PavementDesigner.org is a comprehensive new web-based pavement design tool for streets, local roads, parking lots, and intermodal/industrial facilities. This presentation provides a tutorial on design tool components and offers various pavement design examples using those tools

Ferrebee, Eric

English

Purdue E-Pubs

PavementDesigner: A New Web-Based Pavement Design Tool105th Purdue Road SchoolWest Lafayette, INMarch 6, 2019Eric Ferrebee, P.E.Director of Technical ServicesAmerican Concrete Pavement AssociationPavementDesignerPavementDesignerProject Leaders• Industry Team Partners• Wayne Adaska, P.E.• Portland Cement Association• Brian Killingsworth, P.E.• National Ready Mix Concrete Association• Additional Support• Jim Mack, P.E. (CEMEX)• Feng Mu, PhD, P.E. (PNA Construction Technologies)• Randy Riley, P.E. & Jim Powell, P.E.• ACPA State/Chapter AssociationsOverview and Background• ACPA, NRMCA, and PCA partnership, with a contribution from the RCC Council to develop a website application to design cement-based solutions for:• Municipal Streets and Local Roads• Parking Lots• Intermodal/Industrial Facilities• Design guidance and tools for:• Jointed-Plain Concrete Pavements• Continuously Reinforce Concrete Pavement• Concrete Overlays• Composite Pavements• Roller Compacted Concrete• Cement Modified Soils• Cement-Treated Base• Full-Depth ReclamationBringing Online the Best of the Best Available Design Tools Background and Overview –• Primary audience is city, county, and consultant engineers who design pavements• Secondary audience is professors and students• Unifies design methods, providing promoters with a single source to direct target audience to for consistent answers• Fills a design void for some products• Web-based platform, appealing to existing and future generations of design engineers…• …with broad industry partner support!• FREE and easily accessible!PARKING LOTSOld Ways of Designing Parking Lots• AASHTO 93• ACI 330R-08 & 330R-18• Guide for Concrete Parking Lots• StreetPaveACI 330Parking Lot Design• ACI 330R-08 Guide based on StreetPave (PD’s predecessor) design runs• StreetPave is another accepted design methodology for Parking Lots• New guide (ACI 330-R18) is based off PD design runsParking Lot Design with PavementDesigner• PavementDesigner’sParking design uses a slightly modified version of the Street’s Module for the sake of simplicity• Allows for various design lives, reliabilities, and percent slabs cracked at the end of the design life Parking Lot Design with PavementDesigner• Design a bus terminal (ACI Spectrum-C) that serves ~50 buses a day• Assume 20 year design life• Existing subgrade is clayMUNICIPAL STREETS & LOCAL ROADSMunicipal Street Design with PavementDesigner• Overlays• Bonded and Unbonded• On Asphalt and Concrete• Full-Depth Concrete• JPCP• RCC• CRCP• Composite PavementsOther Ways of Designing Municipal Streets• AASHTO 93• Pavement ME• ACI 325.12R-02• Guide for Design of Jointed Concrete Pavements for Streets and Local Roads• StreetPaveAASHTO 93• Wholly empirical – AASHO Road Test• Limited inference space:• Materials• Structural sections• Soils• TrafficDon’t Just Take My Word…“The current design guide and its predecessors were largely based on design equations empirically derived from the observations AASHTO’s predecessor made during road performance tests completed in 1959-60. Several transportation experts have criticized the empirical data thus derived as outdated and inadequate for today’s highway system. In addition, a March 1994 DOT Office of Inspector General report concluded that the design guide was outdated and that pavement design information it relied on could not be supported and validated with systematic comparisons to actual experience or research.”…this is why Pavement ME exists!AASHTOWare Pavement ME Design• Developed for  Highways • NOT street, road, parking lot, etc.• Complex • ExpensiveState Agency, 19%County, 44%Town, 32%Other, 1%Federal, 3% AASHTO tools are being developed for these owners…JPCP Calibration – BIG INF. SPACE!LTPP GPS-3 & RPPR JPCP SectionsLTPP SPS-2, MnROAD, & AASHO JPCP SectionsAASHTO 93 vs. MEAASHTO Pavement MEAASHTO 9350+ million load reps1.1 million load repsWide range of structural and rehabilitation designsLimited structural sections1 climate/2 yearsAll climates over 20-50 years1 set of materialsNew and diverse materialsOUTPUTS, OUTPUTS, OUTPUTS!!!ACI 325• Limited design charts• New guide based on PavementDesigner runsPavementDesigner for Roadways• Roots date back to the 1960s PCA Method• Tailored for streets and roads• Failure modes are cracking and erosionMunicipal Street Design with PavementDesigner• Design for Overland Parkway with ~100 trucks/day• Existing Subgrade is poorly graded silt (A-5)Highway Design with PavementDesigner• 7,860 trucks (~20M ESALs)• 90% Reliability• 5% Slabs Cracked• 6 lane facility• R-Value = 20• MOR = 630 psi• EPCC = 3,500,000 psi• Edge Support• HMA Subbase = 1”• Cement Stb Subgrade = 6”• K = 160 psi/in• Design:• AASHTO 93 = 11”Highway Design with PavementDesigner• 7,860 trucks (~20M ESALs)• 90% Reliability• 5% Slabs Cracked• 6 lane facility• R-Value = 20• MOR = 630 psi• EPCC = 3,500,000 psi• Edge Support• HMA Subbase = 1”• Cement Stb Subgrade = 6”• K = 160 psi/in• Design:• AASHTO 93 = 11”• PavementDesigner = 8.5”• Pavement ME = 9”Differences Between Parking and Street Design• Simplicity in Parking:• Limited Spectrums (for now)• Growth Rate = 0%• Directional Dist = 100%• Design Lane Dist = 100%• Fibers not allowed• Edge support assumed to be yes• Only allows 1 subbase layerINTERMODAL DESIGNIntermodal Design?What Designs are Available for Heavy Intermodal/Industrial Vehicles• ACI 330.2R-17 – Guide for the Design and Construction of Concrete Site Paving for Industrial and Trucking Facilities• Uses design tables (Mainly for Trucks)• Lists additional design software:• ACPA StreetPave• Pavement ME• TCPavements / Optipave• ACPA AirPaveIntermodal Design with PavementDesigner• Design for a CAT 986 Loader• 130,000 lb• Wheel base = 12.5 ft• Axle width = 10 ft• Tire Pressure = 90 psiWhat About Overlay Design?• PavementDesigner Overlay Design Procedure• Utilizes JPCP design with modification to account for existing surface layer’s condition and thickness• Links out to the BCOA-ME• Best method available• Incorporates ACPA BCOA and 6x6x6 designsIncreasing in Use!1 square yard = 0.84 square meters051015202530351993 1999 2004 2009 2010 2011 2012 2013 2014 2015 2016 2017MILLIONSSY OF THIN (<6 IN.) CONCRETE OVERLAYSYearly SY Cumulative SYLots of Guidance Available…Concrete OverlaysNewest Resource Detailing Performance• Detailing overlays with up to 35 years of performance!Guide to All Things Overlays!• Overlay types and uses• Evaluation & selection• Design guidance• Miscellaneous design details• Overlay materials selection• Work zones under traffic• Key points for overlay construction• Accelerated construction• Specification considerations• Repairs of overlays• Free download at:www.cptechcenter.org

PavementDesigner: A New Web-Based Pavement Design Tool

https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=4391&amp;context=roadschool

PavementDesigner: A New Web-Based Pavement Design Tool

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