Civil Engineering Materials #$10\mathrm{.}20$

A center$-$point bending test was performed on a wood lumber according to ASTM D$198$ procedure with a span of $4ft$ and the $4in.$ side is positioned vertically. If the maximum load was $240$ kips and the corresponding deflection at the mid$-$span was $2\mathrm{.}4$ in$.,$ calculate the

modulus of rupture and the apparent modulus of elasticity.