Lower Olentangy Tunnel
Location
Columbus, OH
Project Facts
245 EA Secant Piles & 240 EA Pre-Excavation Grouting holes
50 EA - 1500mm Secant Piles at 107ft in length with 10ft rock sockets into 15,000psi Limestone
195 EA - 1180mm Secant Piles ranging from 31ft-100ft in length, 66 of which had 10ft rock sockets
Over 32,000 LFT of Pre-Excavation Grouting holes ranging from 131ft -182ft in length, drilling in-rock ranged from 7.5ft to 75ft.
Project Scope
Installation of secant piles and pre-excavation grouting for 5 drop shafts, 3 diversion structures and 4 relief structures for a 3.5 mile long tunnel designed to prevent sewage from overflowing into the Olentangy and Scioto Rivers during heavy rains.
Completed For
The City of Columbus, OH
Lower Olentangy Tunnel
Location
Columbus, OH
Project Facts
245 EA Secant Piles & 240 EA Pre-Excavation Grouting holes
50 EA - 1500mm Secant Piles at 107ft in length with 10ft rock sockets into 15,000psi Limestone
195 EA - 1180mm Secant Piles ranging from 31ft-100ft in length, 66 of which had 10ft rock sockets
Over 32,000 LFT of Pre-Excavation Grouting holes ranging from 131ft -182ft in length, drilling in-rock ranged from 7.5ft to 75ft.
Project Scope
Installation of secant piles and pre-excavation grouting for 5 drop shafts, 3 diversion structures and 4 relief structures for a 3.5 mile long tunnel designed to prevent sewage from overflowing into the Olentangy and Scioto Rivers during heavy rains.
