From 070e2eb761c4478e3cb7a05bd8c4296013847778 Mon Sep 17 00:00:00 2001
From: Bruno Postle <bruno@postle.net>
Date: Fri, 27 Feb 2026 09:19:52 +0000
Subject: [PATCH] Fix thermal transmittance property name typo

Remove duplicate 'Thermal Transmitance' (with space, single-t) from
Pset_WallCommon on walls; the canonical IFC4 property name is
'ThermalTransmittance'. Update EN_Basic IDM Check.ids to match.

Closes #1
---
 IDS/EN_Basic IDM Check.ids | 4 ++--
 _test_simple.ifc           | 3 +--
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/IDS/EN_Basic IDM Check.ids b/IDS/EN_Basic IDM Check.ids
index 98c8e62..f0342ca 100644
--- a/IDS/EN_Basic IDM Check.ids	
+++ b/IDS/EN_Basic IDM Check.ids	
@@ -66,7 +66,7 @@
         </property>
       </requirements>
     </specification>
-    <specification name="(4.6) Building Physics Properties (Thermal Transmitance)" description="Check the presence of building physics properties in the selected elements. Here we test if the ThermalTransmittance (U-value) values are defined for wall elements. Other examples of common building physics properties are AcousticRating (soundproofing), SolarHeatGainTransmittance (SGGC value), and Translucency (light transmission) [ 1. Use the sections 'Property set' and 'Property Name' to modify the IFC Class and building physics properties to examine ]" ifcVersion="IFC2X3 IFC4">
+    <specification name="(4.6) Building Physics Properties (Thermal Transmittance)" description="Check the presence of building physics properties in the selected elements. Here we test if the ThermalTransmittance (U-value) values are defined for wall elements. Other examples of common building physics properties are AcousticRating (soundproofing), SolarHeatGainTransmittance (SGGC value), and Translucency (light transmission) [ 1. Use the sections 'Property set' and 'Property Name' to modify the IFC Class and building physics properties to examine ]" ifcVersion="IFC2X3 IFC4">
       <applicability minOccurs="0">
         <property>
           <propertySet>
@@ -86,7 +86,7 @@
             <simpleValue>Pset_WallCommon</simpleValue>
           </propertySet>
           <baseName>
-            <simpleValue>Thermal Transmitance</simpleValue>
+            <simpleValue>ThermalTransmittance</simpleValue>
           </baseName>
         </property>
       </requirements>
diff --git a/_test_simple.ifc b/_test_simple.ifc
index bc298b6..b5b6164 100644
--- a/_test_simple.ifc
+++ b/_test_simple.ifc
@@ -112,7 +112,7 @@ DATA;
 #130=IFCPROPERTYSINGLEVALUE('IsExternal',$,IFCBOOLEAN(.T.),$);
 #131=IFCPROPERTYSINGLEVALUE('LoadBearing',$,IFCBOOLEAN(.T.),$);
 #132=IFCPROPERTYSINGLEVALUE('ThermalTransmittance',$,IFCTHERMALTRANSMITTANCEMEASURE(0.18),$);
-#133=IFCPROPERTYSET('0wl6OhyWr2iA9pDkmdaWFQ',$,'Pset_WallCommon',$,(#130,#131,#132,#4033,#4034));
+#133=IFCPROPERTYSET('0wl6OhyWr2iA9pDkmdaWFQ',$,'Pset_WallCommon',$,(#130,#131,#132,#4033));
 #134=IFCPROPERTYSINGLEVALUE('Awesomeness',$,IFCLABEL('much'),$);
 #135=IFCPROPERTYSET('3zIBl0ukfF7wFrp1D_wXHL',$,'Custom_Pset',$,(#134));
 #136=IFCWALLTYPE('12KGQOkFLFGhdFT6s1576h',$,'exterior',$,$,(#133,#135),$,$,$,.SOLIDWALL.);
@@ -3673,6 +3673,5 @@ DATA;
 #4031=IFCCOSTVALUE($,$,IFCMONETARYMEASURE(3620.6),$,$,$,'*',$,$,$);
 #4032=IFCCOSTVALUE($,$,IFCMONETARYMEASURE(1464.5),$,$,$,'*',$,$,$);
 #4033=IFCPROPERTYSINGLEVALUE('FireRating',$,IFCLABEL('30'),$);
-#4034=IFCPROPERTYSINGLEVALUE('Thermal Transmitance',$,IFCREAL(0.18),$);
 ENDSEC;
 END-ISO-10303-21;