Renovation of a water / sewer project in Ann Arbor, Michigan. Completed plans call for the renovation of a 4,300-square-foot water / sewer project.

Reference Number : 0000377236 The purpose of this Request for Proposal (RFP) is to select a firm to provide construction services for the replacement of an EMPD roof system located in the City of Ann Arbor, Water Treatment Plant ("WTP"). Question Deadline 03/11/2025 at 1:00 PM ET Questions are submitted online : No DESCRIPTION The Project includes the following scope of work related to waterproofing of the Filter and Calciner roofs at the east end of the Ann Arbor Water Treatment Plant facility located at 919 Sunset Rd. Ann Arbor, MI. The total square footage for both the main and upper roofs is approximately 4,300 square feet. A. EXISTING WATERPROOFING SCOPE (WITHIN ROOF AREAS ONLY) 1. Filter Press Roof: a. Affected Roof area is approximately 900 square feet. b. The installation of an equipment platform that extends approximately 3'-4" above the roof surface. c. New platform supports will penetrate the roofing system and anchor to the existing building structural steel beams and columns below. d. Areas of anchorage to be weatherproofed as the roofing membrane system will be disturbed during completion of solid anchorage. 2. Calciner Roof: a. Effected roof area is approximately 1,600 square feet. b. Installation of six new panel antennas and mounting hardware. c. Mounting hardware consist of the main vertical pipe supports with steel angle kickers to provide lateral support. d. The main pipe support will be anchored with a base plate to the existing concrete roof deck with concrete anchors. e. The kicker pipe supports are anchored to sleeper beams that are anchored to the existing concrete roof deck. The sleeper beams are installed with concrete anchors.DEMOLITION 1. Existing Roofing System a. Remove existing aluminum parapet wall coping at the perimeter of the main and upper roof levels. b. Remove existing stone roofing ballast. c. Remove existing EPDM roofing membrane, flashings. d. Remove remaining existing insulation. e. Dispose and/or recycle removed materials. f. Temporarily support equipment, conduits, and other piping during the reroofing process. C. NEW ROOF SYSTEM - FILTER PRESS ROOF (METAL DECK) 1.Prepare metal decking for new roofing system 2.New Roofing System. a. Install vapor barrier. b. install min. 4" foam roofing insulation, tapered toward existing roof drains. c. The first layer of insulation shall be mechanically fastened. d. The second layer of insulation shall be adhered to the first layer. e. Install cover board, adhered to top of insulation. 3. Install new fully adhered EPDM roofing membrane to prepared concrete decking. a. Extend adhered EPDM roofing membrane up the vertical concrete parapet wall. b. Extend adhered EPDM roofing membrane over top parapet wall. c. Install preformed or sheet flashings at roof penetrations and equipment anchor points. d. Install soldered rain collars at roof penetrations and equipment anchor points. e. Install slip sheets under all new and existing sleeper blocks and concrete pavers. f. Install new aluminum parapet coping match existing colors. Color shall be approved by owner. 4. Communications Equipment Installation by Others a. Involve roofing contractor during the installation communications equipment.