Assessment of the impact of destabilizing factors on implementation of investment and construction projects

Development of design documentation for a future construction project gives rise to a number of issues with the main one being selection of manpower for structural units of the project’s overall implementation system. Well planned and competently staffed integrated structural construction units will help achieve a high level of reliability and labor productivity and avoid negative (extraordinary) situations during the construction period eventually ensuring improved project performance. Research priorities include the development of theoretical recommendations for enhancing reliability of a structural unit staffed as an integrated construction crew. The author focuses on identification of destabilizing factors affecting formation of an integrated construction crew; assessment of these destabilizing factors; based on the developed mathematical model, highlighting the impact of these factors on the integration criterion with subsequent identification of an efficiency and reliability criterion for the structural unit in general. The purpose of this article is to develop theoretical recommendations and scientific and methodological provisions of an organizational and technological nature in order to identify a reliability criterion for a structural unit based on manpower integration and productivity criteria. With this purpose in mind, complex scientific tasks have been defined requiring special research, development of corresponding provisions and recommendations based on the system analysis findings presented herein.

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Investigation of Cost-Influencing Factors Potentially ‎Controllable by Main Contractors in Construction Projects in ‎Iraq

Engineering and Technology Journal ◽

10.30684/etj.v38i7a.546 ◽

2020 ◽

Vol 38 (7A) ◽

pp. 1069-1076

Author(s):

Layth T. Ali ◽

Raid S. Abid Ali ◽

Zeyad S. M. Khaled

Keyword(s):

Construction Projects ◽

Project Managers ◽

Cost Overrun ◽

Public And Private ◽

Importance Index ◽

Labor Recruitment ◽

Supply Planning ◽

Major Factors ◽

And Control ◽

The Impact

Cost overrun in construction projects is a common phenomenon in Iraq. This might occur due to diversity of factors. This study aims to identify the factors influencing construction projects cost that are potentially controllable by main contractors. A field study through a questionnaire survey was directed to a sample of related Iraqi professional engineers from general contracting companies at both public and private sectors. Their opinions on the impact and frequency of each factor were investigated. The questionnaire offered (59) factors classified in (8) categories namely; legislations, financial and economic, design, contractual, site management, material, labor and equipment. The factors were ranked according to the highest Relative Importance Index (RII). The study revealed (10) major factors that are potentially controllable by main contractors namely; labor productivity, sub-contractors and suppliers performance, equipment productivity, site organization and distribution of equipment, experience and training of project managers, scheduling and control techniques, planning for materials supply, planning for equipment supply, materials delivery and planning for skilled labor recruitment. Recommendations to aid contractors and owners in early identification of these factors are also included in this study.

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The Impact of Terrorism on Construction Industry in Iraq

Wasit Journal of Engineering Sciences ◽

10.31185/ejuow.vol3.iss2.40 ◽

2015 ◽

Vol 3 (2) ◽

pp. 69-84

Author(s):

Wadhah Amer Hatem ◽

Samiaah M. Hassen Al-Tmeemy

Keyword(s):

Construction Industry ◽

Construction Projects ◽

Historical Data ◽

Terrorist Attacks ◽

Construction Sector ◽

Statistical Procedures ◽

Qualitative Approaches ◽

Suicide Attacks ◽

The Face ◽

The Impact

Suicide attacks, bombings, explosions became the part of daily life in Iraq. Consequently, the threat of terrorism put the Iraqi construction sector in the face of unique and unusual challenges that not seen on other countries. These challenges can have extensive impact on construction projects. This paper seeks to examine the impact of the terrorist attacks on construction industry and determine the extent to which the impact of terrorism on construction projects in terms of cost, schedule, and quality. This study adapted quantitative and qualitative approaches to collect data using questionnaire survey and interviews, as well as historical data. The study focused on projects that have been the target of terrorist strikes in Diyala governorate. A variety of statistical procedures were employed in data analysis. The results revealed the extent to which terrorist attacks impact construction projects in terms of cost, time, and quality. The results of this study will enhance the awareness of all construction parties to the impact of the terrorist attacks against construction projects. Eventually, this can develop a risk management assessment and assist contractors to properly protect projects and buildings to minimize injuries and fatalities in the event of terrorism.

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Assessing Architecture-and-Landscape Integration as a Basis for Evaluating the Impact of Construction Projects on the Cultural Landscape of Tourist Seaside Resorts

Land ◽

10.3390/land10010017 ◽

2020 ◽

Vol 10 (1) ◽

pp. 17

Author(s):

Wojciech Bal ◽

Magdalena Czalczynska-Podolska

Keyword(s):

Construction Projects ◽

Cultural Landscape ◽

Negative Impact ◽

Residential Buildings ◽

Evaluation Criteria ◽

Development Project ◽

Clear Trend ◽

Original Culture ◽

Construction Plans ◽

The Impact

The coastline of Western Pomerania has natural and cultural assets that have promoted the development of tourism, but also require additional measures to ensure the traditional features and characteristics are protected. This is to ensure that new developments conform to a more uniform set of spatial structures which are in line with the original culture. Today, seaside resorts are characterized by a rapid increase in development with a clear trend towards non-physiognomic architectural forms which continually expand and encroach on land closer to the coastline. This results in a blurring of the original concepts that characterized the founding seaside resort. This study evaluates 11 development projects (including a range of hotels, luxury residential buildings and hotel suites) built in 2009–2020 in the coastal area of Western Pomerania. An assessment of architecture-and-landscape integration for each development project was made, using four groups of evaluation criteria: aesthetic, socio-cultural, functional and locational factors. The study methodology included a historical and interpretative study (iconology, iconography, historiography) and an examination of architecture-and-landscape integration using a pre-prepared evaluation form. Each criterion was first assessed using both field surveys and desk research (including the analysis of construction plans and developer materials), and then compared with the original, traditional qualities of the town. This study demonstrates that it is possible to clearly identify the potential negative impact of tourism development on the cultural landscape of seaside resorts, and provides recommendations for future shaping, management and conservation of the landscape.

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A Simulation Model of Construction Projects Executed in Random Conditions with the Overlapping Construction Works

Sustainability ◽

10.3390/su13115795 ◽

2021 ◽

Vol 13 (11) ◽

pp. 5795

Author(s):

Sławomir Biruk ◽

Łukasz Rzepecki

Keyword(s):

Simulation Model ◽

Technological Process ◽

Construction Projects ◽

Working Time ◽

Simulation Studies ◽

Construction Methods ◽

The Impact ◽

Construction Works

Reducing the duration of construction works requires additional organizational measures, such as selecting construction methods that assure a shorter realization time, engaging additional resources, working overtime, or allowing construction works to be performed simultaneously in the same working units. The simultaneous work of crews may affect the quality of works and the efficiency of construction processes. This article presents a simulation model aimed at assessing the impact of the overlap period on the extension of the working time of the crews and the reduction of a repetitive project’s duration in random conditions. The purpose of simulation studies is to provide construction managers with guidelines when deciding on the dates of starting the sequential technological process lines realized by specialized working crews, for sustainable scheduling and organization of construction projects.

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Risk analysis and strategic planning on bridge construction works at the toll road procurement projects in Central Java Province

SHS Web of Conferences ◽

10.1051/shsconf/20184902020 ◽

2018 ◽

Vol 49 ◽

pp. 02020

Author(s):

Hery Suliantoro ◽

Nurul Fitriani ◽

Bagus Hario Setiadji

Keyword(s):

Avoidance Response ◽

Construction Projects ◽

Construction Project ◽

Weather Forecast ◽

Development Project ◽

Response Strategy ◽

Bridge Construction ◽

Risk Response ◽

Toll Road ◽

The Impact

Risk is a condition caused by uncertainty. Risks will occur on any construction project, including bridge construction projects. Efforts that can be taken to minimize the impact of these risks are to engage in risk management activities. This research was conducted on bridge construction work on toll road procurement project in Pejagan-Pemalang, Pemalang-Batang and Salatiga-Kertasura. The purpose of this research is to analyze the risk of bridge development project in toll road project using Risk Breakdown Structure (RBS) method and then the result as database in discussing risk response strategy. The bridge construction project has 36 risks that are divided into six groups: materials and equipment, design, human resources, finance, management, nature and environmental conditions. Bad weather risks are the higest risk and seasonal risk causing temporary work stoppages. This risk-response strategy is avoidance. Short-term avoidance response strategy is to add shift workers, install tents and add additives in the acceleration of the process of maturation of concrete. The long-term avoidance response strategy is to evaluate and rearrange the work schedule by considering the weather forecast report.

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Quantitative analysis of the impact of craft worker availability on construction project safety performance

Construction Innovation ◽

10.1108/ci-10-2015-0050 ◽

2016 ◽

Vol 16 (3) ◽

pp. 307-322 ◽

Cited By ~ 20

Author(s):

Hossein Karimi ◽

Timothy R.B. Taylor ◽

Paul M. Goodrum ◽

Cidambi Srinivasan

Keyword(s):

Regression Analysis ◽

Poisson Regression ◽

Construction Projects ◽

Construction Project ◽

Safety Performance ◽

Content Type ◽

Poisson Regression Analysis ◽

Incident Cases ◽

The Impact ◽

Craft Worker

Purpose This paper aims to quantify the impact of craft worker shortage on construction project safety performance. Design/methodology/approach A database of 50 North American construction projects completed between 2001 and 2014 was compiled by taking information from a research project survey and the Construction Industry Institute Benchmarking and Metrics Database. The t-test and Mann-Whitney test were used to determine whether there was a significant difference in construction project safety performance on projects with craft worker recruiting difficulty. Poisson regression analysis was then used to examine the relationship between craft worker recruiting difficulty and Occupational Safety and Health Administration Total Number of Recordable Incident Cases per 200,000 Actual Direct Work Hours (TRIR) on construction projects. Findings The result showed that the TRIR distribution of a group of projects that reported craft worker recruiting difficulty tended to be higher than the TRIR distribution of a group of projects with no craft worker recruiting difficulty (p-value = 0.004). Moreover, the average TRIR of the projects that reported craft worker recruiting difficulty was more than two times the average TRIR of projects that experienced no craft recruiting difficulty (p-value = 0.035). Furthermore, the Poisson regression analysis demonstrated that there was a positive exponential relationship between craft worker recruiting difficulty and TRIR in construction projects (p-value = 0.004). Research limitations/implications The projects used to construct the database are heavily weighted towards industrial construction. Practical implications There have been significant long-term gains in construction safety within the USA. However, if recent craft shortages continue, the quantitative analyses presented herein indicate a strong possibility that more safety incidents will occur unless the shortages are reversed. Innovative construction means and methods should be developed and adopted to work in a safe manner with a less qualified workforce. Originality/value The Poisson regression model is the first model that quantifiably links project craft worker availability to construction project safety performance.

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FAKTOR PENANGULANGAN TERJADINYA WASTE PADA PROYEK KONSTRUKSI DI SURABAYA

EXTRAPOLASI ◽

10.30996/exp.v17i2.4427 ◽

2020 ◽

Vol 17 (2) ◽

pp. 1-10

Author(s):

Michella Beatrix ◽

Nurul Rochmah ◽

Gede Sarya ◽

Pebru Dwijayanto

Keyword(s):

Waste Management ◽

Construction Projects ◽

Positive Impact ◽

Scale Construction ◽

Small Scale ◽

Construction Costs ◽

Warehouse Storage ◽

The Right ◽

The Impact ◽

Material Requirements

AbstractLarge and small scale construction projects have waste that cannot be predicted in advance, even the amount cannot be predicted directly, whether it is in large or small amounts. The existence of waste can have a significant impact that can affect construction costs. Waste can have both negative and positive impacts. Good waste management will have a positive impact on the company in terms of cost, even time, and quality, but if the waste that occurs cannot be handled or managed properly it will harm the company in terms of cost, time, and even in terms of quality. In this case, the party that always gets the impact of the waste is the contractor.This study focuses on mitigating the occurrence of waste that is how to minimize it. Thisstudy uses the distribution of questionnaires to the contractor in Surabaya. The results of this study are 5 item indicators on how to minimize the highest ranking. The 5 items are Updating material requirements, Mixing, transporting, and placing concrete at the right time, Increasing the competence and expertise of labor, Provision of good and adequate material/warehouse storage facilities, and accurate material measurement. Abstrak Proyek konstruksi dalam skala besar maupun kecil, memiliki waste yang tidak dapat diprediksi sebelumnya, bahkan jumlahnya pun tidak dapat diprediksi secara langsung, apakah itu dalam jumlah besar ataupun jumlah yang kecil. Adanya waste dapat memberikan dampak yang signifikan yang dapat mempengaruhi biaya konstruksi. Pada dasarnya waste dapat memberikan dampak negatif maupun positif. Pengelolaan waste yang baik akan memberikan dampak positif bagi perusahaan dalam segi biaya, bahkan waktu dan mutu, namun apabila waste yang terjadi tidak dapat diatasi atau dikelola dengan baik maka akan memberikan dampak negatif bagi perusahaan dalam segi biaya, waktu bahkan dalam hal mutu. Dalam hal ini pihak yang selalu mendapatkan dampak dari adanya waste adalah pihak kontraktorPenelitian ini memfokuskan pada faktor penanggulangan terjadinya waste yaitu cara meminimalisirnya. Penelitian ini menggunakan penyebaran kuisioner kepada pihak kontraktor di Surabaya. Hasil dari penelitian ini adalah 5 item indicator cara meminimalisir yang memiliki ranking tertinggi. 5 item tersebut adalah Updating kebutuhan material, Mencampur, mengangkut dan menempatkan beton pada waktu yang tepat, Meningkatkan kompetensi dan keahlian tenaga kerja, Penyediaan fasilitas penyimpanan material/gudang yang baik dan memadai, dan Pengukuran bahan yang akurat.

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Identification and Assessment of Uncertainty Factors that Influence the Transaction Cost in Public Sector Construction Projects in Pakistan

Buildings ◽

10.3390/buildings8110157 ◽

2018 ◽

Vol 8 (11) ◽

pp. 157 ◽

Cited By ~ 1

Author(s):

Zaigham Ali ◽

Fangwei Zhu ◽

Shahid Hussain

Keyword(s):

Transaction Cost ◽

Construction Projects ◽

Critical Role ◽

Environmental Groups ◽

Uncertainty Factors ◽

Competitive Tendering ◽

Importance Index ◽

Force Majeure ◽

Internal Sources ◽

The Impact

Like other kinds of projects, construction projects are exposed to uncertainty, which plays a critical role in determining the transaction cost (TC). This study explores the uncertainty factors that are associated with construction projects that substantially influence the TC. To obtain the opinions of construction professionals, a survey questionnaire was developed after identifying 30 relevant causes of uncertainty from the literature. A survey of 216 professionals was conducted in Pakistan, and the relative importance index (RII) was used to prioritize the significant uncertainty factors that escalate the TC. Based on the responses from various construction professionals, this study determined that the most significant uncertainty factors that influence TC are: competitive tendering, incomplete design and specifications, late payments, conflict management, delayed possession of sites, force majeure, and work acceleration. This study also compared and analyzed the views of project managers and consultants and found that uncertainty from internal sources has a more significant influence on TC than that from external sources. The political and environmental groups do not contribute much escalating the TC. However, uncertainties that arise from the commercial, project site, and technical groups are more of an influence on TC. This research helps practitioners and professionals to adopt integrative systems in most uncertain situations proactively to find opportunities in volatile markets to reduce the impact of uncertainty on the total project cost.

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The Evolution Model of Emergency Response System for Sudden Accidents of Construction Projects

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.2253 ◽

2012 ◽

Vol 226-228 ◽

pp. 2253-2257

Author(s):

Ren Hui Liu ◽

Bo Yu

Keyword(s):

Emergency Response ◽

Construction Projects ◽

Nonlinear Differential Equations ◽

Continuous Process ◽

Construction Project ◽

Equation Model ◽

Emergency Response System ◽

Response System ◽

The Impact ◽

Emergency System

It is a nonlinear complex system for project emergency response system, that is a continuous process for the evolution of emergency construction project development process. The nonlinear differential equations that can describe the sudden emergency construction project the evolution of mathematical models. Emergency system by Logistic model was modified, taking into account the development of emergency systems will certainly be outside the system during the impact, combined with the project incidents of law principles of the role of Heinrich proposed TS-based emergency response system evolution equation Model, demonstrated the system at different stages of the emergency rules and features. For the emergency system in which the different stages of development, the corresponding measures to improve emergency response capabilities.

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