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Corrugated steel pipe is available in a wide range of sizes (up to 96 inches and larger), shapes, gages and corrugation profiles to help designers meet both hydraulic and structural conditions at each site. In addition, corrugated steel pipe is available in a range of coatings, including galvanized, aluminized steel Type 2, polymeric and others. Depending on the respective coating selected for the applicable environmental conditions, a service of 100+ years can be designed.
| Shapes and uses of corrugated conduits |
| Shape |
|
Range of Sizes |
Common Uses
|
| Round |
 |
6 in. -51 ft |
Culverts, subdrains, sewers, service tunnels, etc. All plates same radius. For medium and high fill (or trenches) |
Vertical ellipse
5% nominal |
 |
4-21 ft
nominal;before elongating |
Culverts, sewers, service tunnels, recovery tunnels. Plates of varying radii;shop favbrication. For appearance and hwhere backfill compaction is only moderate. |
| Pipe Arch |
 |
Span x Rise
17 in x 13 ft to
20 ft 7 in x 13 ft 2 in |
Where headroom is limited, Has hydraulic advantages at low flows. Corner plate radius. 18 inches or 31 inches for structural plate. |
| Underpass* |
 |
Span x Rise
5ft 8 in, x 5 ft 9 in.
to
20 ft 4 in. x 17 ft 9 in. |
For pedestrians, livestock or /> vehicles. Visit our Structural Plate pages for more information. |
| Arch |
 |
Span x Rise
5 ft x 1 ft 9 1/2 in.
to
82 ft x 42 ft |
For low clearance large waterway openinng, and aesthetics. Visit our Structural Plate pages for more information. |
| Horizontal Ellipse |
 |
Span
7-40 ft |
Culverts, grade separations, sorm sewers, tunnels. Visit our Structural Plate pages for more information. |
| Pear |
 |
Span
25-30 ft |
Grade separations, culverts, storm sewer, tunnels. Visit our Structural Plate pages for more information. |
High Profile
Arch |
 |
Span
25-83 ft |
Culverts, grade separations, storm sewers and tunnels. Ammunition magazines, earth covered storage. Visit our Structural Plate pages for more information. |
Low Profile
Arch |
 |
Span
20-83 ft |
Low-wide waterway enclosures, culverts, storm sewers. Visit our Structural Plate pages for more information. |
| Box Culvert |
 |
Span
10-53 ft |
Low-wide waterway enclosures, culverts, storm sewers. Visit our Structural Plate pages for more information. |
Notes:
*For equal area or clearance, the round shape is generally more economical and easier to assemble.
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