196 Liner Feet of 72” x 1.00” steel casing with 48” carrier pipe @ 1.02% grade installed via Tunnel Boring Machine. Aaron Enterprises, Inc. used an Akkerman mixed face TBM to install this line and grade critical gravity sewer crossing. Two AEI crews worked 24 hours 7 days per week while averaging 10’ of casing installation per day. The crossing was extremely difficult due to the mixed ground conditions; however, Aaron Enterprises, Inc. crews did an excellent job to hit the “bullseye” on this one!
Solid limestone (20,000 psi) to pinnacles of limestone transitioning to dirt.
- Pipe Jacking and Tunneling