JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. TR.52 Timber Design Specifications This section describes the specifications required for timber design. TR.52.1 Timber Design Parameter Specifications TR.52.2 Code Checking Specification TR.52.3 Member Selection Specification Parent topic: Technical Reference of STAAD Commands Related conceptsRelated tasksRelated reference D1.G.2 Allowable Stress per AITC Code D1.G.3 Input Specification D. To specify timber design code and parameters D. Available Timber Design Codes Timber Design - Whole Structure dialog Design Parameters dialog D1.G.1 Design Operations