COM 1514.001 2006-2008 - Laserfiche WebLink

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Where a building includes both residential and commercial occupancies, each occupancy shall be separately considered and meet the applicable provisions of Chapter 4 for residential and Chapter 5 for commercial. 101.5 Compliance. Residential buildings shall meet the provisions of Citapter 4 . Commercial buildings shall meet the provisions of Chapter 5 . 101.5.1 Compliance materials. The code official shall be permitted to approve specific computer software, work- sheets, compliance manuals and other similar materials that meet the intent of this code. 101.5.2 Low energy buildings. The following buildings, or portions thereof, separated from the remainder of the building by building thermal envelope assemblies complying with this code shall be exempt from the building thermal envelope provisions of this code: 1. Those with a peak design rate of energy usage less than 3.4 Btu/h ft 2 (10.7 W/ mZ) or 1.0 watdit 2 (10.7 W/ mz) of floor area for space conditioning purposes. 2. Those that do not contain conditioned space SECTION 102 MATERIALS, SYSTEMS AND EQUIPMENT 102.1 Identification. Materials, systems and equipment shall be identified in a manner that will allow a determination of compliance with the applicable provisions of this code. 102.1.1 Building thermal envelope insulation. An R -value identification mark shall be applied by the manufacturer to each piece of building thermal envelope insulation 12 inches (305 mm) or greater in width. Alternately, the insulation installers shall provide a certification listing the type, manufacturer and R -value of insulation installed in each element of the building thermal envelope. For blown or sprayed insulation (fiberglass and cellulose), the initial installed thickness, settled thickness, settled R -value, installed density, coverage area and number of bags installed shall be listed on the certification. For sprayed polyurethane foam (SPF) insulation, the installed thickness of the areas covered and R- value of installed thickness shall be listed on the certification. The insulation installer shall sign, date and post the certification in a conspicuous location on the job site. 102.1.1.1 Blown or sprayed roof/ceiling insulation. The thickness of blown in or sprayed roof/ceiling insulation (fiberglass or cellulose) shall be written in inches (mm) on markers that are installed at ]east one for every 300 square feet (28 mZ ) throughout the attic space. The markers shall be affixed to the trusses orjoists and marked with the minimum initial installed thickness with numbers a minimum of 1 inch (25 mm) in height. Each marker shall face the attic access opening. Spray polyurethane foam thickness and installed R- value shall be listed on certification provided by the insulation installer 102.1.2 Insulation mark installation. Insulating materials shall be installed such that the manufacturer's R -value mazk is readily observable upon inspection. 102.1.3 Fenestration product rating. U -factors of fenestration products (windows, doors and skylights) shall be determined in accordance with NFRC 100 by an accredited, independent laboratory, and labeled and certified by the manufacturer. Products lacking such a labeled U-factor shall be assigned a default U- factor from Table 102.1.3(1) or 102.1 3(2~. The solar heat gain coefficient (SHGC) of glazed