Apparatus and method for determining net section parameters of t

Details Apparatus and method for determining net section parameters of t Apparatus and method for determining net section parameters of t

1988-12-30

1990-07-31

Lall, Parshotam S.

Boots, shoes, and leggings

364508, 340665, 340668, 403 27, 73760, 73786, H04N 718

Patent

active

049454927

ABSTRACT:
Net section parameters of connector plates at selected truss joints are determined by representing each wood member as a corresponding two-dimensional polygon and the connector plate as a rectangle of predetermined dimensions corresponding to the actual dimensions of the plate. When the plate is positioned at a particular truss joint, the area of intersection between the plate rectangle and the polygon defines an intersection polygon. The intersection polygon is rotated and the Cartesian coordinate system of the intersection polygon is redefined so that a first axis thereof is aligned with a central major axis extending along a geometric center of a major surface of the particular wood member. The maximum and minimum coordinates of the intersection polygon along a second axis of the redefined coordinate system, which is perpendicular to the first axis thereof, are added together to determine the length of overlap of the connector plate along an axis perpendicular to the central major axis of the wood member, thereby defining the net section parameter of the corresponding wood member.

REFERENCES:
patent: 4366874 (1983-01-01), Pidoux et al.
patent: 4433581 (1984-02-01), Scott et al.
patent: 4550376 (1985-10-01), Maciesczak
patent: 4757461 (1988-07-01), Stohr et al.
patent: 4789947 (1988-12-01), Maciejczak

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