Sustainable Energy
1st Edition
ISBN: 9781133108689
Author: Richard A. Dunlap
Publisher: Cengage Learning
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Chapter 1, Problem 4P
One gram of methane is burned, and the heat is used to raise the temperature of 1 kg of water. If the initial temperature of the water is 25°C, what is the final temperature?
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Question 3 (15pt) A traffic signal control is being designed for a four-leg intersection on a
divided highway with the characteristics show in the table below. Determine an appropriate
length of the yellow interval for each approach. (assuming the average vehicle length is 20ft,
and the perception-reaction time is 1.0 sec, and deceleration rate of 11.2ft/sec²)
Median width (ft)
Number of 12ft lanes on
each approach
Design speed (mph)
Grade
North South approaches East West Approaches
18
3
45
0
10
2
35
3.5
SPEED
LIMIT
45
18ft
SPEED
LIMIT
45
5
Hi! Can you help me compute the concrete and masonry works for this structure based on the attached elevation drawing?The image shows the side view of a small building with labeled sections, wall openings (windows), and dimensions in centimeters.
Specifically, I need help computing the following:
For Concrete Works:
Volume of concrete for footings, columns, and slab (if applicable)
For Masonry Works (CHB Walls):
Total wall area (excluding window openings)
Number of CHBs required (based on 0.4 m x 0.2 m CHB)
Cement and sand for block laying
Cement, sand, and gravel for core filling (if reinforced)
Cement and fine sand for plastering (both sides)
Rebars needed for CHB reinforcement (if any)
Please base it on the drawing dimensions. Let me know if additional assumptions or standards are needed (e.g., CHB size, mix ratio, thickness of plaster). Thank you!
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- Q2/ In a design of a portable sprinkler system, the following information is given: • • The sprinklers are distributed in a square pattern with radius of the wetted circle of the sprinkler=15 m Consumption rate = 10 mm/day Efficiency of irrigation = 60% Net depth of irrigation (NDI)= 80 mm. Find the following: 1-Sprinkler application rate if HRS = 11. 2-Number of pipes required for irrigation. (50 Marks) 3-Discharge of sprinkler, diameter of nozzle, and the working head pressure if C=0.90. 4-Diameter of the sprinkler pipe for Slope=0. 5-Pressure head at the inlet and at the dead end of the sprinkler pipe for Slope=0. (F² + L²)((SF)² + L²) L² 2L² ≤ D² L² + S² ≤ D² A, = * 1000 S*L ≤D² N W Af m-11-P L' Hf = 1.14*109 * 1.852 * L *F,where c=120 D4.87 Source main pipe 180 m 540 m N 1 1 √m-1 F = im/Nm+1 = + + m+1 2N 6N2 i=1 Nozzle diameter (mm) 3< ds 4.8 4.8< ds 6.4 6.4arrow_forwardMiniatry of Higher scent Research University of Ke Faculty of Engineering Cell Engineering Department 2024-2025 Mid Exam-1 st Attempt Time Date: 17/04/2025 Notes: Answer all questions. Not all figures are to scale. Assume any values if you need them. Q1/ A farm with dimensions and slopes (50 Marks) = shown in the figure below. If you asked to design a border irrigation system and if you know that Net depth of irrigation - 96mm .Manning coefficient = 0.15, Time of work in the farm is 6 hours/day. Design consumption use of water from the crop (ET) 16 mm/day, Width of the agricultural machine equal to 2.5m, Equation of infiltration - D= 12-05 and Efficiency of irrigation= 60%. You can neglect the recession lag time. Find the width and number of the borders, Irrigation interval and time required to irrigate the whole farm, Depth of flow in the inlet of border Number of borders that irrigated in one day and The neglected recession lag time Slope of irrigation % Maximum border width 0-0.1 30…arrow_forwardPLease make sure to show all work and all steps for the image find the magnitude and stressesarrow_forwardShowing all work and steps find the magnituded and stress ,arrow_forwardWhat is the value of the influence line for the reaction at support A for the beam shown at 5 m to the right of A? Select the reaction at support B to be the redundant. a. 0 kN b. -0.167 kN c. 0.425 kN d. 1.0 kNarrow_forwardDetermine the force in member AB of the truss shown due to a temperature drop of 25°C in Members AB, BC, and CD and a temperature increase of 60°C in member EF. Use the method of consistent deformations. a. 37.34 k b. 0 k c. 28 k d. 46.67 karrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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