Static structures (e.g. – buildings) – With component having discrete prestressing means – Beam – girder – or truss construction
Patent
1991-09-25
1993-06-15
Friedman, Carl D.
Static structures (e.g., buildings)
With component having discrete prestressing means
Beam, girder, or truss construction
52644, 52693, E04C 310, E04C 330
Patent
active
052188019
ABSTRACT:
A roof truss and decking system having trusses constructed with multiple truss blocks (8) stacked end to end with crush plates (14) in between. Keystones (16) are placed at the apex of the trusses or the crush plates (14) wedge shaped forming the trusses into arches. Truss blocks (8), keystones (16) and crush plates (14) are compressed together and strengthened with wire ropes (20). Wire ropes (20) run through wire rope receiving channels (30) in the truss blocks (8), through the curved wire rope receiving channels (46) in the keystones (16), and through wire rope slots (34) in the crush plates (14). Tensions of the wire ropes (20) are transmitted to the feet of the trusses at the tie plates (12). Tiebeam wire ropes (21) are added to each truss from the tie plate (12) on one foot to the tie plate (12) on the other foot preventing the truss' feet from spreading. The trusses are spaced apart and the spaced between is covered with spacer plates (10) resting in grooves (26) at the top of the truss blocks (8). And at the keystone (16) the spaces is covered with half spacer plates (11) resting in grooves (47) at the top of the keystone (16). Each truss rests upon the tie blocks (18) that rest upon the walls (24).
REFERENCES:
patent: 2874812 (1959-02-01), Clevett, Jr.
patent: 3918222 (1975-11-01), Bahramian
patent: 3922823 (1975-12-01), King
patent: 4187652 (1980-02-01), Bobrovnikov
patent: 4275537 (1981-06-01), Pinson
patent: 4294051 (1981-10-01), Hughes
Friedman Carl D.
Marnock Marvin J.
Wood Wynn E.
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