Specifications - City of Montpelier, Vermont

Title:Montpelier District HeatingCity of Montpelier, VT02700 – Sewerage and DrainageIssue Date:September 28, 2012Page #:5 of 10B. Manhole Frames and Covers: ASTM A 536, Grade 604018, heavyduty ductile iron.Include 24inch (610mm) inside diameter by 7 to 9inch (178 to 229mm) riser with 4inch (100mm) minimum width flange, and 26inch (660mm) diameter cover. Includeindented top design with lettering, equivalent to the following, cast into cover:1. Sanitary Sewerage Piping Systems: SEWER.2. Storm Drainage Piping Systems: DRAIN.2.3 CONCRETEA. Structures: Portlandcement design mix, 4000 psi (27.6 MPa) minimum, with 0.45maximum watercement ratio.1. Reinforcement Fabric: ASTM A 185, steel, welded wire fabric, plain.2. Reinforcement Bars: ASTM A 615, Grade 60 (ASTM A 615M, Grade 400),deformed steel.B. Ballast and Pipe Supports: Portlandcement design mix, 3000 psi (20.7 MPa) minimum,with 0.58 maximum watercement ratio.1. Reinforcement Fabric: ASTM A 185, steel, welded wire fabric, plain.2. Reinforcement Bars: ASTM A 615, Grade 60 (ASTM A 615M, Grade 400),deformed steel.2.4 PROTECTIVE COATINGSA. General: Include factory or fieldapplied protective coatings to structures andappurtenances according to the following:B. Coating: 1 or 2coat, coaltar epoxy, 15mil (0.381mm) minimum thickness, exceptwhere otherwise indicated.1. Manholes: On exterior and interior surfaces.2. Manhole Frames and Covers: On entire surfaces.3. Catch Basins: On exterior and interior surfaces.4. Catch Basin Frames and Grates: On entire surfaces.5. StormWater Inlets: On exterior and interior surfaces.6. StormWater Inlet Frames and Grates: On entire surfaces2.5 OUTFALLSA. Riprap: As indicated on plans and in Section 02200 EarthworkB. Energy Dissipators: Construction as indicated, from materials indicated.SEWERAGE AND DRAINAGE 02700 5