1004 59TH PL SW 2016-01-01 MF Import

Noise Assessment: Broadwa Apartments Pro.ect Page 11 Michael R. Yantis Associates Inc., P.S. (c) The perimeter of window fames shall be sealed airtight to the exterior wall construction with a sealant conforming to one of the following Federal specifications: TT-S-0027, TI'-5-00230 or TI'-5-00153. Roofs: (a) Combined roof and ceiling construction other than described in this section shall have a laboratory sound transmission class rating of at least STC- 34, or (b) With an attic or rafter space at least 6" derp, and with a ceiling below, the roof shall consist of 1/2" composition board, plywood or gypsum board sheathing topped by roofing as required. (c) Open beam roof construction shall follow the energy insulation standard method for batt insulation. hts shall conform to the standards specified (d) Window or dome skylig under the 'Exterior Windows' section. Ceilings: (a) Gypsum board or plaster ceilings at least 112" thick shall be provided where required. Ceiling shall be substantially airtight with a minimum of penetrations. (b) Glass fiber ormineral wool insulation at least R-19 shall be provided above the ceiling between joists. Venni/anion: (a) As required by building code for bedrooms. Air Leakage: The limit The following locations shall be sealed, caulked, gasketed, or weather-stripped or eliminate air leakage: 1. Exterior joints around window and door frames between the window or door frame and the framing. 2. Openings between walls and foundations. 3. Between the wall sole plate and the rough flooring. 4. Openings at penetrations of utility services through walls, Floor, and roofs. 5. Between wall panels at corners. 6. All other such openings in the building envelope.