10_Technical_Exhibit_-_Photos_145027-26-0036_0002.pdf

This is a technical exhibit document containing crawlspace photographs and structural drawings for the PMEL Lab Row Staging Space Renovations project at the Pacific Marine Environmental Laboratory (PMEL) Building 3 in Seattle, Washington. The solicitation number is Sol_1305M326Q0271.

The document provides visual documentation of existing building infrastructure in the crawlspace, including a floor plan schematic identifying the locations of four numbered pictures. The structural drawing shows a typical cross-section of the slab-on-ground construction with column locations marked as "A," "F," and "D," indicating 7-12 inch typical spacing and 4-inch slab on grade construction. The five photographs depict specific existing systems requiring renovation: Picture 1 shows a 4-inch cast iron (CI) no-hub main drain line originating from the restroom core; Picture 2 shows the continuation of the 4-inch CI no-hub main; Picture 3 shows the 4-inch CI no-hub Y fitting that will be replaced with a double Y fitting to accommodate a new 2-inch waste line; Picture 4 documents electrical and low voltage conduits running upward into the Electrical and Data Room; and Picture 5 shows the low voltage conduit location in the DATA room with the proposed placement of a new 2-inch plumbing drain approximately 8 inches inboard of the vertical conduit, positioned away from concrete structural supports. This technical exhibit serves as reference documentation for contractors responding to the renovation work.