Factor of Safety for Tensile Loading

Dear Sir,

I am using HDPE pipes for Submersible Bore Wells. For Safe Design, what is the Factor Of Safety (F.S) we have to use.

ie., Max. Allowable Tensile Stress = Yield Stress/F.S

Awaiting your valuable sugessions.
With Thanks
SACHI

 

[sloquick]

You're in luck dude.

MAXIMUM ALLOWABLE INNERDUCT PULLING FORCE:

Based on ASTM F 1804-97 Determining Allowable Tensile Load for Polyethylene (PE) Gas Pipe During Pull-In Installation