2. Design of reinforcing for singly-reinforced concrete beams. Design a rectangularreinforced concrete beam to resist a total design moment, Mu of 140k-ft (This includesthe moment due to self-weight of beam). Architectural considerations require that thewidth (b) be 12in. and the overall depth(h) be 18in. and clear cover is 1.5in. Usef'c=3000psi and fy=60,000 psi. Sketch your design.

Answered: 2. Design of reinforcing for…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with 4-20-mm-diameter bars and at the top with 2-16-mm bars. bottom is 70 mm. Use concrete strength f'c = 21 MPa and steel yield strength fy = 345 MPa for 20-mm bars and fy = 230 MPa for 16-mm bars. Determine the design moment capacity in kN-m of the beam Concrete cover to bar centroid at the top is 80 mm and at the in negative bending. Write the answer in 2 decimal places only.
I need the answer to the question in reinforced concrete
Assume a concrete cover or 40mm, 10mm stirrups and clear distance between layers of 25mm. For Problem 9 and 10, determine the concrete and steel stresses at the fixed Support C 1.6P (6 Section at C Wo 28 kN/m W- 11 kN/m Pa 112 kN Pu = 52 kN 3.3m 1.5m 3.9m 8-36mmo 4.6m f- 25 MPa Grade 40 rebars d' 75mm A d 585 mm 4-36mm b-300mm
Pb- DCS.
Reinforce Concrete Design Determine the design moment capacity of the reinforced concrete beam shown inFigure 1(a) if it is reinforced with 4-28-mm diameter in tension and 2- 16-mmdiameter in compression. Use f’c = 21 MPa, fy = 276 MPa and effective cover of 50 mm for top and bottom bars.Assume the load W to be ultimate. Neglect weight of beam.
3
1. A rectangular beam has b = 300mm, d = 500mm, As = 6 – 32mm diameter bars, fc' = 27.6 MPa, fy = 414 MPa. Calculate: a) depth of compression block, "a" b) fs c) + d) Mu
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
"D.35. Compute the ultimate strength capacity of the positive moment beam design below. f'c= 25.8 MPa, fy= 506.8 MPa, bf= 710 mm, t= 90 mm, hw= 470 mm, bw = 440 mm ds= 10 mm, ct- 30 mm, cb = 35 mm. Steel bar details: compression side at top (single layer): 4- 16 mm dia. , tension side (double- layered): upper layer is 4 - 28 mm dia. and lower layer is 5 - 28 mm dia." Use the editor to format your answer br ... Ct Bar diameters and positioning in the figure given are just representations. Refer to the problem statement for the ds hw number of bars and bar diameters to use in your computation. 25 mm Cb bw
A 15 x 25 in. column is reinforced with four No. 9 (No. 29) bars, one in each corner as shown in Figure (a). The concrete cylinder strength is f. = 4000 psi and the steel yield strength is 60000 psi. Determine the axial load strength for zero eccentricity without subtraction of the concrete displaced by the steel, as well as with subtraction of the concrete displaced by the steel. E=0.003, E,-29000. Imperial Metric bar Linear Mass Density Nominal diameter Nominal area 25" bar size size (soft) Ib (in) (mm) (in') (mm") 2.5" -2.5" 0.250 - % 6.35 0.05 32 0.375 = % 9.53 0.11 71 0.500 = 4 12.7 0.20 129 0.625 = % 15.9 0.31 200 0.750 = % 19.1 0.44 284 0.875 = % 222 0.60 387 1.000 = % 25.4 0.79 510 1.126 - % 28.7 1.00 645 1.270- 1% 32.3 1.27 819 No.6 0.167 0.249 3 No. 10 0.376 0.560 #4 No. 13 0.668 0.994 Pn #5 No. 16 1.043 1.552 15" No. 19 1.502 2.235 #7 No.22 2.044 3.042 #8 No 25 2 670 3.973 As No 29 3.400 5.060 A's #10 No 32 4.303 6.404 e varies #11 No.36 5.313 7.907 1.410- 35.8 1.56 1.006…
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Design Problem 5 Determine the spacing of 10 mm U Stirrups required for the beam of design problem 4.0 at Ls = 1.10 m from the support if fpu is 1,724 MPa for the prestressing steel and fy for the stirrups is 276 MPa. Aps = 945.16 mm² (Use NSCP Equation, Table 409.6.3.3e)

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