This calculator checks a uniformly loaded beam resting over 2
supports, overhanging one of the supports. Load is entered per foot of
beam. M1 is the bending moment at midspan between supports. M2 is the
bending moment over the post adjacent to the overhang. D1 is the maximum
deflection midspan between supports. D2 is the deflection on the outboard
end of the overhang. A negative deflection is an upward deflection of the
end. R1 and R2 are the loads on each support, these should be used to
check for crushing of the beam to post connection and the post dimensions.