A 1 m square footing is founded at a depth of 1.80 cm on sand (foundation base thickness is 80 cm) and carries a vertical column load of 150 kN. The underlying sand has drained shear strength parameters of '=28°. First, compute the allowable shear load this column can carry using ASD with a sliding factor of safety of 1.1. Next, compute the allowable shear load for the case shear resistance using active and passive earth pressures and without them.

A 1 m square footing is founded at a depth of 1.80 cm on sand (foundation base thickness is 80 cm) and carries a vertical column load of 150 kN. The underlying sand has drained shear strength parameters of '=28°. First, compute the allowable shear load this column can carry using ASD with a sliding factor of safety of 1.1. Next, compute the allowable shear load for the case shear resistance using active and passive earth pressures and without them.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Shallow Foundations-bearing Capacity

Section: Chapter Questions

Problem 16.19CTP: A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a...

See similar textbooks

Related questions

Q: LINE TRIALS NO. OF DANGKAL MEAN DANGKAL FACTOR (m/ ) АВ 1 9.25 ВА 2 8.75 АВ 8.75 ВА 4 9.00 3.

A: Prob 4 Step 1: No. of stations -4 Line – AB, BA, AB, BA

Q: 11. The range of water content between the liquid and plastic limits is termed as: A. liquid limit…

Q: Describe Kozeny-Carman Equation for Permeability.

A: Permeability is the property of soil which allows flow of water through it or it can be defined as…

Q: 2. By the Volume and Area Method, find the quantity of ce- ment, sand and gravel of the concrete…

Q: Following are the results of a shrinkage limit test: Initial volume of soil in a saturated state =…

Q: Which of the following represents hardest grade of bitumen?

Q: The following are the result of shrinkage limit test. Vo (Saturated State) 25.4 cm3 Vf (Dry State)…

A: Given data - Vo ( saturated state ) = 25.4 cm3 Vf (Dry State) = 16.1 cm3 mo (Saturated State) =…

Q: Describe about the Stresses Caused by the Soil Mass.

A: Stresses in a soil mass are essential for its good performance but can be problematic if they exceed…

Q: A concrete floor is constructed of 3 wythes of carbonate concrete that is each 2 inches thick. If…

A: Fire hazard is a serious hazard since fire severely affects the strength of building materials.…

Q: Calculate the maximum. uniform service live load (in kN/m) that can be applied to the beam before…

A: Area of section = b x h = 0.329 x 0.539 Let service load be ws.

Q: Calculate the relative density of cement? Consider the bulk density of cement is 1300 kg/m^3. O a.…

Q: KI-150 md hl=5m K2 60 md h2-10 m K3 300 md h3-7 m The average horizontal permeability? The average…

Q: A concrete cube 0.5 m on each side is to be held in equilibrium under water by attaching a light…

A: Given data : Side of cube = 0. 5m (each) The unit weight of concrete is - 23.8 kN/m3 the unit weight…

Q: B. A volume of one cum of water is subjected to a pressure increase of 14MP.. 1. Compute the change…

A: 1) negative sign represent the decrease in volume

Q: 400 N bag of cement starts from rest and slides 12 m down a roof with a slope of 3 horizontal to 1…

A: Given:- slides =1 2mslope = 3 horizontal to 1 verticalμ=0.20vertical distance = 10m To find:-…

Q: Q1. Using the British method, design a concrete mix to bear an average compressive strength of 20…

A: For sulphate resisting portland cement with uncrushed aggregate, compressive strength at 28 days is…

Q: 14. Calculate the amount of cement required in cumec for 100 sqm DPC of depth 2.5 cm, Grade 1:2:4.

A: given- 100 sqm DPCdepth 2.5 cmGrade 1:2:4

Q: Just choose the correct answer The total volume of concrete slab (m3) 1.4 2.6.5 3.7 4.8 the total…

A: Note: Since we only answer up to 3 subpart we'll answer first 3. Please resubmit a new question…

Q: If given bulk density is 1700kg/m3 and dry density is 1250kg/m3. Determine moisture content? 0.36% O…

A: Given- ydry = 1250 kg/m3 ybulk = 1700 kg/m3 moisture content (w) = ?

Q: An aluminum alloy pipe with an outside diameter of 4.9 in. and a wall thickness of 2/16 in.…

A: Outside diameter = 4.9in wall thickness = 2/16in L = 21ft WA = 12 lb/ft WB = 18 lb/ft It has been…

Q: calculate the volume of the soil solid in ft3.

Q: Class No= 5202 A 500 g sample of sand in the SSD condition was placed in a jar, which was then…

A: Given data- Weight of sand in SSD condition = 500 g Weight of sand and water with jar = (5202+1600)…

Q: A concrete cube 260 mm on each is to be held in equilibrium under water by attaching a Lightweight…

A: given data specific weight of the concrete and foam are 23.875 kNm3 and 0.55 N/m3, respectively…

Q: Homework 1: Information on the 10-year storm on a given area is as follows: T, min. 10 20 30 60 P,…

A: Using rational formula to calculate the flow, Q = k.C.I.A k = 0.00278 1. For Parking C=0.9 for…

Q: Determine bulk unit weight if dry unit weight 16 KN/m3 water content 0.44

A: We have to determine the value of bulk unit weight if dry unit weight of soil is 16 KN/m3 and water…

Q: Calculate the maximum stress at corner if 4600 kg wheel load is applied on cement concrete pavement…

A: Given:- Mass of the wheel load applied on cement concrete pavement = 4600 kg Thickness of the…

Q: Assuming the concrete is uncracked, compute the bending stresses in the extreme fibers of the beam…

A: Answer (1) Calculation of bending stresses in extreme fibres of the beam We know that bending…

Concept explainers

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

Question

Assume gamma=25 kN/m3 for concrete and 21 kN/m3 for the soil

A 1 m square footing is founded at a depth of 1.80 cm on sand (foundation base thickness is 80
cm) and carries a vertical column load of 150 kN. The underlying sand has drained shear strength
parameters of '=28°. First, compute the allowable shear load this column can carry using ASD
with a sliding factor of safety of 1.1. Next, compute the allowable shear load for the case shear
resistance using active and passive earth pressures and without them.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a column load Q. The depth of the footing is 1.0 m. The soil parameters are: c = 0, = 26, = 19 kN/m3, and cu = 60 kN/m2. Determine the maximum possible value for Q, considering short-term and long-term stability of the footing.
A 1 m square footing is founded at a depth of 1.80 m on sand (foundation base thickness is 80cm) and carries a vertical column load of 150 kN. The underlying sand has drained shear strengthparameters of φ’=28°. First, compute the allowable shear load this column can carry using ASDwith a sliding factor of safety of 1.1. Next, compute the allowable shear load for the case shearresistance using active and passive earth pressures and without them.
An isolated footing having dimensions of 1.5m x 2.2m is provided at a depth of 1.2m in a stratum of cohesionless soil having a relative density of 71%. Determine the bearing capacity factors Nc, Nq and Nγ as per IS code.
Problem 6: A strip footing founded on dense sand (p =35° from direct shear tests and ysat-17kN/m³), is to be designed to support a vertical load of 400kN per meter length. Determine a suitable width for this footing for FS=3. The footing is located 1 m below the ground surface. The groundwater level is 10 m below the ground surface. Use Meyerhof Eq. but for shape factors to Use DeBeer and for depth factor to use those proposed by Hansen. (use Yb-15.5kN/m³)
Solving using Eurocode 7, design approach 1, combination 2
A long footing 2 m wide is located in the level area at the top of a long, 45° slope where clay soils exist. The slope height is greater than the footing width. The soil unit weight is 17.5 kN/m3, and the cohesion shear strength is 65 kPa. The D/B ratio is 1, and the b/B ratio is also 1. What loading can be imposed onto the footing per meter of length (using a factor of safety of 3 with the bearing capacity equation appropriate for footings along the top of slopes)?
A strip footing is to be designed to carry a load of 800 kN/m at the depth of 7m in a gravelly sand . the appropriate shear strenght parameter are c =0 and φ=40o. Determine the width of the footing if a factor of safety 3 against shear failure is specified and assuming that that the water table may raise to foundation level.Above the water table the unit weight of the sand is 17 kn/m3 and below the water table the saturated unit weight is 20 kN/m3
i) A strip footing of width B=1m is embedded 0.6m in soil. The soil has unit weight equal to 19kN/m3 and a critical-state friction angle Øc of 32o . Assume water table to be deep, what is the ultimate bearing capacity of the soil? ii) A square footing is to be constructed on a deep deposit of sand at a depth of 0.9 m to carry a design load of 300 kN with a factor of safety of 2.5. The ground water table may rise to the ground level during rainy season. Design the plan dimension of footing given γsat = 20.8 kN/m3 , Nc = 25, Nq = 34 and Nγ =32.
A 2m x 3m footing constructed on a sand deposit (as shown in the Figure below) is subjected to centric vertical loading at a depth of 1.5m below the ground surface. Energy-corrected SPT Noo values from the field are given below. Assume c' = 0, y = 18.5 kN/m, Vat = 19.5 kN/m, %3D Assuming Factor of Safety = 3, compare the gross allowable load for the following scenarios. (a) When the ground water table is located at the ground surface. (b) When the ground water table is located 0.5 m below the ground surface. (c) When the ground water table is located at the base of the footing. (d) When the ground water table is located 1m below the base of the footing. (e) When the ground water table is located 5 m below the base of the footing. Ground water D able Casel D Casell Yaturated unit weight Depth (m) Neo 1.5 3.0 4.5 6.0 10 7.5 10 9.0
A rectangular footing 3m by 4m is founded 1.2m below the ground surface for which the unit weight of soil is 17.8kN/m3. The cohesion strength is 10kPa and the angle of internal friction is 20degrees. Under the condition of general failure, evaluate the contribution from the following to the ultimate soil bearing capacity in kPa. The ground water table is at a level that does not affect the unit weight of the soil. Use Terzaghi’s bearing capacity factor. For Ø=20degrees: Nc = 17.69, Nq = 7.44, Ny = 3.64. 23. Due to Cohesion Strength Due to soil overburden Due to footing dimension
(a) Determine the wall loading that can be carried by a long footing 1 m wide and located 1.5 m below the ground surface. Strength tests indicate that the soil has a cohesion of 58 kN/m2 and an angle of internal friction of20°. The total soil unit weight is 18 kN/m3. The soil above the footing is well compacted, and the depth factors will apply. The soil rigidity index is greater than the critical index. The water table is expected to rise to the ground surface. Use a factor of safety equal to 3 with the extended general bearing capacity equation.(b) Recalculate the design bearing capacity assuming the depth factors do not apply. What percentage change in bearing capacity does this represent (compared to the answer in part a)?(c) Recalculate the bearing capacity for the conditions of part a but where the water table is very deep.
A strip footing 2.5 m wide is to be constructed at a depth of 3m below ground level. The shear strength parameters to be used in design being c|= 65kN/m2 and ø| = 34°. The unit weight of the soil above water table is 18kN/m3 , and below the water table the saturated unit weight is 20kN/m3. a. If the water table is well below foundation level b. If the water table is at the surface.