Number of Bedrooms
|
Liquid Capacity of Tank
(gallons)
| |
---|---|---|
2 or fewer
|
750
| |
3
|
900
| |
4
|
1,000
| |
For each additional bedroom, add
|
250
|
Percolation Rate - Time Required For Water
To Fall One Inch
(minutes)
|
Required Absorption Area Per Bedroom,1 Standard Trench2 and Seepage
Pits3
(square feet)
| |
---|---|---|
1 or less
|
70
| |
2
|
85
| |
3
|
100
| |
4
|
115
| |
5
|
125
| |
10
|
165
| |
15
|
190
| |
304
|
250
| |
454
|
300
| |
604,5
|
330
|
NOTES:
|
---|
1 In every case,
sufficient area should be provided for at least two bedrooms.
|
2 Absorption area
for standard trenches is figured as trench bottom area.
|
3 Absorption area
for seepage pits is figured as effective sidewall area beneath the
inlet.
|
4 Unsuitable for
seepage pits if over 30 minutes.
|
5 Unsuitable for
leaching systems if over 60 minutes.
|
18-inch trench
|
6 feet 5 inches, center to center
| |
---|---|---|
24-inch trench
|
7 feet, center to center
| |
36-inch trench
|
8 feet, center to center
|
Percolation test
| ||
---|---|---|
1 to 4 minutes
|
18 inches
| |
5 to 9 minutes
|
24 inches
| |
10 to 60 minutes
|
36 inches
|