Each construction type is comprised of one or more material types that contain the property types listed above. This list of constructions is derived from a variety of sources, including ASHRAE, CIBSE, and others. All of these constructions and their corresponding materials are stored in an XML file. This file loosely follows the gbXML schema and it only contains tags related to constructions.
The following is a sample of a typical gbXML construction and material tags:
<Construction id="ASHIF5" surfaceType="Ceiling"> <Name>8 In. Light Weight Concrete Ceiling</Name> <Description>8 In. Light Weight Concrete Ceiling</Description> <LayerId layerIdRef="lay-ASHIF5" /> <U-value unit="WPerSquareMeterK">1.3610</U-value> </Construction> - <Layer id="lay-ASHIF5"> <MaterialId materialIdRef="mat-AM13" /> </Layer> <Material id="mat-AM13"> <Name>8 in. lightweight concrete</Name> <Description>8 in. lightweight concrete</Description> <Thickness unit="Meters">0.2032</Thickness> <Conductivity unit="WPerMeterK">0.53</Conductivity> <Density unit="KgPerCubicM">1280</Density> <SpecificHeat unit="JPerKgK">840</SpecificHeat> </Material>
The construction types in the constructions.xml file are displayed in the Construction Type dialog.
