(a) Circular; or(b) Other than circular and stress analyzed experimentally by the method contained in UG-101 of Section VIII of the ASME BPVC (incorporated by reference; see § 64.2 ).
46 C.F.R. §64.25
CGD 73-172, 39 FR 22950, June 25, 1974, as amended by CGD 84-043, 55 FR 37410, Sept. 11, 1990 89 FR 50199 , 9/10/2024