Ceiling height plan
The ceiling height plan is a special site plan that shows the surface layer heights of a road design in plan view . It is one of the design and execution documents in road construction and is created for traffic areas whose surface layer heights cannot be clearly stated with the aid of the height plan and the expansion cross-section . As a rule, these are urban streets, plaza-like areas or intersections .
The ceiling height plan is used during the planning phase to work out and review the street design with regard to a functioning street drainage and an optically satisfactory edge course. In the execution phase it is used, among other things, to stake out the edges.
Components
In addition to the content usually shown in site plans, such as axes , routing elements , edges and road drainage , the ceiling height plan also includes the NN heights of the surface layer or the edges (borders, lines, gutters or asphalt edge) and the associated transverse slopes . In this way, the height profile of the edges is clearly defined and the drainage of the traffic areas is made traceable. For better clarity, contour lines can also be shown.
Often there is also a combination of ceiling height plan and design plan . In addition to the height information, surface coverings, laying directions and joint patterns ( e.g. of concrete roadways) are shown in this case .
literature
- Galla, Kuhr: Skilled draftsmen . BG Teubner Verlag, Leipzig 1999, ISBN 3-519-35608-2 , pp. 382 .