A tempered glass panel is 5 ft by 9 ft. The supplier weight is 6.5 lb per square foot. What is the panel weight before hardware?
Correct Answer
B) 292.5 lb
Panel area is 5 x 9 = 45 sf. Weight is 45 x 6.5 = 292.5 lb. Other choices use the wrong panel area or a different pounds-per-square-foot value.
Why This Is the Correct Answer
Panel area is 5 x 9 = 45 sf. Weight is 45 x 6.5 = 292.5 lb. Other choices use the wrong panel area or a different pounds-per-square-foot value.
Why the Other Options Are Wrong
Option A: Make 260 lb the answer for glazing panel weight
glazing panel weight, choice a: 260 lb backs into 40 when divided by 6.5; the accepted setup gives 45 on that same base.
Option C: Apply 315 lb to the glazing panel weight condition
glazing panel weight, choice c: 315 lb backs into 35 when divided by 9; the accepted setup gives 32.5 on that same base.
Option D: Apply 360 lb to the glazing panel weight condition
glazing panel weight, choice d: 360 lb backs into 40 when divided by 9; the accepted setup gives 32.5 on that same base.
Memory Technique
Keep a redline beside glazing panel weight: if one number is skipped, the option drifts away from 292.5 lb.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use the index entry or section for "Glazing panel weight calculation" to confirm that Panel area is 5 x 9 = 45 sf.
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