Square Footing Design A square column footing is to support a 500-mm square tied column that carries service dead load of 800 kN and service live load of 1000 KN. The column is reinforced with eight 25-mm-diameter bars. The base of the footing is 1.50 m below the natural grade where the allowable soil pressure is 310 kPa. The soil above the footing has unit weight of 15.6 kN/m³. Assume fy = 275 MPa, f = 27.5 MPa, and unit weight of concrete as 23.50 kN/m³. Design the footing. Use 25 mm main bars and 75 mm clear cover. Use NSCP 2015.
Square Footing Design A square column footing is to support a 500-mm square tied column that carries service dead load of 800 kN and service live load of 1000 KN. The column is reinforced with eight 25-mm-diameter bars. The base of the footing is 1.50 m below the natural grade where the allowable soil pressure is 310 kPa. The soil above the footing has unit weight of 15.6 kN/m³. Assume fy = 275 MPa, f = 27.5 MPa, and unit weight of concrete as 23.50 kN/m³. Design the footing. Use 25 mm main bars and 75 mm clear cover. Use NSCP 2015.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:### Square Footing Design
A square column footing is to support a 500 mm square tied column that carries a service dead load of 800 kN and a service live load of 1000 kN. The column is reinforced with eight 25-mm-diameter bars. The base of the footing is 1.50 m below the natural grade where the allowable soil pressure is 310 kPa. The soil above the footing has a unit weight of 15.6 kN/m³.
Assume the following parameters:
- Yield strength of steel, \( f_y = 275 \, \text{MPa} \)
- Compressive strength of concrete, \( f'_c = 27.5 \, \text{MPa} \)
- Unit weight of concrete as \( 23.50 \, \text{kN/m}^3 \)
Design the footing using 25 mm main bars and provide a clear cover of 75 mm. Use NSCP 2015 standards for the design.
(Note: There are no graphs or diagrams provided in the image. If any were available, a detailed description of such visual aids would be included here to facilitate understanding.)
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