Basement Stabilization
This was the second phase of a project started several years ago to stabilize and prevent the collapse of the center section of the west wall of the church. Initial work included new columns and concrete piers to support the main wood girders under the sanctuary, concrete slabs to support the west wall, and drainage to prevent water from further undermining the wall. Footings previously left exposed were back-filled with structural fill, and the basement was graded.
In addition, the wood girders were jacked up on temporary columns. The beams were reinforced by sandwiching them with LVL beams and steel shoes. Each of the twelve supporting columns was replaced, and one additional one was added along with a new footing. Additional LVL beams reinforce the posts that support the balcony and the span under the stage.
The goal of this work was to protect the footings, so that they do not suffer heaving damage in a hard winter, and to provide sufficient support under the sanctuary to allow an audience to sit in the pews and performers to use the stage. This, in short, means that we could have performances in the DRC.
Retaining Wall Reconstruction
To rebuild the retaining wall on the west side of the church, crews will excavate about a third of the lawn on the west side of the DRC and, after photographing and numbering all significant stones, dismantle the wall. The wall will be rebuilt, preserving its historic character, and the earth behind it will be mechanically stabilized to preserve the wall into the future.
West Areaway Slab Replacement
The slab in the west areaway will be saw-cut and removed. It will be replaced with a 12" thick steel reinforced slab conforming to US Department of Interior standards. This will complete the stabilization of the west wall of the DRC.
Electrical Upgrade & Lighting Installation
In 2007, NPA and the City upgraded the DRC's electrical service to 200-amp single-phase 220-volt service.
We also installed an architectural lighting system designed by the Emmy-winning lighting designer Deke Hazirjian. The portico and east facade are now lit every evening from the outside, and the restored window on the west side is lit from the inside.
|