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JOIST GIRDER NOTES
(a) All Joist Girder dimensions shown are subject to change when required by the physical size of large Joist Girders. If changes
are necessary Vulcraft will so note on the placement plans.
(b) The standard connection for Joist Girders to columns is 13/16 inch slots for 3/4 inch bolts in girder bearings.
The girder
erection bolts are by others. If the specifying professional wishes to use the Joist Girder bearing to transmit horizontal
loads, the required amount of weld to connect the Joist Girder seat to the column should be specified. For additional
(c) Stabilizer plates between the bottom chord angles brace the Joist Girder against overturning during erection and also
(d) Joist Girder bottom chord struts do not require welding to the stabilizer plate unless required by design to transmit horizontal
forces. When welding is required, the amount of weld should be specified by the specifying professional. UNLESS
OTHERWISE SPECIFIED, BOTTOM CHORD STRUTS SHOULD NOT BE WELDED.
(e) Joists are connected to the girder by welding except that the joists at (or nearest) the column shall also be bolted (O.S.H.A.
Sec. 1910.12 Construction Standards Sec 1518.751).
(f) The l/r
y
of the bottom chord of the Joist Girder cannot exceed 240. For STANDARD Joist Girders, the specifying engineer
can use the "Joist Girder Bottom Chord Brace Chart" in conjunction with the "Design Guide Weight Table/Joist Girders, G
Series" to select the correct number of bottom chord braces. Joist Girders which must resist uplift, end moments, or axial
bottom chord forces may require additional braces.
JOIST GIRDER DETAIL (a)
BOTTOM CHORD BRACE