A 250mm wide reinforced concrete wall supports a service dead load of 250kN/m and a service load of 175kN/m. Design a suitable footing for the wall on non-aggressive stiff clay that has an ultimate bearing pressure of 600kPa and a factor of safety of 2. For durability f'c = 25MPa and a minimum cover of 50mm. Use kv- 0.15

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A: Given data, Ho=5m α=20°β=100°φ=36°δ=24° we have to calculete the factor of safety against capacity…

Q: A 24 in square concrete column carries a factored compressive load of 900 k and a factoredshear load…

A: Solution: Given Data: compressive load=900 kFactored  shear load=100 kfc=3000 lb/in2fy=60 k/in2

Q: A 3-m 150 mm CHB wall rests on a 600 mm thick concrete footing. The CHB wall weighs 3.3 kN/m² and…

A: Given:- The length of the wall = 3 m  The thickness of the concrete footing is 600 mm The weight of…

Q: 12) Determine the shear capacity, øVe, for a one foot- wide design strip for a solid one-way slab 8…

A: D = Total Depth of slab = 8 in.d = Effective depth of slab = 6.94 in.fc' = 3 ksify = 40 ksi As span…

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Q: During stability check of a retaining wall ,the applied loads usually considered, O Factored

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Q: If the allowable stresses are: 6t=165M, 5c = 100Mpa, T=701 Pa determinet max. value of c. KN Ans.…

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Q: Compute soil pressure, factor of safety for sliding and overturning for the retaining wall shown.…

A: The given values are as follows,The weight of concrete=150pcfThe weight of earth =110pcfThe…

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Q: A double cantilever beam 25 m long is supported 6m from the ends. Section is 300mm x 750mm. It is to…

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Q: .(c) A brick masonry wall of size 450mm is carrying a load 120 kN/m. Find the depth of a RCC strip…

A: Solution: Given: Load carried by wall = 120 kN/m Size of the wall = 450 mm Depth of foundation =…

Q: 1 The two-way slabs system (6.1*6.1 m) shown in Figure below subjected to a live load of 2 kN/m' and…

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Q: A 2.2 m wide x 0.47 m thick RC footing is to be provided for a 250mm thick RC wall. The wall carries…

A: Answer  Let us first draw the diagram of RC wall footing based on the given data Calculation of…

Q: Find the collapse load in support moment capacities are the same as the midspan moment capacities in…

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Q: A 3-m 150 mm CHB wall rests on a 600 mm thick concrete footing. The CHB wall weighs 3.3 kN/m2 and…

A: The bearing capacity of soil is defined as the capacity of the soil which will bear the loads or we…

Q: A column carrying an axial load of 3000 kN has a base plate 0.75 m X 1m and transmits its loads to…

A:

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: oncrete deck supported by five prestressed concrete I beams spaced at 5.2 m. The deck is 480 mm…

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Q: The standard acceptable 28-day compressive strength of 150mm concrete masonry hollow units in MPa…

A: The standard acceptable 28-day compressive strength of 150mm concrete masonry hollow units is 8 MPa.

Q: A concrete one-way slab has a total thickness of 100mm.The slab will be reinforced with 10 mm…

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Q: 13-7 A long strip footing 1.25 m wide is used to sup- port the perimeter masonry bearing walls for a…

A: The given data is shown below:

Q: A rectangular spread oting supports supporting a service dead load of 1800 kN and a service live…

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Q: A 500 mm wall supports a dead load of 800 KN/m and live load of 780 KN/m and a horizontal dead load…

A: Given Data:500mm wallD.L =800KN/mL.L=780kN/mHorizontal D.L=15kN/m                   L.L=20kN/msoil…

Q: A 1.4 m wide x 0.39 m thick RC footing is to be provided for a 0.22m thick RC wall. Use f'c = 22 MPa…

A: A) Given data ; Size of footing = 1.4 m X 0.39 m RC wall thickness = 0.22 m unit weight = 24.9 kN/m3…

Q: Square footing over sandy soil with gall = 224.7 kPa and soil unit weight is of 18 kN/m3 carrying…

A: Following is the given information: Qauowable  =224·7 kpa,           r so,p = 18  knm3          r…

Q: Question 24- At a certain point in the floor of weir, the uplift pressure head due to seepage is 5.4…

A: Given- Pressure head h=5.4 m, Relative density G=2.8, It is needed to find the minimum thickness of…

Q: Design a lintel over an opening of 3.5 m. The lintel is made in a wall 400 mm thick. The linte nas…

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Q: The proposed design of a cantilever retaining wall is shown in Figure 1. The unit weight of concrete…

A: Step 1: Step 2: Step 3: Step 4:

Q: PROBLEM NO. 2 Design a one-way slab having a simple span of 3.5 m. The slab is to carry a uniform…

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Q: Problem-4 b, A simply supported prestressed concrete beam is of 20 m span. The initial stress is 100…

A: Given data- A simply supported prestressed concrete beam- Span of the beam L=20 m, Initial stress…

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Q: a total thickness of 450 mm. with a steel covering of 75 mm. The bottom of the footing is 1.2 m.…

A: Given:- dead load = 292 kN/m live load =220kN/m thickness=450mm steel covering =75mm bottom of…

Q: d. 142 Situation #8: A 300mm thick concrete wall is to be centrally located on a footing. The…

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Q: Estimate the required size (width and total depth) of the plain concrete wall footing to carry a…

A: I have solved your problem

Q: A bearing wall for a building is to be located close to a slope. The soil has a unit weight of 15.02…

A: Slope stability is the process of calculating and assessing how much stress a particular slope can…

Q: = In rectangular room is having width,B=4.000m and length, L=5.000m. The thick- ness of deck slab,…

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Q: Design a plain concrete footing to support a 400 mm thick concrete wall. The load on the wall…

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Q: A 500 mm wall supports a dead load of 800 KN/m and live load of 780 KN/m and a horizontal dead load…

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Q: Analyse the cantilever retaining wall to retain soil of earth of height 5.5m above ground level.…

A: The objective of the question is to analyze a cantilever retaining wall that is designed to retain…

Q: Calculate the ratio of the actual soil pressure to net effective pressure. (q/qeff ).

A: The values given in the question are as follows Width of footing(B)=2.8 m The thickness of…

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.