Figure Q4Figure Ibelow shows square footing which placebelow the ground surface. of soil layer.lood75° withinclined atTomallowableTheof900 kNhorizontal axis andrespect totheclockwisemomentof233kN-m.the factor of safety againts Shear failuregeneral equation ofusingMeyerhofultimate bearingslightycapacity. AssumetheGWTis situatedbelowthebaseofthefooting. Ignore Slidingduetohorizontalload.PleaseconsidereccentricityB directionit neccessary.No =33.30Ny 48-03YsatY = 18 kN/m³35°inDetermine9 = 35°1.omTNc = 46.12Qall 900KN#75°0.9mFigure I0.9m-19.5 kN/m

P= 900 kN moment = 233 kN-m θ=75° Nc= 46.12 Nq= 33.3 Ny= 48.03 ϕ= 35° To find = FOS…

Figure I below shows Tom below the ground surface allowable lood of 900 kN respect to moment square footing which place of soil layer. The inclined at 75° with the horizontal axis and clockwise of 233 kN-m. the factor of safety againts Shear failure general equation Meyerhof of ultimate bearing GWT is situated slighty Assume the the base of footing. Ignore Sliding the load. Please horizontal consider eccentricity Ny 48-03 Determine using capacity. below to B direction 350 due in neccessary. it Nc = 46.12 No, = 33.30

Figure I below shows Tom below the ground surface allowable lood of 900 kN respect to moment square footing which place of soil layer. The inclined at 75° with the horizontal axis and clockwise of 233 kN-m. the factor of safety againts Shear failure general equation Meyerhof of ultimate bearing GWT is situated slighty Assume the the base of footing. Ignore Sliding the load. Please horizontal consider eccentricity Ny 48-03 Determine using capacity. below to B direction 350 due in neccessary. it Nc = 46.12 No, = 33.30

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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i. A 550mm x 550mm column carries service dead load of 1300kN and service live load of 1100 kN. The column is to be supported by square footing having a thickness of 475mm and whose bottom is 1.75m below the ground. Allowable soil bearing capacity at the base of footing is 250kPa. Unit of weight of soil above footing is 18.3kN/m³. Use fc' = 28MPa and fy = 415MPa. Use 100mm steel cover. Determine the following: 1. Minimum soil bearing capacity so that footing length shall not exceed 4 meters? 2. Using the given soil bearing capacity, what is the design dimension of square footing? 3. Determine how many 28mm dia. rebars to be used bothways as continued from your answer in #2. 4. Is the footing thickness safe against punching shear? If so, determine the punching shear capacity of the section.
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