Structural beam square

Details Structural beam square Structural beam square

1981-10-27

1983-07-19

Little, Willis

Geometrical instruments

Straightedge type

Plural straightedges nonadjustably fixed at right angles

33 44, 33158, 33143R, G01B 330

Patent

active

043936008

ABSTRACT:
A structural beam square for laying out the web of a structural steel beam, or the like, is disclosed which includes a pair of arms which extend at right angles to each other. The arms have a T-shaped cross section and include coplanar stem members and flanges which extend along the inner edges of the stem members. The flanges support the square on the web of a beam with the stem portions at a raised position above the web, and above the fillet at the intersection of the beam web and beam flange. Gauge members are releasably secured to one arm of the square, which gauge members include gauge plates which are of the same height as the arm flanges. With one arm of the square abutting the beam flange, a line may be scribed across the web along the flange of the other arm. The square is moved along the web, and cross marks are scribed on the web along the gauge plates of the gauge members secured to said other square arm.

REFERENCES:
patent: 858791 (1907-07-01), Breul
patent: 897987 (1908-09-01), Mezger
patent: 1032594 (1912-07-01), Ferguson et al.
patent: 3325903 (1967-06-01), Zurlinden
patent: 4008522 (1977-02-01), Anderson

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