Create Rule5-43.md

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+# Envelope - Rule 5-43  
+
+**Mandatory Rule:** True
+**Rule ID:** 5-43  
+**Rule Description:** Automatic fenestration shading devices shall not be modeled in the Baseline.  
+**Rule Assertion:** Baseline RMD = expected value  
+**Appendix G Section:** Section G3.1-5(f) Building Envelope Modeling Requirements for the Baseline building  
+
+**Manual Check:** None  
+**Evaluation Context:** Each Building  
+**Function Call:**  
+
+
+## Applicability Check:  
+- look at each zone: `for building in B_RMD.buildings:`
+    - look at each zone: `for zone in building...zones:`
+        - look at each surface: `for surface in zone.surfaces:`
+            - check if the surface is an exterior surface type: `if surface.adjacent_to == "EXTERIOR":`
+                - look at each subsurface: `for sub_surface in surface.subsurfaces: CONTINUE TO RULE LOGIC`
+    - if the code reaches here without going to the rule logic, the building has no exterior subsurfaces and the rule is not applicable: `NOT APPLICABLE`
+
+    ## Rule Logic:  
+    - create a list automatic_shades_modeled and initialize it as an empty list: `automatic_shades_modeled = []`
+    - look at each zone: `for zone in B_RMD...zones:`
+        - look at each surface: `for surface in zone.surfaces:`
+            - check if the surface is an exterior surface type: `if surface.adjacent_to == "EXTERIOR":`
+                - look at each subsurface: `for sub_surface in surface.subsurfaces:`
+                    - check whether the subsurface has the data element has_automatic_shades: `if sub_surface.has_automatic_shades != NULL:`
+                        - if the window has automatic shades, append this sub_surface id to the list automatic_shades_modeled: `if sub_surface.has_automatic_shades: automatic_shades_modeled.append(sub_surface.id)`
+    - GO TO RULE ASSERTION
+
+    **Rule Assertion:**
+    - Case 1: If the baseline does not have shading devices, the list automatic_shades_modeled will be empty, PASS: `if len(automatic_shades_modeled) == 0: PASS`
+    - Case 2: Otherwise FAIL: `else: FAIL`
+
+
+**Notes:**
+
+
+**[Back](../_toc.md)**
+
+