圆形井筒斜防水套管展开图计算法介绍

本文着重介绍板金工展开非标准管件斜防水套管的计算方法和绘图方法,这种情况在给排水设计圆形井筒泵房时经常会遇到。本计算方法尤其适用于作现场施工图设计时,在缺乏有关的参考资料,推导计算公式又很费时间的情况下。笔者通过多年施工图设计的实践,将上述计算方法和绘图方法作了归纳总结,并编制成计算程序,供同行参考应用。

Calculation of Developed View of the Skew Water tight Sleeve in Circular Shaft

This article introduces the calculating and drawing method for the sheetmetal work of non standard skew water tight sleeve.This method is widely used in the design of the circular shaft pumping house in water and wastewater works and shows its suitability specially in the site design,when the relevant references are not in hand and the deriving of a formula is difficult and time wasted,which has been proved over the years in the practices of construction drawing design.