Civic Center Roof Replacement Project

For Civic Center Roof Replacement Project The work to be done in general consists of the complete re-roof of the existing Civic Center Building and Council Chambers Building located on the Concord Civic Center campus in Concord CA. The work will consist of: site mobilization (including temporary fencing), protection of office space in interior of building, dust control, removal of existing roof top exposed ductwork and piping to be reused and replaced, removal of existing rooftop package HVAC units and other mounted equipment and stored for re-installation, removal and replacement of all flashings and sheet metal elements including roof jacks and vent stacks, removal of the existing wood shingle and modified bitumen roofing systems, removal of flashings, and trims, rainwater leaders and brackets, inspection of existing substrate once exposed, repair and if necessary replacement of portions of the existing substrate, installation of new underlayment substrate to receive new composition shingle and single ply roofing systems, installation of new flashings, gutters, downspouts, and trims, saw-cutting and concrete removal at courtyard and walkways, installation of rainwater leader extensions to courtyard, concrete pour-back, bench installation, salvaging of material as required, painting, and sealing, as noted on the drawings, re-installation of all rooftop equipment, duct work (and testing), piping, and rooftop access and ladder features. This work includes all preparation, coordination of detailed phasing requirements, materials and accessories, clean up, and conformance to existing conditions necessary for a complete and functional installed new roof systems, and all other work as specified in these Special Provisions, Technical Sections, and as shown on the Plans. The Contractor shall possess at least one of the following valid Contractor's licenses at the time the bids are opened: Class "B" General Building Contractor or Class "C-39" Roofing Contractor. Further, only a contractor registered with the Department of Industrial Relations (DIR) to bid on public works contracts in California shall be permitted to submit a bid. Furthermore, only subcontractors registered with the DIR to bid on public works contracts in California shall be permitted to perform work or labor or render service under subcontract to the subject contractor. The City Council has ascertained that State of California prevailing wage rates are applicable for this and all City projects. The Contractor may elect to receive 100% of payments due under the contract from time to time, without retention of any portion of the payment by the City, by depositing securities of equivalent value with the City in accordance with the provisions of Section 22300 of the Public Contract Code and with applicable City regulations. Such securities, if deposited by the Contractor, will be valued by the City's Finance Director, whose decision on valuation of the securities will be final. In order to ensure that all bidders receive notification of addenda or amendments to bid proposals, the City has selected BPXpress Reprographics as its exclusive provider of bid specification and proposal forms. Contact the City Clerk at (925) 671-3495 for questions or assistance in dropping off bids. ALL BIDS SHALL BE PRESENTED UNDER SEALED COVER AND SHALL BE ACCOMPANIED BY CASH, CASHIER'S OR CERTIFIED CHECK OR A BIDDER'S BOND EXECUTED BY A CORPORATE SURETY INSURER. THE BIDDER'S GUARANTEE SHALL BE IN AN AMOUNT EQUAL TO AT LEAST TEN PERCENT (10%) OF THE AMOUNT BID AND MADE PAYABLE TO THE CITY OF CONCORD. To limit disruption to City staff working within the Civic Center building, a limited number of personnel will be allowed on the rooftop at once. The pre-bid job meeting and subsequent roof access sign up are required and any bidders who do not attend may have their bid deemed non-responsive. For information regarding the project or required pre-bid job meeting, contact Kevin Wheat , P.E., Associate Civil Engineer, at kevin.wheat@cityofconcord.org. A Bidder Request for Clarification form is included at the back of Appendix B. The deadline for submitting any questions about this project is 2:00 PM on Tuesday, January 31st, 2023.

41,349 SF.

Division 07 -

Thermal and Moisture Protection, Dampproofing and Waterproofing, Thermal Protection.