A strip footing 2m wide carries a load intensity of 400 kN/m2at a depth of 1.2 m in sand. The saturated unit weight of sand is 19.5 kN/m3 and unit weight above water table is 16.8 kN/m3. The shear strength parameters are C=0 and Ф = 350 . Determine the factor of safety with respect to shear failure for the following cases of location of water table :(a) Water table is 4m below G.L(b) Water table is 1.2 m below G.L(c) Water table is 2.5 m below G.L(d) Water table is 0.5 m below G.L(e) Water table is G.L itself

Q: 10.6

A: Given data:The length of the foundation is 20 m.The breadth of the foundation is 15 m.The cohesion…

Q: A rectangular footing is uniformly loaded with q = 75 kN/m² as shown in the figure. Compute the…

A: Given: q= 75KN/m2 and z= 5m

Q: 17.6 Refer to Problem 17.5 and Figure 17.15. Suppose a footing (2 m × 2 m) is constructed at a depth…

A: Obtain the values of N60 and γ from the given bore log at the depth of 1.5mN60=8 and γ=18…

Q: A square footing is shown is the following figure. Assume the induced stress, Ao,, due to load from…

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Q: A square footing which carries an axial load of 13000 kg has its bottom resting on a ground water…

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Q: A square column foundation is to be constructed on a sand deposit (C = 0). The allowable load Q will…

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Q: Lane's Theory Q.1) By using Lane's theory, and assuming: • Drop, in water level, Z 3.6 m • Water…

A: NOTE: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…

Q: A continues foundation with B=2.3m on a deposit of dense sand layer shown with diagram of E, which…

A: Given data Load intensity q=145 kN/m2 Considering the Strain influence method so Settlement, s…

Q: A square footing of 2 m side is subjected to a vertical load of 2000 kN. Assuming load dispersion as…

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Q: square footing 3 m x 3 m is supporting an axial load of 650 kN. The weight of the soil is aasumed to…

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Q: Q1- Use Rankıne theory to calculate the lateral earth pressure and determine the stabilıty of the…

A: Solution: For lateral earth pressure: Kac=cos2ϕ - ηcos2ϕ - ηcosη+δ1+sinϕ+δsinη-βcosη+δcosη-β1/22sub;…

Q: square footing 3 m x 3 m is supporting an axial load of 650 kN. The weight of the soil is aasumed to…

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Q: 2. Determine the depth at which a circular footing of (2+0.4Y)m diameter be founded to provide a…

A: For given angle of shearing resistance, we get

Q: A long masonry wall footing carries a uniformly distributed load of 200 kN/m2. If the width of the…

A: Part - a - below the centre From the above triangle -  tanα2 = 23⇒α = 2×tan-123⇒α = 67.38°

Q: Using Terzaghi's equation calculate the bearing capacity of cohesionless soil having unit weight of…

A: Given data unit weight=124lb/ft3 width=4ft depth=5ft internal frictional angle=33o FOS=2.5

Q: A rectangular footing of 1.5x2.0 m on stiff clay (0= 0) is subjected to an inclined load as shown in…

A: Rectangular footing,L = length of footing = 2.0 mB = Width o footing = 1.5 mDf = Depth of footing =…

Q: ompute the total vertical stress incre

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Q: Q8) For the rectangular footing shown in Fig. (8), find the footing dimensions (BxL) for which the…

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Q: A loaded footing ABCD with q = 200 kN/m² on the ground is shown in Figure 8.19. Compute Ao, under…

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Q: A footing 2m x lm exerts a uniform pressure of 150 kN/m? on the soil. Assuming a load dispersion of…

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Q: A 1.5 m square footing carries a column with a service load of 105 kN. It is founded at a depthof 2…

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Q: A strip footing (8 m wide) is designed for a total settlement of 40 mm. The safe bearing capacity…

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Q: A footing 2.50 m x 2.50 m is located at a depth of 1.5 m in sand. The shear strength parameters to…

A: The ultimate bearing capacity is the maximum possible load that can be supported without failure…

Q: Q/ for the circular footing 5m diameter . find the thickness of footing if (factor of safety = 3) .…

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Q: Refer to figure below of a combined footing P2 a 35. If Pi = 1200 kN, P2 = 800 kN, b = 6, and c = 3,…

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Q: 6.2 Three footings are placed at locations forming an equilateral triangle of 13 ft sides. Each of…

A: Given, Q = 112.4 cips Depth, Z = 9 ft Vertically below footings As the triangle is equilateral, the…

Q: Question Attached

A: Given  allowable load Qs =30000 *9.81=294.3 KN qs=(294.3*103)/B2 Where B= side of square footing…

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Q: A circular (0.8 m diameter) footing with q = 50 kN/m² is placed on the ground surface. Compute and…

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Q: A footing 2 m x 3 m in size transmits a bearing pressure of 140 kN/m2 on a soil having E= 5 × 104…

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Q: A square footing of size 13 x 13 ft founded on the surface carries a distributed load of…

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A: Given data:

Q: Wall dimensions: H = 7 m, X, = 0.55 m, X, = 0.75 m, X, = 1.2 m, X, = 2.1 m, X, = 0.7 m, D = 1 m Soil…

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Q: A 6 m x 9 m rectangular footing xarrying a uniform of 288 kPa is applied to the ground surface..…

A: ASKED: To determine the total vertical stress below the center of the rectangular footing at the…

Q: A footing 2m square is located a depth of 4m in a stiff clay of saturated unit weight 21kN/m3. The…

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Q: A square footing of 2 m side is subjected to a vertical load of 2000 kN. Assuming load dispersion as…

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Q: es induced by the footing on the mid thickness of each layer using both 2-1 approximation and…

A: Solution: As per you asked solution of question 2:

Q: Problem 5: A square column footing 2 m X 2 m is shown below. a) Determine the average increase of…

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Q: The footing of a wall is 1.5 m wide at the base and is located in a homogeneous cohesive soil at a…

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Q: A footing 3 m square carries a gross pressure of 350 kN/m2 at a depth of 1.2 m in sand. The…

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Q: Q2: by using Terzaghi equation for strip footing shown in Figure below find the following if F.S=3:

A: In Terzaghi's analysis the soil is homogeneous and isotropic and its shear strength is represented…

Q: A square column foundation is to be constructed on a sand deposit (C = 0). The allowable load Q will…

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Q: Under the corner at point C Under the center D. If another footing of size 3 x 1 m with a total load…

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Q: A 2 m wide strip footing is located at a depth of 2 m in a stiff clay of saturated unit weight of 20…

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Q: 'A rectangular footing 3m x 4m carries a column load of 800kN at a depth of 1.6m. The footing rests…

A: The given data is shown below: Size of rectangular footing=3m×4mLoad on column=800 kNDepth=1.6…

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.