https://newtonexcelbach.com/2026/09/11/as-3600-public-comment-draft-and-py_rc-design/Newton Excel Bach, not (just) an Excel Blogen2026-09-11T04:48:03+00:00AS 3600 public comment draft and py_RC DesignReinforced Concrete, AS 3600, Python, PyXLL, crack width, biaxial bending, UDFs, Eurcode 2, Alternative concrete stress blocks, py_RC Design Functions