Fluid Mechanics Density, Force, and Moment

A firefighting standpipe for a telecommunications facility with a constant diameter D = 4 inches
is designed to provide a flowrate Q = 2,600 gpm. Since the flow in the pipe changes direction
twice, there are forces that develop at points A and B. Assuming the density of water is = 1.94
slugs/ft3:
a) Calculate the x and y components of the forces at points A and B.
b) Calculate the total moment that develops at the bolted base of the standpipe C