{"data":{"id":"us/49-cfr-179.400-6","jurisdiction":"us","citation":"49 CFR 179.400-6","heading":"-6 Bursting and buckling pressure.","body":"(a) [Reserved]\n(b) The outer jacket of the required evacuated insulation system must be designed in accordance with § 179.400-8(d) and in addition must comply with the design loads specified in Section 6.2 of the AAR Specifications for Tank Cars (IBR, see § 171.7 of this subchapter). The designs and calculations must provide for the loadings transferred to the outer jacket through the support system.","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 F—Specification for Cryogenic Liquid Tank Car Tanks and Seamless Steel Tanks (Classes DOT-113 and 107A)"],"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":"00cdcbd3517e78a77f817696ed99b39663f3070c139a3f8ecd13d79cffe66da3","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-179.400-5","next":"us/49-cfr-179.400-7"},"notice":"GroundRules: Original legal text. Not legal advice."}