A spread footing supported on a sandy soil has been designed using ASD to support a certaincolumn load with a factor of safety of 2.5 against a bearing capacity failure. However, there issome uncertainty in both the column load, P, and the friction angle, f. Which would have thegreatest impact on the actual factor of safety: an actual P that is twice the design value, or actualf that is half the design value? Use bearing capacity computations with reasonable assumedvalues to demonstrate the reason for your response.

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A: The FBD of the given problem can be drawn as shown below: the internal normal force, shear force, a...

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Q: A solid 45 mm diameter beryllium copper (E = 131 GPa; a = 17.0 x 10-6 /"C) rod is stress free when s...

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Q: Given data : Mass=3 kg height=3 m g=10 m/s2 Determine potential energy

A: Given Mass=3kg Height=3m g=10m/s2 We know that potential energy=m*g*h=3*10*3                      =9...

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A: On plotting the given data:

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Q: The circular tube with the cross section shown is subjected to the axial force P and bending moment ...

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Q: 1- The disk is moving to the left such that it has an angular acceleration a = 8 rad/s and angular v...

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Q: Determine the force in each member of the TruSs shown in the figure and indicate whether the members...

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Q: Given data : Mass=3 kg height=3 m g=10 m/s2 Determine potential energy

A: Introduction : The question related with mechanics . In this question we have to determine the value...

Q: The T-beam has an effective flange width of 806 mm and the thickness is 108 mm. If the area of the c...

A: Given data: Effective width of flange bf = 806 mm Thickness of flange t = 108 mm Area of compression...

Q: PROBLEM 1(USING CONJUGATE BEAM METHOD) DETERMINE THE DEFLECTION AT POINTS B AND D 2.5 k/ft Hinge 35 ...

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Q: I The 45 degree strain rosette is mounted on a steel shaft. The following readings are obtained from...

A: Step 1: Normal strain: 400 x 10-6 = 700 x 10-6 x cos245º - 350 x 10-6 sin245º +φ Φ =225 x 10-6  

Q: Absolute value of bending torque Max = ? kNm Width of the web (integer) = ? mm

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Q: 7-7. Determine the equations of the elastic curve for the beam using the x and x2 coordinates. Speci...

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Q: A truss is loaded as shown in the figure. The cross- sectional area of each member is 500 mm^2. Hint...

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Q: State any four safety related acts and regulations to be observed when carrying out underground work...

A: Underground works: Drilling, blasting, guniting, rock bolting, and soft soil work are examples of su...

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Q: A confined aquifer underlies an unconfined aquifer as shown in the illustration below. Given the fol...

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Q: Given the following principal stresses and principal direction: ox = 27 MP Pa, txy = 6 MPa, Determin...

A: Radius of the circleR=(σx-σy2)2+τxy2R=(27-152)2+62R=8.485 MPAσAVG=σx+σy2=27+152σAVG=21mpaσ1=21+8.485...

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Q: Given the beam below in kN-m?

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Q: 7. The liquid in Fig. D has a specific gravity of 1.50. The gas pressure is P= +5.xy lb per sq in. a...

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Q: A solid 45 mm diameter beryllium copper (E = 131 GPa; α = 17.0 × 10−6 /°C) rod is stress free when s...

A: Find maximum temperature increase?

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Q: Given an element with stresses as indicated in the figure below, use method of the Pole (only) to fi...

A: The given values are as follows,σx=20KPA(tension)σy=100KPacompressionτxy=35KPa

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Q: For a wastewater sample, the three-day biochemical oxygen demand at incubation temperature of 20°C (...

A: Solution: Given- k=0.22mg/l , T1 = 5days, T2=3 days, BOD3 = 200mg/l  

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Q: A C8x11.5 single channel section us bolted to a gusset plate with M22 bolts. Assume A36 steel, 5.6 m...

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Q: A 5º73' simple curve having a central angle of 57037' is situated along the steep side of Mount Krok...

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

Q: W1 W2 B C. X1 X2 X3 X4 Given: X1 = m X2 = 3 X3 = 2.5 m X4 = 6. P- 15 kN 28 kN/m 28 kN/m E - 250 GPa ...

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Q: The wall thickness of a 4-ft-diameter spherical tank is 5/6 inch. Calculate the allowable internal p...

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Q: Situation 2: 4-5 A rectangular bar 50 mm x 75 mm in cross-section is subjected to a tensile force P ...

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Q: FOR ALL PROBLEMS, DETERMINE THE AFD, SFD, AND BMD MAKING SURE To SHOW AL WORK REQUIRED To OBTAIN EAC...

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Q: 05. You have the ½h-UH due to 1 cm effective rainfall. Time (hours) ¼h - UH (m/s) 0.5 60 1.0 150 1.5...

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Q: e) Given the household and demographic data presented in Table 1, calculate the total number of AM P...

A: Calculate the value of TA , and TP by using formula as given as, TA=1500+8.5I+0.15A0+0.05ARTP=0.4V+0...

Q: Determine the shear reinforcement spacing of the beam shown within and beyond 2h from the support us...

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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.