WHIRLYGIG

PROUDLY SERVICING OUR CUSTOMERS FOR OVER 25 YEARS WITH THE INDUSTRY’S BEST-IN-CLASS RISER / COLLAR SYSTEM

If it isn’t a Whirlygig, it isn’t the original!

THE WHIRLYGIG PROCESS

After excavation, clean off the top of the cone

Place the Whirlygig Form on the top of the cone

Cut the Whirlygig Form to the correct height with the Radial Arm Trimmer

Place frame & lid back onto the form

Measure for accuracy

Ready to pour!

Whether replacing an old manhole riser installation or working on a new project, the Whirlygig system is for you!

Whirlygig is a revolutionary method of manhole riser/collar installation. It is size accurate, installed in minutes and leaves no doubt about quality control. Cast-in-place on site, our manhole riser/collar system is ideal for new construction or rehab projects.

Over 260,000 installations across America and growing every year!

The Whirlygig system is:

Easy to install.

Streamlined installation is a snap and works every time.

Sturdy - Our high quality pre-formed thermoplastic form is constructed to outlast any other system available.

SPECIFICATIONS

Ashland Chemical Material Data Sheet

Strength testing of the WHIRLyGIG form by Strata Engineering

Observations & Recommendations

Best practices for common manhole installations using the WHIRLyGIG system

Load Strength Testing Info

Safety and chemical information about the materials used in WHIRLyGIG forms

Whirlygig Sample Specs

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