A square footing (10' x 10') is located 6' below grade. The lowest corrected N value (blow count) is 40 and groundwater was not encountered. If the maximum allowable settlement is 1", determine the maximum allowable soil pressure.
Q: Q1. Determine the net bearing pressure for a 3m x 3m footing at a depth of 2 m in a medium dense…
A: Data given:Size of footing =3m×3mdepth of footing =2mpermissible settlement =25mmfinal corrected SPT…
Q: A rectangular footing, with a plan area of 1-4mx2·0m is to be placed 2m below the ground surface.…
A: Given Information:
Q: Design of Shallow Footing Question: (See Photo) Note: Avoid rounding off values in the course of…
A: Given: An eccentrically loaded square footing of size 1.36 x 1.36 m Depth of footing = 1.7…
Q: A circular footing is 3.16m in diameter. The bottom fotting is 2.81m below the ground surface. Moist…
A: ultimate bearing capacity of soilqu=1.3 CNc+γDfNq+.3DγNγ = A + B + C γ in…
Q: Assuming general shear failure and using equation 6.28 with a FOS of 3 find the allowable gross…
A: Asked: To determine the allowable gross load for the given strip footing. Given: Width of the…
Q: A circular and a square footing have equal dimensions. Calculate the ratio of the ultimate bearing…
A: Given: Cohesion of soil, C = 0 Depth of footing, Df = 0 (as the footings are placed on the surface…
Q: A 2m wide strip footing is formed at a depth of 1.5 m below the ground level in a homogenous bed of…
A: The given data is as follows: Width of strip footing=2 mDepth of footing=1.5 mSoil=Dense…
Q: A column carrying a vertical downward ultimate factored load of 1,500 kN is to be supportedon a 1 m…
A: first, calculate the vertical stress at depth below ground surface σ=γD-uwhere,σ= vertical stress at…
Q: A 0.70 m wide continuous footing supports a wall load of 110 kN/m. The bottom of this foot-ing is at…
A: Solution: Given Data Unit weight of concrete=23.6 kN/m3 Wall load= 110 kN/m Unit weight of soil=17.5…
Q: A 5 ft wide, 8 ft long, 2 ft deep spread footing is underlain by a soil with c′ = 200 lb/ft2, f′ =…
A: Given data Width of footing B= 5 ftLength of footing L =8 ftDepthof footing D= 2…
Q: A circular footing is 2.5 m in diameter. The bottom of the footing is 2.73m. below the ground…
A:
Q: A rectangular footing 2.0 m by 3.0 m is built in a homogeneous bed of sand of having bulk unit…
A: (a) Assume the last digit of student number as 6. For given angle of shearing resistance, we get
Q: A bearing wall carries a total load of 2700 kN/m. It has to be supported on a 1-meter-deep…
A: Allowable bearing capacity is the maximum net intensity of the loading that can be imposed on the…
Q: If the footing 3.5m×3.5m, What is the critical factored shear force considering wide beam action?…
A: Given Data: The dead load is, D=760 kN The live load is, L=400 kN The weight of soil is, W=18.67…
Q: The design column loads for a certain building range from 20 to 100 kN. The site for thisstructure…
A: unit wt γ=18.2 KN/m3 and cohesion C=2 KN/m2friction angle ϕ= 34°depth of footing Df=1.3 m shape…
Q: A 1.2 m square, 0.4 m deep spread footing is underlain by a soil with the following properties:g =…
A: GIVEN- c′ = 5 kPa, f′ = 30° g = 19.2 kN/m3 d=0.4m
Q: FDE 009: According to section 304.2 of NSCP, the designated allowable foundation pressure of 75 kPa…
A:
Q: Question 01 A square footing (B*B) must carry a gross allowable load of 42,260 Ib. The base of the…
A: Square footing is provided to the support load on a single column and it is similar to the cube and…
Q: What should be the size of the base (footprint) of a square footing if it supports a column with a…
A: Given DL=200 kips LL=160 kips h- 5ft unit weight of soil = 110 lb/ft3 Allowable soil pressure= 5000…
Q: Determine the effective soil pressure if the soil bearing capacity is 130 kPa and the top of the…
A: The bearing capacity of soil is defined as the capacity of the soil which will bear the loads or we…
Q: The width and depth of a footing are 2 and 1.5 m respectively. The water table at the site is at a…
A:
Q: A steel-frame office building with no diagonal bracing is supported on spread footings founded in a…
A: Solution: Refer Table 7.5 for the design values of δDδ for spread footing foundations,Consider the…
Q: A building column carries factored ultimate loads of 5,500 kN vertical and 1,200 kN horizontal.The…
A: LFRD LFRD means Load and Resistance Factor Design. In many cases, it is used in the foundation of…
Q: A 1.5 m wide, 2.5 m long, 0.5 m deep spread footing is underlain by a soil with c′ = 10 kPa,f′ =…
A:
Q: In order to minimize the stress induced in the soil, a larger footing area should be employed.…
A: Given data in question Footing area Stress induced To find out True or false
Q: A strip footing 2.5 m wide is to be constructed at a depth of 3m below ground level. The shear…
A: Given, c|= 65kN/m2 ø| = 34°. Bearing capacity factors for ø| = 34, for case of general shear…
Q: 10. Calculate the ultimate bearing capacity considering the following: A. A strip footing, 2 meters…
A: Given data in question Strip footing Square footing Circular footing Water table at ground level…
Q: Calculate the ultimate bearing capacity considering the following: A. A strip footing, 2 meters…
A:
Q: A rectangular combined footing 8 ft * 20 ft is founded at a depth of 6 ft on a normally…
A: B = 8ft. D = 20ft. B' = 6ft Zh = 28 ft. qc = 50tsf
Q: Find the depth of the borehole required for the site investigation in which a circular footing of 3…
A: d- 3m Df - 2m P -1560 kN WT depth - 1.5m γd- 17 kN/m3 γsat- 19 kN/m3 To find the Depth of borehole…
Q: Calculate the ultimate bearing capacity considering the following: A. A strip footing, 2 meters…
A: given B. square footing 3m π 3mA . strip footing 2m wideC. circular fotting 3m in diameterevsect…
Q: 10. Calculate the ultimate bearing capacity considering the following: A. A strip footing, 2 meters…
A:
Q: 2. Determine soil bearing capacity by SPT numbers. Given: Soil SPT number: 10 Footing type: 3 feet…
A:
Q: Calculate the ultimate bearing capacity considering the following. A strip footing, 2 meters wide A…
A: Given: The width of strip footing is 2 m. The width of the square footing is 3 m. The diameter of…
Q: A 5ft x 5ft square footing with Terzaghi's bearing capacity parameters Nc=5, Nq=1.5, Nr=0.…
A: The formula for ultimate bearing capacity of square footing is given by, qult=1.3CNc+γDfNq+0.4γBNγ…
Q: A proposed 1.5 m wide square footing will be built on sandy soil with c' = 0, Φ' = 35°, γt = 18.5…
A: Given, width of the square footing = 1.5m Cohesion (c) =0 Angle of internal friction (Φ') = 35°…
Q: A strip footing is to be placed 2m below the surface or soil having a cohesion of 40 KPa, unit…
A: Given:- The depth of the footing to be placed = 2 m The cohesion of the soil = 40 kPa The unit…
Q: II. A square footing has a dimension of 1.2m x 1.2m and has its bottom 1 m. below the ground…
A: Note: Since we answer one question at a time so we will answer the first one. Please resubmit…
Q: A square footing, 1.7 m x 1.7 m, is to be founded at a depth of 1.4 m below the ground surface of a…
A: Ultimate bearing capacity The maximum load that can be supported without failing is known as the…
Q: A square footing shown has a dimension of 1.0 m x 1.0 m has its bottom 2.5 i. below the ground…
A:
Q: (a) Design (determine only B and L) a rectangular footing for the conditions in the figure below and…
A: Note: We'll answer the first question since the exact one wasn't specified. Please resubmit a new…
Q: A strip footing is to be designed to carry a load of 800 kN/m at the depth of 7m in a gravelly sand…
A:
Q: 2. Change the footing dimension in the question below to a strip footing with width of 6 ft. and…
A:
Q: A 3 m square footing supports a vertical column load of 200 kN and two moment loads with axes…
A: eccentric loading footing e=MP<L6e=124200=0.62L6=36=0.5so e>L6 a=L2-ea=32-0.62=0.88now equate…
Q: A 2.5m x 3.0m rectangular spread footing is founded in Dense Sand having a friction angle of 35…
A:
Q: A compressive column load of 134 KN is to be supported on a 0.75m deep square footing the allowable…
A: Given: Compressive column load = 134 kN Depth = 0.75 m Allowable bearing pressure = 115 kPa Unit…
Q: SITUATION. A 300 mm thick concrete wall is to be centrally located on a footing. The allowable soil…
A: Given Allowable soil bearing pressure(qv) = 192 kPa M = 160 kNm, V = 320 kN L = 2m (The value of L…
Q: A square footing located on a dense sand is required to carry a dead load of 200 kN and a live load…
A: Total load (P) = 500 kN Depth of footing = 1 m ϕ = 30° ϑsat =18.8 kN/m3 To find the size of footing…
Q: A 5 ft wide, 8 ft long, 2 ft deep spread footing is underlain by a soil with the following…
A: Given: The width is 5 ft. The length is 8 ft. The depth is 2 ft. The unit weight is 120 lb/ft3. The…
Q: A square footing carries a total load including its own weight of 5,000 kN. The base of the footing…
A: Given: A square footing carries a total load including its own weight of 5,000 kN. The…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 7. A continuous strip footing bears on sand with groundwater one-half the footing width below the base of the footing. Which of the following changes will Increase the allowable bearing pressure? D B/2 PFT B SAND A) Embedment depth remains D, but the footing width is decreased. B) Embedment depth remains D, but the groundwater is raised to B/4 below the base of the footing. C) Embedment depth and groundwater remain D and B/2, but the unit weight of the sand is increased. D) Groundwater remains at B/2 below the base of the footing, but the embedment depth is decreased.The underlying soil is a well-graded sand with c′ = 0, f′ = 36°, g = 126 lb/ft3, with a verydeep groundwater table. Using LRFD, design a rectangular footing to meet the ultimate limitstates using a resistance factor of 0.45. Assuming the average CPT tip resistance of the sand is300 kg/cm2, check to see if your design meets serviceability limits. Adjust the design as needed.Write a note on - Design Procedure of strip footing ?
- 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.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 proposed building is to be supported on a series of spread footing embedded 36 inches into the ground. The underlying soils consist of sitly clays with C/(1+e) 0.12, C/(1+e) 0.03, Sm' 5000 lb/ft², and g 120 lb/ft³. This soil strata extends to a great depth and the ground water table is at a depth of 15 ft below the ground surface. The allowable settlement is 1 in. Using the classical method, develop a plot of allowable column load vs. footing width to design the footing. = - =
- Compute the elastic settlement for a rigid 10 ft by 15 ft footing loaded with 4000 psf uniformly distributed bearing pressure on silty sand with Es = 1250 psi and ms = 0.3. The footing is located 6 ft below existing grade. Please note any assumptions.Wall footings are 0.4m wide, 0.2m thk, 0.6m deep from NGL, with 2-inch thick gravel bedding. How much gravel is needed for gravel bedding of Wall Footings? Select the correct response: 1.2 cu.m. 0.6 cu.m. 0.4 cu.m. 1.0 cu.m.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
- 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.A 7 foot-square footing is embedded 3 feet below the ground surface and is supported on a clayey sand fill having a total unit weight of 130 pcf. Groundwater is at 8 feet below the ground surface. Consolidated undrained triaxial tests with porewater pressure measurements on three "identical" samples suggest the fill has a drained friction angle of 29 degrees and drained cohesion of 50 psf. What is the allowable bearing capacity for this footing for a factor of safety of 3 AND what is the maximum allowable column load the footing can safely support based on this factor of safety?A rectangular combined footing 8 ft * 20 ft is founded at a depth of 6 ft on a normally con-solidated sand deposit. The sand deposit is approximately 28 ft thick and overlies sandstone. CPT tests indicate the sand is relatively uniform below the proposed footing depth and theaverage tip resistance is 50 tsf. The total service load carried by the combined footing is480 k. Estimate the settlement of this footing.