(a) Design (determine only B and L) a rectangular footing for the conditions in the figure below and using the assigned data given in the table (Note: Refer to a rectangular combined footing from the textbook Chapter 10.2 (8.2 for 8th Ed)). L Section B- quetiali/unit length Property- B Plan line Figure 1. Concept of a rectangular combined footing Load Load Spacing Location of the Allowable soil fe' fy (Q.) (Q2) (L3) Property Line (L2) pressure (qalu) 480 kN 570 kN 4.5 m 1.5 m 21 MPa 400 MPa 175 kPa

(a) Design (determine only B and L) a rectangular footing for the conditions in the figure below and using the assigned data given in the table (Note: Refer to a rectangular combined footing from the textbook Chapter 10.2 (8.2 for 8th Ed)). L Section B- quetiali/unit length Property- B Plan line Figure 1. Concept of a rectangular combined footing Load Load Spacing Location of the Allowable soil fe' fy (Q.) (Q2) (L3) Property Line (L2) pressure (qalu) 480 kN 570 kN 4.5 m 1.5 m 21 MPa 400 MPa 175 kPa

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter16: Soil Bearing Capacity For Shallow Foundations

Section: Chapter Questions

Problem 16.14P: Redo Problem 16.13 with the following data: gross allowable load = 184,000 lb, = 121 lb/ft3, c = 0,...

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1. A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below grade. The column bearing on this footing will impose a load of 180kips. Assuming the subsurface conditions shown below with groundwater 5ft below grade, Use Schmertman's method to calculate the elastic settlement of the system 6 years after construction is completed, provide a clear sketch and show units and state assumptions. Oft Sand Ymoist = 120 pcf Phi = 30deg Es = 52 ksf 4ft Loose Sand 5ft Ymoist = 125 pcf Yat = 145 pcf Phi = 22deg Es (above GW) = 30 ksf Es (below GW) = 20 ksf 8ft Dense Sand Ysat = 155 pcf Phi = 35deg Es = 60 ksf 20ft 2. The foundation above is limited to a 1.5" settlement after 10 years, speak to whether the design is adequate and if not how can you adjust the project to meet this criteria.
---Continuation of my recently posted question---A rectangular footing has dimensions shown and is acted upon by a dead load of 1200 kN and a live load of 1600 kN. The column dimension is 300x600 where the shorter dimension is parallel to B. The thickness of the footing is 500mm. F'c = 28 MPa and fy = 420 MPa for diameter 20mm bars. A = 2.4m and B = 4.2m Calculate the following:1.)The Punching shear force, kN2.)The Ultimate Punching Shear stress, MPa3.)The Critical Moment, kN-m4.)Is the given footing adequate for the given loads? Yes or No? Explain
Redo Problem 16.13 with the following data: gross allowable load = 184,000 lb, = 121 lb/ft3, c = 0, =26, Df = 6.5 ft., and required factor of safety = 2.5. 16.13 A square footing (B B) must carry a gross allowable load of 1160 kN. The base of the footing is to be located at a depth of 2 m below the ground surface. If the required factor of safety is 4.5, determine the size of the footing. Use Terzaghis bearing capacity factors and assume general shear failure of soil. Given: = 17 kN/m3, c = 48 kN/m2, =31.
Prepare a spreadsheet to compute settlement of square footings using the e@log@p method. Thespreadsheet should allow input of: footing width, footing depth, groundwater depth, columnservice load, footing rigidity factor and Cr/(1 + e0), Cr/(1 + e0), sm′, and g as function ofdepth. Check your spreadsheet using a hand solution
2. Change the footing dimension in the question below to a strip footing with width of 6 ft. and find the settlement using Schmertmann's modified method to calculate the required settlement. Example 8-2: A 6 ft x 24 ft footing is founded at a depth of 3 ft below ground elevation with the soil profile and average N160 values shown. Determine the settlement in inches (a) at the end of construction and (b) 1 year after construction. There is no groundwater. The footing is subjected to an applied stress of 2,000 psf. Ground Surface Clayey Silt 3 ft Y = 115 pcf; N160= 8 Sandy Silt B = 6 ft 3 ft Y = 125 pcf; N160= 25 Coarse Sand 5 ft Yt = 120 pcf; N160= 30 Sandy Gravel 25 ft Yt = 128 pcf; N160= 68
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Answer asap. use cubic meter for final answer
A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below grade. The column bearing on this footing will impose a load of 180kips. Assuming the subsurface conditions shown below with groundwater 5ft below grade, Use Schmertman’s method to calculate the elastic settlement of the system 6 years after construction is completed, provide a clear sketch and show units and state assumptions.
A spread footing supported on a sandy soil has been designed using ASD to support a certaincolumn load with a factor of safety of 2.5 against a bearing capacity failure. However, there issome uncertainty in both the column load, P, and the friction angle, f. Which would have thegreatest impact on the actual factor of safety: an actual P that is twice the design value, or actualf that is half the design value? Use bearing capacity computations with reasonable assumedvalues to demonstrate the reason for your response.
Rectangular footing (4m x 5m) was supported by a saturated clay layer with a thickness of 5m. If the second layer (below the clay) was a saturated sand. The settlement that could be occurred in this site: a. Is only consolidation settlement b. None of the given answers are correct c. Is a short term settlement d. Is only long term settlement
Define Load-Settlement Response of Footing on Sand ?
Problem Set 1 (PS1) Determine the qult and Qult for the 8ft x 8ft spread footing in the soil profile below: I Quit Clay Butt Above the base of the footing: y= 110 pcf; = 25° ;c=0 %3D Below the base of the footing: Ymoist = 115 pcf; = 34°; c=0 %3D (Hint: Local shear failure)