Arectangular beam of width b = 15 in., effective depth d = 20.5 in., and total depth h = 23 in. spans 18.5 ft between simple supports. it will carry a com-puted dead load of 1.08 kipsyft including self-weight, plus a service live load of 2.29 kipsyft. reinforcement consists of four evenly spaced no. 7 (no. 22) bars in one row. the clear cover on the sides is 2 in. material strengths are f y = 60,000 psi and