Drain Systems:

Demolition confirmed numerous water issues. The wood rot and cement erosion are being addressed by filling in windows in the kitchen area and adding glass block windows. Other floor and foundation related water issues are addressed by three drain system projects.  

The first is an internal perimeter drain. This drain is meant to drain ground water entering the building. It required excavation to below the foundation by hand (jackhammer and shovel) around the entire perimeter of the dining room, dungeon, kitchen, and elevator shaft. Perforated drain pipe was then installed in a silt preventing sock into the excavated trench and covered with stone. The work was inspected by the building inspector before being covered with cement to the level of the existing floor. Weep holes were installed against the outside walls to ensure any water that might enter will be routed to the new drain without entering the floor area. This drain system was completed when the new floor was poured in the kitchen and dungeon areas. The perimeter drain terminates into a powered sump pump located in the elevator shaft.  

The second is an external drain on the Bowman side of the dining room and dungeon. This drain is meant to drain water entering the building from cracks in the Bowman foundation wall. It required excavation to below the foundation by machine and hand along the entire length of the Bowman side of the building. A perforated drain pipe was then installed in a silt preventing sock in the excavated trench below the foundation level and then covered with stone. Rubber sheeting was then draped into the excavated trench, attached to the exterior wall, and then fixed to the ground to form a large waterproof gutter. Perforated drain pipe was then installed in a silt preventing sock into the rubber gutter and covered with stone. The drain terminates into a drywell located under the new paver area in front of the entrance to the dining room. Overflow from the drywell is routed to the storm drain on Bowman. This excavation required removing the Bowman rhododendrons. New plantings will be addressed in the spring. The drywell required removal of the blacktop in front of the dining room entrance, digging down two feet, and adding stone. The drywell and associated plumbing is complete. Pavers will be added over the drywell in the spring.  

The third is the elevator shaft drain. This drain is installed in the new elevator shaft to drain any water entering the shaft. It terminates into a powered sump pump located in the shaft. The perimeter drain also terminates into the powered sump. The powered sump pump is joined with the Bowman drain and terminates into a drywell area in front of the dining room doors.  

Next step: Add powered sump as part of the elevator construction. Add pavers above the completed dry well in the spring. Add new Bowman plantings in the spring.