Abstract
Amendments to "Procedure for the Analysis and Design of Ductile Reinforced Concrete Frame Buildings of Moderate Height" - R. L. Williams, published Bulletin of the N.Z.N.S.E.E. Vol. 8, No. 4, December, 1975.
Highlights
Relaxed to, say 2/3rds of this value as under these conditions it is most unlikely that plastic hinges can form at top and bottom of the column simultaneously
Special Transverse Reinforcement is required through the joint plus a distance either side equal to the columns largest dimension or the column height ^ 6 if greater
DELETE: a 50% reduction within the column joint is allowable if the joint is confined on 4 faces
Summary
Relaxed to, say 2/3rds of this value as under these conditions it is most unlikely that plastic hinges can form at top and bottom of the column simultaneously. Special Transverse Reinforcement is required through the joint plus a distance either side equal to the columns largest dimension or the column height ^ 6 if greater.
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