Torsion Constant (J) for Concrete Inverted Tee Section
Torsion Constant (J) for Concrete Inverted Tee Section
(OP)
Anyone know the hand calculation for the torsion constant (J or sometimes shown as Jt) of an inverted tee section of concrete? My college mechanics of material book only gives examples for thin wall tubes and pipes. I'd rather know how to do it by hand instead of letting a computer tell me the answer if anyone knows how.






RE: Torsion Constant (J) for Concrete Inverted Tee Section
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RE: Torsion Constant (J) for Concrete Inverted Tee Section
FYI - All I am trying to determine is the rotation of an IT beam due to an eccentric point load plus eccentric uniform loading.
I've got the formulas for the rotation, but I cannot determine what the torsional constant is that is used in determining the rotation.
I've posted a similar question before. And I plan on providing some restraint for the rotation to resolve any rotation issues, but I want to know how this beam is behaving without restraint at the application of the eccentric point load.
Any help is appreciated.
RE: Torsion Constant (J) for Concrete Inverted Tee Section
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RE: Torsion Constant (J) for Concrete Inverted Tee Section
RE: Torsion Constant (J) for Concrete Inverted Tee Section
RE: Torsion Constant (J) for Concrete Inverted Tee Section
RE: Torsion Constant (J) for Concrete Inverted Tee Section
Sorry for the typo. "t" should be cubed, "J" has unit of length4