Here's another one, what is the recommended structural design for an array of quantity 12 of 45-degree mounted 3'x3' solar panels using treated lumber in zone-4b (frost line about 75") taking into consideration snow and wind loads (90mph).

Brunswick

What is the maximum deflection of a floor with 115lb/sqft distributed load with 2"x12" joists 12-ft span 12" OC, attached to 1.5 of 2"x12" 8-ft span beams on either end made with non-treated southern yellow pine?

bitcoin

Anyone interesting or have question  about civil engineering, post 👇🏻.  For example how to calculate cantilever beam bending stress🤔