Exterior Envelope Clause Samples
Exterior Envelope. The exterior envelope of the Building shall be designed in accordance with the requirements of Part 5 of the 2005 National Building Code. Exterior walls will be installed in precast concrete panels and will consist of “sandwich” type wall construction, with exterior surfaces in precast concrete panels, backed with rigid insulation, a continuous air barrier, metal studs and interior drywall finish. The minimum thermal resistance of the wall assembly shall be R-20. Walls to have finished gypsum board with one coat of primer. Curtain wall sections shall be Duranar and/or clear anodized finished aluminum and glass, with insulated spandrel panels, backed by an interior drywall finish. Glazing shall be tinted thermal-sealed units. All glazing shall be low-emissivity glass. The entire curtain wall system shall meet the rain-screen principle and all the requirements of applicable codes for wind loads, deflection, condensation, water and air infiltration. The spandrel assembly shall have an effective thermal resistance of R-7. The windows and frames shall be designed so that no condensation occurs on interior surfaces at 30% interior RH with an exterior temperature of -25C. Interior finish to be clear anodized. The windows in precast panels shall be “punched” windows, finished with clear anodized aluminum frames thermally broken and finished in thermosetting acrylic paint. Glazing shall be tinted with low-emissivity sealed units, and to meet all the requirements of applicable codes for wind loads, condensation, and water and air infiltration. All windows shall be provided with commercial office grade sun shade systems. The Landlord shall provide the Tenant with a sample of and specifications for the Base Building sun shade system. The roof assembly shall be inverted type roofing, with two (2) layers of modified asphalt membrane reinforced with polyester sheet. Insulation shall be rigid extruded polystyrene two (2) layers of 2” each, covered with filtering membrane and gravel ballast. The roof assembly shall have a minimum thermal resistance of R-20, and shall meet the requirements of CAN2 37-GP-50M. Floor finishes shall be high-quality stone/granite/ceramic tile. Recessed floor grilles shall be provided in front of exterior doors. Wall finishes shall be combination of materials such as stone, metal/ceramic tile/ wood veneer/ glass and painted drywall. Ceiling shall be painted drywall 14’-0” high with cove lighting and some accent lighting. A custom-designed recepti...
Exterior Envelope. The building envelope shall be a mixture of glazing, precast concrete and metal panel construction meeting all governing authority requirements. The percentage of each material shall be approximately: at minimum Glazing on Building (excluding Parking Garage) – 85%. If used Precast shall be a minimum of 5 ½” thick. Metal wall panel shall be a minimum of 18 gauge.
Exterior Envelope. The exterior envelope for the Building will need to be coordinated with the Tenant's interior fit-up in order to assure the appropriate accommodation of the current program, and also to allow for future flexibility related to unforeseen demands. The average floor to floor height is recommended to be approximately 14'-6" -15'-0" between each floor level, which will allow adequate space for MEP/FP distribution while maintaining a minimum 9"-0" ceiling height above the finished floor within the tenant spaces. As a result, the frame of exterior window heads are typically set at 9'-0" above the finished floor, with the windowsill at 3'-8" minimum above the finished floors of the lab and office areas. The MEP/FP distribution of services at the perimeter wall of the Lab Zones will need to be coordinated in order to maintain the original design intent. Floor to ceiling glass within the working areas of a building has generally proven to be problematic, resulting in unanticipated spandrel conditions at the exterior wall. ▇▇▇▇▇ below this datum within the office zones can also limit the future flexibility of converting office areas into lab or support zones. All exterior glass is to be insulating, and fixed in its frame. The exterior curtainwall systems will also need to accommodate the thermal criteria of the mechanical specifications, providing for an average of 30% RH throughout the Building, with an occasional support area requiring higher humidity levels. The interior and exterior finish selections for the base building scope will also need to be coordinated with the Tenant design during the early phases of the Building's development.