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HomeMy WebLinkAboutUncasville Mill Windows Amendment Memo Part AUncasville Mill Windows NPS Condition of Approval: Windows: “Windows: Replacement windows must match the appearance, size design, proportions, and profiles of the existing windows and must have clear glazing. In order to ensure the proposed windows meet the Standards, detailed dimensioned drawings of both the existing and any proposed replacement windows, showing them in relationship to the wall assembly must be submitted for review.” Explanation of how the Project meets the Conditions of Approval Building A No historic windows remain in Building A. Research located photographic evidence to serve as the basis for replacement windows. Please see attached Exhibit A for the photograph which shows 9-over-9, double-hung windows throughout the building. See Exhibit A also for the exterior elevations of Building A showing new 9-over-9 double-hung windows in place, and for details C1 and C2 that show the proposed aluminum clad wood window details. These details are based on the existing wood double hung windows found in Building F. Building B No historic windows remain in Building B. Research located photographic evidence to serve as the basis for replacement windows. Please see attached Exhibit B for the photograph which shows 6-over-6 double-hung windows throughout the building. See Exhibit B also for the exterior elevations of Building B showing new 6-over-6 double-hung windows in place, sliding windows in the 4th floor clerestory areas, and one fixed window above the 4th floor clerestory area on the north elevation. Finally, see Exhibit B for details C1 and C2 that show the proposed aluminum clad wood window details for the double-hung windows. The fixed window details would be similar to the double-hung windows. These details are based on the existing wood double hung windows found in Building F. Building C No historic windows remain in Building C. Photographic evidence for the windows in Building C could not be found. Since Building C (1877) was constructed just twelve years after Building D (1865), the light pattern in Building D was used as a model for Building C. See attached Exhibit C for the exterior elevations of Building C showing new 12-over-12 double-hung windows in place, and for details C1 and C2 that show the proposed aluminum clad wood window details. These details are based on the existing wood double hung windows found in Building F. Building D No historic windows remain in Building D. Research located photographic evidence to serve as the basis for replacement windows. Please see attached Exhibit D for the photograph which shows 12-over-12 double-hung windows. See Exhibit D also for the exterior elevations of Building D showing new 12-over- 12 double-hung windows in the majority of the openings. The north elevation has window openings along the first floor that reduce in size relative to grade to 8-over-8, but remain double-hung in operation. Finally, see Exhibit D for details C1 and C2 that show the proposed aluminum clad wood window details. These details are based on the existing wood double hung windows found in Building F. Building E No historic windows remain in Building E. Research located photographic evidence to serve as the basis for replacement windows. Please see attached Exhibit E for the photograph which shows 2-over-2 double hung windows throughout the building. See Exhibit E also for the exterior elevations of Building E showing new 2-over-2 double-hung windows in place, and for details C1 and C2 that show the proposed aluminum clad wood window details. These details are based on the existing wood double hung windows found in Building F. Building F Some historic windows remain in Building F. Please see attached Exhibit FKM for the existing window report and Exhibit F for details of the existing and proposed windows. See Exhibit F also for the exterior elevations of Building F showing new double-hung and fixed windows in place. Building G No historic windows remain in Building G. Research located photographic evidence to serve as the basis for replacement windows. Please see attached Exhibit G for the photograph which shows windows that match the existing main floor historic windows found in Building M and for the existing and proposed details of that window. See Exhibit G also for the exterior elevations of Building G showing new windows based on the existing main floor historic windows of Building M. Building H No historic windows remain in Building H. Photographic evidence for the windows in Building H could not be found. Since Building H was constructed or renovated during the same time period as Building M (1915-1916), the existing main floor historic windows in Building M were used as a model for Building H. Please see attached Exhibit H which shows the existing and proposed details for the existing main floor historic windows found in Building M. See Exhibit H also for the exterior elevations of Building H showing new windows based on the existing main floor historic windows of Building M. Building J and J/M Connector No historic windows remain in Buildings J and J/M Connector. Photographic evidence for the windows in Buildings J and J/M Connector could not be found. Since Buildings J and J/M Connector were constructed or renovated during the same time period as Building M (1915-1916), the existing main floor historic windows in Building M were used as a model for Buildings J and J/M Connector. Please see attached Exhibit J which shows the existing and proposed details for the existing main floor historic windows found in Building M. See Exhibit J also for the exterior elevations of Buildings J and J/M Connector showing new windows based on the existing main floor historic windows of Building M. Building K Some historic windows remain in Building K, in the basement and in the transoms. No historic windows remain on the main floor. Please see attached Exhibit FKM for the existing window reports. Please see attached Exhibit K for details of the existing and proposed windows. Please see attached Exhibit K also for the photograph which shows windows that match the existing main floor historic windows found in Building M and for the existing and proposed details of that window. Finally, see Exhibit K for the exterior elevations of Building K showing new awning and fixed windows in place. Building L No historic windows remain in Building L. Research located photographic evidence to serve as the basis for replacement windows. Please see attached Exhibit L for the photograph which shows 12-over-12 double-hung windows. See Exhibit L also for the exterior elevations of Building L showing new 12-over- 12 double-hung windows in place, and for details C1 and C2 that show the proposed aluminum clad wood window details. These details are based on the existing wood double hung windows found in Building F. Building M Some historic windows remain in Building M, in the basement and on the main floor. Please see attached Exhibit FKM for the existing window reports. Please see attached Exhibit M for details of the existing and proposed windows. See Exhibit M also for the exterior elevations of Building M showing new awning and fixed windows in place. Proposed Windows: Selection of materials and operation For the double hung windows on Buildings A, B, C, D, E, F and L, the operation will remain double hung and the selected material is aluminum clad wood. For the fixed windows in top floor of Building B, the operation will change to sliding, in order to provide code-required fresh air via an operable window, and the selected material is aluminum clad wood. For the fixed windows in Building F, the operation will remain fixed and the selected material is aluminum clad wood. This material selection recognizes the original wood windows while allowing for cohesion in the window finishes across the project. For the windows in Buildings G, H, J, J/M Connector, and the main floors of K and M, it is proposed to match the existing main floor historic windows in Building M based on historic photographic evidence. The existing main floor historic windows in Building M feature a pair of large fixed lower sash and smaller awning upper sash. The proposed replacement windows match the dimensions of these as closely as possible, while reversing the operation so that the occupants of the building will be able to reach the operable portion. The requirement for fresh air via windows is a code requirement, and this requirement could only be met by making the lower sash operable. In order to obtain operation in the large lower sash while matching the existing dimensions as closely as possible, the material of the windows supporting the glass needs to be metal. For the existing windows in the basements of Buildings M and K and the transom windows in Buildings K, a fixed operation is proposed and the selected material is metal, so that the details of these windows will match that of the large windows on the main floor that are either directly above or below these windows.