Infrastructure Works on Site: Execution, Inspection & Acceptance · Module 0
0.3 Stations, levels and scales: the basics of reading a drawing
Duration: 6:56 · In Arabic, with synced on-screen text
Ready
This lesson is finished and approved, and will be available to watch here once it is published.
Subscribe to get the lessonHow to read the station, level and scale on any longitudinal profile, and why measuring a slope or depth with a ruler on the drawing goes wrong.
Key idea: Read the written numbers; never measure from the drawing.
What the lesson covers
- Chainage (station) and its format
- Levels and the fixed reference datum
- Four level relations: depth, cover and pipe top
- Horizontal and vertical scales on a profile
- Short exercise: invert level at the next manhole
Based on the book, p. 14.
Follow my official channels
Field explanations on roads, networks, inspection and acceptance.