Hierarchy,Identification,Name,Quantity,Unit,rate,Subtotal,Property,Query 1,1,The Works,,,,,, 2,1.1,Slab 150mm raft,,,,,GrossVolume,"IfcSlab, location = ""GF""" 2,1.2,Columns 200x400,,,,,GrossVolume,"IfcColumn, location = ""GF""" 2,1.3,Beams 200x300,,,,,GrossVolume,"IfcBeam, location = ""1F""" 2,1.4,Blockwork 150mm on GF,,,,,NetSideArea,"IfcWall, location = ""GF""" 2,1.5,Slab 150mm on 1F,,,,,GrossVolume,"IfcSlab, location = ""1F""" 2,1.6,Blockwork 150mm on 1F,,,,,NetSideArea,"IfcWall, location = ""1F"""