|
|
| |
 |
Simple Roadway Design
|
Cut profiles and cross sections at user defined intervals
along an alignment.
Define and display proposed profiles along with vertical
curves.
|
 |
Define and apply roadway templates to the cross sections.
Define backslopes or pin to an offset.
Calculate cut and fill volumes based on average end areas.
|
|
Download and try our FREE working DEMO of Digital Terrain
Modeling.
|
Create or Open a Road Project.
Once you name a road project, you can cut an existing
profile or existing cross sections from an alignment (polyline)
of your choice. The purpose of the "Project" is to keep
track of files relating to a particular alignment.
Extract profile from tin.
You will be asked to select a polyline alignment. A profile
will be extracted from a TIN of your choice. This TIN
must have been created with our DTM module.
Import existing profile.
This command will import the profile that you extracted
in the above command. The dialog box for this command
allows you to set the precision for the existing profile
as well as the proposed profile that you may wish to import.
A fully annotated grid will be placed around the profile.
A user coordinate system (UCS) will be created with the
same name as the profile. You can set this UCS current
and use the section tools command to draw and label objects
in the profile. Make sure that you have the correct scale
set in the section tool dialog box.
|
Define proposed profile.
A dialog box will appear alowing you to enter PI stations
and elevations and vertical curves for your proposed alignment.
The grades are calculated and shown in the dialog box
for your information. You may enter a station and grade
and change the following elevation.
|
|
Import proposed profile.
After setting the existing profile UCS current, use this
command to import the proposed profile. The proposed profile
will overlay the existing profile.Vertical curves, grades
and tangent elevations will be labeled based on the settings
provided when you imported the existing profile.
Set profile UCS current.
Allows you to pick the UCS you wish to work in.
Define template.
You may define a template for your roadway. A template
is a cross section of the proposed road including the
foreslope. If the template is symmetrical you only need
to define the left side of the centerline.
Each surface of the template must be a polyline. First
you will be asked for a file name. This is where the template
definition will be stored. Next you will be asked to select
the profile elevation point. This is the part of the template
that will be controlled by the proposed profile (usually
the centerline crown grade). If you are using proposed
top of curb grade, you must project this point to the
centerline.
Now select a surface of the template. You will be asked
for a surface name. If the surface is not symmetrical
you will be asked to select the right side.
|
|
Continue to select surfaces till done (see illustration).
|
|
Now you will be asked to select datum points. Datum
points are required and they define the lowest part of
the template. Cut and fill volumes are calculated between
the datum surface and the existing surface (see illustration).
|
|
Import template.
Select a template file to import into the drawing.
Template locations.
A dialog box will appear allowing you to enter the start
and end station along with the template file to use.
|
|
Extract sections from tin.
Select a polyline alignment. Enter a start station. Enter
an increment to cut cross sections along (such as every
50 feet). Now you can enter any extra stations that you
would like a cross section cut at. When done entering
extra stations press enter. Now you will be asked to enter
a left swath width. This is the distance left of the alignment
that you wish the sections to start. Now you are asked
for the right swath width. This is the distance to the
right of the alignment that you wish the cross section
to extend to.
Import existing sections.
Use this command to import the existing sections that
you extracted above.
Define slopes.
A dialog box will appear allowing you to enter station
ranges and backslopes to be applied to the templates.
If a slope will not work then the template is closed upon
the the last point of the existing surface. You must be
sure that your existing surface extends far enough for
your proposed template and slopes.
Process sections.
The templates and slopes are applied to the existing sections.
Before processing sections you must do the following:
Extract existing sections.
Set template locations.
Define proposed profile.
Define slopes.
|
|
Import proposed sections.
Use this command to import the new cross sections showing
existing and proposed surfaces. A dialog box will appear
allowing you to set certain parameters. You should set
the grid width to enclose the cross section. You may set
sheet height and width to control the placement of the
sections. A user coordinate system (UCS) will be created
for each cross section with the same name as the cross
section. You can set this UCS current and use the section
tools command to draw and label objects in the section.
Make sure that you have the correct scale set in the section
tool dialog box.
Section tools.
You may draw by entering the slope (3:1), ft./ft. (0.2),
%grade (0.5), or Station and Elevation. Place and label
a manhole by station and elevation orconstruct an offset
using the vertical scale. Select a line or polyline and
Section tools will label the slope (3:1), ft./ft. (0.0156'/ft),
or %grade (0.05%). Pick a point and label a Station and
Elevation, or just an Elevation. Place a manhole and Section
tools will label the station, rim elevation, and up to
three invert elevations.
|
|
Sewer profiles.
With Sewer Profiles you can place inlets, inlet manholes
and manholes on your plan drawing by station and offset,
using user definable blocks. Sewer Profiles then places
a data block allowing you to enter important information
about the structure (such as rim and invert elevations).
Data blocks may be placed on any structure whether existing
or proposed. Sewer Profiles are drawn automatically on
your profile drawing. Just select the structures that
you want to use to create a profile and Sewer Profiles
does the rest. A sewer profile with structures annotated,
inverts labeled, and pipe lengths and grades calculated
and labeled automatically. Plan notes may also be created
from selected structures. A note containing the structure
call out, station & offset, rim elevation (or E.P. elevation
for inlets), and invert of structure is written automatically
and placed where you choose.
Section volumes.
Displays the cut and fill volumes based on average end
areas.
|
