TM 5-809-3/NAVFAC DM-2.9/AFM 88-3, Chap. 3
9-5. Design procedures.
a. Axial compressive stress. In the design of masonry columns and pilasters, the compressive stress, fa,
is determined as follows:
P = The applied axial load, lbs.
Ae = The effective transformed area of the column (or pilaster) based on actual cross sectional