Specifications - City of Montpelier, Vermont

Title:Montpelier District HeatingCity of Montpelier, VT03050 – Concrete and Utility StructuresIssue Date:September 28, 2012Page #:7 of 8walls. In lieu of an elastomeric sealant, one of the following waterproofingsystems may be installed around all wall penetrations:a. Polyken No. 660 system (Polyken Indistries)b. Bituthene 4000 (Grace Construction Products)c. Jiffy Seal 140/60 (Protecto Wrap)d. Polyguard 650 (Polyguard Products)e. Or approved equal2.4 SLEEVESPART 3Openings for the passage of pipes through floors and walls at service entries shall beformed of sleeves of standardweight, galvanized steel pipe. The sleeves shall be ofample diameter to pass the pipe and its insulation, if any, and to permit such expansion asmay occur. Sleeves shall be of sufficient length to be flush at the walls and the bottom ofslabs and to project 2 in. above the finished floor surface. Threaded nipples shall not beused as sleeves.A. Sleeves in exterior walls below ground or in walls below the groundwater levelshall have a 2inch (2”) annular fin of 1/8inch (1/8”) plate welded with acontinuous weld completely around the sleeve at about midlength. Sleeves shallbe hot dipped galvanized after the fins are attached.B. All sleeves shall be set accurately before the concrete is placed or shall be built inaccurately as the masonry is being built.C. Schedule 40 steel pipe (minimum wall thickness) shall be used for the followingapplications:1. Exterior Roof and Walls2. Masonry, Stone, and Concrete Walls3. Floor Sleeves (exposed areas)D. Galvanized steel, 22gauge (minimum thickness) sleeves shall be used for thefollowing applications:1. Gypsum wallboard2. Roof and Floors in Concealed Locations and in Chases– EXECUTION3.1 UTILITY STRUCTURE CONSTRUCTION REQUIREMENTSCONCRETE AND UTILITY STRUCTURES030507