Final Site Selection Report Kittitas_082118

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SECTION 4 EN1213161143SAC DRAFT – 12/23/16 4-1 Tipping Building The approximate 100- by 210-foot transfer building will be divided into three primary functional areas: (1) waste receiving, storage, and handling; (2) tire and white goods loading area; and (3) contractor offices. 4.1 Tipping Floor Level The tipping floor level will consist of a cast-in-place concrete floor surface enclosed by a separate superstructure. The large tipping floor area will be covered by a pre-engineered steel rigid frame system spanning the entire floor. Cast-in-place concrete push walls protecting the exterior building walls will be constructed independent of the building’s framing. Walls enclosing the tipping floor will be a combination of metal panel walls designed to be hosed down for cleaning, and louvered openings will be provided as needed for cross ventilation. Translucent panels will be used high in the walls to provide a natural light source where possible. The exterior walls of the contractor office area will be a combination of cast-in-place concrete and load-bearing concrete block masonry walls. The tipping floor has two separate areas for unloading commercial and self-haul vehicles. The commercial unloading area is designed to handle four vehicles at a time, includes areas for at least 5 days of storage, and has an area for stockpiling single stream recycling material for load-out by the contract operator. The self-haul unloading area is designed to unload nine vehicles at a time and has an area designated for stockpiling construction and demolition debris material for separate load-out. During peak times (Saturdays), the commercial unloading area will be available to unload self-haul vehicles. The transfer building roofing system is designed to provide a minimum of 28 feet of clearance to allow unloading of all types of garbage trucks and other vehicles. The roof is designed so that rain water will flow to the load-out tunnel side of the building at a slope of 2 to 12. The roof system will consist of metal standing-seam panels and selected areas of skylight panels attached to the sub-framing of the pre-engineered building. The metal roof panels will have a bottom surface of sheet metal to protect insulation from water generated by interior hose-down activities. Perimeter gutters will provide drainage from the upper roof with external downspouts discharging to underdrains at the foundation. 4.2 Ground Floor (Tunnel) Level The ground floor level construction will be primarily cast-in-place concrete with portions of the exterior wall surfaces exposed to view. These exposed areas will be finished using painted concrete. Doors, framing, and window framing materials will match other buildings onsite using noncorroding materials wherever possible. The load-out tunnel will have a flat concrete floor, with a pit scale under the load-out port. The tunnel may have two 15-foot-wide by 20-foot-high doors (one on either end). See Figure 2 for the transfer building plan and Figures 3 and 4 for building elevations.