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Author: Ghazanfer Alikhan Bozai
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 178
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Book Description
Author: Ghazanfer Alikhan Bozai
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 178
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Book Description
Author: Stuart D. Anderson
Publisher: Transportation Research Board
ISBN: 0309098750
Category : Highway planning
Languages : en
Pages : 290
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Book Description
'TRB's National Cooperative Highway Research Program (NCHRP) Report 574: Guidance for Cost Estimation and Management for Highway Projects During Planning, Programming, and Preconstruction explores approaches to cost estimation and management designed to overcome the root causes of cost escalation and to support the development of consistent and accurate project estimates through all phases of the development process, from long-range planning, through priority programming, and through project design. NCHRP Web-Only Document 98 details the steps followed by the research team in the development of NCHRP Report 574"--Publisher's description.
Author: Steve R. Sanders
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 142
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Book Description
Author: Petroutsatou, Kleopatra
Publisher: IGI Global
ISBN: 1668477874
Category : Business & Economics
Languages : en
Pages : 265
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Book Description
In light of the recent financial crisis in Europe and the increasing importance of sustainability in construction, insights and practical guidance for financial evaluation and risk management of infrastructure projects are extremely valuable for a well-planned future. It can make a massive difference in the outcomes of construction projects that have access to the "future economic benefits" approach to asset valuation as a correct asset management accounting to prevent over and underestimation of investments and repair debt. The Financial Evaluation and Risk Management of Infrastructure Projects is a comprehensive guide for professionals and students in the fields of construction and investment, as well as financial and investment institutions. It emphasizes the importance the life cycle cost of infrastructure projects and cost-benefit analysis in optimizing investments, as well as highlighting the need for cost-effective and sustainable infrastructure projects that incorporate "value for money" construction solutions while considering all risks involved. This book is ideal for professionals in construction, investment institutions, and financial and investment institutions, as well as for students in construction and investments. With the recent financial crisis in Europe and the growing focus on sustainability in construction, this guide offers practical insights and guidance for financial evaluation and risk management of infrastructure projects.
Author:
Publisher:
ISBN:
Category : Highway planning
Languages : en
Pages : 120
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Book Description
Preliminary engineering (PE) for a highway project encompasses two efforts: planning to minimize the physical, social, and human environmental impacts of projects and engineering design to deliver the best alternative. PE efforts begin years in advance of the project's construction letting, often five years or more. An efficient and accurate method to estimate PE costs would benefit transportation departments. Typically, departments estimate PE costs as a percentage of construction costs disregarding other project-specific parameters. By analyzing 461 North Carolina Department of Transportation bridge projects and 188 roadway projects let between 2001 through 2009, the research team developed statistical models linking variation in PE costs and PE duration with distinctive project parameters. The development of a user interface application aids agency users in executing the models to predict a project's PE cost ratio. Modeling strategies included multiple linear regression, hierarchical linear models, Dirichlet process linear models, and multilevel Dirichlet process linear models (MDPLM). The 461 bridge projects exhibited a mean PE cost ratio of 27.8% (ratio of PE cost over estimated construction cost) and a mean PE duration of 66.1 months. Mean PE cost ratio for the 188 roadway projects was 11.7% with a mean PE duration of 55.1 months. Project parameters utilized in the predictive models included project scope classification such as widening or new location, dimensional variables (project length, structure length, detour length, and number of spans); geographical region; and estimated costs for construction and right of way. The MDPLM minimized the mean absolute prediction error for bridges' PE cost ratio, but interpretation of variable effects and sensitivity is difficult because of the multilevel structure. Regression modeling results are also reported since sensitivity interpretation from them is more direct.
Author: Albert Frank Kaminsky
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 246
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Book Description
Author: Douglas D. Gransberg
Publisher:
ISBN: 9780309375542
Category : Roads
Languages : en
Pages : 100
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Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) Report 826: Estimating Highway Preconstruction Services Costs presents guidance for state departments of transportation (DOTs) and other agencies for estimating preconstruction services (PCS) costs for transportation project development. PCS refers to a varied assortment of project-specific engineering and other professional services required before construction begins on a bridge, highway, or other transportation project, whether provided by agency staff or consultants. Volume 1: Guidebook addresses principal sources and components of PCS costs, PCS estimating methodologies, trends (such as changes in design and construction technology, design standards, program requirements, and professional workforce) likely to affect PCS costs, and advice on agency policies and practices that can help control program risk through improved PCS cost estimation. Accompanying Volume 1, Volume 2: Research Report documents the development, testing, validation, and packaging of an accurate, consistent, and reliable method for estimating PCS costs."--
Author: Min Liu
Publisher:
ISBN:
Category : Highway planning
Languages : en
Pages : 120
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Book Description
Preliminary engineering (PE) for a highway project encompasses two efforts: planning to minimize the physical, social, and human environmental impacts of projects and engineering design to deliver the best alternative. PE efforts begin years in advance of the project's construction letting, often five years or more. An efficient and accurate method to estimate PE costs would benefit transportation departments. Typically, departments estimate PE costs as a percentage of construction costs disregarding other project-specific parameters. By analyzing 461 North Carolina Department of Transportation bridge projects and 188 roadway projects let between 2001 through 2009, the research team developed statistical models linking variation in PE costs and PE duration with distinctive project parameters. The development of a user interface application aids agency users in executing the models to predict a project's PE cost ratio. Modeling strategies included multiple linear regression, hierarchical linear models, Dirichlet process linear models, and multilevel Dirichlet process linear models (MDPLM). The 461 bridge projects exhibited a mean PE cost ratio of 27.8% (ratio of PE cost over estimated construction cost) and a mean PE duration of 66.1 months. Mean PE cost ratio for the 188 roadway projects was 11.7% with a mean PE duration of 55.1 months. Project parameters utilized in the predictive models included project scope classification such as widening or new location, dimensional variables (project length, structure length, detour length, and number of spans); geographical region; and estimated costs for construction and right of way. The MDPLM minimized the mean absolute prediction error for bridges' PE cost ratio, but interpretation of variable effects and sensitivity is difficult because of the multilevel structure. Regression modeling results are also reported since sensitivity interpretation from them is more direct.
Author: Edmundas Kazimieras Zavadskas
Publisher: MDPI
ISBN: 3038971669
Category : Technology & Engineering
Languages : en
Pages : 495
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Book Description
This book is a printed edition of the Special Issue "Sustainability in Construction Engineering" that was published in Sustainability
Author: Bilal M. Ayyub
Publisher: CRC Press
ISBN: 9780849331084
Category : Technology & Engineering
Languages : en
Pages : 534
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Book Description
With the expansion of new technologies, materials, and the design of complex systems, the expectations of society upon engineers are becoming larger than ever. Engineers make critical decisions with potentially high adverse consequences. The current political, societal, and financial climate requires engineers to formally consider the factors of uncertainty (e.g., floods, earthquakes, winds, environmental risks) in their decisions at all levels. Uncertainty Modeling and Analysis in Civil Engineering provides a thorough report on the immediate state of uncertainty modeling and analytical methods for civil engineering systems, presenting a toolbox for solving problems in real-world situations. Topics include Neural networks Genetic algorithms Numerical modeling Fuzzy sets and operations Reliability and risk analysis Systems control Uncertainty in probability estimates This compendium is a considerable reference for civil engineers as well as for engineers in other disciplines, computer scientists, general scientists, and students.
