scholarly journals Dynamic Planning of Construction Site for Linear Projects

2021 ◽  
Vol 6 (2) ◽  
pp. 21
Author(s):  
Kleopatra Petroutsatou ◽  
Nikolaos Apostolidis ◽  
Athanasia Zarkada ◽  
Aneta Ntokou
Keyword(s):  
Case Studies ◽  
Construction Projects ◽  
The Body ◽  
Construction Site ◽  
Site Location ◽  
Construction Sites ◽  
Dynamic Planning ◽  
Construction Methods ◽  
The Cost ◽  
The Ideal

The area of dynamic planning of construction sites is unexplored. Although there is a large amount of scientific interest in the literature in dynamic planning of construction site layouts, with different methodologies developed, studies on construction site relocation do not exist. The purpose of this study is to cover this gap in the literature and contribute to the body of knowledge by presenting for the first time a dynamic planning of a construction site and its importance in linear construction projects and to validate this methodology through real case studies. The decisive variables that determine the appropriate site locations and the costs that arise from these choices are analyzed. The choice that maximizes the production rate of the construction site and thus minimizes the costs is further investigated. An algorithm has also been developed that estimates the cost of transportation of the equipment used in the project and thus enables the investigation of the “ideal” location that minimizes this cost. The “ideal” site location is examined according to the time schedule of the project at time intervals that are determined by the work progress. The optimization algorithm aims to minimize the cost that derives from non-productive activities. The validity of the proposed model is tested in four motorway projects. A sensitivity analysis concerning different sequences in the construction methods reveals remarkable changes in cost fluctuations depending on project size. The outcomes show that for the second, third, and fourth projects, dynamic planning is demanded, and the profit gained ranges from 1 to 1.5% of total budget cost. Financing expenses could be covered by this profit. The case studies presented are derived from linear infrastructure projects that are more sensitive to this approach because of their size and their budget that both affect the results.

scholarly journals Using Mobile Computing and Information Technology in Civil Engineering Construction Projects

2005 ◽  
Vol 2 (1) ◽  
pp. 25 ◽  
Author(s):  
M.N. Jadid ◽  
M.M. Idress
Keyword(s):  
Information Technology ◽  
Mobile Computing ◽  
Construction Industry ◽  
Construction Projects ◽  
Civil Engineering ◽  
Construction Site ◽  
Engineering Construction ◽  
Construction Methods ◽  
Engineering Construction Project ◽  
The Impact

Mobile computing technology has an enormous potential in civil engineering, mainly in the field of construction management. This paper presents an approach by using mobile computing in a civil engineering construction project, exploring how information can be exchanged at a construction site, and how billing of quantities (BOQ), drawings and specifications are shared for the benefit of the project. One of the major obstacles in using information technology (IT) when applied to civil engineering is due to the dynamic changes in the construction activities and the diversity of construction methods as compared to other industries. This has proved to be a great disadvantage when trying to give construction sites adequate IT support. Computers require infrastructure, which can be transferred easily to the head office, but rarely to the construction site itself in a systematic way. Therefore, the impact of IT on the way the construction industry actually works has not been significantly utilized. This paper consists of two main parts. The first part defines the concept of mobile computing, describes some recent research, and stresses the potential for the construction industry. The second part is focuses on an approach, implementing mobile computing in a real construction site. 

scholarly journals Physical and Chemical Properties of the Slate Aggregate

2019 ◽  
Author(s):  
Petar Radanliev
Keyword(s):  
Case Studies ◽  
Construction Projects ◽  
Construction Material ◽  
Chemical Properties ◽  
Transportation Cost ◽  
Physical And Chemical Properties ◽  
Cost Of Transport ◽  
The Cost ◽  
Physical And Chemical ◽  
And Chemical Properties

The slate aggregate has long been perceived as a substandard, low quality waste material with its physical and chemical properties not being competitive with those of the primary aggregates. It is assumed that the slate aggregate particles are not strong, that is not durable and will not compact. This research aims to address those claims and review the available literature on the performance of the slate aggregate. The review inaugurates by analysing the physical, chemical and mechanical properties of slate, before expanding into a literature review of laboratory testing’s on the effect of moisture content on density, compaction and layer thickness of slate aggregate.The paper reviews case studies of construction projects in North Wales, where the slate aggregate has been used for general fill and road building for many years. Some of the case studies include the A55 coastal road and duelling of the A5 in Anglesey (WRAP, 2004), where slate aggregate was successfully used as sub-base. The paper also investigates why many civil engineers are reluctant to use the slate aggregate and regard the material as sub-standard, flaky aggregate. The research paper reviews the potential usages and various products the slate aggregate is suitable for and satisfies the requested standards. The final topic reviewed is the cost of transporting slate aggregate compared with the cost of transport for primary aggregate and the introduction of the Primary Aggregates Tax (Parliament of the United Kingdom, 2011). The last topic includes a critical analyses of the claims that the slate aggregate a commercially viable construction material despite its remote location (Woodward et al, 2004). The transportation cost and the supply chain complexities must be evaluated prior to considering the long-term sustainability of the product (Radanliev et al1-6, 2014, 2015, 2016).

scholarly journals Quantitative Risk Assessment in Construction Disputes Based on Machine Learning Tools

Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 744
Author(s):  
Hubert Anysz ◽  
Magdalena Apollo ◽  
Beata Grzyl
Keyword(s):  
Machine Learning ◽  
Construction Projects ◽  
Quantitative Risk Assessment ◽  
Construction Site ◽  
Learning Tools ◽  
Single Product ◽  
Cost Overruns ◽  
Independent Variables ◽  
Construction Disputes ◽  
The Cost

A high monetary value of the construction projects is one of the reasons of frequent disputes between a general contractor (GC) and a client. A construction site is a unique, one-time, and single-product factory with many parties involved and dependent on each other. The organizational dependencies and their complexity make any fault or mistake propagate and influence the final result (delays, cost overruns). The constant will of the parties involved results in completing a construction object. The cost increase, over the expected level, may cause settlements between parties difficult and lead to disputes that often finish in a court. Such decision of taking a client to a court may influence the future relations with a client, the trademark of the GC, as well as, its finance. To ascertain the correctness of the decision of this kind, the machine learning tools as decision trees (DT) and artificial neural networks (ANN) are applied to predict the result of a dispute. The dataset of about 10 projects completed by an undisclosed contractor is analyzed. Based on that, a much bigger database is simulated for automated classifications onto the following two classes: a dispute won or lost. The accuracy of over 93% is achieved, and the reasoning based on results from DT and ANN is presented and analyzed. The novelty of the article is the usage of in-company data as the independent variables what makes the model tailored for a specific GC. Secondly, the calculation of the risk of wrong decisions based on machine learning tools predictions is introduced and discussed.

The Economic Analysis of Applying Top-Down Method on the Different Structure Types and Construction Methods

2014 ◽  
Vol 1044-1045 ◽  
pp. 1812-1815
Author(s):  
Guang Xiu Fang ◽  
Zheng Chao Jin
Keyword(s):  
Economic Analysis ◽  
Construction Method ◽  
Time Limit ◽  
Construction Site ◽  
Top Down ◽  
Structure Form ◽  
Economical Analysis ◽  
Construction Methods ◽  
The Right ◽  
The Cost

Through the subterranean layer’s floor height and beamless slab’s height、SPS、Top-Down method, we should check up the economical slab structure form. According to Patand method、Horizontal materials support method、Erect structure’s minimum、building‵s beforehand construction、core and lamp construction method we can choose the Top-Down method and through the construction site example’s economical choose the right method. For example cut down the time limit for the project and reduce the subterranean layer’s height、the cost of the basement so that achieve the reasonable structure form.Key words: beamless slab structure; Top-Down method; choose the method; economical analysis.

scholarly journals PROPOSING A NEURAL NETWORK MODEL TO PREDICT TIME AND COST CLAIMS IN CONSTRUCTION PROJECTS

2016 ◽  
Vol 22 (7) ◽  
pp. 967-978 ◽  
Author(s):  
Vahidreza YOUSEFI ◽  
Siamak HAJI YAKHCHALI ◽  
Mostafa KHANZADI ◽  
Ehsan MEHRABANFAR ◽  
Jonas ŠAPARAUSKAS
Keyword(s):  
Neural Network ◽  
Case Studies ◽  
Construction Industry ◽  
Network Model ◽  
Neural Network Model ◽  
Construction Management ◽  
Construction Projects ◽  
New Model ◽  
Proposed Model ◽  
The Cost

Despite broad improvements in construction management, claims still are an inseparable part of many con-struction projects. Due to huge cases of claim in construction industry, this study argues that claim management is a significant factor in construction projects success. In this study, the most possible causes of these emerging claims are identified and statistically ranked by Probability-Impact Matrix. Subsequently, by classifying claims in different cases, the most important ones are ranked in order to achieve a better understanding of claim management in each project. In this regard, a new index is defined, being able to be applied in a variety of projects with different time and cost values, to calculate the amount of possible claims in each project along with related ratios with respect to the cost and time of each claim. This study introduces a new model to predict the frequency of claims in construction projects. By using the proposed model, the rate of possible claims in each project can be obtained. This model is validated by applying it into fitting case studies in Iran construction industry.

scholarly journals Construction site layout optimization and 3D visualization through BIM tools = Visualización 3D y optimización a través de herramientas BIM aplicado a los planos de proyecto

2018 ◽  
Vol 2 (2) ◽  
pp. 35
Author(s):  
Oluseye Olugboyega ◽  
Olorunfemi Timothy Wemimo
Keyword(s):  
Construction Projects ◽  
Positive Impact ◽  
3D Visualization ◽  
Working Environment ◽  
Illustrative Case ◽  
Construction Site ◽  
Construction Methods ◽  
Site Layout ◽  
Illustrative Case Study ◽  
Construction Site Layout

Abstract Site layout plan is required for the management of the construction site and operations. A well-developed site layout has positive impact on workers, working environment, productivity and eventual success of a project. Moreover, the proposed construction methods for a project have the most significant impact on productivity, quality and cost of construction projects. This paper proposes a site layout model through BIM and construction methodology integration. An illustrative case study method was adopted for the study, where the assumptions and processes adopted in the site layout model were expounded and illustrative example was presented. The study substantiated the need to incorporate construction methods for projects in the BIM-based modelling of construction site layout plan; and the need to reinforce the possibility of re-thinking the processes of planning, construction, and management of projects. Resumen Es preciso planificar la implantación y ejecución de la construcción para una adecuada gestión de la construcción. La implantación y distribución de los espacios de acopios y servicios tiene un impacto positivo en los trabajadores, en el ambiente de trabajo, en la productividad y en el éxito del Proyecto. Tener en cuenta en la planificación de la construcción los métodos y soluciones constructivas definidos en el Proyecto de Ejecución tienen un gran impacto en la productividad, calidad y coste del Proyecto. En este estudio se propone utilizar las herramientas BIM integrando metodología de construcción para desarrollar la planificación de la implantación y ejecución de la construcción. Para ello se utiliza un caso de estudio ilustrativo en el que se exponen los supuestos y los procesos adoptados. El estudio confirma la necesidad de tener en cuenta e incorporar los métodos y soluciones constructivas en el modelo BIM de la implantación de la construcción para estudiar con antelación la planificación, la ejecución y la gestión del proyecto.

scholarly journals Exploring the Perfection Measures of Quality Management in Construction Site of Industrial and Civil Buildings

2017 ◽  
Vol 1 (3) ◽  
Author(s):  
Zhang Wei
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Rapid Development ◽  
Construction Workers ◽  
Construction Site ◽  
Construction Enterprises ◽  
Existing Problems ◽  
Project Construction ◽  
The Cost

At the present stage, China's construction industry has achieved rapid development with the rapid development of our society and economy. In the construction of our country's construction industry, scientific and rational project construction management can not only effectively improve the safety quality of construction workers, strengthen the personnel management of construction workers, effectively reduce the accidents of construction projects, but also can save the cost of construction projects and improve the economic efficiency of construction enterprises to the greatest extent. In view of this, this paper first analyzes the existing problems in the management of industrial and civil construction site and puts forward corresponding solutions.

Is the construction site a safer place under the USACE or local government guidelines? The case of Afghanistan

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mohammad Hashim Ibrahimkhil ◽  
Laith Hadidi
Keyword(s):  
Developing Countries ◽  
Local Government ◽  
Construction Industry ◽  
Construction Projects ◽  
Safety Performance ◽  
Construction Site ◽  
Infrastructure Projects ◽  
Construction Sites ◽  
Safety Practices ◽  
Content Type

PurposeThe aim of this paper is to assess the safety level of construction sites in Afghanistan following the US Army Corps of Engineers (USACE) safety practices and compare this with other construction sites in Afghanistan that follow local government safety guidelines. The USACE oversees and funds many infrastructure projects in Afghanistan, and these projects are supposed to follow the same standards implemented in the USA, including safety standards. The local government of Afghanistan also funds infrastructure projects in Afghanistan; however, these do not follow USACE best practices. This research explores the question of whether the USACE standards provide a safer construction site. The effect of the USACE standards on safety practices in construction projects is also investigated in the Afghanistan construction industry.Design/methodology/approachA literature review and other safety checklists were used to develop a safety checklist containing 104 items (questions) in 17 categories. Subsequently, the checklist was used to assess the safety performance of 57 construction projects (25 USACE projects, and 32 governmental projects). Utilizing quantitative analysis, the Spearman rank correlation coefficient (Rho) and Mann–Whitney tests were carried out for correlation and statistical disparity between USACE and governmental projects.FindingsThe safety performance level of Afghan government projects was found to be poor in relation to other developing countries, while in USACE projects it was excellent. In addition, fire prevention, safety administration, PPE, heavy equipment, and handling and storage of materials for all types of contractors were the most overlooked aspects of Afghan Government projects.Practical implicationsThe findings clearly demonstrate the deficiencies in construction sites observed during this study and also support the adoption of USACE standards in Afghanistan projects.Originality/valueTo the best of the authors’ knowledge, this study is the first to investigate the safety of construction sites in Afghanistan. The study also demonstrates the benefits of adopting international standards (USACE) to improve the safety of construction sites in a developing country such as Afghanistan. The findings provide evidence of the safety of the Afghanistan construction industry compared to other developing countries. These findings will contribute to the Afghan Government's efforts to track injury statistics.

Occupational Safety in the Construction Site: Survey and Principle in Cheng Du

2011 ◽  
Vol 94-96 ◽  
pp. 2169-2174
Author(s):  
Hong Zhang
Keyword(s):  
Construction Projects ◽  
Occupational Safety ◽  
Construction Safety ◽  
Project Managers ◽  
Construction Site ◽  
Construction Sites ◽  
Construction Company ◽  
Site Survey

This paper describes a survey of site safety organization in construction sites. It explains the principle of a successful safety organization and system for Construction Company based in Cheng Du, Si Chuan. Most employees of the company and some of the subcontractors took part in the survey more than 10 construction projects. Total, 365 valid records were obtained from the construction sites. The results of the survey provide reference to project managers and construction safety officers. Last, analysis and summary are given in this paper.

scholarly journals SAFETY OF TECHNOLOGICAL PROJECTS USING MULTI-CRITERIA DECISION MAKING METHODS / DARBUOTOJŲ SAUGOS STATYBVIETĖSE SPRENDINIŲ DAUGIATIKSLIS VERTINIMAS

2011 ◽  
Vol 17 (2) ◽  
pp. 177-183 ◽  
Author(s):  
Titas Dėjus
Keyword(s):  
Construction Projects ◽  
Point Of View ◽  
Construction Technology ◽  
Construction Site ◽  
Mathematical Methods ◽  
Construction Sites ◽  
Safety Standard ◽  
Technology Project ◽  
Safety Design

The article analyzes a construction technology project as a safety standard document for a construction site and describes the application of mathematical methods at the stages of construction and design. Due to the fact that the construction project consists of (safety point of view) the site plan and technological cards (notably these documents indicate safety design solutions), the indicators making up a comparable set of indicators to evaluate the site plan, technological cards and the entire project may vary and be diverse. Practice shows that the construction technology project or its parts thereof are to be assessed using 5 to 7 parameters, as in case of a larger quantity of indicators, the significance of each indicator becomes relatively lower and has effect on the priorities of line formation. To ensure the safety of workers on construction sites, when preparing construction technology projects, the application of experimental design is proposed, thus starting the evaluation of the quality of technological solutions to construction projects in terms of safety employing multicriteria mathematical methods. Santrauka Šiame straipsnyje analizuojamos statybos darbų technologijos projekto, kaip darbuotojų saugos norminio dokumento, rengimo sąlygos ir aplinkybės bei matematinių metodų taikymo galimybės rengiant saugos darbe sprendinius statybos paruošimo ir projektavimo etape. Kadangi statybos darbų technologijos projektas susideda (saugos darbe požiūriu) iš statybvietės plano ir technologinių kortelių (būtent šiuose dokumentuose užfiksuojami saugos darbe projektiniai sprendiniai), tai ir rodikliai, sudarantys lyginamų rodiklių aibę ir vertinantys statybvietes planą, technologines korteles ir visą projektą, gali būti labai įvairūs ir skirtingi. Praktika rodo, kad statybos darbų technologijos projektas ar jo dalys vertintini pagal 5–7 rodiklius, nes, esant didesniam rodiklių skaičiui, kiekvieno rodiklio reikšmingumas santykinai mažėja ir tai turi įtakos prioritetų eilutės formavimui. Siekiant užtikrinti darbuotojų saugą statybvietėse siūloma rengiant statybos darbų technologijos projektus taikyti variantinį projektavimą, pradėti vertinti statybos darbų technologinių projektų sprendinių kokybę saugos darbe požiūriu ir tam taikyti daugiatikslius matematinius metodus.

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