EBK FUNDAMENTALS OF CONSTRUCTION ESTIMA
4th Edition
ISBN: 8220106748305
Author: Pratt
Publisher: CENGAGE L
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Chapter 3, Problem 18RQ
To determine
To calculate volume for given pyramid dimensions.
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For the gravity concrete dam shown in the figure, the following data are available:
Unit weight of concrete (y)-2.4 ton/m
Neglect Wave pressure, silt pressure, ice force and earth quake force)
-0.65, (7)-1 ton/m
Find factor of safety against sliding and overturning (F.Sa & FS), If heel and toe stresses (Pa &
Pen) are 57.17ton/m² and 84.53 ton/m² respectively.
w.s.l
83m
Solve and sketch on paper
10m
80m
8m
Need assistance with d.
2. A series of gears are mounted on a 40mm diameter steel shaft. Take G = 75 GPa.
(i) Draw the torque load diagram.
(ii) Determine the angle of twist of gear B relative to gear A.
(iii) Determine the maximum shear stress and it's location along the shaft.
600 N-m
900 N-m
200 mm
200 mm
200 mm
500 Nm
300 N·m
200 mm
500 N-m
Chapter 3 Solutions
EBK FUNDAMENTALS OF CONSTRUCTION ESTIMA
Ch. 3 - What is the objective of a quantity takeoff?Ch. 3 - Why is it recommended that estimators follow a...Ch. 3 - What is the difference between an estimator’s...Ch. 3 - Prob. 4RQCh. 3 - What are the two components that make up a takeoff...Ch. 3 - In what order are dimensions entered onto the...Ch. 3 - Why should a figured dimension be used in...Ch. 3 - Why should an estimator include headings and side...Ch. 3 - The cost of transportation of materials has to be...Ch. 3 - What level of accuracy should the estimator pursue...
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- Determine the required solids retention time (SRT) of a completely mixed activated sludge aeration tank for a conventional activated sludge system treating a design flow rate of 34,560 m³/d, where the effluent standards are 30.0 mg/L for BODs and 30.0 mg/L for total suspended solids (TSS). Assume that the BOD5 of the effluent TSS is 70% of the TSS concentration. Assume the BODs concentration leaving the primary clarifier is 128 mg/L that the MLVSS concentration (X₂) is 2,500 mg/L. Assume the following values for the growth constants: Ks 100 mg/L BODS ⚫ Hm - 2.5 d 1 kd = 0.050 d 1 Y = 0.50 mg VSS/mg BODs removed Express your answer in days and round to the nearest 0.1.arrow_forwardFor the gravity concrete dam shown in the figure, the following data are available: Unit weight of concrete (7)-2.4 ton/m Neglect Wave pressure, silt pressure, ice force and earth quake force) -0.65, (7)-1 ton/m' Solve on paper and sketch Find factor of safety against sliding and overturning (F.Sa & F.S), If heel and toe stresses (Pain & P) are 57.17ton/m2 and 84.53 ton/m² respectively. Solve in table on paper w.s.l 83m 10m 8m 80marrow_forward1. Find moments of inertia around horizontal and vertical centroid axes for given 6 cross sections. 30cm 4) "T 0cm 1116 5) 20cm 5cm 6)arrow_forward
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