Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 2, Problem 15P
To determine
Find the amount of
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Q2- For the retaining wall shown in the figure, calculate the magnitude and resultant, of active thrust and
calculate only the magnitude of passive thrust.
q = 10kN/m²
不
2 m
y-18 kN/m³
0=35°
C=0
*
2 m
y=18 kN/m³
0=20°
6 m
C=15 kN/m²
y=18 kN/m³
0-20°
C=15 kN/m²
2
أ. ما هي شروط حديد التسليح المستخدم في موقع العمل بشكل عام وكيف يجب ان يكون ؟
ب. كم حلقة تحتاج لاساس شريطي طوله 40 مترا اذا كان مكتوب في المخطط ( mm 300 @ 010) ؟
B - لمقطع الأساس الشريطي ادناه، احسب كمية الحديد الطولي السفلي والمواد الانشائية المطلوبة ) سمنت ، رمل ، حصى ( لكل 30 متر
طول منه ونسب الخلط 1:3:5 اذا كان حديد التسليح المتوفر طول 9 متر .
(15) درجة )
3014
$10@200mm
4016
800mm
A
400mm
جدول اوزان حديد اتسليح
قطر الشيش (mm) كتلة الشيش (kg/m)
0.222
6
0.395
8
0.617
10
0.888
12
1.21
14
1.58
16
2
18
2.47
20
3.86
25
A4.2- Develop the column interaction diagram for a tied short column, shown in Figure 2.
Given: f'c = 35 MPa
fy = 400 MPa
Longitudinal bars: 8-35M
Ties: 10M@ 300
Clear cover to the ties: 40mm
T
500 mm
500 mm
Figure 2
Chapter 2 Solutions
Sustainable Energy
Ch. 2 - A quantity has a doubling time of 110 years....Ch. 2 - The population of a particular country has a...Ch. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - The total world population in 2012 was about 7...Ch. 2 - The population of a state is 25,600 in the year...Ch. 2 - The population of a country as a function of time...Ch. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11P
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- As shown in the figure below, a 1.5 m × 1.5 m footing is carrying a 400 kN load. P Depth (m) 0.0 1.0 2.0 Df Groundwater table (Yw = 9.81 kN/m³) 3.5 Yt = 16.5 kN/m³ E = 9,000 kPa Sandy soil Ysat 17.5 kN/m³ E = 15,000 kPa 6.0 Stiff Clay (OCR = 2) Bedrock Ysat 18.0 kN/m³ eo = 0.8 Cc = 0.15, Cr = 0.02 Eu =40,000 kPa (a) Estimate the immediate settlement beneath the center of the footing. Assuming that Poisson's ratios of sand and soft clay are 0.3 and 0.5, respectively. Use numerical integration approach. For the calculations, use layers (below the bottom of the footing) of thicknesses: 1 m; 1.5 m, and 2.5 m. (b) Determine the primary consolidation settlement beneath the center of the footing. (c) Redo Part (b) if OCR=1.1. Note: Use the 2:1 method to determine the stress increase below the footing. For parts (b) and (c), use the one-dimensional consolidation theory.arrow_forwardConsider the cross-sections illustrated in the next slides. Implement a cross-sectional analysis based on a layered discretisation of the cross- section as required at the following. 1) Develop the implementation of an analysis to estimate the nonlinear response of the composite steel-concrete section, of the reinforced concrete section and of the steel section shown in following slides (using material nonlinear models provided in the support files). Provide the details of the numerical implementation with clear explanations of all steps. Hint: the implementation can be done in Excel. 2) Discuss how the 3 cross-sections (shown in the next slides) compare to each other in terms of embodied carbon under the condition that the cross-sections possess the same nominal moment capacity (i.e. the peak moment achieved in the moment-curvature diagram). The discussion should include at least 2 sets of the sections (each set contains one composite section, one reinforced concrete section and one…arrow_forwardConsider the following static route choice problem where 110 vehicles travel from point A to point B. The corresponding travel time (in minutes) of each link is as follows: t₁ = x1; t₂ = x2 + 20; t3x3 + 10; t₁ = 3×4 where Xi denotes the number of vehicles that choose link i. Find the number of vehicles that travel on each link when a. The user equilibrium condition (UE) is satisfied, where vehicles select the route with the minimum travel time; and b. The system optimum condition (SO) is satisfied, where the total travel time is minimised. C. Report the total delay savings when satisfying SO instead of UE. 2 B A 3 4arrow_forward
- = α₂+ Assume an origin is connected to a destination with two routes. Assume the travel time of each route has a linear relationship with the traffic flow on the route (t₁ = α₁ + b₁x₁ ; t₂ b2x2). Determine under what condition (e.g. a relationship among the parameters of the performance functions) tolling cannot reduce the total travel time of the two routes.arrow_forwardBeban berjalan pada konstruksi balok seperti pada gambar, tentukan besar gaya dalam yang terjadi dengan metode Garis Pengaruh. Gaya dalam berupa : Reaksi tumpuan RA dan RB, Gaya lintang max di titik C, Momen Maksimum di titik C A + Dimana: B D 10 5 m 5 m P1 = 12t P2 = 6t P3 = 18t q= 6 t/m 2 3 q = 6 t/m P1 P2 P3arrow_forwardConsider the following static route choice problem where 110 vehicles travel from point A to point B. The corresponding travel time (in minutes) of each link is as follows: t₁ = x1 ; t₂ = = x2 + 20; t3 = x3 + 10; t₁ = 3x4 where Xi denotes the number of vehicles that choose link i. Find the number of vehicles that travel on each link when a. The user equilibrium condition (UE) is satisfied, where vehicles select the route with the minimum travel time; and b. The system optimum condition (SO) is satisfied, where the total travel time is minimised. C. Report the total delay savings when satisfying SO instead of UE. 2 A B 3 4arrow_forward
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