project manager: tim brown project editor: tabatha doughty project engineer: drew furry project...
Post on 22-Dec-2015
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Project Manager: Tim BrownProject Editor: Tabatha Doughty
Project Engineer: Drew FurryProject Engineer: Jim Walter
Today’s Agenda
• Project Description & Approach• Alternative Solutions• Final Design Results
– Proposed Roadway– Horizontal & Vertical Alignment– Pavement Design– Hydraulic Design– Construction Plan– Cost Analysis
• Summary - Q & A
Project Description
• 13-acres of land • Multiple curves in the road, storage buildings,
railroad tracks and other outdoor storage• 0.6-mile road connects the main access highway
to the storage facility• Recent changes in ordinance transport have
brought up this issue
Project Description
• Challenges– Railroad crossings must be limited– Crossing can not be over a “frog” – Road must meet Navy, INDOT, and
AASHTO codes and regulations
Project Approach
• Site Assessment
- walkthrough, site survey, map overview• Existing Subsurface Conditions
- Soil assessment
- Boring samples from ATC Associates• Codes and Regulations
- challenges- must comply with Navy, AASHTO and INDOT codes and regulations
Project Approach
• Assessment of Design Constraints– Wildlife protection, subgrade conditions,
hydrological issues• Design
– Consider possible alternatives– Design appropriate solution based on criteria
Alternative Solutions
• Five alternative solutions• Developed by RH Roadways with suggestions
from client & faculty• Created Evaluation Matrix• Design of best alternative
Alternative 1 – Existing Road
Alternative 2 – Modify Existing Road
Alternative 3 – New Alignment South
Alternative 4 – New Alignment North A
Alternative 5 – New Alignment North B
Evaluation Matrix
Comparison
Existing Roadway• Roadway conditions
fair/poor• 7 RR crossings• 85-feet radius of
curvature• 10% maximum
vertical grade • Little signage
Proposed Roadway• Excellent roadway
conditions• 5 RR Crossings• 500-feet minimum
radius of curvature• 3% maximum vertical
grade• Proper signage
(posted 25mph)
Comparison
Existing Roadway• Lack of pavement
markings
• Width of 16-feet
• Average thickness of 4-inches
Proposed Roadway• Adequate markings
(centerline, edges, etc.)
• Width of Road 24-feet with shoulders and ditches
• Pavement total thickness of 10-inches
Horizontal Alignment
• Plan View Map
Typical Cross Section
Vertical Alignment
• Profile View Map
Pavement Design
•Computed an Equivalent Axel Load (EAL)– Traffic Study – 200 trucks per day each way– Used traffic data and tractor trailer dimensions
and weight for EAL design - 2.9 Million EAL– Calculated Stacker EAL – insignificant• Pavement Thickness – CBR value from ATC Associates + EAL– Asphalt Institute Manual to design 4 options
Pavement Options
Option1:• 2” Asphalt Concrete
Surface• 9” Asphalt Concrete Base
Option 3:• 2” Asphalt Concrete
Surface• 8” Asphalt Concrete Base• 6” Untreated Aggregate
Subbase
Option2:• 2” Asphalt Concrete
Surface• 15” Type III Emulsified
Asphalt Base
Option 4:• 2” Asphalt Concrete
Surface• 13.5” Type III Emulsified
Asphalt Base• 6” Untreated Aggregate
Subbase
Pavement Cost
• Data collected from INDOT website detailing their project costs for 2003.
• HMA costs include labor and equipment.
Final Pavement Design
2” Asphalt Concrete Surface 8” Asphalt Concrete Base 6” Untreated Aggregate Subbase
Hydraulic Design
• Place 3 culverts – Corrugated Metal Pipe – 12” Diameter
• Ditches– Flow of 1.27 cubic feet per second– Depth = 0.5 feet – Slope = 3:1
Culvert Locations
Construction Alternatives
• Traffic Control - Three Options• Method 1:
– Complete shutdown of road with a detour to divert traffic during construction
• Method 2:– Shut down one lane while remaining lane stays
open for traffic flow• Method 3:
– Same as method 2, save an added detour to ease traffic flow through the project area.
Traffic Detour Method Matrix
Traffic Control Method 3
Traffic Detour Route
Erosion & Sediment Control Plan
• Erosion control points of interest:– Minimum clearing and grading– Minimum erosion due to short project time– Runoff is non-existent – no present streams– After bare soil removed, silt fences will be
needed along sloped areas– Upon project completion, areas must be
seeded and slopes protected with erosion control blankets in place
Erosion Control Map
• Insert 11x17 erosion control map
Soil Management
• Borrow location• Location for cut soil to be stored• “Phase-construction”• Topsoil stockpiles• Soil testing required according to AASHTO and
INDOT Specifications
Waste Management
• Large capacity worksite dumpsters• Construction fencing• Planned stockpiling• Pavement removal
~2500 yd^2
Cost Analysis
Summary
• Project Description & Approach• Alternative Solutions• Final Design Results
– Proposed Roadway– Horizontal & Vertical Alignment– Pavement Design– Hydraulic Design– Construction Plan– Soil & Waste Management– Cost Analysis
Questions???