Spectra Precision FAST Survey Reference Manual - Manual (Page 279)

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routine designed to adapt to customers who have built their cross section processing systems around the Geodimeter
raw file format.
Stake Road
Stake Road
is one of four major commands used in highway work. This command is designed to stakeout specific
stations and offsets along a centerline. For example, if your goal is to stakeout the break points at station 87+80 on a
given road centerline, you would use Stake Road. Stake Road, therefore, is used primarily to lay out road surfaces for
construction. Stake Road is typically used to set cut and fill stakes or “blue tops” at specific stations and offsets. The
elevation used to determine the cut or fill at each offset is derived from either design files (the template interacting with
the profile and centerline) or from cross sections or from sections that are “cut” from alignments. At any specific
station, you will be guided to the desired offset and will get a cut or fill. By contrast, if the goal were to simply set
random cut and fill stakes along an alignment, at no particular station or offset, then the command Elevation Difference
would be used. If the goal is to stake out the “catch” in cut and fill, where cut slopes and fill slopes meet existing
ground, then Stake Slope would be used. However, you can also Slope Stake within Stake Road. The fourth, major
highway-oriented feature is Store Sections, which is used to gather “as-built” information on a road. In this command,
you take cross sections of data points along the road, at random or specific stations. In summary, Stake Slope starts the
cut and fill work, Stake Road directs the precise roadbed work and fine grading, Elevation Difference acts as a quick
grade check, and Store Sections produces the final confirmation of the as-built road for payment and certification. It is
highly recommended for all road stakeout that you set on "Use CL for Reference Object" within Configure, View Point
tab.
Defining the Road
The first dialog that comes up when you select Stake Road is where you define the road by selecting one of the
following options.
 Design Files:
In FAST Survey, design files include templates, centerline, profile and optionally, superelevation and
template transition files. If you wish to “clear” a file such as a superelevation file, just click it and choose Cancel.
The definitions for each of these files is covered in their own sections of this manual. Design files are recommended
for subdivision streets, access roads and simpler highway designs.
 Section Files:
Sections are made up of simple offsets and elevations that can have descriptions such as “EOP”,
“DL” or “SH” and must be accompanied by a horizontal alignment file (centerline). Every cross section is a
“snapshot” of the template at a given station. FAST Survey supports using multiple surfaces simultaneously in
Stake Road by using multiple section files or by extracting the section for each surface when all surfaces are within
a single file. Each surface can exist on its own layer with its own color for easy identification while in the Stake
Road dialog. For complex designs, with non-conforming intersections, transition lanes, special ditches, etc., it is
recommended to use cross section data if available.
 Cut Section from Alignments:
Provides the ability to extract cross sections directly from 3D polylines that exist
within FAST Survey. The first thing you need to define is the horizontal and vertical alignment files. These form
the basis for cutting the sections and determining left and right offsets from the horizontal alignment or centerline.
The centerline-defining screen is similar to the screens found in Stakeout Line and other commands.
This just starts the process. With both horizontal and vertical alignments defined, click OK. You will then be
asked to define a template point alignment (TPA) file. In this process, you must either pick or identify by