BEP Interactive Calculators

introduction

These interactive calculators allow you to enter values specific to your construction type and location to determine the energy efficiency of your new or existing building.

web-based calculators

	Modified Zone Method Calculate thermal resistance (R-values) for metal stud walls with insulated cavities.
	Moisture Control in Low-Slope Roofing Determine if a roof design needs a vapor retarder or if the roofing system can be modified to enhance its tolerance for small leaks.
	Whole Wall R-value Calculator Determine thermal resistance (R-values) for whole walls by selecting the components that make up the walls in your home. This is the new and updated version. This version will be updated periodically. *** UPDATED 10-10-06 * New Whole Wall R-value Calculator 2.0 Available For Download ************************** ATTENTION ALL BUILDING MATERIAL PRODUCERS** If you are interested in having materials represented within the calculator, please contact Dr. Jan Kosny at: kosnyj@ornl.gov
	Thermal Mass Calculator Determine energy efficiency and energy cost savings benefits based upon the climate you are located in. ATTENTION ALL BUILDING MATERIAL PRODUCERS If you are interested in having materials represented within the calculator, please contact Dr. Jan Kosny at: kosnyj@ornl.gov
	Solar Reflectance Index (SRI) Calculator ASTM Designation E 1980 - 01
	ZIP-Code R-Value Recommendation (Requires Java-enabled browser) Find the most economic insulation level and cost value for new or existing construction based on the climate in your area.
	Radiation Control Calculator (Requires Java-enabled browser) Estimate annual energy cost savings from the use of solar radiation control on low-slope roofs for commercial buildings. Estimate annual energy cost savings from the use of solar radiation control on steep-slope roofs for residential buildings. First-time users are encouraged to visit the Solar Radiation Control Fact Sheet first for essential background on use of the estimating tool.

This page updated on October 10, 2006 by Teresa Williams.