Wood roof truss construction

Details Wood roof truss construction Wood roof truss construction

1980-10-10

1983-07-19

Murtagh, John E.

Static structures (e.g., buildings)

Openwork; e.g., truss, trellis, grille, screen, frame, or...

Curvilinear or peaked truss

52225, 52640, 52642, E04B 132

Patent

active

043936377

ABSTRACT:
A wood roof truss construction comprising, in combination, a pair of redundant superpositioned load support systems, namely a tied-arch system and a wood bowstring truss system. The wood truss system comprises an arch, a web system depending from said arch and a horizontally oriented bottom bichord member secured to the web system and bridging the ends of the arch and anchored to said ends by a U-strap. A connecting assembly is coupled to the U-strap and to an elongate steel tension rod disposed between the two members forming the bottom bichord. Transverse spacers are provided along the length of the bichord comprising spacer sleeves, through-bolts and/or U-plates coupling the gusset plates or straps employed to anchor the web members to the bottom bichord said transverse members serving also to support the tension rod in the absence of being fixedly secured thereto.

REFERENCES:
patent: 1360509 (1920-11-01), Eleman
patent: 1973882 (1934-09-01), Pratt
patent: 2139363 (1938-12-01), Graham
patent: 2187009 (1940-01-01), Beattie
patent: 2525974 (1950-10-01), Taggart
patent: 2770846 (1956-11-01), Findleton
patent: 4275537 (1981-06-01), Pinson
Engineering in Timber by The Timber Engineering Company of Washington D.C.

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