What a vertical riser schedule provides
Elevation changes deserve their own route record because they affect physical tray arrangement differently from a horizontal run. This planner identifies where those changes occur and how much elevation must be traversed.
Calculation method
For each riser, vertical change is the absolute difference between the entered start and end elevations. The planner then determines a minimum number of conceptual vertical sections by dividing that change by the preferred maximum section size.
This is a geometric planning model. It does not assume that a specific number of tray fittings or manufactured riser pieces will be required.
Worked example
An elevation change from 2 m to 7 m is a 5 m vertical difference. With a preferred maximum vertical section of 2 m, the simplified model uses three conceptual vertical sections.
Why route position is included
Knowing only the elevation change is insufficient for documentation. Route position ties the riser to the rest of the tray schedule so the transition can be located on a drawing or coordinated with other services.
Limitations and safety
Verify actual riser geometry, tray type, supports, bends, structural attachment, cable bending requirements and access conditions using the selected system and site design.
Frequently asked questions
Can a riser go downward?
Yes. The start and end elevations can be entered in either direction.
Does the planner select vertical fittings?
No. It only models the elevation transition.
Is the preferred maximum section a code requirement?
No. It is a user-defined planning assumption.