Static structures (e.g. – buildings) – Processes – Requiring soil work
Patent
1986-07-02
1988-06-07
Friedman, Carl D.
Static structures (e.g., buildings)
Processes
Requiring soil work
52221, 52232, 52577, 264 31, 285 64, E04B 548
Patent
active
047487879
ABSTRACT:
A pipe flange fire-proofing kit and process for forming a cast-in fire-stop coupling from normal pipe (22) includes a flange member (10) which is separate from the normal pipe, annularly-shaped top and bottom spacer collars (12 and 14), and an annularly-shaped fire barrier collar (16). Each of these members is slid onto a pipe stub (24) cut from a normal pipe with the top spacer collar being at a top end thereof, the bottom spacer collar being at a bottom end thereof, the fire-barrier collar of intumescent material being immediately adjacent the bottom spacer collar, and the flange member being between the fire barrier collar and the top spacer collar. The flange member is adhered to the pipe stub by an adhesive. The stub is attached to a concrete form wall (44,54) onto which concrete (42,52) to form a barrier is poured, with its bottom end and the bottom spacer being immediately adjacent the form wall so that upon curing of the concrete the top and bottom spacer collars can be removed so that female couplings can be attached to top and bottom ends of the pipe stub with the fire-barrier collar being open to air from the bottom side of the barrier. The pipe stub is attached to the form walls either by attaching members (50) extending from the flange member to the form wall or by a compression column extending from the form wall through the pipe stub to the top end of the pipe stub.
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Friedman Carl D.
Safavi Michael
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