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 speciļ¬cations sheet for our patented manhole collar/riser system.