Roof structure

Static structures (e.g. – buildings) – Inclined top cover – Rafter tie-in at horizontal-type support

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Details

52262, 52539, 52580, 52780, E04B 704

Patent

active

041954548

ABSTRACT:
A roof structure of the type having a plurality of wooden beams whose sides are provided with mortices for receiving end edges of roofing panels. The invention improves the strength of the structure by employing a generally zig-zag or corrugated cross-section by arranging the mortices such that at least a major portion of each mortice extends at an acute angle with respect to the elongation of the beam, which generally corresponds to the direction of wood grain. The invention thus provides the advance of an increased strength of the structure as compared with prior art which is typical by the mortices being generally straight and/or parallel with the elongation of the wood grain which normally corresponds to the elongation of the beam.

REFERENCES:
patent: 143352 (1873-09-01), Johnson et al.
patent: 176446 (1876-04-01), Shepard
patent: 451733 (1891-05-01), Leonard
patent: 602194 (1898-04-01), Pease
patent: 1817619 (1931-08-01), Greenwald
patent: 2264546 (1941-12-01), Ochs
patent: 2397388 (1946-03-01), Troedsson
patent: 3256653 (1966-06-01), Huff
patent: 3277621 (1966-10-01), Merdich
patent: 3464168 (1969-09-01), Russell et al.
patent: 3648420 (1972-03-01), Nelson
patent: 3975876 (1976-08-01), Sauder

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