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Create Rule5-42.md #1537

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b. Adjustment of the clear-field U-factor in accordance with Section A10.2.

**Rule Assertion:** B-RMR = expected value
**Appendix G Section:** Table G3.1 Section 5(a)-1 Proposed
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#1 is technically an exception so recommend Table G3.1 Section 5a Exception #1


**Rule Assertion:** B-RMR = expected value
**Appendix G Section:** Table G3.1 Section 5(a)-1 Proposed
**Appendix G Section Reference:** 5(a)
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Same as above


**Applicability Checks:**

1. A project has an exterior wall
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Thermal bridging technically applies to all types of constructions including exterior walls, below grade walls, roofs, floors.

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yes, so this could say building has an exterior wall or an exteriors roof or a below grade wall or a floor. Not sure if there would ever be a scenario where a building doesn't have even one of these.

**Applicability:**
- look at each zone in the RMD: `for zone in P_RMD....zones:`
- look at each surface in the zone: `for surface in zone.surfaces:`
- if the surface is an exterior surface, then this rule is applicable for the entire project: `if((surface.adjacent_to == "EXTERIOR") or (surface.adjacent_to == "GROUND")): UNDETERMINED`
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This looks good because you are actually checking for any exterior surface even though the language above says that it only applies to exterior walls.

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recommend changing the description of the applicability check to apply to all exterior surfaces. the implementation looks correct.

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