Square
Mesh Sieves
|
Percent Passing
by Weight
|
---|---|
3/4-inch
|
100
|
1/4-inch
|
30 to 65
|
No. 40
|
5 to 30
|
No. 100
|
0 to 10
|
Square
Mesh Sieves
|
Percent Passing
by Weight
|
---|---|
3 1/2-inch
|
100
|
1/4-inch
|
30 to 65
|
No. 40
|
5 to 30
|
No. 100
|
0 to 10
|
L
|
=
|
SD/P
| |
133,200
| |||
Where:
| |||
L
|
=
|
allowable leakage in gallons per ur. ho
| |
S
|
=
|
length of pipe tested.
| |
D .
|
=
|
nominal diameter of pipe inches
| |
P
|
=
|
average test pressure during leakage test in
pounds-per-square-inch gauge.
|