Supports – Brackets – Specially mounted or attached
Patent
1990-10-10
1993-10-05
Talbott, David L.
Supports
Brackets
Specially mounted or attached
182113, 256 1, 256 65, F16B 100
Patent
active
052497690
DESCRIPTION:
BRIEF SUMMARY
This invention relates to clamps for use in building structures and is particularly concerned with structures adapted to be carried by a building during or after completion of fabrication of the building. Most particularly the invention is concerned with a support for such structures.
During construction or maintenance operations on a building it is advantageous to erect a safety barrier near to the edge of a deck (including a roof) so that workers can be protected against falling from the deck or at least can be warned of the proximity of the edge of the deck.
At present many construction site accidents involve workers accidentally falling from the decks of buildings under construction. To overcome this problem there have been many proposals to erect a barrier around deck edges to restrain a worker or at least to clearly visually indicate to the worker the proximity of the deck edge. However, no such safety barriers have been simple to erect, secure and avoid the need to penetrate the deck.
One proposal is described in U.S. Pat. No. 3,880,405 in which a support post of the safety barrier is supported on a plate which is located over a raised deck roof profile and fastened through the decking. A problem with this arrangement is that the fastening is through a valley of the profiled deck so that water on the deck can seep through the openings for the fasteners through the deck, particularly after the safety barrier has been removed. In a proposed modification, where the deck profile has a raised seam, this may be used to secure the foot plate. For this purpose the plate is provided with a pair of opposed pointed shanks at least one of which is screwthreaded for adjustment to pinch the seam between the points. A disadvantage of this proposal is that the slightest loosening of the pinch by direct rotation of one or both shanks will release the plate from the deck. This is recognized in U.S. Pat. No. 3,880,405 and the plate may optionally be fastened through openings in the deck, with the aforementioned resultant disadvantage. It may also be difficult to sufficiently tighten the shanks.
In buildings under construction, formwork must be erected around, for example, a concrete slab to be poured. Sometimes the slab may not be completely poured in one operation so that temporary formwork needs to be erected at the position where the initially poured segment of the slab is to end. This can be difficult or inconvenient to erect, particularly during construction of multiple floor buildings where a concrete floor slab is to be poured on floor decking which is to become part of the concrete slab floor. The mounting of formwork can be inconvenient and can involve construction of locating and securing arrangements on site and this can be time consuming if special components have to be continually manufactured on site to enable erection of the formwork.
Furthermore, it is frequently necessary to temporarily or permanently mount a display sign to a building. For example, advertising signs are frequently required to be mounted to decking such as roof decking provided on top of a shop awning. Frequently erection of such a sign involves construction of a special mounting frame for each particular installation, and the fastening of such a sign to the decking usually involves penetration of the roof decking with consequent problems of sealing the points of penetration against water penetration and corrosion.
It is an object of the present invention to provide a support for a structure such as the aforementioned safety barrier, formwork or display adapted to be carried on a building which support is relatively simple to use, is secure and is usable in a variety of possible situations.
According to the present invention, there is provided a support for a structure adapted to be carried by a deck of a building during or after completion of fabrication of the building, such structure comprising a plurality of the supports, the support comprising a support element to which the structure may be mounted and clamping means comprising a
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Griek Cornelius J.
Mitchinson Anthony K.
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