6.c Group III . 8-foot maximum fill . 2-foot minimum cover. Section 601.2(a)6.a, and as follows:
6.c.1 Polyethylene.
• AASHTO M 294, Types D and S, cell class 435400C, 30- inch maximum diameter ; PennDOT Design Manual Parts 2 and 4, and 2014 AASHTO LRFD Bridge Design Specifications Chapter 12 6.c.2 Polyvinyl Chloride.
• AASHTO M 304, cell class 12364C, 12- inch diameter and 15- inch diameter 6.d Group IV. 7-foot maximum fill . 2.5 -foot minimum cover.
6.d.1 Polyethylene.
• AASHTO M 294, Types D and S, cell class 435400C, 36- inch, 42- inch, 48-inch; PennDOT Design Manual Parts 2 and 4, and 2014 AASHTO LRFD Bridge Design Specifications Chapter 12
• AASHTO M 294, TypeS, cell class 4 35400C, 54-inch and 60-inch diameters ; PennDOT Design Manual Parts 2 and 4, and 2014 AASHTO LRFD Bridge Design Specification Chapter 12
6.e Group V. 7-foot maximum fill . 2.5- foot minimum cover . 6.e.1 Polyethylene.
• AASHTO M 294, Type C, cell class 4 35400C, 24- inch maximum diameter 6.f Group VI. 15-foot maximum fill . 2.0-foot minimum cover .
6.f.1 Polyethylene .
• AASHTO M 294, Types D and S, cell class 4 35400C; PennDOT Design Manual Parts 2 and 4, and 2014 AASHTO LRFD Bridge Design Specifications Chapter 12
6.f.2 Polypropylene.
• AASHTO M 330, Types D and S, 12- inch to 60-inch diameter; PennDOT Design M anual Parts 2 and 4, and 2014 AASHTO LRFD Bridge Design Specifications Chapter 12
6.g Group VII. 12 -foot maximum fill . 2.0-foot minimum cover . 6.g.1 Polyethylene (High Density Polyethylene (HDPE) 100-year pipe) .
• AASHTO M 294, TypeS, cell class 435400C , 18-inch, 21 -inch, 24- inch, 30 -inch, 36 -inch, 42- inch, 48- inch, and 60 -inch diameters ; PennDOT Design Manual Parts 2 and 4, and 2014 AASHTO LRFD Bridge Design Specifications Chapter 12 with:
Fu min = 0.5 ksi E min = 20 ksi
• Comply with the requirements of Table 1 for initial product approval testing. Comply with the requirements of Table 2 for production quality control sampling and testing in addition to the requirements of AASHTO M 294. Provide wa tertight joints accordi ng to AASHTO M 294 using a bell and spigot design. Except: as noted below in Bulletin 15 P roduct Approval and Approved
TABLE 1 6.g.1(a) Stress or Crack Resistance (SCR) of Pipes Pipe Location Test Method Test Conditions Test Requirements
122F and 600 psi applied stress; 5 replicates average failur