ADA Training - mnltap.umn.edu · 3 Overview Overview • Scoping Review • Multiple Alignment •...
Transcript of ADA Training - mnltap.umn.edu · 3 Overview Overview • Scoping Review • Multiple Alignment •...
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ADA TrainingOutside In Design
2018MnDOT
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Introduction
Contact Info
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• Todd Grugel - [email protected] - 651-366-3531• Tim Hruska – [email protected] - 507-288-3923
http://www.dot.state.mn.us/ada/construction.html
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Overview
Overview• Scoping Review• Multiple Alignment• Grade Adjustments• Minor Adjustments
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Definition
What is NOT Outside In Design?
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Definition
• How do we get from there to here • What tools are available in the toolbox
66’ ROW
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Scoping Review
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•Know parameters•Understand ramifications•Establishing Typical Section
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Establish Tie-in
• ROW
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Establish Tie-in
• Establish PAR• 2/3 PAR 1/3 Boulevard
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Establish Tie-in
• Doorways• Steps• Match steps within 4:
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Establish Tie-in
• Don’t sacrifice • Road criteria
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Establish Tie-in
• Pedestrian Access
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Establish Tie-in
• Exception – Entire Block could be raised
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Establish Tie-in
• Establish Sidewalk Profile• Where it goes does not matter, just establish sidewalk first
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Centerline Profile
• Set tie in locations• Create centerline profile• Develop corridor model with centerline• Review cross sections
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Tool Box
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Cross Slope
• Vary Cross Slope• 1% to 3%• Consistent Thru Block
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Tool Box
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Offset Crown
• At Lane lines• 12’ lane makes 0.5 foot difference• Can shift further to make more difference•
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Offset Crown
• Hard Tie in• 12’ lane makes 0.5 foot difference
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Offset Crown
• 1% up• 3% down• Over 4 - 12’ lanes = 0.96 feet
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Tool Box
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Shoulder Slopes
• 1%-5%
• Change from 2% slope to 5% slope over 10’ = 0.3 feet
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Shoulder Slopes
• How to create
• Curb profile
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Tool Box
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Boulevard Slopes
• 1%-5%
• Up to 8% for short distances
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Boulevard Slopes
• Amenity Zone
• Lights
• Stamped concrete
• Car door swings
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Tool Box
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Curb Heights
• Most 6”
• 8” rarely used, only in no parking
• Use 4” at low point constraints
• Raising curb line 2” can save about 4% in blvd cross slope 4”
6”1.0%
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Vertical PI’s
• Use in low speed conditions
• MnDOT / State Aid Standards
• Elimination of curves
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Profile Overview
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Recipe for Success
• Great Scoping
• Establish Typical Section
• Cross Slope
• Offset Crown
• Shoulder Slopes
• Boulevard Slopes
• Curb Heights
• Vertical PI’s
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Questions
Todd Grugel - [email protected] - 651-366-3531
Tim Hruska – [email protected] 507-288-3923