The Structural Engineer > Archive > Volume 51 (1973) > Issues > Issue 11 > Discussion of Analysis and Design of Framed Tube Structures for Tall Concrete Buildings by Fazlur R.
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Discussion of Analysis and Design of Framed Tube Structures for Tall Concrete Buildings by Fazlur R. Khan and Navinchandra R. Amin

Mr. K. Kretsis (F) : I would like to ask a question with regard to tube combination by internal sub-division. The horizontal beam members of the external tube sides have a considerable stiffness, how is a comparable stiffness achieved in the horizontal beam members of the internal sub-divisions of the tubes so that they may have a substantial effect on the shear lag within the external cross-planes of the tubes?