For stairs spanning l metres longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area

[Srinivasan]

For stairs spanning l metres longitudinally between supports at the bottom and top of a flight
carrying a load w per unit horizontal area, the maximum bending moment per metre width, is

(A) wl²/4

(B) wl²/8

(C) wl²/12

(D) wl²/16

The correct Answer Is
(D) wl²/16