diff --git a/model.ifc b/model.ifc
index 182ce74..12363c6 100644
--- a/model.ifc
+++ b/model.ifc
@@ -1,7 +1,7 @@
 ISO-10303-21;
 HEADER;
 FILE_DESCRIPTION(('ViewDefinition[DesignTransferView]'),'2;1');
-FILE_NAME('model.ifc','2024-01-23T14:49:38+00:00',(),(),'IfcOpenShell 0.7.0','BlenderBIM 0.0.999999','Nobody');
+FILE_NAME('model.ifc','2024-01-23T14:51:49+00:00',(),(),'IfcOpenShell 0.7.0','BlenderBIM 0.0.999999','Nobody');
 FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
@@ -85,7 +85,7 @@ DATA;
 #272=IFCPROPERTYSINGLEVALUE('Engine',$,IFCLABEL('BlenderBIM.DumbLayer2'),$);
 #273=IFCRELASSOCIATESMATERIAL('0CNJw5s$z1xv3KUvpbyjyc',$,$,$,(#264),#274);
 #274=IFCMATERIALLAYERSETUSAGE(#68,.AXIS2.,.POSITIVE.,0.,$);
-#275=IFCPRODUCTDEFINITIONSHAPE($,$,(#12476,#12500,#12738,#12762));
+#275=IFCPRODUCTDEFINITIONSHAPE($,$,(#12476,#12500,#12738,#12762,#16549,#16573));
 #350=IFCRELCONNECTSPATHELEMENTS('1qa1YJr_T0og8N9nKv3$Le',$,$,'MITRE',$,#264,#75,(),(),.ATSTART.,.ATEND.);
 #435=IFCWALLTYPE('39B0AQLQv3f9NCtsiWQ9Mh',$,'Partition',$,$,(#439),$,$,$,.PARTITIONING.);
 #436=IFCMATERIALLAYERSET((#438),$,$);
@@ -7560,5 +7560,774 @@ DATA;
 #16087=IFCBOUNDINGBOX(#16086,1.07708251476288,0.670868515968323,0.775499403476715);
 #16088=IFCSHAPEREPRESENTATION(#17,'Box','BoundingBox',(#16087));
 #16089=IFCPRODUCTDEFINITIONSHAPE($,$,(#16088,#16085));
+#16090=IFCPROPERTYSET('1wX9RaqSjEifK$2FPMFzRv',$,'EPset_Drawing',$,(#16092,#16093,#16094));
+#16091=IFCRELDEFINESBYPROPERTIES('23bT522FnFAeO_aRKySVE8',$,$,$,(#9546),#16090);
+#16092=IFCPROPERTYSINGLEVALUE('HasUnderlay',$,IFCBOOLEAN(.F.),$);
+#16093=IFCPROPERTYSINGLEVALUE('HasLinework',$,IFCBOOLEAN(.T.),$);
+#16094=IFCPROPERTYSINGLEVALUE('HasAnnotation',$,IFCBOOLEAN(.T.),$);
+#16095=IFCWALLTYPE('3nyPUuz0T8N8ttBBdzVsSV',$,'Retaining Wall',$,$,(#16099),$,$,$,.SOLIDWALL.);
+#16096=IFCMATERIALLAYERSET((#16098),$,$);
+#16097=IFCRELASSOCIATESMATERIAL('0csyjUZGf6cvsDi_OB45$t',$,$,$,(#16095),#16096);
+#16098=IFCMATERIALLAYER(#67,0.200000002980232,$,$,$,$,$);
+#16099=IFCPROPERTYSET('0qj7UvMfz6phazTg4X5T8e',$,'EPset_Parametric',$,(#16100));
+#16100=IFCPROPERTYSINGLEVALUE('LayerSetDirection',$,IFCLABEL('AXIS2'),$);
+#16101=IFCWALL('2YIR6tplH9fOc1F2QKsYl6',$,'Wall',$,$,#16447,#16108,$,$);
+#16102=IFCRELDEFINESBYTYPE('1MiDUdzKvDgRjyZ2qFAlxa',$,$,$,(#16101,#16154,#16226,#18157),#16095);
+#16103=IFCMATERIALLAYERSETUSAGE(#16096,.AXIS2.,.POSITIVE.,0.,$);
+#16104=IFCRELASSOCIATESMATERIAL('0EzMexHSjDV8$mJ2kPgzeU',$,$,$,(#16101),#16103);
+#16108=IFCPRODUCTDEFINITIONSHAPE($,$,(#16529,#16546));
+#16124=IFCPROPERTYSET('11ZJqTOzrDeebdXKa8oXZf',$,'EPset_Parametric',$,(#16126));
+#16125=IFCRELDEFINESBYPROPERTIES('2jjvFwgyT1f8b4DU29qLXZ',$,$,$,(#16101),#16124);
+#16126=IFCPROPERTYSINGLEVALUE('Engine',$,IFCLABEL('BlenderBIM.DumbLayer2'),$);
+#16140=IFCRELCONNECTSPATHELEMENTS('2M1NseJ3r2COl2bygNyZ2t',$,$,'BUTT',$,#264,#16101,(),(),.ATEND.,.ATPATH.);
+#16154=IFCWALL('3WM5gFSYbAax5doFPj1fRU',$,'Wall',$,$,#16506,#16165,$,$);
+#16160=IFCRELDEFINESBYPROPERTIES('3C3tS$2Ij2TuLYiiTLIRAk',$,$,$,(#16154),#16161);
+#16161=IFCPROPERTYSET('159qQGHI5BSvTPNmZRDMLi',$,'EPset_Parametric',$,(#16162));
+#16162=IFCPROPERTYSINGLEVALUE('Engine',$,IFCLABEL('BlenderBIM.DumbLayer2'),$);
+#16163=IFCRELASSOCIATESMATERIAL('3kPzaLHHb9k8Kv0GM5chT2',$,$,$,(#16154),#16164);
+#16164=IFCMATERIALLAYERSETUSAGE(#16096,.AXIS2.,.POSITIVE.,0.,$);
+#16165=IFCPRODUCTDEFINITIONSHAPE($,$,(#16576,#16600));
+#16180=IFCRELCONNECTSPATHELEMENTS('1UIlwrj1LCOeMz3_VlZ07Q',$,$,'MITRE',$,#16154,#16101,(),(),.ATSTART.,.ATEND.);
+#16226=IFCWALL('2$fDyV3e15$eYyVeVs8RK0',$,'Wall',$,$,#16422,#16237,$,$);
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+#16233=IFCPROPERTYSET('2_AbPuKmX7ZgcyB1juolO0',$,'EPset_Parametric',$,(#16234));
+#16234=IFCPROPERTYSINGLEVALUE('Engine',$,IFCLABEL('BlenderBIM.DumbLayer2'),$);
+#16235=IFCRELASSOCIATESMATERIAL('0vXrfR9bX7CuhPC$hVjIKF',$,$,$,(#16226),#16236);
+#16236=IFCMATERIALLAYERSETUSAGE(#16096,.AXIS2.,.POSITIVE.,0.,$);
+#16237=IFCPRODUCTDEFINITIONSHAPE($,$,(#16509,#16526));
+#16331=IFCRELCONNECTSPATHELEMENTS('24lT9wbRTAUQRfpk3R$wd1',$,$,'BUTT',$,#264,#16226,(),(),.ATSTART.,.ATPATH.);
+#16350=IFCRELCONNECTSPATHELEMENTS('1qTSCzqIT6X9GjPvhysl_Z',$,$,'MITRE',$,#16226,#16154,(),(),.ATSTART.,.ATEND.);
+#16418=IFCCARTESIANPOINT((-5.27499914169312,8.44999980926514,0.));
+#16419=IFCDIRECTION((0.,0.,1.));
+#16420=IFCDIRECTION((-0.999999999999924,-3.89414367418765E-07,0.));
+#16421=IFCAXIS2PLACEMENT3D(#16418,#16419,#16420);
+#16422=IFCLOCALPLACEMENT($,#16421);
+#16443=IFCCARTESIANPOINT((-7.97009992599487,4.67499923706055,0.));
+#16444=IFCDIRECTION((0.,0.,1.));
+#16445=IFCDIRECTION((1.,0.,0.));
+#16446=IFCAXIS2PLACEMENT3D(#16443,#16444,#16445);
+#16447=IFCLOCALPLACEMENT($,#16446);
+#16502=IFCCARTESIANPOINT((-7.97010040283203,8.44999885559082,0.));
+#16503=IFCDIRECTION((0.,0.,1.));
+#16504=IFCDIRECTION((3.13916473260163E-07,-0.999999999999951,0.));
+#16505=IFCAXIS2PLACEMENT3D(#16502,#16503,#16504);
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+#16512=IFCDIRECTION((0.,0.,1.));
+#16513=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#16511);
+#16514=IFCCARTESIANPOINT((0.,0.,0.));
+#16515=IFCDIRECTION((0.,0.,1.));
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+#16518=IFCEXTRUDEDAREASOLID(#16513,#16517,#16512,2.);
+#16519=IFCCARTESIANPOINT((2.69510126113892,-2.42648638959508E-07,0.));
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+#16521=IFCDIRECTION((0.707106483163231,-0.707107079209739,0.));
+#16522=IFCAXIS2PLACEMENT3D(#16519,#16520,#16521);
+#16523=IFCPLANE(#16522);
+#16524=IFCHALFSPACESOLID(#16523,.F.);
+#16525=IFCBOOLEANCLIPPINGRESULT(.DIFFERENCE.,#16518,#16524);
+#16526=IFCSHAPEREPRESENTATION(#15,'Body','Clipping',(#16525));
+#16527=IFCCARTESIANPOINTLIST2D(((4.76837158203125E-07,0.),(2.69510221481323,0.)));
+#16528=IFCINDEXEDPOLYCURVE(#16527,$,.F.);
+#16529=IFCSHAPEREPRESENTATION(#27,'Axis','Curve2D',(#16528));
+#16530=IFCCARTESIANPOINTLIST2D(((0.,0.),(0.,0.200000002980232),(2.69510223010764,0.200000002980232),(2.69510223010764,0.),(0.,0.)));
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+#16532=IFCDIRECTION((0.,0.,1.));
+#16533=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#16531);
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+#16535=IFCDIRECTION((0.,0.,1.));
+#16536=IFCDIRECTION((1.,0.,0.));
+#16537=IFCAXIS2PLACEMENT3D(#16534,#16535,#16536);
+#16538=IFCEXTRUDEDAREASOLID(#16533,#16537,#16532,2.);
+#16539=IFCCARTESIANPOINT((4.76837158203125E-07,0.,0.));
+#16540=IFCDIRECTION((-0.707107603549957,0.707105934619904,0.));
+#16541=IFCDIRECTION((0.707105946721014,0.707107615651096,-0.));
+#16542=IFCAXIS2PLACEMENT3D(#16539,#16540,#16541);
+#16543=IFCPLANE(#16542);
+#16544=IFCHALFSPACESOLID(#16543,.F.);
+#16545=IFCBOOLEANCLIPPINGRESULT(.DIFFERENCE.,#16538,#16544);
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+#16553=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#16551);
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+#16558=IFCEXTRUDEDAREASOLID(#16553,#16557,#16552,2.40000009536743);
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+#16606=IFCLOCALPLACEMENT($,#16605);
+#16845=IFCPRODUCTDEFINITIONSHAPE($,$,(#20180,#20183));
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+#17844=IFCPROPERTYSINGLEVALUE('NumberOfTreads',$,IFCCOUNTMEASURE(6.),$);
+#17845=IFCPROPERTYSINGLEVALUE('RiserHeight',$,IFCPOSITIVELENGTHMEASURE(0.142857142857143),$);
+#17846=IFCPROPERTYSINGLEVALUE('TreadLength',$,IFCPOSITIVELENGTHMEASURE(0.25),$);
+#17847=IFCPROPERTYSINGLEVALUE('NosingLength',$,IFCLENGTHMEASURE(0.),$);
+#17848=IFCINDEXEDPOLYGONALFACE((2,1,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3));
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+#17851=IFCINDEXEDPOLYGONALFACE((13,14,32,31));
+#17852=IFCINDEXEDPOLYGONALFACE((6,7,25,24));
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+#17856=IFCINDEXEDPOLYGONALFACE((8,9,27,26));
+#17857=IFCINDEXEDPOLYGONALFACE((1,2,20,38));
+#17858=IFCINDEXEDPOLYGONALFACE((16,17,35,34));
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+#17862=IFCINDEXEDPOLYGONALFACE((10,11,29,28));
+#17863=IFCINDEXEDPOLYGONALFACE((3,4,22,21));
+#17864=IFCINDEXEDPOLYGONALFACE((18,19,37,36));
+#17865=IFCINDEXEDPOLYGONALFACE((11,12,30,29));
+#17866=IFCINDEXEDPOLYGONALFACE((4,5,23,22));
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 ENDSEC;
 END-ISO-10303-21;