Corrugated Steel Pipe
Cross-Sections of Corrugated Steel Pipe
| Shape | Image | Range of Sizes | Common Uses |
|---|---|---|---|
| Round |  |
6 in. - 52 ft. | Culverts, sub drains, sewers, service tunnels, etc. All plates same radius. For medium and high fill (or trenches). |
| Vertical Ellipse 5% normal |
 |
4 ft. - 21 ft. | Culverts, sewers, service tunnels, recovery tunnels. Plates of varying radii, shop fabrication. For appearance and where back fill compaction is only moderate. |
| Pipe Arch |  |
Span x Rise 17 in. x 13 in. 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 5 ft. 8 in. x 5 ft. 9 in. to 20 ft. 4 in. x 17 ft. 9 in. |
For pedestrians, livestock or vehicles (structural plate). |
| Arch |  |
Span x Rise 5 ft. x 1 ft. 9 1/2 in. to 82 ft. x 42 ft. |
For low clearance large waterway opening, and aesthetics (structural plate). |
| Horizontal Ellipse |  |
Span 7 ft. - 40 ft. |
Culverts, grade separations, storm sewers, tunnels (structural plate). |
| Pear |  |
Span 25 ft. - 30 ft. |
Grade separations, culverts, storm sewers, tunnels (structural plate). |
| High Profile Arch |  |
Span 25 ft. - 83 ft. |
Culverts, grade separations, storm sewers and tunnels. Ammunition magazines, earth covered storage (structural plate). |
| Low Profile Arch |  |
Span 20 ft. - 83 ft. |
Low-wide waterway enclosures, culverts, storm sewers (structural plate). |
| Box Culvert |  |
Span 10 ft. - 53 ft. |
Low-wide waterway enclosures, culverts, storm sewers (structural plate). |
Design Specifications
| Agency | Specifications |
|---|---|
| AASHTO | Standard Specifications for Highway Bridges-Division 1, Section 12 LRFD Bridge Design Specifications - Section 12 |
| ASTM | Standard Practice for Structural Design of Corrugated Steel Pipe, Pipe Arches, and Arches for Storm and Sanitary Sewers and Other Buried Applications - ASTM A796 |
| AREMA | Manual for Railway Engineering - Section 4.9 |
Diameter for Corrugated Steel Pipe
| Inside Diameter | Corrugation Pattern |
|---|---|
| 4" to 18" | 1 1/2" x 1/4" |
| 12" to 84" | 2 2/3" x 1/2" |
| 36" to 144" | 3" x 1" |
| 36" to 144" | 5" x 1" |
Corrugated steel pipe is usually comes in 20' and 24' lengths. But shorter or longer lengths can be provided.
Installation Specifications
| Agency | Specifications |
|---|---|
| AASHTO | Standard Specifications for Highway Bridges-Division II, Section 26 LRFD Bridge Construction Specifications |
| ASTM | Standard Practice for Installing Factory Made Corrugated Steel Pipe for Sewers and Other Applications - ASTM A798 Standard Practice for Installing Corrugated Steel Structural Plate Pipe for Sewers and Other Applications - ASTM A807 |
| AREMA | Manual for Railway Engineering - Section 4.12 |
| U.S. Dept. of Agriculture - Natural Resources |
Conservation Service Construction Specification Section 51 Paragraph 6 Service |
| U.S. Dept. of Agriculture - Forest Service |
Specification for Construction of Roads and Bridges, Section 603.04 through 603.08. |
| Federal Lands Highway | FP92 Section 602.03, 602.05, 602.07, and 602.08 |
Material Description and Specifications
| Material
Group No. | Description | Specifications |
|---|---|---|
| Zinc Coated sheets & coils |
Steel base metal* with 2 oz per ft2 zinc coating | AASHTO M218 - ASTM A929M |
| Polymer Coated Sheets and Coils | Polymer coatings applied to sheets* and coils* , 0,010 in. both sides | AASHTO M246 - ASTM A742M |
| Aluminum Coated coils - type 2 |
Steel base metal* coated with 1 ox. per ft2 of pure aluminum | AASHTO M274 - ASTM A929M |
| Sewer and Drainage Pipe |
Corrugated pipe fabricated from any of the above sheets of coils. Pipe is fabricated by corrugating continious coils into helical form with lock seam or welded seam, or by rolling annular corrugated mill sheets and riveting or spot welding seams: 1. Galvanized corrugated steel pipe 2. Polymeric pre-coated sewer and drainage pipe 3. Aluminized Type 2 corrugated steel pipe 4. Structual plate pipe |
|
| Ashalt Coated Steel Sewer Pipe | Corrugated steel pipe of any of the types shown above with a 0.050 in. asphalt coating | AASHTO M190 - ASTM A849 |
| Invert Paved Seel Sewer Pipe | Corrugated steel pipe of any one of the types shown above; 1. Ashalt coated pipe with 0.050 in. ashpalt coating and pavement poured in the invert to cover the currgation by 1.8 in. 2. With a field applied 3 in. (3250 psi) concrete invert or 1 1/2 in. high strength (9600 psi) concrete invert. 3. With polymer material applied 0.050 in. above the crest in the invert. |
AASHTO M190 - ASTM A849 ASTM A849 ASTM A849 |
| Fully Lined Steel Sewer Pipe |
Corrugated steel pipe of the types shown above: 1. With an internal asphalt lining centrifugally spun in place. 2. With an internal concrete lining in place. 3. Corrugated steel pipe with a smooth steel liner integrally formed with the corrugated shell or. 4. Corrugated steel pipe with a single thickness of smooth sheet fabricated with helical ribs porjected outward or. 5. With concrete pavement and linings installed in the field. |
AASHTO M190 - ASTM A849 AASHTO M36 - ASTM A849 AASHTO M36 - ASTM A760M AASHTO M36 - ASTM A760M |
| Cold Applied Bituminous Coatings | Mastic or coal tar base coating of various viscosities for field or sho coating of corrugated pipe or structural plate. | AASHTO M243 - ASTM A849 |
| Gaskets and Sealants |
1. Standard O-ring gaskets 2. Sponge neonprene sleeve gaskets 3. Gasketing strips, butyl or nioprene 4. Mastic sealant |
ASTM D1056
ASTM C361 |
Federal Highway Administration (FHWA) Abrasion Levels
| Level | Type | Description |
|---|---|---|
| Level 1 | Non-Abrasion | No bed load regardless of velocity or storm sewer application. |
| Level 2 | Low Abrasion | Minor bed loads of sand and gravel and celocities of 5 ft/sec or less. |
| Level 3 | Moderate Abrasion | Bed loads of sand and small stone or gravel with velocities between 5 and 15 ft/sec. |
| Level 4 | Severe Abrasion | Heavy bed loads of gravel and rock with velocities exceeding 15 ft/sec. |