All public logs

Combined display of all available logs of LID SWM Planning and Design Guide. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 13:46, 19 July 2022 JamesCowan talk contribs created page Installation of underdrains (Created page with "Underdrains Underdrains are perforated pipes that collect subsurface water and convey water out of an LID facility once it reaches capacity. Their design is determined by the drainage requirements of the feature. Construction Steps: 1. Install the underdrain to grade with a consistent slope of 0.5% to 1.0% 2. Connect overflow risers with single-elbowed ‘y’ connections or 45° elbows 3. Situate maintenance risers where siltation is expected in drain lines (such as a...")