welcome to intersection design presented at: bentley 2009 roads and bridge conference charlotte,...
TRANSCRIPT
![Page 1: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/1.jpg)
WelcomeTo
Intersection Design
Presented at:Bentley 2009 Roads and Bridge ConferenceCharlotte, North Carolina
Presented by:Dirk Karasek
The Envision Group, Inc.
www.EnvisionCAD.com
![Page 2: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/2.jpg)
Goal
A Comprehensive Intersection Model
![Page 3: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/3.jpg)
Methods
Options• Secondary Alignments
![Page 4: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/4.jpg)
Methods
Options• Secondary Alignments• Multiple Adjoining Corridors
![Page 5: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/5.jpg)
Methods
Options• Secondary Alignments• Multiple Adjoining Corridors• Overlapping/Clipping Corridors
![Page 6: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/6.jpg)
Radius Returns All three options require radius return alignments
The multicenter curvecommand createshorizontal alignments
![Page 7: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/7.jpg)
Radius Returns All three options require radius return alignments
It also can create vertical alignments
![Page 8: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/8.jpg)
Secondary Alignment Method
Quick overview
• Templates are run perpendicular to the reference lines
![Page 9: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/9.jpg)
Secondary Alignment Method
Quick overview
• Templates are run perpendicular to the reference lines• Only 1 template is required for each roadway
![Page 10: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/10.jpg)
Secondary Alignment Method
Quick overview
• Templates are run perpendicular to the reference lines• Only 1 template is required for each roadway• All template origins are tied to reference line alignments
![Page 11: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/11.jpg)
Secondary Alignment Method
Quick overview
• Templates are run perpendicular to the reference lines• Only 1 template is required for each roadway• All template origins are tied to reference line alignments• Radius returns are defined as ‘secondary’ alignments
![Page 12: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/12.jpg)
Secondary Alignment Method
Quick overview
• Templates are run perpendicular to the reference lines• Only 1 template is required for each roadway• All template origins are tied to reference line alignments• Radius returns are defined as ‘secondary’ alignments• The template ‘bends’ at the secondary alignment
![Page 13: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/13.jpg)
Secondary Alignment Method
Quick overview
• Templates are run perpendicular to the reference lines• Only 1 template is required for each roadway• All template origins are tied to reference line alignments• Radius returns are defined as ‘secondary’ alignments• The template ‘bends’ at the secondary alignment• The radius return alignment is a horizontal control only
![Page 14: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/14.jpg)
Secondary Alignment MethodTemplate ‘bends’ at secondary alignment
Orig
in
![Page 15: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/15.jpg)
Secondary Alignment MethodTemplate ‘bends’ at secondary alignment
![Page 16: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/16.jpg)
Secondary Alignment Method
Triangulation results
![Page 17: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/17.jpg)
Secondary Alignment Method
Suitable when matching minor road to edge of major road
![Page 18: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/18.jpg)
Multiple Adjoining/Corridors Quick overview
• All template origins are tied to horiz/vert alignments
![Page 19: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/19.jpg)
Multiple Adjoining/Corridors Quick overview
• All template origins are tied to horiz/vert alignments • Templates are run perpendicular to the reference lines
![Page 20: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/20.jpg)
Multiple Adjoining/Corridors Quick overview
• All template origins are tied to horiz/vert alignments • Templates are run perpendicular to the reference lines• Templates are also run radial to the radius returns
![Page 21: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/21.jpg)
Multiple Adjoining/Corridors Quick overview
• All template origins are tied to horiz/vert alignments • Templates are run perpendicular to the reference lines• Templates are also run radial to the radius returns• A single template is used for the radius returns
![Page 22: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/22.jpg)
Multiple Adjoining/Corridors Quick overview
• All template origins are tied to horiz/vert alignments • Templates are run perpendicular to the reference lines• Templates are also run radial to the radius returns• A single template is used for the radius returns• Vertical alignments along radius returns can be edited to
control the edge of pavement or curb flowlines
![Page 23: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/23.jpg)
Multiple Adjoining/Corridors Quick overview
• All template origins are tied to horiz/vert alignments • Templates are run perpendicular to the reference lines• Templates are also run radial to the radius returns• A single template is used for the radius returns• Vertical alignments along radius returns can be edited to
control the edge of pavement or curb flowlines• Corridors can overlap and will automatically ‘clip’
underlying corridors.
![Page 24: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/24.jpg)
Multiple Adjoining/Corridors
![Page 25: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/25.jpg)
Multiple Adjoining/Corridors
Cons & Pros• Mainline and side road each require 3 or 4 unique
templates
![Page 26: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/26.jpg)
Multiple Adjoining/Corridors
Cons & Pros• Mainline and side road each require 3 or 4 unique
templates• ~ 13 corridors required
![Page 27: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/27.jpg)
Multiple Adjoining/Corridors
Cons & Pros• Mainline and side road each require 3 or 4 unique
templates• ~ 13 corridors required• User must determine template start/stop limits
![Page 28: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/28.jpg)
Multiple Adjoining/Corridors
Cons & Pros• Mainline and side road each require 3 or 4 unique
templates• ~ 13 corridors required• User must determine template start/stop limits• Corridor definitions can be complex
![Page 29: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/29.jpg)
Multiple Adjoining/Corridors
Cons & Pros• Mainline and side road each require 3 or 4 unique
templates• ~ 13 corridors required• User must determine template start/stop limits• Corridor definitions can be complex• Changes in design require revisiting many
template/station entries
![Page 30: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/30.jpg)
Multiple Adjoining/Corridors
Cons & Pros• Mainline and side road each require 3 or 4 unique
templates• ~ 13 corridors required• User must determine template start/stop limits• Corridor definitions can be complex• Changes in design require revisiting many
template/station entries• Finished model is complete with surfaces and
components
![Page 31: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/31.jpg)
Overlapping/Clipping Corridors
![Page 32: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/32.jpg)
Overlapping/Clipping Corridors
Corridors• Mainline corridor contains a single template entry
![Page 33: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/33.jpg)
Overlapping/Clipping Corridors
Corridors• Mainline corridor contains a single template entry• Sideroad corridor contains a single template entry
![Page 34: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/34.jpg)
Overlapping/Clipping Corridors
Corridors• Mainline corridor contains a single template entry• Sideroad corridor contains a single template entry• Each quadrant contains a single template entry
![Page 35: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/35.jpg)
Overlapping/Clipping Corridors
Corridors• Mainline corridor contains a single template entry• Sideroad corridor contains a single template entry• Each quadrant contains a single template entry
Sequence of events
1. The mainline ‘clips’ the sideroad model
![Page 36: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/36.jpg)
Overlapping/Clipping Corridors
Corridors• Mainline corridor contains a single template entry• Sideroad corridor contains a single template entry• Each quadrant contains a single template entry
Sequence of events
1. The mainline ‘clips’ the sideroad model
2. The quadrants ‘clip’ both the mainline and sideroad models
![Page 37: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/37.jpg)
Overlapping/Clipping Corridors
Corridors• Mainline corridor contains a single template entry• Sideroad corridor contains a single template entry• Each quadrant contains a single template entry
Sequence of events1. The mainline ‘clips’ the sideroad model2. The quadrants ‘clip’ both the mainline and sideroad
models3. A single composite surface is created
![Page 38: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/38.jpg)
Clipping CorridorsTemplate along radius returns
Orig
inO
rigin
Point controls used to target mainline or sideroad corridors
Variableslope & length
![Page 39: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/39.jpg)
Clipping CorridorsTemplates placed perpendicular or radial
Crownline
Targeted
Quadrant corridor
Edge of thru-la
ne
Targeted
Normal end-condition applied
![Page 40: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/40.jpg)
Overlapping/Clipping Corridors Contours
![Page 41: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/41.jpg)
Overlapping/Clipping Corridors
Suitable when matching minor road to edge of major road or crown to crown
![Page 42: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/42.jpg)
Overlapping/Clipping Corridors
Pros & Cons• Mainline and side road each require only 1 template
![Page 43: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/43.jpg)
Overlapping/Clipping Corridors
Pros & Cons• Mainline and side road each require only 1 template• 1 template for all quadrants
![Page 44: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/44.jpg)
Overlapping/Clipping Corridors
Pros & Cons• Mainline and side road each require only 1 template• 1 template for all quadrants• Total of 6 corridors required
![Page 45: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/45.jpg)
Overlapping/Clipping Corridors
Pros & Cons• Mainline and side road each require only 1 template• 1 template for all quadrants• Total of 6 corridors required• Easy to define corridors
![Page 46: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/46.jpg)
Overlapping/Clipping Corridors
Pros & Cons• Mainline and side road each require only 1 template• 1 template for all quadrants• Total of 6 corridors required• Easy to define corridors• Creates composite surfaces DTM(s)
![Page 47: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/47.jpg)
Overlapping/Clipping Corridors
Pros & Cons• Mainline and side road each require only 1 template• 1 template for all quadrants• Total of 6 corridors required• Easy to define corridors• Creates composite surfaces DTM(s)
![Page 48: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/48.jpg)
Overlapping/Clipping Corridors
Pros & Cons• Mainline and side road each require only 1 template• 1 template for all quadrants• Total of 6 corridors required• Easy to define corridors• Creates composite surfaces DTM(s)• Changes in design may require recreation of radius
returns
![Page 49: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/49.jpg)
Demo/Questions?
![Page 50: Welcome To Intersection Design Presented at: Bentley 2009 Roads and Bridge Conference Charlotte, North Carolina Presented by: Dirk Karasek The Envision](https://reader036.vdocument.in/reader036/viewer/2022062404/551c34185503460d398b45e6/html5/thumbnails/50.jpg)
Thank You!
Intersection Design
Presented at:Bentley 2009 Roads and Bridge ConferenceCharlotte, North Carolina
Presented by:Dirk Karasek
The Envision Group, Inc.
www.EnvisionCAD.com