west sacramento avenue modifications presented by: justin deknoblough rusty d’anna leo villicana...
Post on 22-Dec-2015
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West Sacramento Avenue Modifications
Presented By:Justin DeKnoblough
Rusty D’annaLeo VillicanaTodd OrangeShane Winton
Israel Patterson
~Providing Tomorrows Vision Today~
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“Our goal at Horizon Engineering is to design quality projects that intertwine creativity, sustainability, and economic feasibility in order to provide tomorrows vision today.”
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Project Location
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Who is using RAC?
• CIWMB (California Integrated Waste Management Board) has awarded more than 60 grants totaling $4.2 million between January and April of this year alone.
• Many of these grants help first-time or limited-RAC users, including but not limited to San Clemente, Fremont, Rancho Cordova, Brea, San Fernando, Galt, Ripon and Nevada City.
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• Individuals, businesses, local governments, universities, school districts, park districts, and qualified California Indian tribes can be awarded these grants.
• City of Thousand Oaks using RAC since 1991.
• To date, Thousand Oaks has used rubber from 1.3 million discarded tires.
Who is using RAC? (cont’d)
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Why Rubberized Asphalt?
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About the ProductRubberized Asphalt Concrete
•Over 30 years of research and testing has gone into the development of RAC.
•Performance
•The life cycle RAC of is twice that of standard asphalt concretes in roadway applications.
•There is a reduction in traffic noise.
•Increases tire traction
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Cost Analysis
• Based on a ten mile stretch of freeway in Arizona (I-40) and current trends
1.) A 5 mile section consisting of standard AC took 2 years to complete at $45 / yd.
• After 9 years of service this section displayed major signs of distress
2.) An adjacent 10 mile stretch of highway using RAC took 4 months to complete at $10 /yd
• After 15 years the 10 mile section still looks great.
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Applications
• TDA (tire derived aggregates) can be used in combination with
concrete for reduced strength applications.• Slope stabilization• Indoor and outdoor tracks.• TDA can be used for school yard fill.
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Why use RAC?
• Heritage Research Institute conducted a TCLP (Toxic Characteristic Leachability Procedure) study per EPA standards SW846-1311 and SW846-351. The leachate was tested for heavy metals, volatiles, semivolatiles, organics, and PAH’s (Polynuclear Aromatic Hydrocarbons) to determine how safe the HMA, and RAC mix designs were in terms of ground water contamination.
• The results for all leachate tests per EPA standards had levels BDL (Below Detection Limits) ranging form 2.0-.005 μg/L for Barium, Arsenic, Mercury, Lead, and other heavy metals.
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Why use RAC?
California currently Generates 40 million scrap tires annually.Of which about 75% are put back to work for the community through…
•TDA (Tire Derived Aggregates)•RAC (Rubberized Asphalt Concrete)
The remaining 10 million tires end up either stockpiled or in the landfill or are being dumped illegally.
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Environmental Benefits
• Reduction in land fill volume !!
• Controlled insect population!!• Assured ground water safety!!• Reduction the worlds carbon
footprint!!
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ProblemRoad Condition: Transverse, longitudinal, and
alligator cracking along the road. Potholes due to heavy traffic (12,996 Vehicles/day) High need of maintenance due to
an average daily traffic of 12,996
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Road Congestion Limited roadway driving space on
West Sacramento Ave. Heavy flow of traffic especially during
the hours of: 11:00am to 2:00pm 4:00pm to 8:00pm
CSU Chico students complain about
arriving late to class due to the heavy traffic and limited roadway driving space. Students prefer to take other longer routes instead of having to deal with this problem.
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Roadway Driveways Driveways:
1. Residents
2. Businesses
3. College Dorms:Esken, Mechoopda,
and Konkow
– Short site distances from driveways could create a traffic hazard
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Railroad Intersection A potentially hazardous condition
exists! Traffic stops on the railroad
tracks constantly by physical observation due to:
1. Back up of traffic from turning vehicles onto North Cedar Street
2. High volume of pedestrian and bicycle traffic directly associated with commuting Chico State students
3. Bike crossings from the bike path that runs parallel to the railroad
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Accident Data• 1 accident in 2003• No accidents associated with the back up of
traffic due to left turning vehicles onto North Cedar Street
• No pedestrian incidents along this section of road
• Dorm and business residents have no concerns about driveway site distances along West Sacramento Avenue
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Conclusion From Findings:
• Overlay the existing road for a quieter, less-maintenance-required roadway for the City of Chico
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Design Alternatives
• Alternative #1: Widen West Sacramento Avenue to a four lane road
• Alternative #2: Add a center turn lane down West Sacramento Avenue
• Alternative #3: Rubberized asphalt overlay of the existing corridor
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Plan View of West Sacramento Avenue, Chico California
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Typical Street Section
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Typical Pavement Section
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Specifications of Rubberized Asphalt Concrete
Consists of mixing gap graded aggregate and asphalt rubber binder
• Spread and compact the mixture
• 7 to 9 percent by mass of dry aggregate in the asphalt rubber binder/aggregate mix
• Cannot be below 55 degrees Fahrenheit to apply rubberized asphalt
• Regular asphalt layer must exist below the layer of rubberized asphalt concrete
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Crumb Rubber Modifier
• Crumb rubber modifier is also referred to as the rubber binder
• Rubber binder is made from a combination of scrap tire and natural rubber
• No more than 0.01% of wire in the mix
• No more than 0.05% fabric in the mix
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Monthly Averages & Records for Chico, CA °F | °C
Month Average Low Average High Average Precip. Record Low Record High
January 35° 54° 5.17 in 12° (1937) 77° (1920)
February 39° 60° 4.5 in 16° (1989) 82° (1920)
March 42° 65° 4.32 in 23° (1971) 93° (1914)
April 45° 72° 1.59 in 27° (1922) 98° (1926)
May 51° 80° 0.91 in 30° (1984) 108° (1910)
June 57° 88° 0.47 in 38° (1986) 115° (1961)
July 61° 93° 0.05 in 40° (1981) 117° (1972)
August 59° 92° 0.16 in 38° (1978) 116° (1914)
September 55° 88° 0.59 in 35° (1986) 114°
(1988)
October 47° 79° 1.34 in 23° (1971) 107° (2001)
November 40° 63° 3.5 in 20° (1916) 91° (1936)
December 35° 54° 3.63 in 11° (1932) 76° (1998)
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Summary Environmental Advantages
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Summary Cost Benefits Initial Cost Differences
HMA: $10,000
RAC: $13,500
8 Year Cost Differences
HMA: $20,000 RAC:
$13,500
RAC costs approximately 35% more than HMA initially
However, in the long run RAC will prove to cost less than HMA
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Summary Technological Resources
We used AutoCAD 2006 3D to design our roadway profiles and typical cross-sections
We used Microsoft Excel to create graphs and tables
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Summary Outside Collaboration Partners
To everyone involved in this process, thank you!
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Summary Implementation of Engineering Design
We designed the typical roadway cross-sections using current Caltrans design procedures
We incorporated current Caltrans design specifications into the RAC-G overlay design
We calculated the roadway layers (RAC/HMA/AB/AS) by utilizing current design practices learned in our transportation class
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Summary Effective Use of the Engineering Process
Stuff
More stuff
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Summary Brainstorming Approaches
+
Flowcharts ResearchOutside Collaboration
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Special Thanks To: Rachel Aviles GIS Analyst for City of
Chico Dr. Ding Cheng, Ph.D.,P.E. Assistant
Professor California Pavement Preservation Center at California State University, Chico
Alex Peterson, Hydraulics Engineer , California Department of Transportation, Caltrans
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References
[1] http://thenumbersguru.com/wp-content/uploads/2006/07/Tire%20fire.jpg
[2] http://images.jupiterimages.com/common/detail/45/92/23119245.jpg
[3] http://www.abc.net.au/reslib/200710/r190100_713879.jpg
[4] http://www.sheppardsoftware.com/images/animalpics/rat2.jpg
[5] http://accessories.us.dell.com/sna/productdetail.aspx?sku=a0492003&cs=04&c=us&l=en
[6] http://office.microsoft.com/en-us/excel/FX100487621033.aspx
[7] http://www.dot.ca.gov/hq/esc/
[8] http://www.chico.ca.us/
[9] http://www.ecst.csuchico.edu/__depts/ce/Faculty_Staff/Members/Ding_Cheng.html
[10] http://h20331.www2.hp.com/hpsub/cache/301430-0-0-225-121.html
[11] http://asymptotia.com/wp-images/2007/08/homer-simpson-wallpaper-brain-1024.jpg
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Questions?