Table 4-3. Div. 7 Div.8 Div. 7,9 Div. 15 Div. 16 Rinker Hall Energy Premium Enemiu Star TPO roof Theirnallh-broken curtai\\all. insulated lo\\-e glass, insulclad. opeiable \\indo\\s Hi vh-pertormiance \\all (metal panels. insulation. \\ood strips) Enthalp. \\heel. fans. controls Dimmini Total Eneiuv Premium 1 No Effect $"'5.000 $2.0(1(0 (> 1 ; ;( in Table 4-4. Rinker Hall Rainwater-Harvesting Premium Div. 3 C lllcrtc (\\alls. slab) $12,000 Div. 7 \\ateiirpoofin, (bcintoniitc. tank lining I $2,500 Div 15 Plulibing (pumIps. additional domestic piping) $38,000 Total Rain\ atcr-Hanr c'stii Premium $52,500 In addition to the above, Rinker Hall incorporates low-flow fixtures, electronic faucets, and waterless urinals in the restrooms. Each waterless urinal alone saves an estimated 40,000 gallons of water per year. Dimming (table 4-3) above refers to the photo-cell and motion sensor regulation systems which provides artificial light within the structure only when it is needed, and at variable levels. The result of these efforts was a predicted savings of fifty percent over ASHRAE 90.1. Rinker Hall also incorporated numerous other additions in order to achieve LEED certification. These included such measures as low e/low voc paints at a $5 per gallon premium, a radon protection system for $8,950, agriboard strawboardd) at $200 per sheet, and HPDE in lieu of PVC at a 20% cost increase. These measures were important in the design of Rinker Hall, and in achieving LEED Gold level, however, they have been ignored in this study due to the fact that they address soft cost concerns such as indoor I I