Examples
Examples
Try the starting example
- Start elevation (m)
- 100
- Start grade (fraction)
- 0.02
- End grade (fraction)
- -0.01
- Curve length (m)
- 100
- Stations from curve start (m)
- 0,25,50,75,100
- Station and parabolic elevation table
- [[0,100],[25,100.40625],[50,100.625],[75,100.65625],[100,100.5]]
- Interior stationary station (m, or none)
- 66.666667
- Interior stationary elevation (m, or none)
- 100.666667
Try another scenario
- Start elevation (m)
- 110.00000000000001
- Start grade (fraction)
- 0.02
- End grade (fraction)
- -0.01
- Curve length (m)
- 100
- Stations from curve start (m)
- 0,25,50,75,100
- Station and parabolic elevation table
- [[0,110],[25,110.40625],[50,110.625],[75,110.65625],[100,110.5]]
- Interior stationary station (m, or none)
- 66.666667
- Interior stationary elevation (m, or none)
- 110.666667
Calculation method
Calculation method
Station and parabolic elevation table
z=z0+g0 x+(g1-g0)x²/(2L); dz/dx=0 at -g0 L/(g1-g0).
Interior stationary station (m, or none)
z=z0+g0 x+(g1-g0)x²/(2L); dz/dx=0 at -g0 L/(g1-g0).
Interior stationary elevation (m, or none)
z=z0+g0 x+(g1-g0)x²/(2L); dz/dx=0 at -g0 L/(g1-g0).
Symbols and units
- a
- Start elevation (m)
- b
- Start grade (fraction)
- c
- End grade (fraction)
- d
- Curve length (m)
- e
- Stations from curve start (m)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Calculation uses the entered values and stated mathematical model; quantities must use the labelled units. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. z=z0+g0 x+(g1-g0)x²/(2L); dz/dx=0 at -g0 L/(g1-g0).
Are these inputs private?
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