FOUNDATION AND RETAINING WALL 2 2. Design a plain concrete footing to support a 400 mm thick concrete wall. The load on the wallconsists of a 230 kN/m dead load (including the self-weight of the wall) and a 146 kN/m liveload. The base of the footing is 1200 mm below the final grade. fc' = 21 MPa, fy = 420 MPa,the gross allowable soil pressure = 240 kN/m?, the soil density is 18kN/m³ and the concreteweighs 25 kN/m3.1) Estimate the size of the footing. Use 500mm as the total depth of footing.2) Estimate the factored net pressure (qu).3)Compute the one-way shear force and state whether safe or not. Steel covering =75mm.4)Determine the moment at the critical section.5)Determine the spacing of the 20mmø main bars and the 12mmø longitudinaltemperature and shrinkage steel.

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Design a plain concrete footing to support a 400 mm thick concrete wall. The load on the wall consists of a 230 kN/m dead load (including the self-weight of the wall) and a 146 kN/m live load. The base of the footing is 1200 mm below the final grade. fc' = 21 MPa, fy = 420 MPa, the gross allowable soil pressure = 240 kN/m², the soil density is 18kN/m and the concrete weighs 25 kN/m3. 1) Estimate the size of the footing. Use 500mm as the total depth of footing. 2) Estimate the factored net pressure (qu). 3) Compute the one-way shear force and state whether safe or not. Steel covering = 75mm. 4) 5) Determine the spacing of the 20mmø main bars and the 12mmø longitudinal temperature and shrinkage steel. Determine the moment at the critical section.

Design a plain concrete footing to support a 400 mm thick concrete wall. The load on the wall consists of a 230 kN/m dead load (including the self-weight of the wall) and a 146 kN/m live load. The base of the footing is 1200 mm below the final grade. fc' = 21 MPa, fy = 420 MPa, the gross allowable soil pressure = 240 kN/m², the soil density is 18kN/m and the concrete weighs 25 kN/m3. 1) Estimate the size of the footing. Use 500mm as the total depth of footing. 2) Estimate the factored net pressure (qu). 3) Compute the one-way shear force and state whether safe or not. Steel covering = 75mm. 4) 5) Determine the spacing of the 20mmø main bars and the 12mmø longitudinal temperature and shrinkage steel. Determine the moment at the critical section.

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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