An App based on the BC hydro/Fortis/Powersmart “Enhanced Thermal Performance Spreadsheet”. The app calculates the impact on the clear field of a wall elevation from the thermal bridging effects of linear transmittances (foundation, floor, roof, corner, window/doors) and point transmittances (signage, etc.)

input_0

Clear Field Value (U₀)

Foundation (At-grade) - Linear Transmittance (ψ)

input_100

input_101

input_103

input_104

Floor 4 Transition - Linear Transmittance (ψ)

input_107

input_108

Corner Transition - Linear Transmittance (ψ)

input_110

input_111

Floor 5 Transition - Linear Transmittance (ψ)

input_114

input_115

input_117

input_118

Floor 6 Transition - Linear Transmittance (ψ)

input_12

input_121

input_122

input_124

input_125

input_13

input_14

Point Interface Detail 2 (χ)

input_149

input_15

input_150

input_151

input_152

Point Interface Detail 3 (χ)

input_155

input_156

input_157

input_158

input_16

input_17

input_18

input_19

Roof Transition - Linear Transmittance (ψ)

Point Interface Detail 1 (χ)

input_201

user_defined_area

area_units

input_21

input_22

input_23

input_24

Window Transition - Linear Transmittance (ψ)

input_26

input_27

input_28

input_29

input_3

Door Transition - Linear Transmittance (ψ)

input_31

input_32

input_33

input_34

input_4

Refer to image above for reference

Refer to point interface detail 1 image for reference.

Refer to floor 1 transition image for reference.

input_5

input_6

input_7

input_8

Floor 1 Transition - Linear Transmittance (ψ)

input_86

input_87

input_89

input_9

input_90

Floor 2 Transition - Linear Transmittance (ψ)

input_93

input_94

input_96

input_97

Floor 3 Transition - Linear Transmittance (ψ)

Thermal Bridging Assembly Calculation