Specifications - State of Delaware

SECTION 334100 - STORM UTILITY DRAINAGE PIPING: continued
B. High Density Polyethylene Pipe and Fittings:
1. All polyethylene pipe shall have a corrugated outer wall and an integrally formed smooth
interior, and shall meet AASHTO M294 and DelDOT Specifications for Type "S" high
density polyethylene pipe.
2. Pipes, couplings, and fittings shall be meet the requirements of AASHTO M294,
modified as follows: Minimum pipe stiffness shall be 35 psi at 5% deflection and 30 psi
at 10% deflection, when tested in accordance with ASTM D2412.
3. Pipe shall have an integral built-in bell and factory-installed gasket. Joints for all
polyethylene pipe greater than 12 inches in diameter shall be watertight in accordance
with ASTM 1417.
C. Reinforced Concrete Pipe:
1. Reinforced Concrete Pipe shall conform to the requirements of Section 612 of the
Standard Specifications. All Reinforced Concrete Pipe shall conform to ASTM C76,
Class III or IV.
2. Joint design for round reinforced concrete pipe and fittings shall conform to
AASHTO C443. Conic surface of spigot or tongue shall be designed to properly contain
and seat the gasket, or gasket shall be designed so that it is properly contained and seated
on conic surface of spigot or tongue.
3. Joint Material shall be flexible rubber gaskets, meeting the criteria of ASTM C443. Joint
material primer or adhesive shall be as provided or specified by pipe manufacturer.
D. Ductile Iron Pipe and Fittings:
1. Shall conform to AWWA C-151, and shall be manufactured in 18 or 20-foot nominal
lengths.
2. Use push-on joints, conforming to AWWA C-151 and AWWA C-111, except where
mechanical joints are indicated on the plans.
PART 3 - EXECUTION
3.01 MATERIAL INSPECTION:
A. The following information shall be clearly marked on each pipe section of PVC pipe:
1. Pipe type and SDR number.
2. Nominal pipe size.
3. The PVC cell classification.
4. Name or trademark of manufacturer.
5. The ASTM Specification designation.
B. PVC Fittings shall have the following markings:
1. The ASTM Specification designation.
2. Manufacturer's name or trademark.
3. Nominal size.
4. The material designation.
C. Polyethylene pipe shall be marked with the pipe class, date of manufacture, and the name or
trademark of the manufacturer.
D. The following information shall be clearly marked on each section of reinforced concrete pipe:
1. Specification designation (ASTM).
2. Pipe class or strength designation.
3. Date of manufacture.
4. Name or trademark of manufacturer.
5. For reinforced pipe with elliptical or quadrant reinforcement the letter E or Q,
respectively.
334100-2 DEAN334100.DOC