4149.01 DESCRIPTION.
This section includes requirements for pipe to be used for sanitary sewers and storm sewers, and materials for construction of catch basins and utility access structures.

4149.02 PIPE FOR SANITARY SEWERS.
Pipe for sanitary sewers shall meet the following requirements for the type of pipe specified in the contract documents. Dimensions of end connections and joining material to be used shall be subject to approval of the Engineer.

A. Clay Sewer Pipe.
Clay sewer pipe for sanitary sewers shall meet requirements of ASTM C 700. Unless otherwise specified, standard strength pipe may be used. Pipe may be of bell and spigot or plain end construction.

Pipe shall be provided with factory fabricated joints meeting requirements of ASTM C 425.

B. Concrete Sewer Pipe.
Concrete sewer pipe shall be of the type specified in the contract documents and shall meet requirements of Section 4145. Unless otherwise specified in the contract documents, pipe shall meet requirements for standard strength grade or 1500D (75D) grade. When placed under the roadway, 2000D (100D) pipe shall be used.

C. Ductile Iron Sewer Pipe.
Ductile iron sewer pipe shall meet requirements of ANSI A21.50 and A21.51.

D. Plastic Sewer Pipe.
Plastic sewer pipe shall be nonperforated and semi-rigid with smooth interior wall meeting the requirements of Articles 4146.03, 4146.04, or 4146.05.

4149.03 PIPE FOR STORM SEWERS.
Pipe for storm sewers shall meet requirements for one of the types specified in Article 4149.02, except clay pipe shall not be used. When designated, corrugated steel pipe meeting requirements of Section 4141, or corrugated plastic pipe meeting the requirements of Article 4146.02 may be used.

4149.04 PRECAST CONCRETE UTILITY ACCESS UNITS AND INTAKES.
Precast concrete units may be used for construction of utility access and intakes. These units shall be of the size and dimensions shown in the contract documents and shall meet requirements of Section 4145 or AASHTO M 199/199 M. The Contractor shall be responsible for any additional reinforcement necessary to prevent cracking during transportation and installation. Lengths of sections may be less than 4 feet (1.2 m). Precast utility access units or intakes, furnished in accordance with Section 4145, shall meet requirements for 1500D (75D) concrete pipe except that double line reinforcing is not required. Article 4149.06 shall also apply. The tapered section of precast units shall have a wall thickness, measured on a horizontal plane, not less than that required for the cylindrical sections and shall be of the same quality of concrete. The tapered section shall have circumferential reinforcement not less than that specified for the cylindrical section.

4149.05 UTILITY ACCESS AND INTAKE CASTINGS.
Castings for utility access and intakes shall be gray iron castings meeting requirements of Article 4153.04. Castings shall be of dimensions which conform to the standard patterns shown in the contract documents or approved by the Engineer. The weights (mass) of castings specified shall be the minimum design weight (mass) of ring and cover. Covers over which traffic is expected to travel shall be machined to prevent rattle, and shall have a suitable locking device.

4149.06 UTILITY ACCESS STEPS.
Utility accesses shall not have steps unless specified in the contract documents. When specified, steps shall conform to the pattern shown in the contract documents or as approved by the Engineer.

4149.07 MORTAR.
Mortar for masonry for utility accesses and intakes shall consist of one part Portland cement meeting requirements of Section 4101 and two parts fine aggregate for mortar meeting requirements of AASHTO M 45-04, Aggregate for Masonry Mortar, with sufficient water to produce proper consistency, to which may be added 0.07 to 0.10 parts hydrated lime. Masonry cement containing plasticizers may be used when approved by the Engineer.

This mortar may also be used for pipe joints, when specified.

4149.08 SEWER JOINT SEALING COMPOUND.
Sewer joint sealing compound shall be a cold applied mastic of a type recommended by the manufacturer for the intended use. It shall be supplied in either rope form or flat type form or shall be suitable for trowel application. The material shall meet the requirements of AASHTO M 198 or the following requirements:

1. Sag Resistance.
A patch of compound spread to a thickness of 1/16 inch to 1/8 inch (2 mm to 3 mm) on a thin metal plate shall not sag more than 1/4 inch (6 mm) when allowed to cure for 1 hour at room temperature followed by 5 hours in a vertical position in an oven 140°F (60°C).

2. Brittleness.
The specimen from the sag resistance test, after treatment, shall not show cracking, after cooling to room temperature, when bent through an angle of 180 degrees around a mandrel having a diameter of 1 inch (25 mm).