NRS-12477 | Diagrams showing comparison of various formulae for calculating flood discharges

These drawings appear to have been prepared by a Mr. McIllwraith before 1 March 1921. After the Second World War, Mr. McIllwraith, while working at the Metropolitan Water Sewerage and Drainage Board in Sydney, was heavily involved in design rainfall studies resulting in the first Report of the Stormwater Standard Committee of the Institution of Engineers, Australia: "Australian Rainfall and Run-off". That publication has been the basis of bridge, culvert and road drainage design in Australia for the years to 1977 when a new design was produced. The sheet bears the Public Works Plan Room No. 131/54.(SR Plan No. 2430). 1 plan. Note: This description is extracted from Concise Guide to the State Archives of New South Wales, 3rd Edition 2000.

这批图纸似乎由麦基尔韦思（McIllwraith）先生于1921年3月1日前绘制完成。第二次世界大战结束后，麦基尔韦思先生任职于悉尼大都会供水、排污与排水局（Metropolitan Water Sewerage and Drainage Board），深度参与设计降雨相关研究，促成了澳大利亚工程师协会（Institution of Engineers, Australia）雨水标准委员会的首份报告《澳大利亚降雨与径流》（Australian Rainfall and Run-off）的问世。该出版物直至1977年新版设计标准发布前，始终是澳大利亚桥梁、涵洞与道路排水工程设计的核心依据。本图纸标注有公共工程图纸室编号131/54（州规划图纸编号SR Plan No.2430），共计1份图纸。备注：本描述摘录自2000年第三版《新南威尔士州档案馆简明指南》（Concise Guide to the State Archives of New South Wales）。