A stockroom floor carries a uniform load of p = 80 lb/ft2 over half the floor as shown i...

A stockroom floor carries a uniform load of p = 80 lb/ft² over half the floor as shown in Figure P12–12. The floor has opposite edges clamped and remaining edges and midspan simply supported. The dimensions are 10 ft by 20 ft. The floor thickness is 6 in. The floor is made of reinforced concrete with E = 3 × 10⁶ psi and v = 0:25. Determine the maximum deflection and maximum principal stress in the floor.