The City's contractor, Sargent Corporation, and N.S. Giles, our concrete subcontractor, hit a major milestone this week with the first concrete pour of the project within Tank #4. Starting under lights in the early morning, 780 cubic yards (78 truck loads) were delivered to the site on Wednesday. With over 40 people onsite either actively working or inspecting/ observing the operation went smoothly and everyone walked away from the day with a sense of accomplishment. This first pour represents approximately 5% of the total concrete that will be placed for the project.
On the other end of the excavation, the placement of the rebar matting began for Tank #1.
For the week ending January 15, 2021.
The City's contractor, Sargent Corporation, has completed the placement of the gravel borrow that will serve as the base for the tanks.
N.S. Giles, our concrete subcontractor, continues with the placement of the rebar matting for Tank #4.
The first concrete pour should be next week.
Temporary forms for the concrete pour
Water infiltration through the sheet piles. We continue to pump 24/7
Waterstop being secured
Stone for fine grading of the base
Week of January 10, 2021
The City's contractor, Sargent Corporation, has completed the excavation with the exception of the deep sumps at either end.
The placement of the gravel borrow that will serve as the base for the tanks continues.
N.S. Giles, our concrete subcontractor, has mobilized to the site.
The NS Giles crew has begun the placement of the rebar matting for Tank #4.
The City Council has approved an easement to bring CMP power onto the site.
Week ending December 18, 2020
Construction activities were slower this week as the project was dealing with vandalism which destroyed equipment and pumps over the past weekend and the snow event Thursday. Once resumed, active placement of the granular material continued. This material will serve as the base for the tanks and numerous geotechnical engineers visited the site to evaluate the material and compaction efforts. Two concrete spanning beams were placed to provide additional bracing at the bottom of the excavation between the sheet pile walls.
The team at Sebago Technics, which is providing our project oversight and inspection services, also provided us this week with the below link to aerial drone footage from the site.
Week of December 13, 2020: The City's contractor, Sargent Corporation, has reached the bottom of the excavation and has begun placing the granular material which the concrete tank will sit upon.
Week of November 30, 2020: The BCSSF hit a milestone last week with the completion of the sheet pile support bracing. Excavation continues from the mid-level steel bracing (Elevation -14) to the bottom of the proposed concrete slab (El. -25).