| Attribute | Type | Defined By | 
|---|
| item_number | INTEGER | structural_frame_item | 
| item_name | label (STRING) | structural_frame_item | 
| item_description | text (STRING) | structural_frame_item | 
| section_classification | label (STRING) | section_profile | 
| cardinal_point | cardinal_point_ref (INTEGER) | section_profile | 
| mirrored | LOGICAL | section_profile | 
| overall_depth | positive_length_measure_with_unit (ENTITY) | section_profile_t_type | 
| flange_width | positive_length_measure_with_unit (ENTITY) | section_profile_t_type | 
| flange_thickness | positive_length_measure_with_unit (ENTITY) | section_profile_t_type | 
| web_thickness | positive_length_measure_with_unit (ENTITY) | section_profile_t_type | 
| root_radius | positive_length_measure_with_unit (ENTITY) | section_profile_t_type | 
| flange_slope | ratio_measure_with_unit (ENTITY) | section_profile_t_type | 
| web_slope | ratio_measure_with_unit (ENTITY) | section_profile_t_type | 
| edge_radius | positive_length_measure_with_unit (ENTITY) | section_profile_t_type |