STAAD.Pro HelpTechnical Reference of STAAD CommandsTR.52 Timber Design Specifications TR.52 Timber Design Specifications This section describes the specifications required for timber design. TR.52.1 Timber Design Parameter SpecificationsThis set of commands may be used for specification of parameters for timber design. TR.52.2 Code Checking SpecificationThis command performs code checking operation on specified members based on the American Institute of Timber Construction (AITC), Canadian Standards Agency (CSA), or Eurocode (EC5) codes.TR.52.3 Member Selection SpecificationThis command performs member selection operation on specified members based on the American Institute of Timber Construction (AITC 1984) code.Parent Topic: Technical Reference of STAAD CommandsRelated ConceptsD1.G.2 Allowable Stress per AITC CodeD1.G.3 Input SpecificationRelated TasksD. To specify timber design code and parametersRelated referenceD. Available Timber Design CodesTimber Design - Whole StructuredialogDesign Parameters dialogD1.G.1 Design Operations