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The East Elevation was in particularly poor condition.
The brick pier foundations that support the front porch are in pretty good shape BELOW grade, but are deteriorating above ground level. the structure will be temporarily shored and the brick caps replaced with historic chicago common brick.
New steel has been placed beneath a bearing wall. The wall was supported by a thin, 2 inch thick concrete floor slab. Between the slab failing, and the wood plate rotting, the wall had settled 2-1/2 inches over time.
The brick foundation wall has failed in two places as well: beneath the kitchen (east) wall and beneath the dining room (south) wall. The brick is presently being removed in these areas and replaced with reinforced concrete. The remaining foundation walls will be parged, damp-proofed and then faced with 1/4 Bentonite (volclay) boards with 2 inches of Rigid Insulation on top. A new subsurface foundation drainage system connected to a sump pump will be installed prior to backfilling.
I will do my best to keep the construction shots current - stay tuned!
Prairie Houses, like the Davenport House, in many cases had stone foundations with lime mortar joints. This type of construction was never intended for finished basements and presents technical challenges, associated with moisture and indoor air quality. Past owners have treated the symptoms of the problem by parging the interior of the stone walls in an attempt to control moisture and present a more finished interior surface. I do not like systems that trap moisture within wall assemblies so I am removing the interior parging. I am going leave the stone foundation exposed and control the humidity in a robust proactive manner with mechanical ventilation and humidification.
Collecting moisture at the exterior, opening the wall and controlling the humidity mechanically is a sound technical approach. Moisture problems usually call for multiple control measures. Good work!
Here on the 200 year old adobe walls the results with the stucco were quite disastrous. Its been about 8 years since I was involved in the restoration efforts, last I heard the preferred methodology for protecting the adobe was to use the traditional whitewash.
Exposed framing shows 2-1/2 inches of "meat" over exterior wall framing (no wonder it deflected). Flitches to be added to one side of hip rafter and through-bolted.
Steel plates ready to be installed.
Porch roof is not level, east side is about 3 inches lower than west side:
Support header at ends of cantilevered beams are both split - header attached (nailed) to bottom of header - deflection occurred when beam ends split. Roof to be jacked level, beam ends wrapped and sister beams to be installed.
Exterior Pine trim is now stripped - new stain to be applied after final wood cleaning. Windows are currently being stripped - paint analysis shows that the current ivory color was painted over the original brown sash color.
South Elevation - Roofing and Gutters are next!
Looking good! In the band of basement windows there is an extra mullion on the right side that appears to have been added. Is that original or was it added at some point in time? What is its purpose? Will it remain?outside in wrote:
Will the current transformer cabinet and overhead electric service remain?