Site work for a mixed-use development in Columbia, Missouri. Completed plans call for site work for a playground / park / athletic field; and swimming pool.

The City of Columbia Parks and Recreation Department is seeking a contractor to complete the skatepark - phase II at Douglass Park, in Columbia, MO. The identified area for the skatepark shall be approximately 4,000-6,000 square feet No faxed or e-mail responses shall be accepted. If you choose to submit manually, (hard paper copy) go to "Attachments" print the Final RFP in its entirety, complete and submit to: City of Columbia, 701 East Broadway, Purchasing/5th Floor, Columbia, MO 65201 Bids must be received in Purchasing and date stamped by the bid closing date and time. Bids shall be in a sealed envelope, have the bid number and description labeled on the outside of the envelope. All questions concerning the solicitation and specifications shall be submitted in writing via e-mail to the name below. You are encouraged to submit your questions via e-mail. Michelle Sorensen, CPPB Phone: 873-874-6317 E-mail: Michelle.Sorensen@COMO.gov Any oral responses to any question shall be unofficial and not binding on the City of Columbia. An Addendum to this RFQ providing the City of Columbia's official response will be issued if necessary to all known prospective bidders. Questions must be submitted no later than 5:00 p.m. on August 30, 2024. Contractor shall provide, at a minimum per Attachment 1: o Prefabricated concrete skatepark features, components and elements o Grading and excavation for base and sub-base as needed, for installation of all concrete features o Placement of sub-slabs for concrete features, all sawcutting and cold joints o Installation of all skatepark feature(s), components and elements o Coping and rail sections necessary per the skatepark features o Concrete cylinder testing reports for all precast concrete features TECHNICAL SPECIFICATIONS: Contractor shall comply with the following requirements, at a minimum: o Coping and steel edging shall be cleaned, primed and painted correctly o At no point shall standard 'flat' concrete be less than 5" thick o At no point shall ramp or bank concrete be less than 6" thick o At no point shall reinforcing steel be smaller than 3/8" rebar. Welded wire mesh may be used WITH but not in place of-rebar o At no point shall reinforcing steel be spaced more than 12" on center except in flat pours where 18" is acceptable o No concrete shall have a comprehensive strength of less than 4000 pounds per square inch (psi) o Water added to concrete on site, shall not exceed one (1) gallon per yard. Water shall remain on truck unless allowed by City representative o All concrete shall be poured in place and obtained from a plant not further than thirty (30) miles from project site o Concrete shall be completely placed within one hundred twenty (120) minutes of leaving batch plant o No concrete shall have an aggregate smaller than 3/8" o No concrete shall be poured at a slump greater than 5" o All vertical faces shall be vibrated smooth with no voids or projections o Steel coping shall be anchored by welded steel anchors. Rebar is NOT considered a steel anchor. All anchors shall be at minimum, cold rolled black steel rod or bolts o Steel coping anchors shall never be placed within 2" of surface of concrete, thus avoiding cracking and rust broadcast o ALL concrete shall have a 1/8" radius tooled edge, in any instance where edge comes in contact with steel edging o Vertical 1/4" steel plate is exempt from above requirement Contractor shall comply with the following warranty requirements, at a minimum: o Concrete product(s) shall be free from hydration cracking for the entire duration of construction o Cracks concrete, in excess of 1 /4-inch shall be warranted for one (1 ) year o All steel edging shall be warranted against becoming loose for a period of one (1) year o All concrete surfaces shall be warranted against surface spalling or scaling for a period of one (1) year o Concrete under or adjacent to steel edging or coping shall be free from voids, chipping, and/or failure for a period of one (1) year Question Deadline 08/30/2024 at 5:00 PM CT