Oltorf Water Main 60” MTBM
Location: Austin, TX
Client: Cash Construction
Project Dates: In Progress
Summary
• Excavate and install Liner Plate Shafts (Launch – 30’ Diameter, Reception – 22’ Diameter)
• Install 60” Tri-loc Casing using Micro Tunneling methodology (478 LF)
• Contact Grout annulus of 60” Tri-loc casing
• Install 36” Water Line through 60” casing
• Cellular Grout the annular space between product pipe and casing
• Install vertical stand pipe of 36” water line – including installation of 36” welded Tee
• Flowable backfill in shafts up to installed
PROJECT OVERVIEW
This tunnel boring project includes the placement of a 60” water main along Oltorf Street in Austin. BRTG’s scope includes excavating and installing liner plate shafts (Launch – 30’ Diameter, Reception – 22’ diameter), installing 60” Tri-loc casing using micro tunneling, applying contact grout annulus of 60” Tri-loc casing, installing 36” water line through 60” casing, applying cellular grout to the annular space between pipe and casing, installing vertical standpipe of 36” water line including 36” of welded tee, and applying flowable backfill in shafts up to installed welded tee.
