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Qa = 180 kPa Df = 1.5 m Unit wt. of concrete = 23.5 kN/m^3 Unit wt. of soil =17.2 kN/m^3 Bar diameter = 20 mm f`c = 20.7 MPa fy = 248 MPa Width of footing, B is limited to 2m only Column = 40 cm x 40 cm Assume height of footing = 350 mm (check adequacy, if failed - increase the depth) Use min. cover = 75 mm   Determine the following: (a) Effective Soil Bearing Pressure, Qe (b) Footing Dimension, L (c) Ultimate Soil Bearing Pressure, Qu

Qa = 180 kPa Df = 1.5 m Unit wt. of concrete = 23.5 kN/m^3 Unit wt. of soil =17.2 kN/m^3 Bar diameter = 20 mm f`c = 20.7 MPa fy = 248 MPa Width of footing, B is limited to 2m only Column = 40 cm x 40 cm Assume height of footing = 350 mm (check adequacy, if failed - increase the depth) Use min. cover = 75 mm   Determine the following: (a) Effective Soil Bearing Pressure, Qe (b) Footing Dimension, L (c) Ultimate Soil Bearing Pressure, Qu

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Design an isolated rectangular footing:

 

P(dead load) = 225 kN

P(live load) = 130 kN

Qa = 180 kPa

Df = 1.5 m

Unit wt. of concrete = 23.5 kN/m^3

Unit wt. of soil =17.2 kN/m^3

Bar diameter = 20 mm

f`c = 20.7 MPa

fy = 248 MPa

Width of footing, B is limited to 2m only

Column = 40 cm x 40 cm

Assume height of footing = 350 mm (check adequacy, if failed - increase the depth)

Use min. cover = 75 mm

 

Determine the following:

(a) Effective Soil Bearing Pressure, Qe

(b) Footing Dimension, L

(c) Ultimate Soil Bearing Pressure, Qu

(d) Check for Shear Criteria (Beam Shear)

(e) Check for Shear Criteria (Punching Shear)

(f) Required Steel Area (Long and Short Direction)

PR d P L- clear cover hs hc Df
Transcribed Image Text:PR d P L- clear cover hs hc Df
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