ARE Study Review

For EITHER steel or wood beams, a question that asks for the allowable deflection limit (maximum) for live loads only requires which of the following equations? A. L/240 B. L/360 C. ∆ = 5wl⁴ / 384EI D. ∆ = 5Wl³ / 384EI Answer B. L/360 or span in inches divided by 360. ARE 4.0 exam prep: SS Note on calculations: From posted discussions on AREforum , memorization of most equations is not advised. However, even when the equation may be available in in-exam reference, selection of the appropriate equation requires correct identification.

If deflection is to be limited to 1/240 of the span for total deflection, which includes both dead and live loads, what is the maximum allowable deflection for a 16 ft steel beam? Answer ∆ = (16 feet x 12 inch/ft) ÷ 240 = 0.80 inch ARE 4.0 exam prep: SS

In a design using wood beams and joists, concern for preventing bouncy floors would suggest checking for: A. axial load B. deflection C. torsion D. axial compression Answer B. deflection ARE 4.0 exam prep: SS