Specifications

Ashland Chemical Material Data Sheet
Safety and chemical information about the materials used in WHIRLyGIG forms

Load Strength Testing Info
Strength testing of the WHIRLyGIG form by Strata Engineering

Observations & Recommendations
Best practices for common manhole installations using the WHIRLyGIG system

Whirlygig Sample Specifications
Sample speciﬁcations sheet for our best-in-class manhole riser/collar system

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