STORM SEWERS & CULVERTS

Applicable Specifications and Recommended Use

CIRCULAR PIPE

ASTM C 14 Concrete Sewer, Storm Drain and Culvert Pipe (Non-Reinforced)

C 14 pipe is to be used for the 8 in. and 10 in. diameter sizes,. It may be used for sizes 12 in. trough 36 in. diameter with the provision that C 76 pipe of comparable strength also be specified.  Joint provided for most storm sewer construction employ cement mortar or mastic compound.   For installations with internal or external head condition, joints may be provided meeting the requirements of ASTM C 443 utilizing a rubber gasket.

ASTM C 76 Reinforced Concrete Culvert, Storm Drain and Sewer Pipe

C 76 pipe is used for sizes 12 in. through 144 in. diameter and is available with bell and spigot or tongue and groove ends utilizing cement mortar or mastic compound joints.  These joints are adequate for most culvert and drainage installations.  For the special condition of internal or external heads, joints may be provided meeting the requirements of ASTM C 443 or ASTM C361 utilizing a rubber gasket. ASTM C 76 pipe is the most commonly used storm sewer pipe because of its excellent hydraulic capacity, resistance to abrasion and combustion, capabilities in meeting any variety of load conditions, and availability with a number of related appurtenances.

ASTM C 655 Reinforced Concrete D-Load Culvert, Storm Drain, and Sewer Pipe

C 655 pipe is used for sizes 12 in. through 144 in. diameters designed for specific D-load strength.  Joints provided for most culvert and drainage employ cement mortar or mastic compound.  The properties of the pipe are similar to ASTM C 76 pipe except that the pipe may be designed for a specific D-load strength and the design accepted on the basis of a statistical analysis of test specimens.

Special Shape Pipe and Precast Concrete Boxes

ASTM C 506 Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe

C 506 arch pipe is to be used for size  18 in. through 132 in. equivalent circular sizes and is available with tongue and groove cement mortar or mastic compound joint.  This arch shaped pipe is used for minimum cover situations or other conditions where vertical clearance problems are encountered.  IT offers the hydraulic advantage of greater capacity for the same depth flow than most other structures or equivalent water-way area.  Loads under similar cover conditions are similar to that of circular pipe with the same span.  If arch pipe is not available in a certain area, elliptical pipe may be substituted as an equivalent.

ASTM C 507 Reinforced Concrete Elliptical Culvert, Storm Drain, and Sewer Pipe

C 507 horizontal elliptical pipe is used for sizes 18 in. through 144 in.equivalent circular sizes with tongue and groove cement mortar or mastic compound joint.  The horizontal elliptical pipe is installed with the major axis horizontal and is used for minimum cover situations or other conditions where vertical clearance problems are encountered.  It offers the hydraulic advantage of greater capacity for the same depth of flow than most other structures of equivalent water-way area. Loads under similar cover conditions are similar to that of circular pipe with the same span.

C 507 vertical elliptical pipe is used for sizes 36 in. through 144 in. equivalent circular sizes with tongue and groove cement mortar or mastic compound joint.  The vertical elliptical pipe is installed with the major axis vertical and is used where minimum horizontal clearances are encountered or where unusual strength characteristics are desired.  Hydraulically, it provides higher flushing velocities under minimum flow conditions and carries equal flow at a greater depth than equivalent horizontal elliptical, arch, or circular pipe.   Loads under similar cover conditions are similar to that of circular pipe with the same span. Special installation techniques are required for vertical elliptical pipe.

ASTM C 789 Precast Reinforced Concrete Box Sections for Culverts, Storm Drains, and Sewers

C 789 box sections are used in sizes of span and rise from 3ft. by 2 ft. to 12 ft. by 12 ft. for earth covers over 2 ft.   Although not specifically called out by ASTM C 789, 2 ft. by 2 ft. box sections are also locally available.  Joints provided utilize tongue and groove type ends with cement mortar or mastic compound joints.  Box sections are used where special hydraulic requirements or cross sectional shapes are encountered (such as limited head room).  They offer the advantage of precast products over cast-in-place construction through low installation costs and minimum inconvenience of weather and traffic delay.   Box units may be used in parallel for multicell installations.

ASTM C 850 Precast Reinforced Concrete Box Sections for Culverts, Storm Drains, and Sewers with Less than 2 ft. (0.6 m) of Cover Subjected to Highway Loading

C 850 box sections are used in sizes of span and rise from 3ft. by 2 ft. to 12 ft. by 12 ft. with less than 2 ft. of cover. Although not specifically called out by ASTM C 850, 2 ft. by 2 ft. box sections are also locally available.  Joints provided utilize tongue and groove type ends with cement mortar or mastic compound joints.  Box sections are used where special hydraulic requirements and minimum cover are encountered.  They offer the advantage of precast products over cast-in-place construction through low installation costs and minimum inconvenience of weather and traffic delay.  Box units may be used in parallel for multicell installations.

The following tables are provided from the Illinois Department of Transportation’s “Standard Specifications for Road and Bridge Construction”, January 1, 1997 edition.  Please note that all applicable IDOT provisions must be adhered to when using these tables.  These tables were developed assuming a trench condition, and shall not be used for embankment conditions.

  • Storm Sewers (English)
  • Storm Sewers (Metric)
  • Culverts (English)
  • Culverts (Metric)
  • Elliptical & Arch Culverts (English)
  • Elliptical & Arch Culverts (Metric)

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Applicable Specifications and Recommended Use

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