Storm sewer summary
Last updated: 2025-05-09
Names and rules
|
SSPC |
STORM SEWER PIPE COMPOSITE |
|
SSPRC |
STORM SEWER PIPE REINFORCED CONCRETE |
|
SSPNRC |
STORM SEWER PIPE NONREINFORCED CONCRETE |
|
SSPRCHE |
STORM SEWER PIPE REINFORCED CONCRETE HORIZONTAL ELLIPTICAL |
| Name | Rules |
|---|---|
|
SSPC 6-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPC 8-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPC 10-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPC 12-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPC 15-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
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SSPRC CLASS II 12-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS II 15-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS II 18-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS II 21-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS II 24-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS II 27-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS II 30-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS II 36-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS II 42-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS II 48-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS II 54-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS II 60-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 66-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 72-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 78-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 84-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 90-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 96-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 102-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS II 108-INCH |
Cover and Slope: 1-11 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 12-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS III 15-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS III 18-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS III 21-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS III 24-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS III 27-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS III 30-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS III 36-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS III 42-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS III 48-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS III 54-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS III 60-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 66-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 72-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 78-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 84-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 90-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 96-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 102-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS III 108-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS IV 12-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS IV 15-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS IV 18-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS IV 21-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS IV 24-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRC CLASS IV 27-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS IV 30-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS IV 36-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRC CLASS IV 42-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS IV 48-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS IV 54-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRC CLASS IV 60-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS IV 66-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS IV 72-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS IV 78-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS IV 84-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRC CLASS V 12-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 350 FT |
|
SSPRC CLASS V 15-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 350 FT |
|
SSPRC CLASS V 18-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 350 FT |
|
SSPRC CLASS V 21-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 350 FT |
|
SSPRC CLASS V 24-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 350 FT |
|
SSPRC CLASS V 27-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 400 FT |
|
SSPRC CLASS V 30-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 400 FT |
|
SSPRC CLASS V 36-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 400 FT |
|
SSPRC CLASS V 42-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 500 FT |
|
SSPRC CLASS V 48-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 500 FT |
|
SSPRC CLASS V 54-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 500 FT |
|
SSPRC CLASS V 60-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 1000 FT |
|
SSPRC CLASS V 66-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 1000 FT |
|
SSPRC CLASS V 72-INCH |
Cover and Slope: 1-35 FT Slope: 0.3-10% Max Length: 1000 FT |
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SSPNRC CLASS 3 6-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 8-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 10-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 12-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 15-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 18-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 21-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 24-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPNRC CLASS 3 30-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPNRC CLASS 3 36-INCH |
Cover and Slope: 6-10 FT Slope: 0.3 - 10% Max Length: 400 FT |
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SSPRCHE CLASS HE-III 14x23-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRCHE CLASS HE-III 19x30-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRCHE CLASS HE-III 24x38-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRCHE CLASS HE-III 29x45-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRCHE CLASS HE-III 34x53-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRCHE CLASS HE-III 38x60-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 500 FT |
|
SSPRCHE CLASS HE-III 43x68-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRCHE CLASS HE-III 48x76-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRCHE CLASS HE-III 53x83-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRCHE CLASS HE-III 58x91-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRCHE CLASS HE-III 63x98-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRCHE CLASS HE-III 68x106-INCH |
Cover and Slope: 1-15 FT Slope: 0.3 - 10% Max Length: 1000 FT |
|
SSPRCHE CLASS HE-IV 14x23-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRCHE CLASS HE-IV 19x30-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 350 FT |
|
SSPRCHE CLASS HE-IV 24x38-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRCHE CLASS HE-IV 29x45-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 400 FT |
|
SSPRCHE CLASS HE-IV 34x53-INCH |
Cover and Slope: 1-25 FT Slope: 0.3 - 10% Max Length: 500 FT |
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CATCH BASINS 3-FT |
Max Dia: 1.25 FT Sump: 2 FT |
|
CATCH BASINS 4-FT |
Max Dia: 2 FT Sump: 2 FT |
|
CATCH BASINS 5-FT |
Max Dia: 3 FT Sump: 2 FT |
|
CATCH BASINS 6-FT |
Max Dia: 3.5 FT Sump: 2 FT |
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CATCH BASINS 2X3-FT |
Max Dia: 2 FT Sump: 2 FT |
|
CATCH BASINS 2.5X3-FT |
Max Dia: 2 FT Sump: 2 FT |
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|
MANHOLES 3-FT |
Max Dia: 1.25 FT |
|
MANHOLES 4-FT |
Max Dia: 2 FT |
|
MANHOLES 5-FT |
Max Dia: 3 FT |
|
MANHOLES 6-FT |
Max Dia: 3.5 FT |
|
MANHOLES 7-FT |
Max Dia: 4 FT |
|
MANHOLES 8-FT |
Max Dia: 5 FT |
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|
MANHOLES 3x3-FT |
Max Dia: 2 FT |
|
MANHOLES 4x4-FT |
Max Dia: 3.5 FT |
|
MANHOLES 5x5-FT |
Max Dia: 3.5 FT |
|
MANHOLES 6x6-FT |
Max Dia: 4.5 FT |
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INLETS 3-FT |
Max Dia: 1.25 FT |
|
INLETS 4-FT |
Max Dia: 2 FT |
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INLETS 2X2-FT |
Max Dia: 1 FT |
|
INLETS 2X2.5-FT |
Max Dia: 1.5 FT |
|
INLETS 2x3-FT |
Max Dia: 2 FT |
|
INLETS 2.5x3-FT |
Max Dia: 2 FT |
Concrete pipe wall thickness
| Pipe size (inches) | Wall thickness (inches) |
|---|---|
|
12 |
2 |
|
15 |
2.25 |
|
18 |
2.5 |
|
21 |
2.75 |
|
24 |
3 |
|
27 |
3.25 |
|
30 |
3.5 |
|
36 |
4 |
|
42 |
4.5 |
|
48 |
5 |
|
54 |
5.5 |
|
60 |
6 |
|
66 |
6.5 |
|
72 |
7 |
|
78 |
7.5 |
|
84 |
8 |
|
90 |
8.5 |
|
96 |
9 |
|
102 |
9.5 |
|
108 |
10 |
|
14x23 |
2.75 |
|
19x30 |
3.25 |
|
24x38 |
3.75 |
|
29x45 |
4.5 |
|
34x53 |
5 |
|
38x60 |
5.5 |
|
43x68 |
6 |
|
48x76 |
6.5 |
|
53x83 |
7 |
|
58x91 |
7.5 |
|
63x98 |
8 |
|
68x106 |
8.5 |
Inlet surface elevation adjustment
| Cover |
Structure Centerline o/s from Back of Curb (ft) |
Vertical Correction* (ft) |
|---|---|---|
|
A |
1 |
0.04 |
|
A-S |
1 |
0.04 |
|
B |
1 |
0.04 |
|
B-A |
1 |
0.04 |
|
BW |
1 |
0.04 |
| DW | 1 | 0.00 |
|
F |
1.5 |
0.06 |
|
H |
1 |
0.04 |
|
H-S |
1 |
0.04 |
|
HM |
1.5 |
0.04 |
|
HM-GJ |
1.2 |
0.04 |
|
HM-GJ-S |
1 |
0.04 |
|
T |
1.27 |
0.05 |
|
V |
1.44 |
0.04 |
|
WM |
1.25 |
0.05 |
|
Z |
0.75 |
0.03 |
| * Based on 0.04 '/' gutter or shoulder slope |