HomeMy WebLinkAboutCO.320 W Bleeker St.0019-2021-BRES City of Aspen Area Weighted U Value Calculator
V2 modified 12/10/13
Use this to calculate the actual U value of a framed assembly.The R value of cavity
insulation is less than continuous insulation because it is broken up by studs,joists, or
rafters.This calculator will figure out the actual R and U values of your assembly for use
in the 2009 IECC U-factor alternative or for'other' assemblies in Rescheck and
Comcheck
dimensional lumber R value/inch 1.88
framing member depth (actual, inches) 5.5
framing member R value 10.34
framing member U value 0.096712
framing member width (actual, inches) 1.5
framing member spacing (inches o.c.) 16
cavity width 14.5
cavity insulation R value/inch 6.25
cavity insulation depth 5.5
cavity insulation R value 34.375
cavity insulation U value 0.029091
Area weighted avg R value 32.12172
Area weighted avg U value 0.03543
The City of Aspen has created and provided this software solely as a reference.
Users should obtain assistance from a qualified professional to verify accuracy
and applicability before proceeding. The City of Aspen makes no express or
implied warranty with respect to this software or any information contained
herein. To the full extent permissible by law, the City of Aspen disclaims all
responsibility for any damages or losses (including, without limitation, structural
damage, building defects, financial loss, damages for loss in business projects,
loss of profits or other consequential losses) arising in contract, tort or
otherwise from the use of or inability to use this software, or from any action or
decision taken as a result of using this software.