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High-Performance HVAC | WBDG - Whole Building Design Guide

Nov 07 2016 ยท For example a typical office building minimally complying with the ASHRAE Standard 90.1 might use 75000 Btu/sq.ft./yr. The goal for many federal buildings is 50000 Btu/sq.ft./yr. A highly energy-efficient building using conventional comfort could have an energy use of

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Insulation | Department of Energy

Insulation materials run the gamut from bulky fiber materials such as fiberglass rock and slag wool cellulose and natural fibers to rigid foam boards to sleek foils. Bulky materials resist conductive and -- to a lesser degree -- convective heat flow in a building cavity. Rigid foam boards trap air or another gas to resist conductive heat flow.

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Depreciation rates - Income Tax Department

(d) Building and civil engineering works of permanent character not mentioned above (i) Office & showrooms. 3.02 (ii) Containing Thermo-electric generating plant. 7.84 (iii) Containing Hydro-electric generating plant. 3.4 (iv) Temporary erection such as wooden structures. 33.4 (v) Roads other than Kutcha roads. 3.02 (vi) Others. 3.02

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