Specific type of pipe for Trench

[Apexpredetor]

I'm looking for a specification on the type of perforated pipe used in septic distribution Trenches. Any help? I usually just call it 4" Perforated pipe, but I want to be sure I am spec'ing it correct.

Thanks

 

[bimr]

ASTM F 481 – Standard Practice for Installation of Thermoplastic Pipe and Corrugated Pipe in Septic Tank
Leach Fields.

http://www.pmstp.com/img/pdf/en/10265_On-Site_Septic.pdf