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Add / edit super elevation screen – Spectra Precision Survey Pro v4.6 Recon-Nomad Reference Manual User Manual

Page 427

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Roads Menu

R-419

Add / Edit Super Elevation Screen

Roads Edit Roads (New… or Edit…) Super Elevations (Add… or
Edit…)

The Add / Edit Super Elevation screen allows you to add a super
elevation to the road or edit an existing super elevation.

Start Station: is the location of the beginning of the
super elevation on the alignment.

Length / End Station : is the length of the super

elevation measured from the Start Station, or it is the end

station, depending on how the button is toggled.

Note: Keep in mind that the slope at the end of a super

elevation will continue down the road unless another
super elevation is entered to change the slope back

again. For example, a curve will typically require two

super elevations for each side of the road: one at the
beginning of the curve and one at the end.

Slope 1 / 2: is the starting and ending slopes of the road,

respectively. The starting slope must match the current slope of the

road at that station.
Parabolic Transition 1 / 2: is the length of the vertical curve that
will lead in and out of the super elevation, respectively. Parabolic

transitions are optional parts of a super elevation and result in a
smoother change going into and coming out of a super elevation,

similar to how a spiral curve is used with a horizontal curve.