Envelope Trade-Off calculator

Building Envelope Trade-off Method may be used in place of the prescriptive criteria of §4.3.1, §4.3.2 and §4.3.3. The building envelope complies with the code if the Envelope Performance Factor (EPF) of the Proposed Building is less than the EPF of the Standard Building, where the Standard Building exactly complies with the prescriptive requirements of building envelope. This method shall not be used for buildings with WWR>40%. Trade-off is not permitted for skylights. The Envelope Trade-off Calculator will perform the calculations as per §4.3.5, to check compliance for the proposed building

°N
m2
ECBC
ECBC +
Super ECBC
Roof Name Roof Area [m2] Roof U-Value [W/m2.K]
Roof 1
m2
W/m2.K

 Add details for all the 4 orientation
Wall Name Orientation Wall Area [m2] Wall U-Value [W/m2.K] Window WWR [%] Window U-Value [W/m2.K] Window SHGC Shading Type PF
Wall 1
m2
W/m2.K
%
W/m2.K
Wall 2
m2
W/m2.K
%
W/m2.K
Wall 3
m2
W/m2.K
%
W/m2.K
Wall 4
m2
W/m2.K
%
W/m2.K