A 600 mm square interior column, reinforced with eight No.25 bars of Grade 420, supports a dead load of 866 KN and a live load of 577.33 KN. Assume that a live load reduction of 30% may be allowed at foundation level. The foundation is to be placed at a depth of 1m where the allowable bearing capacity is 110 KPa. The average density of the backfill material and the footing concrete together may be taken as 2100 Kg/Cu.m, while the filling from ground to plinth level is to be 0.5m of material with average density of 1900 Kg/Cu.m. Design a square footing using fc’=20 MPa, fy for foundation steel=300 MPa and fy for dowel steel=420 MPa.
A 600 mm square interior column, reinforced with eight No.25 bars of Grade 420, supports a dead load of 866 KN and a live load of 577.33 KN. Assume that a live load reduction of 30% may be allowed at foundation level. The foundation is to be placed at a depth of 1m where the allowable bearing capacity is 110 KPa. The average density of the backfill material and the footing concrete together may be taken as 2100 Kg/Cu.m, while the filling from ground to plinth level is to be 0.5m of material with average density of 1900 Kg/Cu.m. Design a square footing using fc’=20 MPa, fy for foundation steel=300 MPa and fy for dowel steel=420 MPa.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 600 mm square interior column, reinforced with eight No.25 bars of Grade 420,
supports a dead load of 866 KN and a live load of 577.33 KN. Assume that a
live load reduction of 30% may be allowed at foundation level. The foundation is to be
placed at a depth of 1m where the allowable bearing capacity is 110 KPa. The average
density of the backfill material and the footing concrete together may be taken as 2100
Kg/Cu.m, while the filling from ground to plinth level is to be 0.5m of material with
average density of 1900 Kg/Cu.m. Design a square footing using fc’=20 MPa, fy for
foundation steel=300 MPa and fy for dowel steel=420 MPa.
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