Design a round spiral column to support an axial dead load of 1200 kN and live load of 1500 kN. Use gross steel ratio of approximately 3%. Assume fc’ = 28 Mpa and fy = 415 Mpa. Use 25 mm bars for main reinforcement and 10 mm bars for spiral reinforcement. a. Compute for the required area of steel. b. Determine the number of longitudinal bars. c. Design the minimum spiral pitch if fyt = 415 MPa and concrete cover of 40mm d. Draw/sketch the cross-sectional detail of the column.

Q: A W 305 x 87, 7.5m llong, is pinned at both ends and braced in the weak direction at the third…

A: Given :W 305 x 87 section L = 7.5 m or 7500 mm A = 10965 mm2 Ix = 331.2 x 106 mm4 Iy = 55.78 x 106…

Q: Use bonded tendons as prestressed reinforcement. Determine the nominal moment strength. (kN-m)

A: Given Data: The data are given as: fc' = 35 MPafpu = 1500 MPaAps = 1800 mm2fpy = 1320 MPa   To…

Q: Assume Grade 50 steel and use f. = 5,000 psi for parts (a) thru (b). (a) The beam below is subjected…

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Q: For the given loaded truss, the allowable tensile stress in any member is up to 800 MPa while the…

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Q: Determine the unity check ratio for the member GF of the truss shown below (Per API RP-2A code…

A: Ductility is the ratio of max. Ductile force and maximum force in the member. Higher the ductility…

Q: Problem # 3: For the given beam, use 150 pcf concrete: Consider two possible load combinations: a.…

A: Given: Load conditions: U=1.2D+1.6L U=1.4D Loads: WD=3.7 kip/ft + self weight WL=0.75 kip/ft…

Q: Problem 4: Find the design moment strength for the following section: f'c = 7000 psi Es = 29,000 ksi…

A: Stress strain curve reinforcing steel,

Q: tensile-reinforced d=500mm to the center of the bars, which are placed all in one row. If f,=42QMPA…

A: Given, b=300 mm d=500 mm Yield stress of steel fy=420 MPa Characteristic strength of concretefck=35…

Q: A bracket carries an eccentric load of P = 150 kN at an eccentricity of as shown. Diameter of bolt…

A: P=150kN Psinθ=150×35=90kN Pcosθ=150×45=120kN   1. Reaction on Bolt A RA=P3=Pcosθ3i^-Psinθ3j^…

Q: A wooden beam is fabricated from one 2 × 10 and two 2 x 8 dimension lumber boards to form the…

A: A wooden beam is given in the question. Which is fabricated by the 2 by 10 and 2 by 8 lumber boards…

Q: A W21 × 101 is used as a compression member with one end fixed and the other end free. The length is…

A: Given data,  W21x101 Length = 9 m Fy = 345 MPa

Q: 1. A rectangular beam has uniformly distributed dead and live loads along its full length as shown…

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Q: Assume the section has cracked and use the transformed-area method to compute the required…

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Q: d. The end of each bar includes a standard 90 degree hoo m the outside face of the supporting…

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Q: The vertical force P acts on the top of the post. Please determine the distance d at which the load…

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Q: The short steel post as shown in Figure 4 is a 152 x 152 UC37 with three compressive loads applied…

A: Stress on the face AB = Axial Compressive stress by three loads + Bending Compressive stress by load…

Members with compression and bending

Compression members are structural elements that carry compressive axial force. They are the vertical members of a building that support beams and their design, which is governed by buckling and strength. Columns are known as struct or compression members, which are subjected to compressive forces. These members provide stiffness to the building and avoid any imperfection regarding the transfer of axial load. For instance, webs in a truss, braces in a framed structure, tiers, and so on.