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<br /> i <br /> <br /> Page 5 of 8 <br /> <br /> <br /> the span. A minimum'/4 inch air gap must also be provided between the radiant <br /> barrier and the ceiling or insulation below. <br /> 8.1.2.2. The radiant barrier shall be stretched with the shiny side facing down between <br /> the top cords of the truss and stapled or otherwise secured at each side. A minimum <br /> air space of 1/4 inch above and below is required. <br /> 8.1.2.3. For attic installations only, the radiant barrier shall be stapled or otherwise <br /> secured to the bottom surface of the top cord of the truss and draped below with the <br /> shiny side facing down. A minimum air space of/4 inch above and below is required <br /> 8.1.2.4. For open beam ceiling construction only, the radiant barrier shall be laid on <br /> top of the roof deck with the shiny side facing up and a minimum 1/4 inch air gap <br /> between the radiant barrier and the roofing material above The roof slope must be <br /> greater than or equal to 14° from horizontal. <br /> 8.1.3. At least one square foot of free area for ventilation shall be provided per 150 square <br /> feet of attic floor area or in the case of vaulted or open-beam ceilings per 150 square feet of <br /> ceiling area. In vaulted or open beam ceilings the air space shall be vented with vent area <br /> approximately evenly distributed between the top and the bottom. In vaulted ceilings vents <br /> shall be provided for each air space between rafters." <br /> <br /> (7) Amending Table 402.1.3. Footnote b is added to Table 402.1.3 to read: <br /> <br /> "TABLE 402.1.3 EQUIVALENT U-FACTORS <br /> <br /> Climate Fenestration Skylight Ceiling Frame Wall Mass Floor Basement Crawl <br /> Zone U-Factor U-Factor U-Factor U-Factor Wall U-Factor Wall Space <br /> U-Factor U-Factor Wall <br /> U-Factor <br /> 1 1.2 0.75 0.035 0.082 0.197 0.064 0.360 0.477 <br /> 2 0.75 0.75 0.035 0.082 0.165 6.064 0.360 0.477 <br /> 3 0.65 0.65 0.035 0.082 0.141 0.047 0.360 0.136 <br /> 4 except 0.40 0.60 0.030 0.082 0.141 0.047 0.059 0.065 <br /> Marine <br /> 5 and 0.35 0.60 0.030 0.060 0.082 0.033 0.059 0.065 <br /> Marine <br /> 41 <br /> 61 0.35 0.60 0.026 0.060 0.06 0.033 0.059 0.065 <br /> 7 and 8 0.35 0.60 0.026 0.057 0.057 0.033 0.059 0.065 <br /> a. Nonfenestration U-factors shall be obtained from measurement, calculation or an approved <br /> source. <br /> b. Including framed floors and knee walls." <br /> <br /> <br /> (8) Amending Section 402.2.2. Section 402.2.2 is amended to read: <br /> <br /> "402.2.2 Ceilings without attic spaces. Where Section 402. 1.1 would require insulation levels <br /> above R-30 and the design of the roof/ceiling assembly does not allow sufficient space for the <br />