STRUCTURAL ANALYSIS (LL)
6th Edition
ISBN: 9780357030967
Author: KASSIMALI
Publisher: CENGAGE L
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Chapter B, Problem 5P
To determine
Prove that
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1. For the foundation shown below:
Qapp = 60 kips
(Load obtained from
structural engineer)
1.5 ft
G.W.T.
3 ft
Poorly Graded Sand (SP):
Ym
115 pcf (above G.W.T.)
Ysat 125 pcf (below G.W.T.)
c' = 0, ' = 35°
K
Square footing, 4' x 4'
Foundation Dimension Information:
1-ft x 1-ft square concrete column.
1-ft thick "foot" flanges.
Yconc=150 pcf
*Assume weight of reinforcing steel
included in unit weight of concrete.
*Assume compacted backfill
weighs the same as in-situ soil.
Assume this foundation is being designed for a warehouse that had a thorough preliminary soil
exploration. Using the general bearing capacity equation:
a. Calculate the gross applied bearing pressure, the gross ultimate bearing pressure, and
determine if the foundation system is safe using a gross bearing capacity ASD
approach. Please include the weight of the foundation, the weight of the backfill soil,
and the effect of the uplift pressure caused by the presence of the water table in your
bearing capacity…
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Refer to the figure below. Given: L = 7 m, y = 16.7 kN/m², and ø' = 30°.
L
L3
ση
Sand
γ
$'
D
T
LA
L
σε
σε
IN
P
Sand
1. Calculate the theoretical depth of penetration, D.
(Enter your answer to three significant figures.)
D=
m
2. Calculate the maximum moment.
(Enter your answer to three significant figures.)
Mmax
kN-m/m
Chapter B Solutions
STRUCTURAL ANALYSIS (LL)
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- A 2.0 m wide strip foundation carries a wall load of 350 kN/m in a clayey soil where y = 15 kN/m³, c' = 5.0 kN/m² and ' = 23°. The foundation depth is 1.5 m. For ' = 23°: Nc = 18.05; N₁ = 8.66; Ny = = = 8.20. Determine the factor of safety using the equation below. qu= c' NcFcs FcdFci+qNqFqsFq 1 F + gd. 'qi 2 ·BN√· FF γί Ysyd F (Enter your answer to three significant figures.) FS =arrow_forward2P -1.8 m- -1.8 m- -B Wo P -1.8 m- Carrow_forwardPart F: Progressive activity week 7 Q.F1 Pick the rural location of a project site in Victoria, and its catchment area-not bigger than 25 sqkm, and given the below information, determine the rainfall intensity for ARI 5, 50, 100 year storm event. Show all the details of the procedure. Each student must propose different length of streams and elevations. Use fig below as a sample only. Pt. E-nt 950 200 P: D-40, PC-92.0 300m 300m 000m PL.-02.0 500m HI-MAGO PLA-M 91.00 To be deemed satisfactory the solution must include: Q.F1.1.Choice of catchment location Q.F1.2. A sketch displaying length of stream and elevation Q.F1.3. Catchment's IFD obtained from the Buro of Metheorology for specified ARI Q.F1.4.Calculation of the time of concentration-this must include a detailed determination of the equivalent slope. Q.F1.5.Use must be made of the Bransby-Williams method for the determination of the equivalent slope. Q.F1.6.The graphical display of the estimation of intensities for ARI 5,50, 100…arrow_forward
- I need help finding: -The axial deflection pipe in inches. -The lateral deflection of the beam in inches -The total deflection of the beam like structure in inches ?arrow_forwardA 2.0 m wide strip foundation carries a wall load of 350 kN/m in a clayey soil where y = 17 kN/m³, c' = 5.0 kN/m² and 23°. The foundation depth is 1.5 m. For o' = 23°: Nc = 18.05; N = 8.66; N = 8.20. Determine the factor of safety using the equation below. 1 qu = c' NcFcs Fed Fci +qNqFqs FqdFqi + ½ BN F√s 1 2 (Enter your answer to three significant figures.) s Fyd Fi FS =arrow_forward1.2 m BX B 70 kN.m y = 16 kN/m³ c' = 0 6'-30° Water table Ysat 19 kN/m³ c' 0 &' = 30° A square foundation is shown in the figure above. Use FS = 6, and determine the size of the foundation. Use the Prakash and Saran theory (see equation and figures below). Suppose that F = 450 kN. Qu = BL BL[c′Nc(e)Fcs(e) + qNg(e)Fcs(e) + · 1 YBN(e) F 2 7(e) Fra(e)] (Enter your answer to two significant figures.) B: m Na(e) 60 40- 20- e/B=0 0.1 0.2 0.3 .0.4 0 0 10 20 30 40 Friction angle, ' (deg) Figure 1 Variation of Na(e) with o' Ny(e) 60 40 20 e/B=0 0.3 0.1 0.2 0.4 0 0 10 20 30 40 Friction angle, ' (deg) Figure 2 Variation of Nye) with o'arrow_forward
- K/S 46. (O المهمات الجديدة 0 المنتهية 12 المغـ ۱۱:۰۹ search ليس لديك اي مهمات ☐ ○ ☑arrow_forwardI need help setti if this problem up and solving. I keep doing something wrong.arrow_forward1.0 m (Eccentricity in one direction only)=0.15 m Call 1.5 m x 1.5m Centerline An eccentrically loaded foundation is shown in the figure above. Use FS of 4 and determine the maximum allowable load that the foundation can carry if y = 18 kN/m³ and ' = 35°. Use Meyerhof's effective area method. For '=35°, N = 33.30 and Ny = 48.03. (Enter your answer to three significant figures.) Qall = kNarrow_forward
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