46953734 horizontal alignment roadcalc

CE562 Geometric Design of HighwaysPurdue University

Tutorial 2: Creating Horizontal Alignments in ROADCALC

1. Open Eagle Point. Repeat the instructions in step 3 provided in the first lab tutorial (getting started). Open the Eagle Point project that you created in the first lab. Click on the *.dwg file on the project list and then click on OK. Alternate step: If the project list does not show your project, click the CREATE NEW PROJECT / SUB-PROJECT icon and follow steps 1.a. to 1.c.

a. Click the CREATE NEW PROJECT / SUB-PROJECT icon on the OPEN dialog window, click NEXT on the NEW window and click on the folder icon next to the Project Description space on the New Project window.

b. Select the file with the extension *.epp (Eagle Point Project) and click the OPEN button. The file should be located in the same folder you save the drawing and will have the same name as the drawing base(si) (unless you change it when you created the project).

CE562 – Tutorial 2: Creating Horizontal Alignments in RoadcalcPurdue University, Spring 2010

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Alternate

c. Click the FINISH button on the NEW PROJECT dialog window. Now the OPEN dialog window should show your Eagle Point projects. Select your project and click the OK button.

2. Open ROADCALC by clicking the road sign icon in the EAGLE POINT window.

a. Create a ROADCALC sub-project by clicking the YES button.

b. Select the EAGLE POINT project you are working from the project list (US-231 Extension). You have to fill the sub-project number, description and prototype settings to continue


EAGLE POINT TIPS:An Eagle Point project consists of at least one plan CAD graphic file. You may have more than one plan CAD graphic file that is used by different Eagle Point products. The project may contain a CAD graphic file of a subdivision, a roadway alignment, an interchange, etc.An Eagle Point sub-project is an Eagle Point project that is divided into smaller pieces. For RoadCalc™, each sub-project is one centerline horizontal alignment. You can have up to 999 RoadCalc sub-projects.

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STEP 3.b.1.STEP 3.b.2

STEP 3.b.3

STEP 3.b.4

1) Sub-project number : leave it as 001. This number helps you identify different alignments in the same project.2) Description : Use a name to identify your sub-project. For example: ALTERNATIVE 1.3) Sub-project prototype : Choose ‘Eagle Point Metric Default’ from the pull-down menu. THIS IS EXTREMELY IMPORTANT! If you fail to do this step, you may end up re-doing your entire project.4) Click on NEXT>.5) Select the project file and click on FINISH.6) Confirm the ROADCALC Sub-project that you want to open and click OK.

c. Create another sub-project by going to FILE in the Eagle Point menu and clicking on OPEN. You will use this new sub-project to design your second alternative. Warning! If


EAGLE POINT TIPS:From the OPEN dialog window you can manage your EAGLE POINT projects, drawings and ROADCALC sub-projects.

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Project

Sub-projects

STEP 3.b.6

you draw a second polyline and convert it into alignment in the same sub-project of alternative 1, ROADCALC will delete the first alignment.

3. To put the photo images underneath the other layers in the drawing in AutoCAD.a. Go to the Layers Properties menu in AutoCAD.

b. Turn off all the layers except the IMAGES layer, make it the current layer by double-clicking over the name of the layer and click Close (×).


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c. Select all the photo images. To select all the images, click once the left mouse button in a point located on a corner outside the area of the photos and click again the mouse button in another point located in the opposite corner. d. Right click the selected images, click DRAW ORDER and then click SEND TO BACK.


LAYER TIPS:

Layers are the equivalent of the overlays used in paper-based drafting and GIS. They are the primary organizational tool in AutoCAD, and you use them to group information by function and to enforce linetype, color, and other standards.

To create a new layer in your drawing click the NEW button and type its name. You can assign different colors, line types and line weights.

To draw in a specific layer, you need to select that layer and make it the current layer by pressing the CURRENT button on the dialog window.

To select all the layers, click the first layer on the list, scroll down, press the SHIFT key and click the last layer in the list.

To turn off a layer click on the light bulb icon next to the name of that layer. If the light bulb is off that indicates that the layer is off. When a layer is on, it is visible and available for plotting. When a layer is off, it is invisible and not plotted, even if Plot is on.

The snowflake and the sun icons represent the freeze and thaw layer options. You can freeze layers to speed up ZOOM, PAN, and many other operations; improve object selection performance; and reduce regeneration time for complex drawings. AutoCAD does not display, plot, hide, render, or regenerate objects on frozen layers. Freeze the layers you want to be invisible for long periods. When you thaw a frozen layer, AutoCAD regenerates and displays the objects on that layer. If you plan to switch between visible and invisible states frequently, use the On/Off setting. You can freeze layers in all viewports, in the current layout viewport, or in new layout viewports as they are created

The padlock icon indicates if the layer is lock or unlocked. You cannot edit objects on a locked layer. Locking a layer is useful if you want to view information on a layer for reference but do not want to edit objects on that layer.

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e. Go back to the LAYER PROPERTIES MANAGER and turn on all the layers.

4. To turn off all the snap options in the drawing.

a. Go to TOOLS in the AutoCAD menu and click DRAFTING SETTINGS….


SNAP TIP:Object snaps constrain point specification to exact locations, such as a midpoint or an intersection, on existing objects. Using object snaps is a quick way to locate an exact position on an object without having to know the coordinate or draw construction lines. For example, you can use an object snap to draw a line to the center of a circle or to the midpoint of a polyline segment. You can specify an object snap whenever AutoCAD prompts for a point.

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b. Click on the OBJECT SNAP tab in the DRAFTING SETTINGS dialog window. Unchecked the OBJECT SNAP ON button at the top left corner and click the OK button. If a check mark is visible it means that the snaps selected in the underneath boxes are still on.

5. Creating the horizontal alignment.a. Create a new layer called ALIGNMENT to help you manage your work in the drawing. Do not use the color red for this layer. Make it the current layer.b. Draw a polyline in your drawing connecting the starting point of your project on SR-26. The coordinates (in meters) of the starting point of the project are X = 912228.1500 and Y= 574629.9338.

1) Begin a polyline by typing “pl” in the Auto-CAD command window (bottom right of the

window) and hitting the ENTER key or by choosing the polyline icon in the DRAW menu bar.2) Type in the coordinates of the starting point: 912228.15,574629.9338 and hit the ENTER key.


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3) Click on the drawing (or type in the coordinates) the locations where you want a PI (point of intersection) in the alignment. Hit the ENTER key when you are finished drawing the polyline.

c. Go to ROADCALC and click ALIGNMENTS and CONVERT OBJECTS TO ALIGNMENT.

d. Select the polyline you want to convert into alignment by clicking on it and then hit ENTER key.e. Specify the starting point of the alignment by clicking a point near the beginning.f. Click the APPLY button. The polyline should change to the color red indicating that ROADCALC converted to alignment. ROADCALC creates a new layer in AutoCAD named CENTERLINE for the new alignment and deletes the original polyline you created.g. To move the location of a PI, follow one of the following two steps:

1) Go to ALIGNMENTS and EDIT DATA. Double-click over the PI you want to move. You can either type the new coordinates or click the blue moving crosshair icon at the upper right corner and click directly on the drawing the new location. To determine the coordinates of any point in the drawing go to TOOLS in the AutoCAD menu, click INQUIRY and then ID POINT and click on any point on the drawing that you want to know its coordinates

2) Or, click on the polyline, click over the PI (identified by a blue square) that you want to move and drag it to the new location and release the mouse button. Click on UPDATE DATA.

h. To delete a PI, go to ALIGNMENTS and EDIT DATA. Click over the PI you want to delete on the table and click on the DELETE PI icon.


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i. To insert a PI, go to ALIGNMENTS and EDIT DATA. 1) Click over the line of the preceding PI you want to insert the new PI on the table and click on the INSERT PI icon. In the example below a new PI will be inserted prior to PI 2.

2) Click on the Northing space. You can either type the coordinates for the new PI or you can select the point directly on the drawing by clicking the blue moving crosshair icon at the upper right corner of the Insert PI window and clicking on the drawing where you want the new PI.

6. Add Horizontal Curvesa. Go to ALIGNMENTS and EDIT DATA. The EDIT ALIGNMENT DATA dialog window should be active displaying all the information about the alignment you created.b. Click on the CURVE DATA button to design the horizontal curves.

c. Design the horizontal curves by directly entering the Radius value under each PI on the table (ROADCALC will calculate the other design parameters) or by selecting the


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HORIZONTAL SPEED TABLES button and select one of the default design values provided in ROADCALC. To move from PI to PI you have to click the left or the right arrow.

d. First, select the design table from the pull-down menu. Remember you are using metric units. Second, select a design speed from the speed table at the left of the window. Third, select the curve design by selecting the radius or the degree of curvature (Da). Fourth, click the CREATE CURVE button.

e. Select the PI(s) that you want to design using the selected design parameters by clicking on the PI number. You can use the same design for all the curves or you can apply different designs for each curve. To use the same design for all the curves of your alignment select all the PIs from the list by clicking the SELECT ALL button. To select more than one PI use the CONTROL KEY on your keyboard. Then click the OK button. Click YES to overwrite all the design data in ROADCALC and close the Speed Tables window.


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Step 7.d.1

Step 7.d.2

Step 7.d.3

Step 7.d.4

f. Repeat parts c to e if you need to design a curve with a different parameter. Roadcalc might ignore spirals if you used large radius for the curves. You can enter an appropriate length for the in and out spirals for each curve by directly typing for each curve. g. Go to SUPERELEVATION DATA and make sure that the SUPERELEVATION TRANSITION and ROLLOVER options are checked. Go to PARAMETERS in both options and select design values as appropriate for your design. Select an appropriate ROTATION TYPE for your design.

7. Modify Horizontal Alignmenta. If you want to modify the location of the tangent alignment, go to ALIGNMENTS, EDIT DATA.


ROADCALC TIPS:In the ‘Horizontal Curve Data’ dialogue box, you will notice a small table in the upper left corner of the window. Under this table are two arrows, which look like this: . Using these arrows, scroll through the data for each of your PI’s. If there is an overlap of curves from one PI to the next, EaglePoint will show you a message like this:

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.If you get such a message, you should change the radii of your curves such that there is no overlapping of curves. You change the radii by following the above steps, starting with “Click on the ‘Curve Data’ button”. Once you have no messages showing that there is a problem with overlapping geometry, click on the ‘Superelevation Data’ button. There will again be two arrows, and you can scroll through all your curves. If you get any messages such as the following:

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,then you need to change the curves’ radii such that there is enough room between the curves for the superelevation to transition from curve to tangent to curve. Again, you change the radii by following the above steps, starting with “Click on the ‘Curve Data’ button”. After you have curves at all PI’s, and no error messages, then close all dialogue boxes, including RoadCalc, but not EaglePoint. You have now turned your Alternative 1 into a horizontal alignment in AutoCAD.

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1) To delete a PI, follow the instructions in step 5.h.2) To insert a PI, follow the instructions in step 5.i. Remember to design a curve for the new PI.3) To move a PI, follow the instructions in step 5.g.1.

8. To draw an estimate of the ROW limits. You will need these limits for your corridor study. a. Go to ALIGNMENTS OFFSET. Click the CAD Settings icon and create a new layer called OFFSET1. Create a different layer for the second alternative.b. Type 36 in both offset spaces. Make sure the FOLLOW CURVE option is checked and that the stations reflect the entire length of your design. Hit APPLY.

c. Change the top station to 0 and type -36 in both offset spaces. Hit APPLY. Close the window.

d. If any modification is made to the horizontal alignment after creating the offset, you will have to delete the ROW limits and create the offsets again.

9. To generate alignment reports. a. Create a *.txt file using notepad. Save the *.txt file in your project folder.b. Setup EAGLE POINT by going to FILE on the menu and clicking PRINT SETUP.

c. Click the FILE radio button if you want to edit the report. Type in the *.txt file location you created in step a, or BROWSE for it by clicking the open folder icon. Then click OK.


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d. On the ROADCALC menu and go to ALIGNMENTS and GENERATE REPORTS.

e. Select the options you want ROADCALC to generate in your report and click PRINT. You have to repeat this procedure to generate the report for the second alternative. Remember to open the other sub-project before generating the report. Change the name of the report in the Eagle Point setup; otherwise all the reports will be accumulated in the same file.


ROADCALC TIP:

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10. To print the alignment graphics in AutoCAD. a. Go to FILE on the menu and the click PLOT button. b. Select the printer or plotter available from the Printer/plotter list.c. Change paper size to 11 x 17 and select the portrait orientation (click on properties and make the necessary adjustments).d. On the What to plot section, click on WINDOW to select the area of the drawing you want to plot.e. Click on Preview to see if the settings are correct for your plot.


ROADCALC TIPS:

RR

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46953734 horizontal alignment roadcalc

Documents

project file

new project subproject

new subproject

subproject number

subproject of alternative

entire project

subproject prototype

new project window