1st Floor Interstitial - 8 Pictures.pdf

This document is a photographic reference guide displaying eight images of first floor interstitial spaces within a building's mechanical systems infrastructure. The images depict various ductwork and piping installations located in the interstitial area, with particular focus on mastic sealant applications at different locations labeled AC-1-1A, AC-1-1E, AC-1-2A, AC-1-3E, and AC-1-4A/4E.

The photographs show both duct mastic and pipe mastic applications in white and gray finishes, along with detailed views of wrapped ductwork, piping connections, and sealed joints throughout the first floor interstitial space. Images include close-up documentation of mastic condition, deterioration patterns, repairs, and wrapping materials. The visual documentation appears intended for condition assessment, maintenance tracking, or specification reference purposes for HVAC system maintenance or renovation work.