project manager: tim brown project editor: tabatha doughty project engineer: drew furry project...

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???