Specifications - City of Montpelier, Vermont

Title:Montpelier District HeatingCity of Montpelier, VT02700 – Sewerage and DrainageIssue Date:September 28, 2012Page #:9 of 10B. Form continuous concrete channels and benches between inlets and outlet, whereindicated.C. Set tops of frames and covers flush with finished surface where manholes occur inpavements. Set tops 3 inches (76 mm) above finished surface elsewhere, except whereotherwise indicated.D. Place precast concrete manhole sections as indicated, and install according to ASTMC 891.1. Provide rubber joint gasket complying with ASTM C 443 (ASTM C 443M), at jointsof sections.2. Apply bituminous mastic coating at joints of sections.3.7 CLEANOUT INSTALLATIONA. Install cleanouts and riser extensions from sewer piping to cleanouts at grade. Use PVCsoil pipe and fittings for sewer piping branch fittings and riser extensions to cleanouts.Install fittings so cleanouts open in direction of flow in piping.B. Set cast iron cleanout frames and covers in concrete paving with tops flush with pavingsurface.3.8 TAP CONNECTIONSA. Make connections to existing piping and underground structures so finished workconforms as nearly as practical to requirements specified for new work.B. Protect existing piping and structures to prevent concrete or debris from entering whilemaking tap connections. Remove debris or other extraneous material that mayaccumulate.3.9 FIELD QUALITY CONTROLA. Clear interior of piping and structures of dirt and superfluous material as the workprogresses. Maintain swab or drag in piping and pull past each joint as it is completed.1. In large, accessible piping, brushes and brooms may be used for cleaning.2. Place plug in end of incomplete piping at end of day and whenever work stops.3. Flush piping between manholes and other structures, if required by authoritieshaving jurisdiction, to remove collected debris.B. Inspect interior of piping to determine whether line displacement or other damage hasoccurred. Inspect after approximately 24 inches (600 mm) of backfill is in place, andagain at completion of the Project.SEWERAGE AND DRAINAGE 02700 9