

Publications (1)

Publication Number Publication Date
EP0035148A1 true EP0035148A1 (fr) 1981-09-09

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ID=22425255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101018A Withdrawn EP0035148A1 (fr) 1980-03-03 1981-02-13 Structure pour le montage ultérieur de l'extérieur ondulé d'un bâtiment

Country Status (4)

Country Link
EP (1) EP0035148A1 (fr)
JP (1) JPS56135659A (fr)
AU (1) AU6722081A (fr)
IE (1) IE810254L (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672780A (en) * 1984-09-04 1987-06-16 Lockwood David N Building panels
DE3903091A1 (de) * 1989-02-02 1990-08-09 Messerschmitt Boelkow Blohm Schaltungsanordnung fuer infrarot-bildsensoren
EP0683286A1 (fr) * 1994-05-04 1995-11-22 TECH-MARK s.r.l. Elément pour connecter une toiture fonctionnelle avec un recouvrement esthétique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU685801B2 (en) * 1993-06-29 1998-01-29 Stramit Corporation Pty Limited Roofing profile

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251250B (de) * 1964-06-29 1966-12-27 Franz Dipl Ing Diem Dachkonstruktion

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251250B (de) * 1964-06-29 1966-12-27 Franz Dipl Ing Diem Dachkonstruktion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672780A (en) * 1984-09-04 1987-06-16 Lockwood David N Building panels
DE3903091A1 (de) * 1989-02-02 1990-08-09 Messerschmitt Boelkow Blohm Schaltungsanordnung fuer infrarot-bildsensoren
EP0683286A1 (fr) * 1994-05-04 1995-11-22 TECH-MARK s.r.l. Elément pour connecter une toiture fonctionnelle avec un recouvrement esthétique

Also Published As

Publication number Publication date
IE810254L (en) 1981-09-03
JPS56135659A (en) 1981-10-23
AU6722081A (en) 1981-09-10

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19820816

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Inventor name: BERRY, JAMES A.

Inventor name: SHERMAN, MORTON