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Moment transfer to column

Moment transfer to column

Moment transfer to column

(OP)
My company do post tension beam and slab design.but when they do design,they assume moment transfer from slab or beam to the column should not greater than 2.5M/bd2.I think that is not correct.How should I calculate that moment?any guidance will be appreciated as I am amateur in pt design.
Thanks

RE: Moment transfer to column

(OP)
sorry the formula is not 2.5M/bd2.they assume moment transfer to column should less than 2.5bd2.if the moment is larger than that they reduce the column stiffness.

RE: Moment transfer to column

Have a read thru thread167-280869: punshing shear and unbalanced moment I remember a good discussion there. For the slab design I considered very little moment transfer into the column below. For punching shear checks I use a column stiffness of at least 50%.

RE: Moment transfer to column

(OP)
thanks for the link.I will study that one.

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