Updating Pavement Design Procedures for New York State

1996 ◽  
Vol 1539 (1) ◽  
pp. 51-57
Author(s):  
Hong-Jer Chen ◽  
Luis Julian Bendaña ◽  
Dan E. McAuliffe ◽  
Raymond L. Gemme
Keyword(s):  
New York ◽  
Sensitivity Analysis ◽  
Life Cycle ◽  
New York State ◽  
Design Procedure ◽  
Pavement Design ◽  
Life Cycle Costs ◽  
Past Performance ◽  
Design Variables ◽  
Pavement Thickness

New York's effort in adapting concepts from AASHTO's pavement design guide as a basis for a revised state design procedure for thickness of new and reconstructed pavements is summarized. The rationale for this revised procedure was to design more durable pavements and reduce life-cycle costs. New York's past pavement design practice and the background for the revisions are briefly described. A sensitivity analysis was conducted to identify how AASHTO design variables affect pavement thickness. Past performance of selected New York pavements was also studied. The rationale is discussed for determination of appropriate design variables, based on the sensitivity analysis, performance studies, and reviews of past and current practice. Also described is the justification of other design features, such as 50-year design life, granular subgrade, permeable base, edge drains, shorter slabs, maximum and minimum pavement thicknesses, and new dowel and tie-bar designs. Development and implementation of New York's new AASHTO-based thickness design procedure are major steps toward accomplishing the goals of building longer-lasting pavements and reducing life-cycle costs.

Sensitivity analysis of the economic model of life cycle costs of a reusable air start system

2018 ◽  
Author(s):  
Г.А. Бадиков ◽  
◽  
П.С. Орлов ◽  
К.В. Кулеш ◽  
◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Life Cycle ◽  
Economic Model ◽  
Life Cycle Costs

Life-history Studies on Proteocephalus pinguis La Rue

Parasitology ◽  
1929 ◽  
Vol 21 (4) ◽  
pp. 487-496 ◽  
Author(s):  
George W. Hunter
Keyword(s):  
New York ◽  
Life History ◽  
Life Cycle ◽  
Experimental Evidence ◽  
Digestive Tract ◽  
Lake Erie ◽  
New York State ◽  
Esox Lucius ◽  
Adult Parasite ◽  
York State

While working on parasites of fish for the New York State Conservation Department during the summer of 1928 it was possible to secure experimental evidence on the life-cycle of Proteocephalus pinguis La Rue 1911. The adult parasite lives in the digestive tract of Esox lucius Linnaeus and E. reticulatus Le Sueur where it ranges in length between 50 and 90 mm. Since La Rue (1914) gives a complete description of the adult it is not necessary to go further into the morphology of this form. Adult tapeworms for the experiments were taken from E. lucius from Lake Erie and Ellicott Creek, near Buffalo, New York, and from E. reticulatus from Barrett and China Ponds near Carmel, New York.

A Pavement Design and Rehabilitation System

1996 ◽  
Vol 1539 (1) ◽  
pp. 110-115 ◽  
Author(s):  
Jacob Uzan
Keyword(s):  
Load Distribution ◽  
Design Method ◽  
Design Procedure ◽  
Pavement Design ◽  
Equivalent Temperature ◽  
Pavement Condition ◽  
Rehabilitation System ◽  
Overlay Design ◽  
Available Information ◽  
Pavement Thickness

Because the Superpave system is not readily available for use, an interim pavement design and rehabilitation method was developed that can be used for Israeli traffic and environmental conditions. The existing method was upgraded to include most of the relevant available information and to produce reliable pavement design for the specific conditions in Israel. The upgrading concentrated on multiple topics. An axle-load distribution specific to Israeli conditions was included because analysis indicates that axle loads in Israel are typically above the standard 80-kN single axle load. The extended California bearing ratio (CBR) method was adapted to a variety of axle-load combinations by using Miner's law for damage accumulation. Converting the axle-load distribution to the standard 80-kN equivalent single axle load leads to underdesign of approximately 10 percent in pavement thickness (or to a reduction of about 70 percent of the design life). A fatigue consideration to determine the asphalt-layer thickness was added. Local temperatures were analyzed to determine an equivalent temperature for fatigue calculation. For Israeli conditions, an equivalent temperature of 14°C can be used countrywide for asphalt-layer thicknesses up to 250 mm. An overlay design method consistent with the upgraded design procedure was assembled. It includes backcalculation of layer moduli to determine the subgrade CBR and the quality of the pavement layers; pavement condition surveys to evaluate a representative effective thickness of the asphalt layer; and component-layer analysis to determine the overlay thickness.

scholarly journals Development of Smart Pavement Design Sensitivity Analysis Software for Asset Management System

2020 ◽  
Vol 5 (7) ◽  
pp. 56
Author(s):  
Byungkyu Moon ◽  
Jungyong “Joe” Kim ◽  
Hosin “David” Lee
Keyword(s):  
Sensitivity Analysis ◽  
Management System ◽  
Design Sensitivity ◽  
Pavement Management ◽  
Pavement Design ◽  
Design Sensitivity Analysis ◽  
Sensitivity Analyses ◽  
Analysis Software ◽  
Input Parameters ◽  
Pavement Thickness

There are a number of pavement management systems, but most of them are limited in providing pavement design and pavement design sensitivity information. This paper presents efforts towards the integrated pavement design and management system, by developing smart pavement design sensitivity analysis software. In this paper, the sensitivity analyses of critical design input parameters have been performed to identify input parameters which have the most significant impacts on the pavement thickness. Based on the existing pavement design procedures and their sensitivity analysis results, a smart pavement design sensitivity analysis (PDSA) software package was developed, to allow a user to retrieve the most appropriate pavement thickness and immediately perform pavement design sensitivity analysis. The PDSA software is a useful tool for managing pavements, by allowing a user to instantaneously retrieve a pavement design for a given condition from the database and perform a design sensitivity analysis without running actual pavement design programs. The proposed smart PDSA software would result in the most efficient pavement management system, by incorporating the optimum pavement thickness as part of the pavement management process.

Incorporation of Reliability into Mechanistic-Empirical Pavement Design

2000 ◽  
Vol 1730 (1) ◽  
pp. 73-80 ◽  
Author(s):  
David H. Timm ◽  
David E. Newcomb ◽  
Theodore V. Galambos
Keyword(s):  
Sensitivity Analysis ◽  
Monte Carlo ◽  
Reliability Analysis ◽  
Design Procedure ◽  
Fatigue Cracking ◽  
Pavement Design ◽  
Pavement Performance ◽  
Type I ◽  
Standard Design ◽  
Input Parameters

Pavement thickness design traditionally has been based on empiricism. However, mechanistic-empirical (M-E) design procedures are becoming more prevalent, and there is a current effort by AASHTO to establish a nationwide M-E standard design practice. Concurrently, an M-E design procedure for flexible pavements tailored to conditions within Minnesota has been developed and is being implemented. Regardless of the design procedure type, inherent variability associated with the design input parameters will produce variable pavement performance predictions. Consequently, for a complete design procedure, the input variability must be addressed. To account for input variability, reliability analysis was incorporated into the M-E design procedure for Minnesota. Monte Carlo simulation was chosen for reliability analysis and was incorporated into the computer pavement design tool, ROADENT. A sensitivity analysis was conducted by using ROADENT in conjunction with data collected from the Minnesota Road Research Project and the literature. The analysis demonstrated the interactions between the input parameters and showed that traffic weight variability exerts the largest influence on predicted performance variability. The sensitivity analysis also established a minimum number of Monte Carlo cycles for design (5,000) and characterized the predicted pavement performance distribution by an extreme value Type I function. Finally, design comparisons made between ROADENT, the 1993 AASHTO pavement design guide, and the existing Minnesota design methods showed that ROADENT produced comparable designs for rutting performance but was somewhat conservative for fatigue cracking.

scholarly journals Design as an Indicator of Tourist Destination Change: The Concept Renewal Cycle at Watkins Glen State Park

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 367
Author(s):  
Hans Klein-Hewett
Keyword(s):  
New York ◽  
Life Cycle ◽  
New York State ◽  
Evolutionary Process ◽  
Tourist Destination ◽  
Tourist Destinations ◽  
Cyclical Pattern ◽  
Proposed Model ◽  
Life Cycle Models ◽  
Renewal Cycle

For decades, the Tourism Area Life Cycle (TALC) model, its iterations, and its critics have shaped the conversation about change and adaptation at tourist destinations. However, few life cycle models consider the designed landscape as a factor in the evolutionary process or as a signifier of change. This oversight is problematic because the landscape, the aggregation of consciously designed spaces and amenities, is where tourism takes place. It is the physical manifestation of the tourist destination and therefore significantly influences how the site is organized, consumed, and evaluated. To illustrate the landscape’s importance, this article proposes a new life cycle model called the Concept Renewal Cycle (CRC), which tracks the intent of the designed landscape, the concept, to understand and document destination change. The model introduces and utilizes relevancy as the variable that determines concept success and instigates action. The proposed model and other prominent life cycle models are analyzed and compared through the case study of Watkins Glen State Park in New York state. While the other models struggle to reflect the evolution at Watkins Glen, the CRC shows resilience by eschewing TALC’s inevitable, time-based decline structure in favor of a cyclical pattern where concept revision allows for prolonged maturity.

An evaluation of anaerobic co-digestion implementation on New York State dairy farms using an environmental and economic life-cycle framework

2018 ◽  
Vol 211 ◽  
pp. 28-40 ◽  
Author(s):  
J.G. Usack ◽  
L. Gerber Van Doren ◽  
R. Posmanik ◽  
R.A. Labatut ◽  
J.W. Tester ◽  
...  
Keyword(s):  
New York ◽  
Life Cycle ◽  
New York State ◽  
Dairy Farms ◽  
Economic Life ◽  
York State ◽  
Economic Life Cycle
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