The Structural Engineer > Archive > Volume 56 (1978) > Issues > Issue 12 > Correspondence on Moment Transfer and the Ultimate Capacity of Slab Column Structures by A.E. Long,
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Correspondence on Moment Transfer and the Ultimate Capacity of Slab Column Structures by A.E. Long, D.W. Kirk and D.J. Cleland

In this paper some important conclusions are drawn from a limited number of 1/3 scale tests. Some of these are dependent on the use of a scale factor, which the authors took as ƒÄ = 1.2 when comparing their test results on a 62 mm thick model with calculations of shear capacity to CP 1 10. This should be 1.3 for 150 mm slabs according to Table 14 in the February 1976 Amendment to CP 110. Furthermore, this table is applicable only to the practical range of slab thickness down to 150 mm. The relevant scale law from beam test results (4ãh) would indicate that a ƒÄ value of 1.5 is appropriate for 62 mm slabs. Thus the 25% increase in ultimate shear stress proposed in the paper corresponds to the effect of neglecting the scale factor difference between 62 mm and 150 mm slabs. S.G.S. Feneron The importance of the slab/column connection