Sites and Structures Report October 11, 2017

HPTBC Sites & Structures Report October 11, 2017 1. Mouns Jones House: A. Re-laying of southern pier stonework resumes today; B. Mortar analysis excludes “high-calcium” lime from Oley Valley, France, Lancaster and other Hi-Calc lime sources; C. Old MJH mortar is “dolomitic”, according to x-ray microscopy conducted by Geologist Ron Sloto at West Chester U. Geology Lab, with significant proportion of magnesium compounds; Edison Coatings lime mortar from CT is close in content to the analyzed MJH sample and will be applied in re-constructing the test segment of the southern pier; D. Limestone samples from 19 th century quarries close to the northern boundary of MJ’s tract are also dolomitic, in the same range of proportions [Ca, Mg, Si] as the early MJH mortar and the Edison product we will test; E. We will develop pointing mortar from local sand or other appropriate aggregate for color matching, granulation, and texture; F. Photos/slides suggest hewn joists for the 2d floor supports, rather than planed and edge-beaded as stated in a note on the 1958 HABS drawing; all evidence will be considered before joists are milled or hewn and flooring installed. 2. MV Pathways: test patch of stabilized aggregate from Gabel’s quarry was set last week on the upper portion of the center ramp to the WH parking lot; it is still setting up but solid underfoot, as it should be; next test will be performance under wheels; loose surface material possibly caused by mixing process, which we plan to address, but is within predictable and acceptable limits. 3. GDH projects grants: Final signed Agreements were received from PHMC last week. Plans and Specs will be submitted for review and approval, after which we will begin prep and preliminary work, including millwork at Lainhoffs shop, floor joist consolidation, and flooring layout. 4. WH window restoration: two front window frames have been consolidated and sash restored and glazed; the restored frames, new sills, and sash will be re-installed this month; the white paint undercoat is brighter than the lead-free “lead white” finish paint will be when applied next spring. Because of the risk of mildew/mold to the linseed oil finish, we will not paint until then. 5. Keim turner’s shop building: Because of the lack of funding, we recommend temporary measures to stabilize the displaced roof framing, possibly cables and/or rafter-ties. Larry Ward