Spot footing is 22. Strip footing is 15'. Roof overhang is 2. Soils are Sand. Roof loads are 30lbs/sf dead load (tile roof) and live load (snow). Wall loads are 400lbs/ft dead load.

What are the roof and wall loads for the given structure?

a. 30lbs/sf dead load for roof and 400lbs/ft dead load for walls
b. 30lbs/sf dead load and 30lbs/sf live load for roof, 400lbs/ft dead load for walls
c. 22lbs/sf dead load for roof and 15' live load for walls
d. 2lbs/sf dead load for roof and 400lbs/ft live load for walls