A 2000-lb wheel load is to be supported by aggregate over soil that can withstand a pressure of 1000 lb/sq ft. What depth of aggregate is needed if θ = 40°? why would you use cos0 and why would you square 2 instead of 2000?

One shaft is in torsion as shown below. If the magnitude of shear stress at point A is 245.3 MPa, calculate the magnitude of the shear stress at point B on the same cross-section as point A:  ___ MPa. Calculate your answer to one decimal place.

1) A box beam has the following dimensions: h = 500 mm, b = 180 mm, and t = 22 mm. If the yield stress is 270 MPa, what is the yield moment? (Express your answer in kN-m, up to 1 decimal place)   2) A box beam has the following dimensions: h = 500 mm, b = 180 mm, and t = 22 mm. If the yield stress is 270 MPa, what is the shape factor? (Express your answer up to 1 decimal place)

A 2000-lb wheel load is to be supported by aggregate over soil that can withstand a pressure of 1000 lb/sq ft. What depth of aggregate is needed if θ = 40°?