Воздуховоды. Можно ли из расчета убрать фасонные части?

{"signature":"a50d9e4ae3ff9951ccb084301fcda430","accountUserId":-1,"values":{"object_type_id":10,"object_id":26706654,"max_level":2,"level":1,"page_size":50,"disable_comments":false,"disable_new_comment":false,"edit_mode":false,"group":null,"params":[],"comment_class":"","comment_class_callback":null,"data":[],"level_directions":{"1":"desc","2":"asc"},"level_show_send_button_always":{"1":true},"editable_comments":false,"show_online_user_count":true,"collapsible":false,"object_attributes":[],"level_form_submit_on_enter":{"1":false,"2":true},"own_user_id":null,"invert_own_user":false,"enable_subscribe":false,"disable_links":false,"window_style":null,"template_owners":[],"use_file_types":false,"use_audio_js_player":false}}