Project · Northwest Seattle
Demolition, mass excavation and utilities for a new home
1,740 yardsMass excavation export
235 yardsDemolition export
650 ftFooting drain
260 ftStorm pipe
The job
A new single-family home built inside a soldier pile shoring wall. We carried the site from the first silt fence to the last downspout connection.
What we did
- Site preparation: silt fence, catch basin protection and a construction entrance.
- Demolition: three existing structures with their foundations and pads. One garage was saw-cut so that two of its walls could stay in place.
- Mass excavation: 1,740 yards exported, with the cut sloped for safety and our excavator supporting the shoring crew as they drilled and lagged.
- Groundwater: exterior and interior footing drains, tied to the shoring wall drains and to a pump station in the garage.
- Sewer: a new side sewer with cleanouts on the property, and a liner in the existing pipe from the property line to the main, after jetting and a video inspection.
- Storm: downspout lines to three bio-planters and two catch basins, one for settling silt and one for pumping.
Why one subcontractor
On a tight lot the dig, the shoring and the utilities are all in each other's way. With one crew doing the earthwork and the pipe, the sequence gets planned once.
