Some explanatory/commentary notes on reinforced concrete detailing in accordance with the Code of Practice for Structural Use of Concrete 2004

摘要

A general review on the requirements of reinforced concrete detailing of a number of items by the Code of Practice for Structural Use of Concrete 2004 has been conducted, with discussions on the underlying principles together with comparisons with other reputable national and international codes of practice. These items include (1) omission of bends and hooks in compression anchorages; (2) limitations of laps of bars in a single section; (3) transverse reinforcements in lap zones; (4) transverse reinforcement for torsion; (5) use of 135° hooks; (6) maximum tension reinforcements in beams; (7) maximum diameter of column reinforcing bars passing through beams when columns are designed to develop plastic hinges in the end regions; (8) the "middle quarter rule" for main reinforcement lapping in columns; and (9) densified transverse reinforcements in columns at end regions. The adequacy and necessity of the detailing requirements and difficulties in fixing are discussed, together with proposal of alternatives as appropriate.