Principles of Foundation Engineering, SI Edition
9th Edition
ISBN: 9781337672085
Author: Das, Braja M., SIVAKUGAN, Nagaratnam
Publisher: Cengage Learning
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Chapter 16, Problem 16.8P
To determine
Find the magnitude and location of the resultant active force on the wall.
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1. The city of Ten Sleep proposes to use Crater Lake for its water supply. Water quality analysis results revealed
no detectable Giardia, viruses, or Cryptosporidium in the source water (Giardia cysts <1/100 L; Viruses
<1/100 L; Cryptosporidium oocysts <0.075/L). Design a disinfection system to treat 3,500 m³/d by direct
filtration and chlorine dioxide (CIO2) will be used as a primary disinfectant. The filtered water has a pH of 7.5
and a temperature of 5°C. Provide the following information for your design:
• Determine the total removal/inactivation required for disinfection for each pathogen group
• Determine the required CT value to achieve the required inactivation for the design conditions (pH,
temperature)
For the beam shown, where is the peak value of the bending moment diagram?
P
a. Above C
b. Below B
c. Above A
d. Above B
B
The plane truss shown is
a. statically indeterminate
b. unstable
c. statically determinate
Chapter 16 Solutions
Principles of Foundation Engineering, SI Edition
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