A column 18 in. square, with f. = 4 ksi, reinforced with eightNo. 8 (No. 25) bars of f, = 60 ksi, supports a dead load of 225 kips and a live load of 175 kips.The soil (fill) has a unit weight of 100 pcf. The allowable soil pressure q, is 5 kips/ft?. Designa square footing with base 5 ft below grade, using f = 4 ksi and f,60 ksi.

Step-1: Determining of net allowable soil pressure (qo): Step-2: Determination of footing size:…

Answered: A column 18 in. square, with f. = 4…

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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Q-2) A (2 m) wide square footing is to be embedded at (1.5 m) below ground surface. Consider the groundwater table to be very deep. The variations of (y) and (q.) with depth are presented in Table below. The foundation is designed for a gross safe pressure of (250 kPa). Predict the footing immediate settlement (10 years) after the construction, using Schmertmann's method. [Answer = 34.4 mm]. Depth below G.S (m) 0-2 2-5 5 and below y (kN/m³) qc (kPa) 18 6000 17 5000 19 7500
A proposed building column will carry a maximum downward unfactored load combination is 250 kips and a service load of 185 kips. The column is to be supported on a square footing at a depth of 7 ft. in silty sand with the following engineering properties: y=119 lb/ft³ above the groundwater table and 122 lb/ft³ below, c'=0, '= 32°, and Neo-30. The groundwater table is 15 ft. below the ground surface. The allowable settlement da is 0.75 inches. The ASD factor of safety is 2.5. Determine the design of the footing width clearly identifying if it is controlled by settlement or bearing capacity.
Q.6 A column 12" square with fe' = 5 ksi reinforced with 8 #10 bars of fy= 60 ksi, supports a service load of 91.87 kips (factored load=113.17 kips). The allowable soil pressure is 3.904 k/ft. Design a square footing with base 5' below surface. Take unit weight of soil as 100 psf. (14)
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A footing of size 2.5 m x 2.5 m and 500 mm thick resists characteristic axial loads of 800kN dead and 300 kN imposed from a 400 mm square column. The safe bearing pressure on the soil is 230 kN/m2 and the characteristic material strengths are fcu = 35 N/mm2, fy=460N/mm2. Density of concrete is 24 k N/m3. Cover to all reinforcement is 50 mm. Determine the design load b) Check whether the base pressure is safe c) Design the bending reinforcement, assuming 16 mm diameter bars.
A rectangular footing has dimensions shown and is acted upon by a dead load of 668.00 kN and a live load of 551.00 kN. The column dimension is 282x572 mm where the shorter dimension is parallel to B. The thickness of the footing is 564mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=3.3m and B=5.7m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in one- way shear. Consider critical case only. Answer is 0.6175 (Complete Solution)A
a square footing is designed to support a 300-mm x 400-mm concrete column that sustains an axial dead load of 160 kn and an axial live load of 250-kn. the base of the footing is 1.50 m below the final grade line, the soil weight is 16 kn/m, the gross allowable soil pressure, qa is 210 kpa, and a surcharge of 30 kpa. use fy=415 mpa, fc= 28 mpa and flexure bars are 16 mm in diameterdetermine the minimum size of the footing. assume initial thickness of slab equal to 400mma. 1.2 mb. 1.5 mc. 1.7 md. 1.9 m determine the maximum ultimate wide beam shear stress of the following if b = 2 m, t = 600 mmdetermine the maximum ultimate punching shear stress of the footing if b = 2 m, t = 600 mm
I need correct solution Solution in chegg was incorrect So please provide correct solution
1) Design a rectangular footing for an 16” square corner Column with PDL = 280 kips and PLL = 180 Kips. Make the length of the long side about 1.5 the width of the short side. Fy = 60 ksi F’o= 4000 psi for both, column and footing. Assume the base of the footing is 4'-6" below grade and the depth of the footing is 26". The soil weight is 100 PCF. (Normal weight concrete, No epoxy coating, The Column is reinforced with eight #8 bars.) Need to design for load transfer from the Column to the foating. Need to Show the development length for the dowels. Need to design the bars for footing at both directions. Need to check if the bars fit the footing based on the development legth. Need to show two-way footing Spacing diagram.
Please answer #2 thankyou
Answer the following problem and show your solution 1. A 400 mm concrete wall supports a DL= 200 kN and LL =146 kN. The allowable bearing pressure is 216 kPa at the level bottom of the footing which is H=1.2m below the grade. Weight of concrete is 24 kN/m^3 and that of soil is 16kN/m^3. Thickness of footing is 300mm with an effective depth of 225mm. use load combination of U=1.4DL+1.7LL f'c-28 MPa, fy=248MPa. Use 28 mm diameter reinforcing bars. Normal weight concrete λ=1.0 a. Determine the effective soil pressure b. Find the width of the wall footing c. Compute the spacing of 28mm diameter steel reinforcement

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