ADOPTS WITH AMENDMENTS:

International Private Sewage Disposal Code 2018 (IPSDC 2018)

Heads up: There are no amended sections in this chapter.

User note:

About this chapter: Piping materials used in private sewage disposal systems must comply with standards. Chapter 5 indicates the standards for these products and specifies the material requirements for steel, concrete and fiberglass tanks.

The provisions of this chapter shall govern the requirements for materials for private sewage disposal systems.

Materials shall conform to the standards referenced in this code for the construction, installation, alteration or repair of private sewage disposal systems or parts thereof.

Exception: The extension, addition to or relocation of existing pipes with materials of like grade or quality in accordance with Sections 102.6 and 105.

The manufacturer's mark or name and the quality of the product or identification shall be cast, embossed, stamped or indelibly marked on each length of pipe and each pipe fitting, fixture, tank, material and device used in a private sewage disposal system in accordance with the approved standard. Tanks shall indicate their capacity.
Materials, fixtures or equipment used in the installation, repair or alteration of any private sewage disposal system shall conform to the standards referenced in this code, except as otherwise approved in accordance with Section 105.
Materials installed in private sewage disposal systems shall be handled and installed so as to avoid damage. The quality of the material shall not be impaired.
Defective or damaged materials, equipment or apparatus shall not be installed or maintained.
Tanks shall be of an approved type. The design of tanks shall conform to the requirements of Chapter 8. Tanks shall be designed to withstand the pressures to which they are subjected.
Precast concrete tanks shall conform to ASTM C913. The floor and sidewalls of a site-constructed concrete tank shall be monolithic, except a construction joint is permitted in the lower 12 inches (305 mm) of the sidewalls of the tank. The construction joint shall have a keyway in the lower section of the joint. The width of the keyway shall be approximately 30 percent of the thickness of the sidewall with a depth equal to the width. A continuous water stop or baffle not less than 56 inches (1422 mm) wide shall be set vertically in the joint, embedded one-half its width in the concrete below the joint with the remaining width in the concrete above the joint. The water stop or baffle shall be copper, neoprene, rubber or polyvinyl chloride designed for this specific purpose. Joints between the concrete septic tank and the tank cover and between the septic tank cover and manhole riser shall be tongue and groove or shiplap-type and sealed water tight using cement, mortar or bituminous compound.

Steel tanks shall conform to UL 70. Any damage to the bituminous coating shall be repaired by recoating. The gage of the steel shall be in accordance with Table 504.3.

TABLE 504.3

TANK CAPACITY

TANK DESIGN AND
CAPACITY
MINIMUM
GAGE
THICKNESS
MINIMUM
DIAMETER
Vertical cylindrical
500 to 1,000 gallonsBottom and
sidewalls
12 gageNone
Cover12 gage
Baffles12 gage
1,001 to 1,250 gallonsComplete
tank
10 gageNone
1,251 to 1,500 gallonsComplete
tank
7 gageNone
Horizontal cylindrical
500 to 1,000 gallonsComplete
tank
12 gage54-inch diameter
1,001 to 1,500 gallonsComplete
tank
12 gage64-inch diameter
1,501 to 2,500 gallonsComplete
tank
10 gage76-inch diameter
2,501 to 9,000 gallonsComplete
tank
7 gage76-inch diameter
9,001 to 12,000
gallons
Complete
tank
1/4-inch
plate
None
Over 12,000 gallonsComplete
tank
5/16 inchNone

For SI: 1 inch = 25.4 mm, 1 gallon = 3.785 L.

Fiberglass tanks shall conform to ASTM D4021.
Manhole collars and extensions shall be of the same material as the tank. Manhole covers shall be of concrete, steel, cast iron or other approved material.

Pipe for private sewage disposal systems shall have a smooth wall and conform to one of the standards listed in Table 505.1.

TABLE 505.1

PRIVATE SEWAGE DISPOSAL SYSTEM PIPE

MATERIALSTANDARD
Acrylonitrile butadiene styrene
(ABS) plastic pipe
ASTM D 2661; ASTM D 2751;
ASTM F 628
Asbestos-cement pipeASTM C 428
Cast-iron pipeASTM A 74; ASTM A 888;
CISPI 301
Coextruded composite ABS
DWV Schedule 40 IPS pipe
(solid)
ASTM F 1488; ASTM F 1499
Coextruded composite ABS
DWV Schedule 40 IPS pipe
(cellular core)
ASTM F 1488; ASTM F 1499
Coextruded composite ABS
sewer and drain DR-PS in PS35,
PS50, PS100, PS140 and PS200
ASTM F 1488; ASTM F 1499
Coextruded composite PVC
DWV Schedule 40 IPS pipe
(solid)
ASTM F 1488
Coextruded composite PVC
DWV Schedule 40 IPS pipe
(cellular core)
ASTM F 1488
Coextruded composite PVC-
IPS-DR of PS140, PS200, DWV
ASTM F 1488
Coextruded composite PVC 3.25
OD DWV pipe
ASTM F 1488
Coextruded composite PVC
sewer and drain DR-PS in PS35,
PS50, PS100, PS140 and PS200
ASTM F 1488
Concrete pipe ASTM C 14; ASTM C 76;
CSA A257.1M;
CSA A257.2M
Copper or copper-alloy tubing (Type K or L)ASTM B 75; ASTM B 88;
ASTM B 251
Polyvinyl chloride (PVC) plastic
pipe (Type DWV, SDR26,
SDR35, SDR41, PS50 or
PS 100)
ASTM D 2665; ASTM D 2949;
ASTM D 3034; ASTM F 891;
CSA B182.2; CSA B182.4
Vitrified clay pipe ASTM C 4; ASTM C 700

Perforated pipe for distribution systems shall conform to one of the standards listed in Table 505.1 or 505.1.1.

TABLE 505.1.1

DISTRIBUTION PIPE

MATERIALSTANDARD
Polyethylene (PE) plastic pipeASTM F 405
Polyvinyl chloride (PVC) plastic pipeASTM D 2729
Polyvinyl chloride (PVC) plastic pipe
with pipe stiffness of PS35 and PS50
ASTM F 1488
Joints and connections shall be of an approved type.
Joints between acrylonitrile butadiene styrene (ABS) plastic pipe or fittings shall be in accordance with Sections 505.3.1 and 505.3.2.
Mechanical joints on drainage pipes shall be made with an elastomeric seal conforming to ASTM C1173, ASTM D3212 or CSA B 602. Mechanical joints shall be installed only in underground systems, except as otherwise approved. Joints shall be installed in accordance with the manufacturer's instructions.
Joint surfaces shall be clean and free from moisture. Solvent cement conforming to ASTM D2235 or CSA B181.1 shall be applied to all joint surfaces. The joint shall be made while the cement is wet. Joints shall be made in accordance with ASTM D2235, ASTM D2661, ASTM F628 or CSA B181.1. Solvent cement joints shall be permitted above or below ground.
Joints between asbestos-cement pipe or fittings shall be made with a sleeve coupling of the same composition as the pipe and sealed with an elastomeric ring conforming to ASTM D1869.
Joints between coextruded composite pipe with an ABS outer layer or ABS fittings shall comply with Sections 505.5.1 and 505.5.2.
Mechanical joints on drainage pipe shall be made with an elastomeric seal conforming to ASTM C1173, ASTM D3212 or CSA B 602. Mechanical joints shall not be installed in above-ground systems, except as otherwise approved. Joints shall be installed in accordance with the manufacturer's instructions.
Joint surfaces shall be clean and free from moisture. Solvent cement conforming to ASTM D2235 or CSA B 181.1 shall be applied to all joint surfaces. The joint shall be made while the cement is wet. Joints shall be made in accordance with ASTM D2235, ASTM D2661, ASTM F628 or CSA B181.1. Solvent cement joints shall be permitted above or below ground.
Joints between cast-iron pipe or fittings shall be in accordance with Sections 505.6.1 through 505.6.3.
Joints for hub and spigot pipe shall be firmly packed with oakum or hemp. Molten lead shall be poured in one operation to a depth of not less than 1 inch (25 mm). The lead shall not recede more than 0.125 inch (3.2 mm) below the rim of the hub, and shall be caulked tight. Paint, varnish or other coatings shall not be applied to the joining material until after the joint has been tested and approved. Lead shall be run in one pouring and shall be caulked tight. Acid-resistant rope and acidproof cement shall be permitted.
Compression gaskets for hub and spigot pipe and fittings shall conform to ASTM C564. Gaskets shall be compressed when the pipe is fully inserted.
Mechanical joint couplings for hubless pipe and fittings shall comply with CISPI 310 or ASTM C1277. The elastomeric sealing sleeve shall conform to ASTM C564 or CSA B 602 and shall be provided with a center stop. Mechanical joint couplings shall be installed in accordance with the manufacturer's instructions.
Joints between concrete pipe or fittings shall be made by the use of an elastomeric seal conforming to ASTM C443, ASTM C1173, CSA A 257.3M or CSA B 602.
Joints between copper or copper-alloy tubing, pipe or fittings shall be in accordance with Sections 505.8.1 and 505.8.2.
Mechanical joints shall be installed in accordance with the manufacturer's instructions.
Solder joints shall be made in accordance with the methods of ASTM B828. Cut ends shall be reamed to the full inside diameter of the tube end. All joint surfaces shall be cleaned. A flux conforming to ASTM B813 shall be applied. The joint shall be soldered with a solder conforming to ASTM B32.
Joints between polyethylene plastic pipe and tubing or fittings shall be in accordance with Sections 505.9.1 and 505.9.2.
Joint surfaces shall be clean and free from moisture. Joint surfaces shall be heated to melting temperature and joined. The joint shall be undisturbed until cool. Joints shall be made in accordance with ASTM D2657.
Mechanical joints shall be installed in accordance with the manufacturer's instructions.
Joints between polyvinyl chloride (PVC) plastic pipe and fittings shall be in accordance with Sections 505.10.1 and 505.10.2.
Mechanical joints shall be made with an elastomeric seal conforming to ASTM C1173, ASTM D3212 or CSA B602. Mechanical joints shall not be installed in above-ground systems, except as otherwise approved. Joints shall be installed in accordance with the manufacturer's instructions.
Joint surfaces shall be clean and free from moisture. A purple primer that conforms to ASTM F 656 shall be applied. Solvent cement not purple in color and conforming to ASTM D2564, CSA B137.3, CSA B181.2 or CSA B182.1 shall be applied to all joint surfaces. The joint shall be made while the cement is wet, and shall be in accordance with ASTM D2855. Solvent cement joints shall be permitted above or below ground.
Joints between coextruded composite pipe with a PVC outer layer or PVC fittings shall comply with Sections 505.11.1 and 505.11.2.
Mechanical joints on drainage pipe shall be made with an elastomeric seal conforming to ASTM D3212. Mechanical joints shall not be installed in above-ground systems, except as otherwise approved. Joints shall be installed in accordance with the manufacturer's instructions.
Joint surfaces shall be clean and free from moisture. A purple primer that conforms to ASTM F656 shall be applied. Solvent cement not purple in color and conforming to ASTM D2564, CSA B137.3, CSA B181.2 or CSA B 182.1 shall be applied to all joint surfaces. The joint shall be made while the cement is wet, and shall be in accordance with ASTM D2855. Solvent cement joints shall be permitted above or below ground.
Joints between vitrified clay pipe or fittings shall be made by the use of an elastomeric seal conforming to ASTM C425, ASTM C1173 or CSA B602.
Joints between different piping materials shall be made with a mechanical joint of the compression or mechanical-sealing type conforming to ASTM C1173, ASTM C1460 or ASTM C1461. Connectors or adapters shall be approved for the application and such joints shall have an elastomeric seal conforming to ASTM C425, ASTM C443, ASTM C564, ASTM C1440, ASTM D1869, ASTM F477, CSA A257.3M or CSA B602 or as required in Sections 505.13.1 and 505.13.2. Joints shall be installed in accordance with the manufacturer's instructions.
Joints between copper pipe or copper alloy tubing and cast-iron hub pipe shall be made with a copper-alloy ferrule or compression joint. The copper pipe or tubing shall be soldered to the ferrule in an approved manner, and the ferrule shall be joined to the cast-iron hub by a caulked joint or a mechanical compression joint.
Joints between different grades of plastic pipe or between plastic pipe and other piping material shall be made with an approved adapter fitting. Joints between plastic pipe and cast-iron hub pipe shall be made by a caulked joint or a mechanical compression joint.
Pipe shall be installed in accordance with the International Plumbing Code.

The following types of joints and connections shall be prohibited:

  1. Cement or concrete joints.
  2. Mastic or hot-pour bituminous joints.
  3. Joints made with fittings not approved for the specific installation.
  4. Joints between different diameter pipes made with elastomeric rolling O-rings.
  5. Solvent-cement joints between different types of plastic pipe.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING