Q-A rectangular 230 mm x 350 mm (effective depth) beam is given. The factored shear force acting at a section is 80 kN. If the permissible shear stress in concrete is 0-25 MPa, what is the design shear force.
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- 4. A reinforced concrete T-beam has the following properties: Flange width, bf = 1,350 mm Width of web, bw = 300 mm Gross depth, h = 500 mm Effective depth, d = 420 mm Concrete strength, f’c = 21 MPa Steel strength, fy = 415 MPa a. If the beam is reinforced with 3-20-mm-diameter bars at the bottom (in single layer), determine the resulting depth of rectangular stress block at ultimate stage. = ____ mm (2 decimal places) b. What is the condition of failure? = ____ (Balanced, Tension controlled, Compression controlled, Transition) c. Calculate the design moment strength of a typical interior beam. = ____ kN⋅m (whole number)Topic: Singly Reinforced Concrete A simply supported concrete beam 6m long is reinforced with four-28mm diam. tension barss. The beam has a width of 300mm and overall depth of 400m. The steel covering to the centroid of the reinforcements is 70mm, fc’= 30 MPa and fy= 418 MPa. A. Draw the stress diagram. B. Compute for the Ultimate capacity of the beam Note: Don’t conclude compression bars.A simply supported concrete beam 6m long is reinforce with four-28 mm diamgram tension bars. The beam has a width of 300mm and over all depth of 400.the steel covering to the centroid of the renforcement is 70 mm fc=30mpa and fy 418mpa A .draw a stress diagram B.compute for the ultimate capacity of the beam
- Calculate the maximum stress in a 5mm thick steel plate with an 18 mm diameter round hole, given h gross = 12cm and the tensile load is 8.5 kN. (Submit answer in Mpa) Please solve carefully, Specifically Area calculation. ThanksA simply supported beam 300 mm wide, 500 mm deep and spans 5.4 m supports a service super imposed dead load of 9 kN/m and service live load of 9 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the depth of equivalent rectangular stress block (mm) at ultimate stage. Write your answer in 2 decimal places only.1. A simply supported beam 300 mm wide, 500 mm deep and spans 5.7 m supports a service super imposed dead load of 9 kN/m and service live load of 9 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the depth of equivalent rectangular stress block (mm) at ultimate stage. Write your answer in 2 decimal places only. 2. A simply supported beam 300 mm wide, 500 mm deep and spans 5 m supports a service super imposed dead load of 7 kN/m and service live load of 6 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015. Write your final answer to the nearest whole number.
- A reinforced concrete T-beam has the following properties: Flange width, bf = 1,350 mm Width of web, bw = 300 mm Gross depth, h = 500 mm Effective depth, d = 420 mm Concrete strength, f’c = 21 MPa Steel strength, fy = 415 MPa 10. If the beam is reinforced with 3-20-mm-diameter bars at the bottom (in single layer), determine the resulting depth of rectangular stress block at ultimate stage. = mm (2 decimal places) 11. What is the condition of failure? = (Balanced, Tension controlled, Compression controlled, Transition) 12. Calculate the design moment strength of a typical interior beam. = kN⋅m (whole number)The column is constructed from high-strength concrete and eight A992 steel reinforcing rods. The column is subjected to an axial force of P=210 kip. Each rod has a diameter of 1 in.in. For A992 steel, Est=29.0(103)ksi, and for high-strength concrete, Ec=4.20(103)ksi. Determine the average normal stress in the concrete and in each rod. (Please type answer no write by hend)4.17. A rectangular beam made using concrete with f c ′ = 6000 psi and steel with f y = 60,000 psi has a width b = 20 in., an effective depth of d = 17.5 in., and a total depth of h = 20 in. The concrete modulus of rupture f r = 530 psi. The elastic moduli of the concrete and steel are, respectively, E c = 4,030,000 psi and E s = 29,000,000 psi. The tensile steel consists of four No. 11 (No. 36) bars. ( a ) Find the maximum service load moment that can be resisted without stressing the concrete above 0 .45 f c′ or the steel above 0.40 f y . ( b ) Determine whether the beam will crack before reaching the service load. ( c ) Compute the nominal flexural strength of the beam. ( d ) Compute the ratio of the nominal flexural strength of the beam to the maximum service load moment, and compare your findings to the ACI load factors and strength reduction factor.
- A rectangular concrete beam has a width of 400 mm and an effective depth of 700 mm. It is reinforced with five 28-mm diameter bars for tension only. Concrete strength is f's = 21 MPa and steel yield strength is fy = 275 MPa. Which of the following most nearly gives the depth of the rectangular compression stress block? A. 188.15 mm B. 151.93 mm C. 139.51 mm D. 118.58 mm35 Determine the tensile steel strain (in 5 decimal places) compatible with concrete strain of 0.003 for a singly reinforced beam 300 mm wide, 600 mm deep reinforced at the bottom with 6-ϕ20 mm bars with effective depth 518 mm. Use f’c = 21 MPa and fy = 420 MPa.The concrete post shown is reinforced axially with four symmetrically placed steel bars each of cross-sectional are 900mm^2. If the 1000 kN axial load is applied and the moduli of elasticity are 200 GPa for steel and 14 GPa for concrete. Determine a) the stress in each of the steel bars, and b) the stress in the concrete.