Specifications - City of Montpelier, Vermont

Title:Montpelier District HeatingCity of Montpelier, VT03050 – Concrete and Utility StructuresIssue Date:September 28, 2012Page #:8 of 8A. General Requirements1. Conform with the requirements of Section 02200 – Earthwork for subgradepreparation. Placement on natural grade is preferred, if stable.2. Allow pouredinplace concrete footings and floor slabs to reach a strength of3,500 psi before continuing structure construction.3. Provide continuous performed butyl rubber joint seal as specified in allhorizontal joints of precast structures.a. Install in accordance with manufacturer's recommendations.b. Butt ends together and do not overlap material.c. Leave protective paper in place during application and handling; removejust prior to coupling.4. Modular Link Type Seals and Sleeves: Conform with manufacturer'sinstallation procedures.B. Storm Sewer Connections: Where required, the CONTRACTOR shall core drillinto storm sewer to make the final drain connection, and in all instances close andseal all openings around the outside of the pipe in precast structures in accordancewith the City of Montpelier Department of Public Works, Design Standards forRoad and Utility Construction.C. Wall Penetrations and Exterior Waterproofing Systems: Prior to backfillingstructures and wall penetrations, install all exterior waterproofing seals andmembranes. Membranes must be left visible for the OWNER’S ProjectSuperintendent to inspect prior to backfilling. Backfilling around membranesprior to OWNER’S inspection may be grounds for rejection of work and reexcavation for inspection at the CONTRACTOR’S expense.3.2 MATERIAL TESTINGA. All concrete structures poured inplace shall be tested for compressive strength inaccordance with Section 01430 – Quality Assurance.B. The CONTRACTOR is responsible for all testing required for installation ofconcrete structural items.C. The CONTRACTOR shall provide record of Material Testing results (i.e.,concrete compressive strength) to the OWNER in accordance with the provisionsof Section 01340 – Submittals.END OF SECTION 03050CONCRETE AND UTILITY STRUCTURES030508