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03482cam a2200445Ia 4500 001 6ABDFA9640C011DF814D4D3DA8D7520A 003 SILO 005 20100519080509 008 100323s2010 iaua bt s000 0 eng d 035 $a (OCoLC)567565178 040 $a UIG $c UIG $d SILO $d IOZ $d SILO 043 $a n-us-ia 050 4 $a TE228.5 $b .L44 2010 088 $a TR-586 100 1 $a Lee, Hosin David. 245 1 $a Pavement thickness design for local roads in Iowa / $c by Hosin David Lee, Yongjoo Thomas Kim and Jeremy Purvis. 260 $a Iowa City, Iowa : $b Public Policy Center, University of Iowa, $c 2010. 300 $a 1 v. (various pagings) : $b ill. (some col.) ; $c 28 cm. 500 $a "February 2010." 504 $a Includes bibliographical references (p. 68-70). $b 19 513 $a Final report TR-586. 520 $a Three pavement design software packages were compared with regards to how they were different in determining design input parameters and their influences on the pavement thickness. StreetPave designs the concrete pavement thickness based on the PCA method and the equivalent asphalt pavement thickness. The WinPAS software performs both concrete and asphalt pavements following the AASHTO 1993 design method. The APAI software designs asphalt pavements based on pre-mechanistic/empirical AASHTO methodology. First, the following four critical design input parameters were identified: traffic, subgrade strength, reliability, and design life. The sensitivity analysis of these four design input parameters were performed using three pavement design software packages to identify which input parameters require the most attention during pavement design. Based on the current pavement design procedures and sensitivity analysis results, a prototype pavement design and sensitivity analysis (PD&SA) software package was developed to retrieve the pavement thickness design value for a given condition and allow a user to perform a pavement design sensitivity analysis. The prototype PD&SA software is a computer program that stores pavement design results in database that is designed for the user to input design data from the variety of design programs and query design results for given conditions. The prototype Pavement Design and Sensitivity Analysis (PA&SA) software package was developed to demonstrate the concept of retrieving the pavement design results from the database for a design sensitivity analysis. This final report does not include the prototype software which will be validated and tested during the next phase. 530 $a Also available via the Internet. 500 $a Performed by the University of Iowa, Public Policy Center. 536 $a Sponsored by the Iowa Highway Research Board $f TR-586 650 0 $a Low-volume roads $z Iowa $x Design and construction. 650 7 $a Thickness. $2 trt 650 0 $a Pavements $z Iowa $x Computer programs. 700 1 $a Kim, Yongjoo Thomas. 700 1 $a Purvis, Jeremy. 710 1 $a Iowa. $b Highway Research Board. 710 2 $a University of Iowa. $b Public Policy Center. 856 41 $u http://www.iowadot.gov/operationsresearch/reports/reports_pdf/hr_and_tr/reports/TR-586%20Final.pdf 941 $a 4 952 $l IAOX771 $d 20221029020844.0 952 $l OVUX522 $d 20171223023718.0 952 $l USUX851 $d 20160825054136.0 952 $l Z7OX851 $d 20100405115957.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=6ABDFA9640C011DF814D4D3DA8D7520A 994 $a 02 $b IOZInitiate Another SILO Locator Search