For a compression member, what are the limit states ?
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- A rectangular reinforced concrete beam 300 x 500 mm (b x d) is provided with 4H20 bar as compression steel. Determine the area of tension steel needed for the beam to attain its full = moment capacity. Calculate the corresponding ultimate moment of resistance. Assume fck = 30 N/mm2and fyk = 500 N/mm2and d’ = 50mm. Based on the propose design, make a design checkCalculate the ultimate axial load capacity of a round spiral column having a diameter of 450mm reinforced with six 25mm bars having fy=276 MPa. Assume fc’=34MPa.The compression member shown in Figure is pinned at both ends and supported in the weak direction at midheight. A service load of 400 kips, with equal parts of dead and live load, must be supported. Use Fy 5 50 ksi and select the lightest W-shape
- Design a rectangular beam reinforced for tension only to carry dead load moment of 85 kN-m (including its estimated weight) and a live load of 102 kN-m. Use ρ = 60% of rho balance. Assume fy = 276 MPa and f’c = 28 MPa. Use the 2015 NSCP.A beam must be designed to the following specifications: ●● Span length = 35 ft ●● Beam spacing = 10 ft ●● 2-in. deck with 3 in. of lightweight concrete fill (wc = 115 pcf) for a total depth of t = 5 in. Total weight of deck and slab = 51 psf ●● Construction load =20 psf ●● Partition load = 20 psf ●● Miscellaneous dead load =10 psf ●● Live load=80 psf ●● Fy =50 ksi, f,c 4 ksi Assume continuous lateral support and use LRFD.A T-beam section is to be designed to support an ultimate moment of Mu=600kN.m with compression in the flange of the beam. Using bf=650mm, hf=100mm, h=600mm, bw=400mm, f'c=21MPa, fy=415MPa, diameter of the bar=32mm, stirrups diameter=10mm, and concrete cover=40mm, calculate the following: Calculate the depth of compression block of the final section in mm.0 Calculate the ultimate moment capacity of the final section in kN.m.0 need solving in paper please thank you
- Check the safety of the section shown in Figure 2 below, using the Bresler Reciprocal Load method, where the section is subjected to a factored axial compression force and bi-axial moments as shown, giving that fc’ = 35 MPa, fy = 400 MPa, design cover (dc)= 50 mm. If the section is unsafe, what are your recommendations to increase the section capacity? Pf = 1 850 kNMfy = 200 kN.mMfx = 135 kN.mA 7.5 m long simple span beam as shown below supports a deadload andliveload throughout its entire length. If the following loads and materialproperties are given:DL = 18 kN/m LL = 25 kN/mfc’ = 25 MPa fy = 390 MPaa. Determine the factored moment carried by the beam.b. Determine the location of the neutral axisc. Determine the number of 36 mm ø bars needed for the beam.Find lightest W14 for L = 20’ and w = 3k/ft AND concentrated loads of 6k @ 4ft o.c. E = 29,000ksi, Fb = 30ksi and Fv = 20ksi
- M1AQ95. For a loaded propped beam in the figure below, design a singly reinforced beam (using the USD method and NSCP 2015) for the positive moment. Give the complete details of the design. The total depth of the beam must not exceed 600 mm to ensure acceptable floor-to-floor vertical clearance. f'c = 27.2 MPa and fy = 415.4 MPa. It carries a super- imposed dead load of 102 kN/m and a live load of 39.8 kN/m all applied over the entire length of the beam. Other load and beam properties are the following: L1 = 6.3 m, L2 = 2.5 m, I2 = 0.85 of I1. Use a minimum concrete cover of 60 mm. Optimize the design such that the minimum percent difference of the moment strength with the actual moment is 1% but to avoid overdesign it's max percent difference is 5%. Design the rectangular beam details to provide: width, total depth, effective depth, number and diameter of tension bars (for two layers, provide number of bars in the upper and lower layer and vertical clear spacing between the 2 layers),…A short, braced column is subjected to an ultimate applied axial load of 3000 kN and a nominal moment only. Using the design data given: Design the main steel reinforcement with minimum size of square column to carry the load without failure Design Data: Characteristic strength of concrete fcu = 40 N/mm2 Characteristic strength of reinforcing steel fy = 460 N/mm2 Clear height between the end restraints about both axes = 5.0 mA T-beam section is to be designed to support an ultimate moment of Mu=600kN.m with compression in the flange of the beam. Using bf=650mm, hf=100mm, h=600mm, bw=400mm, f'c=21MPa, fy=415MPa, diameter of the bar=32mm, stirrups diameter=10mm, and concrete cover=40mm, calculate the following: If the entire area of the flange is in compression, calculate the moment strength provided by the flange in kN.m.0 Calculate the depth of compression block necessary to balance the given ultimate moment in kN.m.0 Calculate the area of steel reinforcement necessary to support the ultimate moment in mm2.0 Calculate the depth of compression block of the final section in mm.0 Calculate the ultimate moment capacity of the final section in kN.m.0 need how to solve please thank you