•6 min read
Minimum sewer slope (gradient) by pipe size: the 1-in-DN table
Minimum gradient per DN for gravity public sewers using the 1-in-DN rule (Maguire’s Rule) — as a 1:DN ratio, % and mm/m. How it differs from UK 1:40/1:80 private-drainage falls and from self-cleansing velocity (EN 752).
•6 min read
Gravity sewer gradients in the UK: minimum and maximum slopes — BS EN 752 and Sewerage Sector Guidance
How to choose the slope of a gravity sewer in the UK: self-cleansing velocity, the 1/DN rule of thumb, minimum and maximum gradients, and which framework applies (BS EN 752 and the sewerage undertaker's DCG for public sewers; Building Regulations Part H for building drainage).
•5 min read
Sewer long section to DXF — step by step
From field coordinates to a CAD-ready longitudinal profile of a gravity sewer. A concrete walkthrough: import, gradients, manholes, drop connections, dual-scale DXF export.