Solve the following question given below:
Question I: What is the maximum allowable deflection (in inches) of a platform plank 7'-0" long?
Question II: A 7'-0" platform plank of select structural spruce-pine-fir (south) is loaded by 50 psf. What is its maximum deflection? Check the plank for bending stress.
This is a physic question, reply as soon as possible. Thank you.