Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Hi, Appendix A (Tables 3.1) in ASHRAE 90.1 has information on the relation between equivalent U-values and R values of wall sections. By general definition, U-value is the ratio of the conductivity to the thickness of a material, and R-value is the reciprocal of the U-value. Hope this answers your question.
