Steps for analyzing timber beams.

Determine the section properties $($Table $1$B$.)$

Determine material properties $($Table $4A,4B$ or $4D.)$

Find the adjustment factors for the material properties $($Table $4\mathrm{.}3\mathrm{.}1$ and $4A,4B$ or $4D.)$

Apply the adjustment factors to material properties and obtain allowable bending and shear stress and deflection.

Calculate the actual bending and shear stress and deflection.

Make comparisons between the actual and allowable values.

Write a summary of your results.

Given:

Pressure on platform floor $=275$ psf

$L=8,$

Beam spacing $($tributary width$),s=20"$

Materials:

$2$X$8$ Southern pine dense structural grade