This document specifies the integrated generic resource constructs for isogeometric analysis representation. These constructs support the representation of geometric models using isogeometric analysis methods, including NURBS-based surfaces and volumes, parametric representations, and analysis-suitable geometric descriptions. The following are within the scope of this document: * the specification of isogeometric analysis geometric models and their parametric representations; * the definition of NURBS surfaces, volumes, and curves suitable for analysis; * the specification of control point structures and weight definitions for isogeometric elements; * the association of parametric spaces with physical coordinates for analysis purposes; * the definition of knot vectors and basis function specifications; * the specification of refinement operations for isogeometric analysis meshes; * the representation of boundary conditions and constraints in parametric domains; * the specification of material property assignments within isogeometric representations; * the definition of analysis-specific geometric transformations and mappings. The following are outside the scope of this document: * the definition of specific analysis solvers or numerical methods; * the specification of analysis results or solution data; * the implementation details of isogeometric analysis algorithms; * the definition of specific CAD system geometric representations; * the specification of visualization or rendering methods for analysis results; * the definition of specific file formats for isogeometric analysis data; * constraints on the mathematical validity of NURBS representations.