ft^4 408 T kip - ft 1000 ? psi 15.64 ? psi 68.08 at Solid square K= (2.25/16)a a- square side dimension ?= 0.601*8T/a at midpoint of each side a a ft 10 K ft^4 1406 T kip - ft 1000 a ? psi 33.4 Solid rectangle K= ab [ 1/3 - 0.21b/a(1 -b/ 12a )] for a>b ?= 3T/ab [ 1+0.6095(b/a)+0.8865(b/a) - 1.8023(b/a) + 0.91(b/a) ] a ft6b ft 3.5 b b/a 0.583 K ft^4 55 T kip - ft 1000 a ? psi 398.2 Solid Circle K= ?R /2?= 2T/ ?RR ft3K ft^4 127 T kip - ft 1000 ? psi 163.7 T- Section K= K1+K2 K= ab [ 1/3 - 0.21b/a(1 -b/ 12a )] K= cd [ 1/3 - 0.105d/c(1 -d/ 192c )]a a ft 8.5b b ft3c ft3d ft 3.5c K ft^4 60 K ft^4 27 K ft^4 87d I- Section a K= 2K +Kb K= ab [ 1/3 - 0.21b/a(1 -b/ 12a )] K= (1/3)cd dc a ft 8.5 b ft3c ft3d ft 3.5b K ft^4 60a K ft^4 43 K ft^4 162 Engineer: Sheet: Torsion_Properties File: 49785719.xls
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