Call StormTech at
860.529.8188
or
888.892.2694
or visit our website at
www.stormtech.com
for technical and product information.
19
4.0 Foundations for Chambers
Cover
Hgt. ft.
(m)
Minimum Required Bearing Resistance for Service Loads ksf (kPa)
3.0
(144)
2.9
(139)
2.8
(134)
2.7
(129)
2.6
(124)
2.5
(120)
2.4
(115)
2.3
(110)
2.2
(105)
2.1
(101)
2.0
(96)
1.5
(0.46)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
2.0
(0.61)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
2.5
(0.76)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
3.0
(0.91)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
3.5
(1.07)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
12
(300)
4.0
(1.22)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
4.5
(1.37)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
5.0
(1.52)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
5.5
(1.68)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
12
(300)
6.0
(1.83)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
6.5
(1.98)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
7.0
(2.13)
6
(150)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
7.5
(2.30)
6
(150)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
8.0
(2.44)
6
(150)
6
(150)
6
(150)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
15
(375)
NOTE: The design engineer is solely responsible for assessing the bearing resistance (allowable
bearing capacity) of the subgrade soils and determining the depth of foundation stone. Subgrade
bearing resistance should be assessed with consideration for the range of soil moisture conditions
expected under a stormwater system.
NOTE: The design engineer is solely responsible for assessing the bearing resistance (allowable bearing capacity) of the subgrade soils and
determining the depth of foundation stone. Subgrade bearing resistance should be assessed with consideration for the range of soil moisture
conditions expected under a stormwater system.
TABLE 3 - SC-310-3 Minimum Required Foundation Depth in inches (millimeters)
Cover
Hgt. ft.
(m)
Minimum Required Bearing Resistance for Service Loads ksf (kPa)
4.1
(196)
4.0
(192)
3.9
(187)
3.8
(182)
3.7
(177)
3.6
(172)
3.5
(168)
3.4
(163)
3.3
(158)
3.2
(153)
3.1
(148)
3.0
(144)
2.9
(139)
2.8
(134)
2.7
(129)
2.6
(124)
2.5
(120)
2.4
(115)
2.3
(110)
2.2
(105)
2.1
(101)
2.0
(96)
8.5
(2.59)
9
(230)
9
(230)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
24
(600)
24
(600)
27
(675)
30
(750)
9.0
(2.74)
9
(230)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
21
(550)
24
(600)
24
(600)
27
(675)
30
(750)
9.5
(2.90)
9
(230)
9
(230)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
21
(550)
24
(600)
24
(600)
27
(675)
30
(750)
33
(825)
10.0
(3.05)
9
(230)
9
(230)
12
(300)
12
(300)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
21
(550)
24
(600)
24
(600)
27
(675)
30
(750)
33
(825)
36
(900)
10.5
(3.20)
9
(230)
12
(300)
12
(300)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
21
(550)
24
(600)
24
(600)
27
(675)
30
(750)
30
(750)
33
(825)
36
(900)
11.0
(3.35)
12
(300)
12
(300)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
21
(550)
24
(600)
24
(600)
27
(675)
27
(675)
30
(750)
33
(825)
36
(900)
39
(975)
11.5
(3.50)
12
(300)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
21
(550)
24
(600)
24
(600)
27
(675)
27
(675)
30
(750)
33
(825)
36
(900)
39
(975)
42
(1050)
12.0
(3.66)
12
(300)
12
(300)
12
(300)
15
(375)
15
(375)
15
(375)
15
(375)
18
(450)
18
(450)
18
(450)
21
(550)
21
(550)
21
(550)
24
(600)
24
(600)
27
(675)
30
(750)
30
(750)
33
(825)
36
(900)
39
(975)
42
(1050)
Table 4 – DC-780 Minimum Required Foundation Depth in inches (millimeters)
Summary of Contents for StormTech DC-780
Page 2: ...An company TOOL 2 0 DESIGN ...
Page 39: ......