SITUATION 2. A spiral column 600 mm in diameter has an unsupported height of 2.4 m. The column is bent in single curvature and is braced against sidesway. Given: Axial loads at service condition Dead Load, DL = 3200 kN Live Load, LL = 1420 kN Compressive strength, f,' = 28 MPa Steel yield strength, fy = 413 MPa 5. If the required steel ratio is 1.7%, find the corresponding number of 28 mm diameters required. c. 10 bars d. 12 bars a. 6 bars b. 8 bars 6. Find the number of 32mmø bars required the ultimate design load strength, U=1.2D +1.6L. a. 6 bars b. 8 bars c. 10 bars d. 12 bars

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Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.