Drainage field guide

Read the term against the same project drawing.

Cover level (CL)

The elevation of the finished cover surface, measured from the project datum.

On the drawing: Node schedules, drainage plans and chamber details.
Estimating connection: It gives the top of the depth calculation.
Common mistake: Confusing an elevation with a depth below ground.

Drawing and technical references

All project drawings are original Scope Economics training schematics. The fictional levels and dimensions are not taken from a live contract.

Wavin UK · inspection chamber product and installation manual
https://mediahub.wavin.com/m/4bd0c113e87c1b82/original/Wavin-OsmaDrain-Inspection-Chambers-Product-and-installation-manual.pdf

Uisce Éireann · wastewater standard details (construction reference, not this fictional stormwater design)
https://www.water.ie/sites/default/files/docs/connections/faqs/Wastewater-Standard-Details.pdf

Open the chamber lesson

Drainage field guide

Read the term against the same project drawing.

Cover level (CL)

The elevation of the finished cover surface, measured from the project datum.

On the drawing: Node schedules, drainage plans and chamber details.
Estimating connection: It gives the top of the depth calculation.
Common mistake: Confusing an elevation with a depth below ground.

Drawing and technical references

All project drawings are original Scope Economics training schematics. The fictional levels and dimensions are not taken from a live contract.

Wavin UK · inspection chamber product and installation manual
https://mediahub.wavin.com/m/4bd0c113e87c1b82/original/Wavin-OsmaDrain-Inspection-Chambers-Product-and-installation-manual.pdf

Open the chamber lesson