Slopes and soil capacities Flashcards
0
Q
Moderate slope
A
4 to 10%
1
Q
Flat area
good for all activities
A
< 4%
2
Q
Steep, unstable slope
A
10 to 50%
3
Q
Very steep, subject to erosion
A
+ 50%
4
Q
Storm drain slope
A
0.3% minimum
5
Q
Sanitary sewer slope
A
.4% to 1.4%
6
Q
Street surface drainage slope
A
.5% minimum
7
Q
Planted or large pavers slope
A
1% minimum
8
Q
Lawn slope
A
25% maximum
9
Q
Planted banks slope
A
50% max
10
Q
Parking lot slope
A
5% maximum
11
Q
Automobile ramp slope
A
8% maximum
12
Q
Sidewalk slope
A
10% maximum
13
Q
Streets paved driveway slope
A
10% max
14
Q
10,000 PSF
A
Bedrock
