VDOT Pavement Policy Task Group TOPICS/PURPOSE

Develop VDOT Alternate Bid Policy

• When to Include

• Comparable Pavement Designs

• Use of Price Adjustment/Escalation Clauses

Develop Pavement Design Catalog

• New Pavements

• Rehabilitation Alternate Bid Designs

Dispute Resolution Panel

VDOT Pavement Policy Task Group Members

VDOT

• Garrett Moore, Chief Engineer

• Mohammad Mirshahi, Deputy Chief Engineer

• Jose Gomez, Director VCTIR

• Andy Babish, State Materials Engineer

Industry

• Richard Schreck, Virginia Asphalt Association

• Bob Long, VA Chapter American Concrete Pavement Assn

• Jeff Southard, VA Transportation Construction Alliance

• Ed Dalrymple, Old Dominion Highway Contractors Assn

FHWA

• Tom Jennings, Director of Project Delivery, VA Division

VDOT Pavement Policy Task Group March 21, 2014 Meeting

Bob Long pitched AC Index “unfair” to concrete

industry and should be eliminated. Supporting

documents supplied were:

• “Development and Use of Price Adjustment

Contract Provisions”, TRB AASHTO Study

• FHWA Technical Advisory “Price Indexing in

Transportation Construction Contracts”

• NCHRP Report 703, “Guide for Pavement-Type

Selection”

• ACPA’s Perspectives document, “Material Price

Adjustment Clauses”

VDOT Pavement Policy Task Group March 21, 2014 Meeting

Decision and debate on inclusion of Price

Adjustment put on “back burner” by Chief

Engineer until greenfield design catalog and

rehabilitation catalog developed.

Discussion/rebuttal from Asphalt Industry

postponed as well.

Moved forward with presentation of draft

greenfield pavement design catalog developed

by Materials Division.

Rehabilitation alternative designs will be

addressed after green field.

Five Sections

Section A: Asphalt with Agg Base

Section B: Asphalt with CTA Base

Section C: Joint Plain Concrete with Agg Base

Section D: Jointed Plain Concrete with CTA Base

Section E: Composite Pavement with CTA Base

(Asphalt on Continuously Reinforced

Concrete)

VDOT Pavement Design Catalog DRAFT

Three Traffic Levels

• 500-750 AADTT (6”)

• 750-1000 AADTT (6.5”)

• 1000-1250 AADTT (7.0)

Five Subgrade Strengths

• Impacts Asphalt Base

Thickness

• Middle thickness show

Primary Road Designs

• Reduce Asphalt Base 1”

Section A: Asphalt with Agg Base

AADTT = Annual Average Daily Truck Traffic in Design Lane

2” SMA 12.5 2” SMA 19.0

6” - 7” BM 25.0

8.0” Aggregate Base 21B

12.0” Open Graded Stone Base Layer

SUBGRADE

Geotextile Fabric

10” - 11” Asphalt

One Traffic Level

• 1250 – 2000 AADTT

• Section A maxed at 1250

Five Subgrade Strengths • Impacts Asphalt Base

Thickness

• Middle thickness show

Primary Road Designs • Reduce BM 25.0 1”

Section B: Asphalt with CTA Base

AADTT = Annual Average Daily Truck Traffic in Design Lane

2” SMA 12.5

2” SMA 19.0

7” BM 25.0

6.0” CTA

SUBGRADE

2” OGDL

13” Asphalt

Three Traffic Levels

• 500-750 AADTT (9.5”)

• 750-1000 AADTT (10.0”)

• 1000-1250 AADTT (10.5”)

Three Subgrade Strengths

• Impacts JPCP Thickness

• Middle thickness show

Shoulder Design

• Tied PCC on Interstate

• Full-depth asphalt on Primary

• JPCP +.5” on Primary designs due asphalt shoulders

Section C: JPCP with Agg Base

AADTT = Annual Average Daily Truck Traffic in Design Lane

12.0” Open Graded Stone Base Layer

9.5 – 10.5” JPCP

8.0” Aggregate Base 21B

SUBGRADE

Geotextile Fabric

Three Traffic Level

• 1250 – 1500 AADTT (11.0”)

• 1500 – 1750 AADTT (11.0”*)

• 1500 – 2000 AADTT (11.5”)

Three Subgrade Strengths

• Impacts JPCP Thickness

• Middle thickness show

Shoulder Design

• Tied PCC on Interstate

• Full-depth asphalt on Primary

• JPCP + .5” on Primary designs due asphalt shoulders

Section D: JPCP with CTA Base

AADTT = Annual Average Daily Truck Traffic in Design Lane

6.0” CTA

SUBGRADE

2” OGDL

11.0” – 11.5” JPCP

Five Traffic Levels

• 200-2500 AADTT (9”)

• 2500-3000 AADTT (10”)

• 3000-4000 AADTT (10”)

• 4000-5000 AADTT (11”)

• 5000-6000 AADTT (11”)

Three Subgrade Strengths

• Impacts CRCP Thickness

• Middle thickness show

Primary Road Designs

• Reduce Asphalt Base 1”

Section E: Composite with CTA

Base

AADTT = Annual Average Daily Truck Traffic in Design Lane

6.0” CTA

SUBGRADE

2” OGDL

9.0” – 11.0” CRCP

2” SMA 12.5 2” SMA 19.0

VDOT Pavement Design Catalog DRAFT

AADTT HMA/AGG Subbase

HMA/CTA Subbase

JPCP/AGG Subbase

JPCP/CTA Subbase

CRCP/SMAComposite

500-750 10” - 9.5” - -

750-1000 10.5” - 10” - -

1000-1250 11” - 10.5” - -

1250-1500 - 11” + 2” - 11” -

1500-1750 - 11” + 2” - 11” -

1750-2000 - 11” + 2” - 11.5” -

2000-2500 - - - - 9” + 4”

2500-3000 - - - - 10” + 4”

3000-4000 - - - - 10” + 4”

4000-5000 - - - - 11” + 4”

5000-6000 - - - - 11” + 4”

NO Asphalt Pavement options proposed above 2000 AADTT!

2” SMA 12.5 2” SMA 19.0

6” - 7” BM 25.0

8.0” Aggregate Base 21B

12.0” Open Graded Stone Base Layer

SUBGRADE

Geotextile Fabric

9.5 – 10.5” JPCP

8.0” Aggregate Base 21B

SUBGRADE

Geotextile Fabric

Section A vs. Section C

12.0” Open Graded Stone Base Layer

Section B vs. Section D

7” BM 25.0

6.0” CTA

SUBGRADE

2” OGDL

2” SMA 12.5 2” SMA 19.0

6.0” CTA

SUBGRADE

2” OGDL

11.0” – 11.5” JPCP

13” Asphalt

Section E vs. ?

6.0” CTA

SUBGRADE

2” OGDL

9.0” – 11.0” CRCP

2” SMA 12.5 2” SMA 19.0

NO Asphalt Pavement options proposed above 2000 AADTT!

SUBGRADE

VDOT Pavement Policy Task Group Post Meeting Notes – General Remarks

“Rehab type projects are brunt of VDOT work today

and for some time to come in the future.”

“VDOT as an Agency cannot afford the remove and

replace option for our existing pavements.”

“For major rehab of our pavements we need

flexibility and options to balance with funding.”

“We may consider a composite option if indeed we

get to a remove/replace option as the best solution

for a project.”

“VDOT wants economical solutions but comfortable

with some conservatism…no arguing over and inch

of material.”

VDOT Pavement Policy Task Group Post Meeting Notes – General Remarks

“The unit of measure issue (tons of HMA vs. CY of

concrete is resolved)….Resolution: HMA = tons,

HCC = CY.”

“Commodity price adjustment is unresolved at this

time and was tabled for now and will be addressed

toward end of process after we have worked

through some of the other issues such as catalog

designs.”

“Intent is to gather a bigger picture of the impacts of

this specific issue on the global context of the final

product of this process..”

Task Group Action Items

1. VDOT - Reformat draft catalog options showing

comparable sections on one sheet for ease of

comparison by Tuesday, April 1.

• Review/ensure traffic criteria consistent for comparable

options.

• Provide reformatted draft catalog to industry for comment.

2. Each industry to provide comments regarding the

proposed catalog sections A-D.

3. Each industry to provide a composite alternative

to proposed catalog section E.

4. Each industry to provide a proposed full Flexible

and/or Rigid Pavement design for Section E

conditions (i.e. AADTT and Subgrade RM)

ACPA Virginia 97% Button and

“Balanced Paving Program” Pitch