1949 Code Allowables
1949 Code Allowables
(OP)
Is anyone aware of the reasons why the 1949 ASME Code dropped the stress allowables?
1943 and 1952 had an allowable stress of 13,750 for SA-285 C for example but in 1949 the allowable was dropped to 11,000.
1943 and 1952 had an allowable stress of 13,750 for SA-285 C for example but in 1949 the allowable was dropped to 11,000.





RE: 1949 Code Allowables
RE: 1949 Code Allowables
RE: 1949 Code Allowables
RE: 1949 Code Allowables
During the war factor dropped to 4 to save steel.
Post-war the factor raised back to pre-war level.
1950 edition of Section VIII is back to a factor of 4. Presumably not too many war era vessels were experiencing problems and the committee decided that the factor of 4 was sufficient. Until the late 1990's...
jt
RE: 1949 Code Allowables
RE: 1949 Code Allowables
There are days when I wake up feeling like the dumbest man on the planet, then there are days when I confirm it.
RE: 1949 Code Allowables
Just want to add that the current safety factor is 3.5 but not every state of the US nor every other country is accepting it.