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Cost Savings Benefits and Design Adjustments
USE OF LOCAL MATERIALS
TxDOT Districts
Dallam Sherman Hansford Ochiltree Lipscomb
Hartley Moore Roberts Hemphill
Oldham Potter Carson Gray Wheeler
Deaf Smith Randall Armstrong Donley Collings- woth
Parmer Castro Swisher Briscoe Hall
Bailey Lamb Hale Floyd Motley
Dickens King Knox Hockley Lubbock
Crosby
Garza Lynn Terry Yoakum
Gaines Dawson Borden Scurry Fisher Jones
Kent Stonewall Haskell Throck- morton
Baylor
Wilbarger Wichita
WICHITA FALLS
Clay
Archer
Young Jack
Howard Mitchell Nolan Taylor Callahan Eastland
Glasscock Sterling Coke Runnels
Reagan Irion
Cooke Grayson Fannin
Lamar
Delta
Red River PARIS
Bowie
Wise Denton Collin Hunt Hopkins
Rains Wood Upshur
Marion
Cass
Titus
Mor
ris
Camp
ATLANTA
Harrison Smith
Van Zandt
Henderson TYLER Rusk Panola
Anderson Cherokee
Freestone
Dallas DALLAS
Rockwall
Palo Pinto
Parker Tarrant
Shelby
Sabine Houston LUFKIN
Angelina
Tyler Polk
Trinity
Jasp
er
New
ton
San Jacinto
Walker
Leon
Navarro
Ellis
Hardin
FORT WORTH
Erath
Hood Johnson
Hill
Bosque Mc
Lennan Hamilton
Coryell
Bell
Falls
WACO
Robertson Madison
Milam Brazos
Grim
es
Burleson BRYAN
Washington Lee
Austin
Fayette Harris
Montgomery Liberty
BEAUMONT Orange
Jefferson
Chambers HOUSTON
Fort Bend
Brazoria
Matagorda
Wharton
Colorado
Lavaca Gonzales
Dewitt
YOAKUM
Jackson
Victoria
Calhoun Goliad
Bee Refugio
Karnes
Live Oak
Jim Wells
San Patricio
Nuceces
CORPUS CHRISTI
Kleberg
Kenedy
Willacy
Hidalgo
Brooks Jim
Hogg Zapata
Starr
PHARR
Duval
Webb
LAREDO
La Salle Dimmit
Zavala Frio Atascosa
Mc Mullen
Guadalupe
Wilson
Bexar
Medina Uvalde
Real Bandera
Kerr Kendall
Gillespie Blanco
Kinney
SAN ANTONIO
Edwards
Sutton Kimble
Mason Llano Burner
Williamson
Trayis AUSTIN
Bastrop Hays
Caldwell Comal
Brown Comanche
BROWNWOOD
Coleman
Mills
Mc Culloch
San Saba Lampasas
Concho
Menard
SAN ANGELO
Schleicher
Tom Green
Andrews Martin
Midland
Pecos
Ector
Crane Ward
Winkler Loving
Crockett
ValVarde
Upton
Terrell
Reeves Culberson
JeffDavis
Brewster Presidio
Hudspeth
El Pasd
EL PASO
ODESSA
LUBBOCK
AMARILLO
ABILENE
Cottle Foard
CHILDRESS
Fran
klin
3
Existing Local Base Supplies
Gravel Base
Shell Base
Caliche Base
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GRAVEL BASE
– High or Low PI – Very durable – At one time was the main base supply for our area – Mostly pit run – No crushers involved – Commercial Construction Producers
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SHELL BASE
Comprised of oyster shells Low PI No known source available Utilized during Rehab type projects Makes a stable sub-base Performs very well when stabilized Cement stabilized
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CALICHE BASE
Supplies are limited Performs very well when stabilized Quality very dependent on area where produced Limited supplies due to Energy Sector development
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Pet-Coke By-Product
Produced from Petroleum coke (Petcoke) being burned at electric generating plant Derived from oil refinery coker units High content of lime Light weight Lower costs
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PETCOKE COMBUSTION BY-PRODUCT
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PETCOKE COMBUSTION BY-PRODUCT
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PETCOKE COMBUSTION BY-PRODUCT
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UTILIZING EXSTING BASE MATERIALS
Most roadways built with local materials Incorporate existing base materials into rehab base layer Less or no new material needed
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Typical Section
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UTILIZING EXSTING BASE MATERIALS
US 183 Goliad County – Cement treat travel lanes – No additional base added – 8”existing base stabilized – 6% cement at 8” – Two section
• Two course surface treatment • 1-1/2” ACP overlay
Cracking issues
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RECYCLED ASPHALT PAVEMENT (RAP)
Utilizing RAP for base material Add small percentage of flex base Stabilizing with cement Minimal material costs No hauling costs (mill and dump into widening) Cracking issues
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River Gravel
Bituminous Aggregate Concrete Aggregate Limited use Seal Coat Aggregate Only locally produced material used
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SUMMARY
Local producers meet adjusted specifications Make adjustments to incorporate local materials Cost Savings
– Hauling Costs – Construction time reduced
Low volume roadways Commercial industry competition Existing materials stabilized
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