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

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

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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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.
Q#2: {7} Compute the allowable load using the General (Meyerhof) Bearing Capacity equation for the rectangular footing and soil parameters shown in Figure # 2. Use a safety factor of 3 and assume dimension of footing B = 1m, and L = 2m. Figure # 2 Note: Write the proper answer in word format Subject: Geotechnical Design
A strip footing shown is resting on loose sand has the following data (refer to figure h = 0.95 m Df = 1.9 m B = 1.8 m Unit weight of soil above GWT = 1750 kg/m3 Saturated Unit weight of soil = 1950 kg/m3 c = 12 kPa Angle of internal friction = 30 degrees Calculate the following: Net Allowable Bearing Capacity of the footing using Terzaghi’s assumption, kPa. Use FS = 2.5
Calculate the ultimate bearing capacity considering the following: A. A strip footing, 2 meters wide. B. A square footing 3 m by 3 m C. A circular footing 3 m in diameter. All footings are located at the ground surface and groundwater level is at the ground surface. The soil is coarse-grained with saturated unit weight of 19.8 kN/m3 and angle of internal friction of 25°.
Define Load-Settlement Response of Footing on Sand ?
A rectangular footing has dimensions shown and is acted upon by a dead load of 584 kN and a live load of 412 kN. The column dimension is 399x719 mm where the shorter dimension is parallel to B. The thickness of the footing is 696mm. fc=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.8m and B=5.7m Calculate the number of bars along the long direction
A rectangular footing has dimensions shown and is acted upon by a dead load of 382 kN and a live load of 536 kN. The column dimension is 307x560 mm where the shorter dimension is parallel to B. The thickness of the footing is 656mm. fc=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.6m and B=5.2m
Calculate the Safe bearing capacity per unit area of(i) a strip footing 1 m wide (ii) a square footing 3m x 3m (iii) a circular footing of 3m diameter. (iv) a rectangular footing of 1.3x 2.2 m. Unit weight of the soil 1.8 t/m3, cohesion = 2t/m2 And Ф = 200, Nc =17.5, Nq = 7.5 and N γ = 5. Depth of footing is 1.6m below ground surface
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.
The following table shows the boring log at a site where a multi-story shopping center would be constructed. Soil classification and the standard penetration number, N60, are provided in the boring log. All columns of the building are supported by square footings which must be placed at a depth of 1.5 m. Additionally, the settlement (elastic) of each footing must be restricted to 20 mm. Since the column loads at different location can vary, a design chart is helpful for quick estimation of footing size required to support a given load. a. Prepare a chart by plotting the variation of maximum allowable column loads with footing sizes, B = 1 m, 1.5 m, 2 m, and 3 m. Use a factor of safety of 3. b. If the gross column load from the structure is 250 kN, how would you use this chart to select a footing size? c. What would be the design footing size for the column in Part (b) if you use Terzaghis bearing capacity equation? For the well graded sand, assume that = 33. Use Fs = 3. d. Compare and discuss the differences in footing sizes obtained in Parts b and c.
Calculate the ultimate bearing capacity considering the following:A. A strip footing, 2 meters wide.B. A square footing 3 m by 3 mC. A circular footing 3 m in diameter.All footings are located at the ground surface and groundwater level is at the ground surface. The soil is coarse-grained with saturated unit weight of17.8 kN/m3 and angle of internal friction of 30°.
Problem 1 A 3m x 3m square footing is constructed at a depth of 2m in a 26m deep clay layer with following soil properties: g =16.5kN/m3, Normally Consolidated Clay, eo= 0.65, Cc = 0.25,ms=5 and Es= 6.0 MN/m2. If there is a 1000kN structural load on the footing, calculate the consolidation settlement of the footing. A 2m X 2m footing carrying 1400kN load is constructed in a site with 2.5m thick clay layer under a 2.5m thick sand layer. If the footing and the ground water table are located at 1.5m below the surface, calculate the consolidation settlement of the footing. You may assume the following soil properties: for sand gsat = 19.25kN/m3 and gt = 7kN/m3, and for clay eo= 0.65, Cc = 0.25, Cs = 0.06, s’p = 200kN/m2 and gsat =19.25kN/m3. A 1882kN load is carried by a 2.6m x 2.6m square footing at a depth of 1.4m in a 30 m deep sand layer. Given the following soil properties for soil calculate the total settlement of the footing after 10 years. Where soil properties are: g = 15.9…