Civil Engineering Materials #$10\mathrm{.}22$

A wood specimen was subjected to bending until failure by applying a load in the middle of its span. The specimen has a cross section of $($actual dimensions$)$ and a span of $14in.$ between the simple supports. The load and the deflection in the middle of the span were recorded as shown in Table P$10\mathrm{.}22.$

Using a computer spreadsheet program, plot the load$-$deflection relationship.

Plot the proportional limit on the graph.

Calculate the modulus of rupture $($flexure strength$).$