General Contractor Practice Exam

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How should scissor trusses be stored for structural integrity?

With supports laid down every 4-5 feet
With supports laid down every 8-10 feet
With no supports needed
With supports every 12-15 feet

The correct answer is: With supports laid down every 8-10 feet

Storing scissor trusses correctly is vital for maintaining their structural integrity and preventing damage during transportation or while on-site. The correct method involves placing supports every 8-10 feet. This spacing ensures that the trusses do not sag or bow, which can lead to warping or structural compromise over time. Using supports at this interval maintains even weight distribution and prevents undue stress on any one section of the truss. This is particularly important since trusses are designed to carry loads and withstand tension and compression forces; improper storage can introduce new and potentially damaging stresses that the truss wasn't designed to handle. Other options suggest different spacing for support, either too close or too far apart. Placing supports every 4-5 feet may be overly cautious and unnecessarily wasteful, while not providing any support at all certainly runs the risk of damaging the trusses. Similarly, spacing supports every 12-15 feet increases the risk of structural failure due to insufficient support. Therefore, the 8-10 feet spacing strikes the ideal balance between safety and practicality.