A normal weight, concrete Beam has the following properties: b = 15", d = 21", h = 24", f'c = 5000 psi. What is the highest shear the beam could handle on the list below without requiring stirrups for strength? 34.5 kips 15.5 kips 31.1 kips 17.7 kips

For the bean shown below, the concrete strength is 5000 psi and the yield strength is 60,000 psi. For the midspan section shown, check if steel yields and compute ØM, and compare it with M. WD = 1.2 kips/ft plus weight of beam WL = 1.5 kips/ft %3D 20.5 in 23 in 3 no. 9 bars 18 ft 11 in.

1. Determine the area of reinforcing steel required for the T beam shown if concrete compressive strength is 28 MPa and steel yield strength = 420 MPa and modulus of elasticity of steel = 200,000 MPa. Check tensile strain to see that it is 0.005 effective width= 1600 mm 300 mm M₂=475 kN m 100 mm 600 mm 500 mm

Three high-strength concrete poles, with an effective cross- sectional area of 40, 000m * m ^ 2 and a length of 2 m, support a stiff steel plate. The center post is 1 mm shorter than the others before the load P is applied. If the concrete's allowed compressive stress is 20 MPa, calculate the maximum load that can be carried. E = 30GPa for concrete

Calculate the uniform load w (in addition to the beam weight) that will cause the section shown to begin to crack if used as a 28-ft simply supported beam. Use normal weight concrete with L=4000 psi. f = 60,000 psi, E₁=29,000 ksi, and the reinforced concrete weight = 150 lb/ft³. 4 in. 28 ft 4 in. 22 in. 30 in. 2 in. 2 in. 3 #9 ● ||—12 in—-|

Problem No. 3 A beam 200x45Omm is reinforced by 2-32mm diameter rebar. Assume cc=50mm, stirrups=10mm, fc'=21Mpa and fy=415Mpa. Calculate the following. 17. Calculate the strain of the steel reinforcement 0.00182 O 0.00201 O 0.00224 0.00391 O 0.00577

2.9 A beam cross section is a rectangle 16"x18". Calculate its section modulus and maximum bending stress for a bending moment of M = 40 ft-kips. Concrete maximum tension strength is 360 psi. Determine if this beam would crack under the indicated bending moment.

Using the stress block, determine the ultimate moment of resistance of the section shown in Figure 2 and check whether the steei provided satisfies the bending moment due to the loads on the beam. Characteristic compressive strength of concrete, fck= 25 N/mm² Characteristic tensile strength of steel, fyk = 500 N/mm2 Clear cover to main steel as 20 mm. Ultimate Design Load =13 kN/m 2 402 mm 370 mm 2 1470 mm 9 m 230 mm Figure 2

A RC beam of cross section 220 × 460 mm is subjected to following forces: Factored shear force = 30 kN Factored bending moment = 35 kNm Factored torsional moment = 5 kNm What should be the minimum area of tension steel provided such that there is no need to provide torsional reinforcement. Use M20 grade concrete and Fe415 grade steel. Use the following data for M20 grade concrete. 100 As 0.50 0.75 1.00 1.25 1.50 bd Design shear stress (N/mm²) 0.48 0.56 0.62 0.67 0.72

Give full explanation Awall form 14 ft high is filled with 160 lb per cu ft concrete at a tem perature of 70°F. The concrete is Type I without a retarder. Concrete will be placed with normal internal vibration to a depth of less than 4 ft. The rate of placement is 5 ft per hr. From Table 1, the value of Cw is 1.1 and from Table 2 the value of Cc is 1.0. The rate of placement is less than 7 ft per hr and the place ment height does not exceed 14 ft so calculate the lateral pressure by using appropriate formula.