Cheat Sheet 1 (I) Flashcards
1
Q
What is the minimum distance from the edge of the trench that a spoil pile should be placed
A
2 feet
2
Q
How many ladders are required in a trench 4 feet deep 100 feet long
A
Two
3
Q
What type of pump is used to pump water into a system
A
Centrifugal Pump
4
Q
What is static head
A
Pressure due to depth of elevation of water
5
Q
What is hydrostatic pressure testing used for in new mains
A
Leaks on newly installed mains
6
Q
Florida drinking water include man contaminant levels except for?
A
Color contaminants
7
Q
What does the 1991 coliform rule require
A
95% of samples must be free of colliform
8
Q
What affects chlorine disinfection properties
A
Temperature
9
Q
When is chlorine most effective?
A
Around a ph of 7
10
Q
What’s is the minimum feet per second a water main should be flushed
A
2.5 feet per second
