Design a round spiral column to support an axial dead load of 950 kN and an axial live load of 1210 kN. Use fy = 276 MPa and f’c = 27.6 MPa. Assume 2% steel ratio and use 28 mm main bars and 10 mm spiral. Assume a steel concrete cover based on NSCP 2015

A rectangular concrete beam has a width of 300mm and an effective depth of 550mm. The beam issimply supported over a span of 6m and is used to carry a uniform dead load of 25 kN/m and a uniformlive load of 40 kN/m. Assume fc’ = 21 MPa and fy = 312 MPa. Compression reinforcement, ifnecessary, shall be placed at a depth 80 mm from the outermost compression concrete. Used loadcombination of 1.4DL + 1.7LL.   4. Determine the required compression steel area in square millimeters.5. Determine the required number of 25-mm compression bars.

A reinforced concrete beam that is 375 mm wide and 500mm deep must resist a service live load moment of 250 kN-m and a service dead load moment of 150 kN-m. Use f'c-21 MPa and fy=415 MPa. The effective concrete cover is 65mm (to the centroid of reinforcements). 1. Determine the area of compression steel reinforcement (If required. Answer O if not) in mm² 2. Determine the minimum number of 25 mm diameter bars to be provided to satisfy the demand ultimate moment 3. Determine the maximum number of 25 mm diameter bars to be provided to have a tension controlled section Answer 1: 2403.21 correct answer: Answer 2: 9.00 Answer 3: 8.00

Determine end reaction for Beam 1 (B-1). L1 L2 B-1 L2 L2 L2 • L1 = 20 ft • L2 = 6 ft Live load = 50 psf • 4" Thick concrete slab (density = 150 pcf) • 5/8" Thick terrazzo (12 Ib/ft2/in) • Beam weight = 30 lb/ft Girder weight = 22 lb/ft Please round to the nearest one. One end reaction for B-1 = Ibs MacBook Air 吕0 F3 F7 F4 F5 F2 & * @ 7 8. 2 3 W E R T Y