scholarly journals Earthquake Damage Repair Loss Estimation in New Zealand: What Other Variables Are Essential Based on Experts’ Opinions?

Buildings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 385
Author(s):  
Ravindu K. A. V. D. Kahandawa ◽  
Niluka D. Domingo ◽  
Gregory Chawynski ◽  
S. R. Uma
Keyword(s):  
New Zealand ◽  
Cost Estimation ◽  
Weighted Average ◽  
Earthquake Damage ◽  
Cost Estimating ◽  
Repair Work ◽  
Importance Index ◽  
Damage Repair ◽  
Loss Prediction ◽  
Earthquake Loss

Major earthquakes can cause extensive damage to buildings and alter both the natural and built environments. Accurately estimating the financial impact from these events is complex, and the damage is not always visible to the naked eye. PACT, SLAT, and HAZUS are some of the computer-based tools designed to predict probable damage before an earthquake. However, there are no identifiable models built for post-earthquake use. This paper focuses on verifying the significance and usage of variables that specifically need to be considered for the post-earthquake cost estimation of earthquake damage repair work (CEEDRW). The research was conducted using a questionnaire survey involving 92 participants who have experience in cost estimating earthquake damage repair work in New Zealand. The Weighted Average, Relative Importance Index (RII), and Exploratory Factor Analysis were used to analyse the data. The research verified that eleven major variables that are significant to the CEEDRW and should be incorporated to cost estimation models. Verified variables can be used to develop a post-earthquake repair cost estimation tool and can be used to improve the pre-earthquake loss prediction tools.

Factors impacting post-earthquake damage repair cost estimations

2020 ◽  
Vol 12 (1) ◽  
pp. 29-49
Author(s):  
Ravindu Kahandawa ◽  
Niluka Domingo ◽  
Gregory Chawynski ◽  
S.R. Uma
Keyword(s):  
Seismic Performance ◽  
Cost Estimation ◽  
Information Sources ◽  
Loss Estimation ◽  
Repair Cost ◽  
Loss Assessment ◽  
Repair Work ◽  
Content Type ◽  
Repair Costs ◽  
Damage Repair

Purpose Reconstruction processes after an earthquake require estimating repair costs to decide on whether to repair or rebuild. This requires an accurate post-earthquake cost estimation tool. Currently, there are no post-earthquake loss estimation models to estimate repair costs accurately. There are loss assessment tools available, namely, HAZUS, performance assessment calculation tool (PACT), seismic performance and loss assessment tool (SLAT) and seismic performance prediction tool, which have not been specifically used for post-earthquake repair cost estimation. This paper aims to focus on identifying factors that need to be considered when upgrading these tools for post-earthquake repair cost estimation. Design/methodology/approach The research was conducted as an exploratory study using a literature review, document analysis of the PACT, SLAT and HAZUS software and 18 semi-structured interviews. Findings The research identified information sources available for estimation and factors to be considered when developing estimations based on the information sources. Research limitations/implications The data was collected from professionals who were involved mostly in housing repair work in New Zealand. Therefore, impact of these repair work factors might vary in other forms of structures such as civil structures include bridges and the country as a result of varying construction details and standards. Practical implications The identified factors will be used to improve the loss estimation tools are such as PACT and HAZUS, as well as to develop a post-earthquake repair cost estimation tool. Originality/value Currently, the identified factors impacting post-earthquake damage repair cost estimations are not considered in loss estimation tools. Factors identified in this research will help to develop a more accurate cost estimation tool for post-earthquake repair work.

Digitalization of Decommissioning Cost Estimation Process for Upstream Assets

2021 ◽  
Author(s):  
M. B. C. Lah
Keyword(s):  
Decision Making ◽  
Cost Estimation ◽  
Cost Effective ◽  
Lessons Learned ◽  
Process Efficiency ◽  
Cost Estimating ◽  
Work Processes ◽  
Floating Structure ◽  
Cost Estimates ◽  
Estimation Process

The paper provides an insight on how has addressed PETRONAS has addressed its pain points on limited resources, simplified work processes with reliable auditable tool for decision making through digitalization. PETRONAS is currently performing its annual budgetary assessment for all Malaysia assets which consist of more than 300 platforms with close to 600 pipelines and other assets eg. terminals, subsea systems & floating structure. With limited timeline and resources to establish decommissioning cost, the consistency and quality is vital for estimating work to improvise process efficiency and cost effective via digitalization. The process improvement requirements are pooled and possible digitalization takeovers are studied in detail via stakeholder engagements, technical workshops and lessons learned analysis. The method is solely based on digitalization of bottoms-up cost estimation process which has been embedded in a single tool to fix and standardize all technical and commercial basis. The tool has been developed with taking into all technical and commercial aspects in decommissioning offshore assets. Twelve base options which include reefing options, cutting methodologies, cost sharing execution strategies have been embedded in the tool. Based on the digital approach, it has been proven that cost estimation process duration has been optimized up to 60% for all Class V- and Class IV decommissioning cost estimates which is equivalent to 3,600 manhours for 1000 facilities. Furthermore, consistency in cost estimation approach and robustness in developing cost estimates for multiple options for decision making has been guaranteed with the centralization cost estimating approach via digital platform. Centralized digital depository of the technical inputs, basis and assumptions are also crucial to ensure this essential data could be retrieved in the future as most decommissioning projects would only be executed during the tail end of a facility’s production life.

On Modelling of Chosen Activities during a Construction

2015 ◽  
Vol 796 ◽  
pp. 91-98
Author(s):  
Kateřina Svobodová ◽  
Jan Čermák ◽  
Čeněk Jarský
Keyword(s):  
Risk Analysis ◽  
Construction Industry ◽  
Future Development ◽  
Cost Estimation ◽  
Direct Connection ◽  
Cost Estimating ◽  
Software Application

This work will present the students project, which is being investigated by the authors and which has direct connection with the dissertations of two of them. In their work, the authors deal with the topic of standardization of time and cost estimating in construction industry. The result of the project will be a software application that can model chosen activities during a construction and process and analyse obtained data. The work will introduce activities that have been chosen as the most suitable for examining, and it will be explained why they have been chosen. The work will describe suggested approaches for measuring and calculation of the time spent on individual activities during a construction and for cost estimation. It will also deal with circumstances influencing the duration and there will be explained how useful can be risk analysis when estimating durations of activities. The conclusion will summarize results of the work and it will outline future development and planned progress.

Application of the FEMA-P58 methodology for regional earthquake loss prediction

2016 ◽  
Vol 83 (1) ◽  
pp. 177-192 ◽  
Author(s):  
Xiang Zeng ◽  
Xinzheng Lu ◽  
T. Y. Yang ◽  
Zhen Xu
Keyword(s):  
Loss Prediction ◽  
Earthquake Loss ◽  
Regional Earthquake

Using seismic isolation and energy dissipation to create earthquake-resilient buildings

2012 ◽  
Vol 45 (3) ◽  
pp. 117-122 ◽  
Author(s):  
R. L. Mayes ◽  
A. G. Brown ◽  
D. Pietra
Keyword(s):  
New Zealand ◽  
Energy Dissipation ◽  
Cost Estimation ◽  
Seismic Isolation ◽  
Base Isolation ◽  
Functional Requirements ◽  
Earthquake Insurance ◽  
Technical Issues ◽  
The Cost ◽  
Benefits And Costs

Seismic isolation with energy dissipation is a technology that has been used in New Zealand since 1978 for bridges and buildings. During this period it has seen limited use, tending to be applied mainly to historically significant buildings, or buildings that have special functional requirements. Seismic isolation has the ability to significantly improve the seismic performance of existing buildings through a seismic retrofit, or to create new earthquake-resilient buildings. Both of these applications are of greater relevance throughout New Zealand following the Canterbury earthquakes. Consequently, the consideration of seismic isolation is no longer limited to those buildings at the top end of the Importance Level spectrum. This paper examines the broad technical issues associated with isolation and energy dissipation. It discusses the benefits and costs of seismic isolation, and presents guidelines for cost estimation at the feasibility stage of projects. We will explore the cost-benefits for building owners, and discuss whether base isolation can replace earthquake insurance for the building and its contents, and business interruption insurance.

Capability Study of Cost Estimating Models for High-Technology Software Projects

2018 ◽  
Vol 7 (2) ◽  
pp. 29-39
Author(s):  
Максимилиан Мясников ◽  
Maksimilian Myasnikov
Keyword(s):  
Cost Estimation ◽  
Cost Estimating ◽  
Software Projects ◽  
Software Products ◽  
Software Market ◽  
History Of Development ◽  
Custom Software ◽  
History Of ◽  
Pros And Cons ◽  
Cocomo Ii

According to the analytical companies, software market is the most developing segment of the IT-market. Every year the number of software projects increases, including projects for hi-tech applied areas. In the article the questions of cost estimation of complex software projects are considered. The history of development of scientific cost estimating is considered, the most popular parametrical models are studied: SLIM, COCOMO II, FPA, PRICE-S and SEER-SEM. The author carried out the review of the selected techniques, analyzed their pros and cons and made the comparative analysis by the set criteria. Special attention is paid to the question of applicability of the considered parametrical models for cost estimating of the complex custom software products.

An Assessment of the Accuracy of Cost Estimation Using Building Information Modeling in Design Process

2013 ◽  
Vol 291-294 ◽  
pp. 2822-2825 ◽  
Author(s):  
Gwang Hee Kim ◽  
Hyun Young Park ◽  
Jae Min Shin
Keyword(s):  
Design Process ◽  
Cost Estimation ◽  
Building Information Modeling ◽  
Information Modeling ◽  
Design Phase ◽  
Cost Estimating ◽  
Construction Market ◽  
Building Information ◽  
Causes Of Errors ◽  
The Cost

The completion of the design drawing has not been credited in the construction market in Korea, and the modeling information of the design phase cannot be effectively used in an estimation process. Therefore, the objective of this study is to assess the cost estimating accuracy of a BIM tool in the design process to verify its applicability. Modeling was done for a building in an actual project to evaluate the applicability, from which the causes of errors of quantity take-off were derived.

scholarly journals HYBRID FORECASTING SYSTEM BASED ON CASE-BASED REASONING AND ANALYTIC HIERARCHY PROCESS FOR COST ESTIMATION

2013 ◽  
Vol 19 (1) ◽  
pp. 86-96 ◽  
Author(s):  
Sangyong Kim
Keyword(s):  
Analytic Hierarchy Process ◽  
Cost Estimation ◽  
Prediction Models ◽  
Early Stage ◽  
Case Based Reasoning ◽  
Cost Estimating ◽  
Analytic Hierarchy ◽  
Highway Projects ◽  
Hierarchy Process ◽  
Case Based

Cost estimating of highway projects with high accuracy at the early stage of project development is crucial for planning and feasibility studies. Various research have been attempted to develop cost prediction models in the early stage of a construction life cycle. This study uses the hybrid estimating tool to provide an effective cost data management for highway projects and accordingly develops a realistic cost estimating system. This study focused on the development of a more accurate estimate technique for highway projects in South Korea at the early stage using hybrid analytic hierarchy process (AHP) and case-based reasoning (CBR). Real case studies are used to demonstrate and validate the benefits of the proposed approach. It is expected that the developed CBR system is to provide decision-makers with accurate cost information to asses and compare multiple alternatives for obtaining the optimal solution and controlling cost.

scholarly journals A Generic Cost Estimating Approach for a Composite Manufacturing Process Assessment

2021 ◽  
Author(s):  
Justyna Rybicka ◽  
Teresa Purse ◽  
Brett Parlour
Keyword(s):  
Cost Estimation ◽  
Model Development ◽  
Manufacturing Processes ◽  
Cost Estimating ◽  
Estimation Model ◽  
Composite Manufacturing ◽  
Composites Manufacturing ◽  
Cost Estimation Model ◽  
High Level ◽  
The Cost

Cost estimation helps build confidence in the feasibility of the development of novel manufacturing processes. This paper focuses on the exploration of the cost estimation for novel manufacturing processes for decision support. One of the aspects of estimation is building credibility around the analysis, especially, in the early stages of planning. Cost estimating guidelines provide a good overview of the cost estimation steps but there is a requirement for guidelines for cost estimation model development. Through building on an understanding of the cost estimation principles, as well as cost estimation modelling, a high-level generic approach for process cost estimation is proposed. Further, a demonstration of a cost estimation modelling approach used for composites manufacturing in the automotive sector is provided, outlining the steps in cost estimation model development.

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