The beam of cross section shown is on a simple span of 20 ft and carries service loads of 1.5 kips/ft dead load (includes beam weight) and 1.0 kip/ft live load. Use f′ c = 3000 psi and fy = 60,000 psi.
a. Compute the immediate deflection due to dead load and live load.
b. Compute the long-term deflection due to the dead load. Assume the time period for sustained loads to be in excess of 5 years.