Static structures (e.g. – buildings) – Inclined top cover – Rafter tie-in at horizontal-type support
Patent
1978-05-11
1980-04-01
Perham, Alfred C.
Static structures (e.g., buildings)
Inclined top cover
Rafter tie-in at horizontal-type support
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.
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