SJI Technical Digest No. 12

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Full Description

Evaluation and modification of joists is often required due to the addition of rooftop units, underhung conveyors, loading increases, field deviations, or otherchanges not contemplated in the original specification for the joists or JoistGirders. The purpose of this digest is to present procedures, and to suggestdetails for the modification or strengthening of open web steel joists and JoistGirders. Both open web steel joists and Joist Girders will be referred to as joistsin this digest.