Apparatus and method for selecting and positioning truss connect

Details Apparatus and method for selecting and positioning truss connect Apparatus and method for selecting and positioning truss connect

1988-12-30

1990-10-23

Lall, Parshotam S.

Boots, shoes, and leggings

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

Patent

active

049657402

ABSTRACT:
Connector plates are positioned at selected truss joints by representing each wood member of the truss as a corresponding two-dimensional polygon. Each side of the polygon is defined by a corresponding member vector having starting and ending points relative to a predetermined reference point. A particular member vector is selected as a boundary vector for each joint boundary, beyond which the connector plate cannot extend. The connector plate is represented as a rectangle of predetermined dimensions corresponding to the actual plate dimensions. Each side of the rectangle is defined by a corresponding plate vector having starting and ending points relative to the reference point. The rectangle is moved within the prescribed joint boundaries by eliminating the points of intersection between the boundary vectors and the plate vectors. The vectors are used to determine truss joint parameters, such as area of overlap of the connector plate on each of the truss members, shear, tension and combined shear-tension stresses, and eccentricity forces acting on the truss members.

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

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