This part of ISO 10303 specifies the interpretation of the integrated resources to satisfy requirements for representation of product shape using constructive solid geometry. The following are within the scope of this part of ISO 10303: — solid primitives; EXAMPLE 1 — sphere, right circular cone, right circular cylinder, and torus are types of solid primitives. — regularised boolean operations of union, intersection, and difference on solid primitives, manifold brep and other solids; EXAMPLE 2 — manifold solid breps, extruded face solids, revolved face solids, solid replicas, and half-space solids are other types of solids. — extruded_face_solids and swept_face_solids to define new primitive shapes; — boolean results generated by applying operators to solids. The following are outside the scope of this part of ISO 10303: — 2D geometric entities; — self-intersecting geometry; — evaluation of constructive solid geometry models to generate B-rep models.