Table 1: Typical shape factors.

Theory Shape Factor Comment
(1) (2) (3)
Broms [6] 3.0 Constant and independent of L/B and ϕ
Petrasovits and Award [7] 3.7 Constant and independent of L/B and ϕ
Meyerhof et al. [8] 1 to 10 Variable which is a function of L/B and ϕ