One lift of a load transfer platform: a discrete body of material laid down in asingle construction operation, with its own material and thickness. A lift isdefined by thickness, not by elevation, so it carries no elevation and no extent:the plan extent is the featureExtent of the platform, which every lift shares.Contrast diggs:Geosynthetic, a sheet at a level that states its position in itsextent geometry, then in its own elevation property, and only indirectly throughheightAboveWorkingPlatform. For a lift, liftThickness and heightAboveWorkingPlatformare both mandatory and between them fix it completely: its thickness directly, andits elevation as wpElevation plus heightAboveWorkingPlatform. Reached only throughdiggs:LoadTransferPlatformType/lifts, which states the vertical invariant.
Database handle for the object. It is of XML type ID, so is constrained to beunique in the XML document within which it occurs. An external identifier for the object inthe form of a URI may be constructed using standard XML and XPointer methods. This is doneby concatenating the URI for the document, a fragment separator, and the value of the idattribute.
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<element name="LTPLift" type="diggs:LTPLiftType"><annotation><documentation>One lift of a load transfer platform: a discrete body of material laid down in a single construction operation, with its own material and thickness. A lift is defined by thickness, not by elevation, so it carries no elevation and no extent: the plan extent is the featureExtent of the platform, which every lift shares. Contrast diggs:Geosynthetic, a sheet at a level that states its position in its extent geometry, then in its own elevation property, and only indirectly through heightAboveWorkingPlatform. For a lift, liftThickness and heightAboveWorkingPlatform are both mandatory and between them fix it completely: its thickness directly, and its elevation as wpElevation plus heightAboveWorkingPlatform. Reached only through diggs:LoadTransferPlatformType/lifts, which states the vertical invariant.</documentation></annotation></element>