AU592353B2 - Fire protective cladding - Google Patents

Description

J ZSb &G30 N FORM 10 COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION 7 9, 9' Class Int. Class

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#6 6~ 0 #46 #8O* 06 0* 0 *0 6# 0 ~t 6 Q PH1531 18 July 1985 Accepted: Published: LLODGED AT SU.OfCE J JU L 1fIN 4 Priority: Related Art: Name of Applicant: Address of Applicant: Actual Inventor: Address for Service: L A FAZZINI PTY LTD 23-25 Wentworth Street, Greenacre 2190, New South Wales, Australia A FAZZINI Spruson Ferguson, Patent Attorneys, Level 33 St Martins Tower, 31 Market Street, Sydney, New Scuth Wales, 2000, Australia

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4 Complete Specification for the invention entitled: FIRE eROTECTIVE CLADDING The tollowing statement is ai full description of this invention, iiicluding the best method of performing it known to ire/us F PATNT OFFICE A.C.7, SUD.QrFICE 0 8' 643 jCollector of Public Moneys SM/206d 2 This invention relates to cladding and more particularly, though not exclusively to fire protective cladding of the sort used to protect building structures such as R.S.J. beams.

Beams used in building structures are usually disposed horizontally or vertically and are often produced from R.S.J. iron beams. It is often required that these be protected with a fire proof coating. Known methods of providing this fire proof coating include the spraying of concrete-base material onto the beam in a sufficient thickness to provide the desired fire proofing. Also known in the production of elongate s',bs of generally rectangular cross-section which are placed to surround the beams to be )rotected and then attached using various attachments such as brackets or nogging. The rectangular slabs are convenient in their own way although

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they require extra material to produce the attaching mechanisms and are It time-consuming to put into place. Whep the beam to be protected is oriented horizcntally it is particularly time consuming to apply the conventional fire-proofing.

It is the object of the present invention to overcome or substantially anmeliorate the above disadvantages.

There is disclosed herein a cladding component adapted for substantially self supporting cooperation with a flanged structural member, the cladding component including a generally L-shaped cross sectioned main portion, including side and lower portions, forming generally inner and outer surfaces, the inner surface including support means attached to, or formed as part of, said main portion, and extending along the side portion to a line parallel to the lower portion so as to form a ledge distanced from the lower portion allowing the support means to rest upon the flanged structure when part thereof resides within a space between the support means and the lower portion.

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I I -portion in its elongate direction and distanced from thc S:;-n-nner surface.

Preferably, the material of the cladding component is fire resistant. It is, however, envisaged that the present invention has broader application and that non-fire protective material may be used in components intended, merely for example, for decorative, use.

Preferably the cladding component includes reinforced Smesh. In a preferred embodiment the reinforced mesh is generally L-shaped in cross-section and runs internally longitudinally of the cladding component.

Preferably each end and exposed edge of the cladding I V component will include spaced-apart tie wires which may be S"r used to tie adjacent components together and/or improve anchoring of the component to nearby structural members.

:i Preferably each end and/or edge of the cladding component will include a chamfer which can be filled with a Sspreadable, setting, filler material once all of the cladding components are securely in place.

By way of example only, one broad form uf the present invention will now be described with reference to the accompanying drawings in which: Fig. 1 is a perspective view of a cladding component in accordance with the invention protecting an R.S.J. beam; and Fig. 2 is an elevation of an alternative embodiment.

The fire protection is provided by a plurality of individual components 1 which combine to completely enclose in this case the U.S.J. beam 7. Each component 1 is of a ALl generally L-shaped cross-section. Running transversely and longitudinally within the inner surface of each component 1 -o SM/5T 3 I i 1

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is a groove 8. The groove 8 is sized and located in the component 1 so that at least a portion of a flange of the R.S.J. beam 7 may reside therein, Along the top edge of the component 1 oan bcNplaced lightweight channel sections 6 which are fixed to the upper flange of the R.S.J. beam 7 or to another conveniently anchored structure. Part of the upper edge of the component 1 .slipped into the channel section 6 so that two of the components I can be held side by side, on opposing sides of the R.S.J, beam 7 in a secure manner by intertwining t4o tie wire 5 along the length of S their bases. The tie wire 5 can be replaced by a suitable mechanical lock such as a spring steel clip.

S C1 Each of the components 1 is reinforced by a mesh 4.

C The mesh 4 can be galvanised steel wire, glass fibre, or other suitable known reinforcing material. The nature of the material used in forming the component 1 along with the reinforcing mesh 4 provides sufficient strength so that the weight of the cladding is taken on the flange of the R.S.J.

beam 7 which lies internally of the groove 8. Thus the beam is surrounded by cladding which is quickly put into place and held rigidly in place. Any length of beam can be so clad by using the appropriate number of pairs of cladding components 1 all arranged in end to end close fitting relationship. The end to end joins 2 and the longitudinal base joins 3 are filled in with a suitable setting caulking compound. Thus a flat attractive finish is obtained.

In the alternative embodiment shown in Fig. 2 there is a. variation in the construction of the component 1. As is shown in Fig. 2 the vertical side portion of component 1 is 'j jrectangular in cross section without the integral supporting SSM/ST 4

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rr f CT I I portion 12 of the first embodiment shown in Fig. 1. Instead, there is attached to the side portion of the component 1 a plurality of triangular shaped sheet metal components 13 attached by screws 11 thereto. The sheet steel components 13 run in an array, substantially parallel to one another, along the inner surface of the component 1 extending downwardly an equal distance so as to form the space or groove 8. As is the case in the embodiment of Fig. 1, the weight of the component 1 is substantially entirely taken by resting the lower edge of the sheet steel component 13 on the top of the lower flange of the R.S.J. beam. Also shown in Fig. 2 are the light gauge steel channel sections 6 attached to a sealing component 14 by nails 9, So as to complete the assembly in a visually attractive manner caulking 15 can be added at the join of the components 1 to the sealing structure 14. Also, to ensure maximum rigidity screws 10 can be used to rigidly fix the components 1 to the channel sections 6.

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Claims (9)

1. A cladding component adapted for substantially self supporting cooperation with a flanged structural member, the cladding component including a generally L-shaped cross sectioned main portion, including side and lower portions, forming generally inner and outer surfaces, the inner surface including support means attached to, or formred as part of, said main portion, and extending along the side portion to a line parallel to the lower portion so as to form a ledge distanced from the lower portion allowing the support means to rest upon the flanged structure when part thereof resides within a space between the support means and the lower portion.

2. A cladding component as defined in claim 1 whcrein the support means is in the form of a plurality of planar rigid members attached parallel to one another to the inner surface of the side portion and each extending to a common straight line running longitudinally of the component.

3. A component as defined in claim 2 wherein each rigid member is of sheet metal and generally triangular in shape.

4. A component as defined in claim 1 wherein the support means is a strip of material integral with the side portion and of constant generally triangular cross section.

5. A component as defined in any pi'nceding claim wherein the main portion is reinforced with a reinforcing mesh.

6. A component as defined in any preceding claim wherein longitudinal edges of the main-portion include space apart tie wires extending therefrom.

7. A flanged structural member and its cladding in the form of at least two components, each according to any preceding claim, at least one said component being on each side of the member and symmetrically opposing another said component and the weight of each component being supported by a flango of the structural meber via it supporting device.

8. A flanged structural member and its cladding as defined in claim 7 wherein longitudinal edges of the main-portion of symmetrically opposing components are wired closely together and joined by sealing material. 4s4 a 4 *4 4 4* 44 4 44 4.4 4 444 41 *4O 4 *i 4 ft

9. reference 4. 44 44 4 ft 4* 4* 4 44 ft44* 4444 44444*E 4 .4 4 4* 4444 *4L 4* *4 44* t r ii -7- 9. A cladding component being substantially described herein with reference to the drawings. DATED this SEVENTEENTH day of OCTOBER 1989 L A Fazzini Pty Ltd Patent Attorneys for the Applicant SPRUSON FERGUSON s r t *l a