Site work and paving for a sidewalk / parking lot in Des Moines, Iowa. Completed plans call for site work for a sidewalk / parking lot; and for paving for a sidewalk / parking lot.

Remove Existing concrete and landscaping and incorporate two additional parking spots, one of which is to be ADA compliant at the Peace Officer Memorial as per the attached PHASE 1 Drawings. The complete scope of work shall be completed no later than November, 30th, 2024. Question Deadline 10/16/2024 at 2:00 PM CT All questions regarding this solicitation must be received by email Michael.Bradbury@Iowa.gov The Project is located at Iowa Department of Public Safety 215 E. 7th St. Des Moines, IA. 50319 Respondent must provide a Performance and Payment Bond in accordance with Section 10.8 of Consensus 802 Agreement. The State reserves the right to reject any or all quotes without penalty and to waive minor deficiencies and informalities if, in the judgement of the State, it's best interests will be served. All scopes required for a complete ramp replacement per plans and specifications. The most recent edition of the Iowa Statewide Urban Design and Specifications (SUDAS) shall apply to all site work performed on this project except as modified herein. Drawing Sheets: PHASE 1 - C501 1 2 3 4 5 Concrete Paving - Concrete: Materials and mixing for all concrete work, unless otherwise specified, shall conform to Iowa DOT specifications for air-entrained Type C-4 Mix with Type I Cement. o Fly Ash (contractors Option): ASTM C618. Type C not to exceed 15% of cementitious material. o Course aggregate: Durability shall be class III, 3/4 " Max. o Compressive strength: 2800 PSI @ 7 Days and 4000 PSI @ 28 Days. o Slump: 3" +/- 1" or 8" maximum with super plasticizer or as approved by geotechnical engineer. o Water/Cement Ration: Not to exceed 0.53 o Finish: Heavy broom finish. o Testing: One set of test cylinders as required for each 100 CY, or portion thereof, of concrete done and paid for by owner. Contractor shall coordinate and schedule all required testing and geotechnical work with construction manager. o Surface Curing: Contractor shall apply white pigment liquid curing compound in a fine spray to form continuous uniform film after finish and surface moisture has disappeared or within 30 minutes after forms are removed. o Submit concrete mix design for approval. o Cold weather concrete: when the atmospheric air temperature may be expected to drop below 40F at the time concrete is delivered to the work site, during placement o at any time during curing period, concrete shall be mixed, placed and protected in accordance with ACI standard 306, "Recommended practice for cold weather concreting." It is the owners preference to avoid cold weather concrete and provide temporary granular surfacing for sidewalk and paving as required. Expansion joint filler closed cell polyethylene with strip-off cap for sealant. Pavement Jointing: o Provide IDOT type C joins for joins in parking lot. Provide joints at a maximum spacing of 12 feet for paving or square panels for sidewalks. o Provide IDOT type 'RD' or type 'BT' joints to tie into existing pavement o Provide IDOT type 'DW' joints for end of day paving. o Saw cutting to be completed a maximum of 24 hours from concrete placement. Random cracking caused by delayed saw and cutting may requirement removal and replacement. Contractor to provide owners representative with a pouring sequence and jointing plan for approval prior to paving. Topsoil: Strip, stockpile and respread existing top soil in all areas to be sodded. The depth of topsoil shall be a minimum of 6: after natural settlement and shall conform smoothly to the adjacent lines, grades, and elevations. Provide additional topsoil if existing topsoil is not properly handled and protected. Site Restoration: Sodding: All disturbed areas on the site not to be paved or landscaped shall receive sod. Sod materials and installation shall meet SUDAS specifications. Contractor is responsible for preparing sod, applying sod and the first week of watering post sod placement. Owner will assume responsibility of watering after one week. Sidewalk Ramps: All sidewalk ramps shall be installed according to the side walk ramp details in the provided drawings and in full compliance with proposed accessibility guidelines for pedestrian facilities in the public right-of-way (also known as prowag) and the Americans with Disabilities Act accessibility Guidelines. o Contractor is responsible for all compliance with cross slope and grade requirements for all existing ramps which are required to be removed and replaced as part of the proposed improvements. Adjustments to existing ramps should b e anticipated to bring all disturbed ramps into compliance including the removal of some additional paving to accommodate required sidewalk grades. If the construction cannot bee completed according to the specified limits the contractor shall contract the engineer prior to concrete placement to review proposed adjustments. o Detectable warnings/truncated Domes: Use manufactured detectable warning panels with non-slip surface and raised truncated domes meeting PROWAG dimensions and placement requirements. Detectable warning panels shall be cast iron.