Problem 2. Determine the stress on the steel and concrete of the beam shown if n= 8. Use f'c= 21.0 MPa b = 437mm h = 530mm
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- Determine the prestressing force required for the precast concrete T-beam. Use the following data: Total moment = 250 kN-m Effective stress fse= 862 MPa Allowable concrete stress = f =11 MPa Consider zero stress at the bottom of the beam I=3673x106 mm A=103125 mm2 Eccentricity = 271.6 mm Centroid of steel is located at 100 mm from the bottom of the beam.A simply supported rectangular beam of length 6.45m has a width of 437.5 and an effective depth of 692.5. The beam is to be reinforced using 12 mm bars. The beam supports service dead loads of 31 kN/m and 39.5kN/m., respectively. the fc' is 28MPa, fy is 420MPa and Wu is 89.9kN/m. 1. what is the ultimate moment capacity of the beam? 2. what is the height of the equivalent stress block? 3. Determine the number of bars required for this beamIf FA = 40 kN and FB = 35 kN, determine the magnitude of the resultant force and specify the location of its point of application (x, y) on the slab.
- Solve any Problem on Horizontal shear stress formula for beamsA rectangular beam has a dimension of 210 mm x 260 mm. The simply supported beam is 5-m long and carries a concentrated load of 25 KN at the midspan. What is the maximum flexural stress of the beam? Blank 1 (use two decimal places)A 360 mm thick footing slab supports a 300 mm thick wall carrying uniform service dead load of 264.7 kN/m and service live load of 111 kN/m. The base of the wall footing slab is 1.1 m from the ground surface. Use 16 mm diameter for main bars. Design parameters are as follows: γsoil = 18 kN/m3, γconc = 24 kN/m3, qa = 233.2 kPa, f’c = 27 MPa and fy = 414 MPa. Calculate the allowable nominal beam shear stress in MPa. Express your answer in 3 decimal places.
- Refer to the figure below.The square steel tube carries 100kN of axial compressive force. Compute the compressive stress in the tube and the bearing stress between each contacting surface. Consider the weight of the concrete pier to be 1000 N.Determine the average normal stress developed on the cross section as shown inFigure 1.Determine the normal stress in each of the cables? (MPa) a. 85.7 b. 75.7 c. 65.7 d. 55.7 If the cables elongated by 1 mm, what is the vertical displacement of the precasat slab? (mm) a. 1.758 b. 1.658 c. 1.458 d. 1.558 What is the tensile force in each of the cables? (kN) a. 5.98 b. 4.98 c. 7.98 d. 6.98 SOLVE ALL AND WILL GET A LIKE <3 ps: unit weight of concrete is 24kn/m^3
- 2. A reinforced concrete beam having a width of 280 mm and a total depth of 600 mm isreinforced for tension at the bottom with 6 - 36 mmɸ bars placed on two layers, 4 bars onfirst layer and 2 bars on second layer. Compute the effective depth of the beam and theclear horizontal spacing between bars.A 250 mm wide rectangular concrete beam is reinforced for tension only. The beam has an effective depth of 300 mm. fc’ = 9.3 MPa, fs = 138 MPa, n = 9. Use working stress design for balanced condition. 1. Which of the following most nearly gives the value of k. a. 0.3225 b. 0.3526 c. 0.6234 d. 0.3775 2. Which of the following most nearly gives the value of j. a. 0.7482 b. 0.8472 c. 0.8742 d. 0.4278 3. Which of the following most nearly gives the balanced moment capacity of the beam in kN.m. a. 34.52 b. 45.36 c. 36.7 d. 32.3The square steel tube carries 100kN of axial compressive force. Compute the compressive stress in the tube and the bearing stress between each contacting surface. Consider the weight of the concrete pier to be 1000 N