A 6-m simply supported reinforced concrete rectangular beam is 250 mm wide. The total depth is 400 mm and its effective depth is 340 mm. It is reinforced for tension only with 4-28mm diameter bars. It carries a total dead load of 21.6 kN/m including its weight. Fy = 350 MPa and f’c = 20.7 MPa.   1. Compute the distance of the neutral axis from the top most fiber.  a. 195.98 mm b. 230.56 mm c. 186.01 mm d. 218.84 mm

The beam is subjected to a service dead load of 2.5k/ft for the entire length and a service live load of 20 kips at 4 ft from left end. The self weight of the beam b = 12in h=24 in has to be added to the dead load for the calculations. How much is the reaction for the design load at point A and paint B?

5 m T Į 2.5 m 10 kN B A с D 10 m For the portal frame shown in the above figure, the final end moments are: 'AB' - 15 kN.m, MBA=10 kN.m, McD = 20 kN.m, The end moment at Moc will be CD DC