1. This specification applies to high density polyethylene corrugated pipe with an integrally formed smooth interior. 2. This specification is applicable to nominal sizes 4” - 36" diameter. Requirements for test methods, dimensions and markings are those found in AASHTO Designations M-252 and M-294. 3. Pipe and fittings shall be made of polyethylene compounds which meet or exceed the requirements of Type III, Category 4 or 5, Grade P33 or P34, Class C per ASTM D1248 with the applicable requirements defined in ASTM D1248. Clean reworked material may be used. Item #1: 4” 50 psi (50 psi @ 5% deflection) Item #2: 6” 50 psi Item #3: 8” 50 psi Item #4: 10” 50 psi Item #5: 12” 45 psi Item #6: 15” 42 psi Item #7: 18” 40 psi Item #8: 24” 34 psi Item #9: 30” 28 psi Item #10: 36” 22 psi
