The Batch Consolidation Conduits is part of Portland’s 20 year program to control combined sewer and stormwater overflows to the Willamette River.
The work includes the construction of six tunnel access shaft sites. The tunnel shafts will be used to launch and retrieve the microtunneling boring machine (MTBM) and future maintenance access. The shafts range from 23 to 33 feet in diameter and will be 40 to 72 feet deep.
Two MBTMs (84” & 54” in diameter) will tunnel and install most of the 8500 feet of pipeline at depths ranging from 20 to 70 feet.
Shaft B Excav with Manbasket
SIS Scheduling Scope of Work:
SIS built the successfully submitted and approved CPM baseline schedule.
SIS provides the full time lead scheduler for this project to maintain the as-built schedule.
SIS provides 3-week-look-ahead schedule for the weekly meeting.
SIS provides monthly schedule analysis and reports, and SIS heads the review meeting with the contractor and owner.
SIS provides mid-month schedule forecast for cash advance payment
