{"data":{"id":"us/49-cfr-179.200-3","jurisdiction":"us","citation":"49 CFR 179.200-3","heading":"-3 Type.","body":"Tank built under these specifications must be circular in cross section, with formed heads designed convex outward. When specified in § 179.201-1, the tank must have at least one manway or one expansion dome with manway, and such other external projections as are prescribed herein. When the tank is divided into compartments, each compartment must be treated as a separate tank.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS","PART 179—SPECIFICATIONS FOR TANK CARS","Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"f19700b7038527aa887dd4f6c321b7d4b27a0982f6d9a6342b1f440367596de9","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-179.200-1","next":"us/49-cfr-179.200-4"},"notice":"GroundRules: Original legal text. Not legal advice."}