Renewal of New Sewer – GBM 339A Jacking Frame & Guidance System, Custom Pullback Reamers

Project Name
Renewal of New Sewer
General Contractor
Derech Afar Technologies Ltd.
Location
Rosh HaAyin, Israel
Ground Conditions
Clay
Akkerman Equipment
GBM 339A Jacking Frame & Guidance System, Custom Pullback Reamers
Pipe
Polyethylene, 225 & 315 mm (9 & 12.4-in.)
Total Length/Hard Rock Section
120 m (393-ft.)

Project Overview

The Rosh HaAyin Municipality required the construction of new sewer and waterlines mainly by pipebursting and open cut methods. However, three new sewer lines were required for underground infrastructure upgrades near a busy intersection.

Challenges

• Exact line and grade required three gravity flow sewers:

• 90 m, 315mm, -1.0% (1, 90m drive)

• 120 m, 315mm, +1.4% (1, 120m drive)

• 300 m, 225mm, +1.0% (3, 100m drives)

• Open-cut excavation was not a viable or safe option

• Existing water, sewer, drainage, communication and electricity underground infrastructure at different depths up to 6.5 m (21-ft.)

• Owner required continued 24/7 traffic during construction

• New road constructed near the excavation route

• Collaboration with all municipalities

Solution

• Use of small diameter Pilot Tube Guided Boring System and two diameters of custom pullback reamers

Outcome

• Accurately executed sewer installations

• Minimal construction disturbance to traffic and businesses

• Safer construction zone

• Camera slope check verified accuracy on all three bores