PW#2026-011_SCH_ROOF_AND_WINDOW_REPLACEMENT_Bid_Set.pdf

This is a bid set document for the Seattle City Hall Roof and Windows Replacement project issued by the City of Seattle, Washington. The project encompasses comprehensive building envelope improvements including reroofing with green roof replacement, waterproofing, roof drainage repairs, curtain wall window panel replacement, installation of fall protection systems, bird deterrent systems, and associated maintenance work to restore and extend the service life of the facility located at 600 4th Avenue, Seattle, WA 98104. The bid set provides detailed specifications and requirements for contractors to submit competitive bids for the base project and associated alternates.

The Engineer's Estimate establishes a base bid of $4,552,000.00 with four bid alternates: Surface Applied Glaze at $28,721.00; Waterproof Membrane Augmentation for RT-3 at a deduction of ($48,332.00); New PVC Roofing Membrane for RT-4 at $150,673.00; and New PVC Roofing Membrane for RT-5 at $72,758.00. These pricing terms allow the City to evaluate various options for material specifications and scope modifications while maintaining cost control over the project execution.