A Study on Variations in Sewerage Construction Projects

2012 ◽  
Author(s):  
Mohd Azraai Kassim ◽  
Jen Loong Lee
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Site Conditions ◽  
Project Costs ◽  
Research Findings ◽  
Project Characteristics ◽  
Major Factors ◽  
A Company ◽  
Total Project ◽  
Sewerage Network

Perubahan dalam pembinaan telah lama menjadi isu pertikaian antara pelbagai pihak yang terlibat dalam projek pembinaan. Namun, hanya sejumlah kecil kajian yang rasmi telah dijalankan untuk menganalisis sebab-sebab dan kesan-kesannya. Kajian ini tertumpu kepada analisis kekerapan dan keterukan berbagai-bagai faktor yang mengakibatkan perubahan dalam projek pembinaan rangkaian pembetungan. Adalah penting bagi sesebuah syrikat bukan sahaja mengetahui kos perubahan, tetapi juga mengenal pasti perkara-perkara yang perlu diberi perhatian untuk mengurangkan kos-kos sedemikian dalam projek akan datang. Kesemua data dan maklumat yang diperlukan diperolehi dari fail-fail arkib bagi tiga belas projek yang disahkan melalui temubual. Data-data dikategori untuk menganalisis kekerapan dan keterukan faktor-faktor. Jadual dan carta digunakan untuk menunjukkan hasil-hasil kajian. Daripada hasil analisis, keadaan tapak yang berbeza merupakan faktor utama yang mengakibatkan perubahan. Faktor-faktor ini menyumbangkan 49.3% daripada jumlah bilangan perubahan, 56.2% daripada jumlah kos perubahan dan 3.8% daripada jumlah kos projek. Dua ciri projek, iaitu nilai anugerah kontrak dan gred pendaftaran kontraktor dengan Lembaga Pembangunan Industri Pembinaan (mewakili pengkhususan, kedudukan kewangan dan sumber-sumber lain kontraktor) menunjukkan penyebab yang tertentu dengan perubahan. Kata kunci: perubahan; kekerapan; keterukan; pembetungan; rangkaian; pengkhususan Variations in construction have long been a debatable issue among the different participants involved in construction projects. However, only a few formal studies have been carried out to analyse its couses and effects. This study is focused on the frequency and severity of various factors causing variations in sewerage networks construction projects. It is important for a company not only to know the variation costs, but also to identify the most likely areas on which to focus in order to reduce these costs for the future projects. All the necessary data and information are obtained from archival files of thirteen projects and verified through interviews. These data are categorised to analyse the frequency and severity of factors. Tables and charts are presented to show the research findings. From the analysis, differing site conditions appear to be the major factors contributing to variations. They average 49.3% of the total number of variations, 56.2% of the total variation costs and 3.8% of the total project costs. Two project characteristics i.e. contract award value and the contractor´s registration grade with the Construction Industry Development Board (which represents the contractor´s specialisation, financial and other resources standing) show certain causal relationships with variations. Key words: variation; frequency; severity; sewerage; network; specialisation

Overhead Cost Assessment of Construction Projects in Erbil Governorate

2021 ◽  
Author(s):  
Noori Ali ◽  
◽  
Salar Ahmed ◽  
Keyword(s):  
Construction Industry ◽  
Research Method ◽  
Construction Projects ◽  
Cost Assessment ◽  
Business Activity ◽  
Overhead Cost ◽  
Lump Sum ◽  
Activity Product ◽  
Project Costs ◽  
Total Project

Overhead or indirect cost considers as an element of the total project costs. The economic strength of any country depends on the activity of their construction industry. Overhead is an idiom refers to the costs required to operate a business, but it could not be directly attributed to any specific business activity, product, or service. And so on, overhead costs do not generate profits directly. Overhead is remainedimportant since it provides major support for the generation of profit-making value. The objective of this study is to explore common methods of measuring the overhead cost of the project in perspective of the contractors, as well as to show important types of overhead costs entire measuring cost. The research method has been conducted is a questionnaire concerning overhead cost in construction projects in Erbil Governorate. The questionnaire consists of two sections include, specify the method used by technical sector or company to measure overhead cost for the project, with choices, (i. Measuring in details ii. Measuring as a percentage, iii. Measuring as a lump sum, iv. Vary from one project to another, v. Other Method), and specify the overhead cost important, with indicating the choices of assessment. Thus; the total of 70 requests has been distributed to the respondents, 54 questioners responded. Excel program used to analyze information obtained through conducting statistical operations. Results showed that most frequent method used was measuring in details, with a percentage (42.6%). And the study shows that the most important overhead cost is material test costs which scored (RII=0.76), because of its great effect on the construction project processes generally and on overhead cost especially.

Implementation of project change management best practice in different project environments

2009 ◽  
Vol 36 (3) ◽  
pp. 439-449 ◽  
Author(s):  
Yi Zou ◽  
Sang-Hoon Lee
Keyword(s):  
Change Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Best Practice ◽  
Change Orders ◽  
Project Outcomes ◽  
Construction Industry Institute ◽  
Project Characteristics ◽  
Project Data ◽  
The Relationship

Change orders are ubiquitous in construction projects, and effective and efficient control of changes is critical to project success. There have been many empirical suggestions as to how to manage changes for best project outcomes, but this research is specifically aimed at exploring the relationship between project characteristics and the implementation of project change management best practices (PCMBP). Construction project data for this research are derived from the Construction Industry Institute (CII) benchmarking and metrics (BM&M) database. Binary logistic regressions and factorial analysis of variance (ANOVA) are performed to find out the differences among diverse types of projects in terms of the extents to which the PCMBP elements have been implemented. The findings can assist construction industry practitioners with using PCMBP more purposefully in accordance with specific project characteristics so that they will be better able to develop and administer their project execution plans.

scholarly journals Building Information Modelling Technology in Mitigating Cost Overruns and change orders in Construction Projects

2021 ◽  
Vol 4 (1) ◽  
pp. 50-64
Author(s):  
Ja’far A. Aldiabat Al-Btoosh
Keyword(s):  
Construction Industry ◽  
Cost Estimation ◽  
Construction Projects ◽  
Information Modeling ◽  
Cost Overruns ◽  
Change Orders ◽  
Significant Difference ◽  
Project Costs ◽  
Building Information ◽  
And Control

Variation order (VO) is one of the main issues faced by the construction industry in Jordan. Many researchers had investigated on the causes of VO and proposed procedures to minimize and control this issue; however, the VO is affecting the construction industry badly even at moment. Building Information Modeling (BIM) is a powerful management system that can make a significant difference in the project costs. However, BIM has not been examined as a tool to minimize the VO in Jordan. The main target of this study is to utilize BIM applications in reducing the effect of VO on the governmental projects in Jordan. In order to achieve this target, the researcher has designed a questionnaire to gather data related to VO causes and the BIM capability to solve this problem. The data collected from the questionnaires were analyzed statistically. The result from the analysis found that the consultant initiated the highest VO of 50% followed by the clients and the contractors of 20% and 10% unforeseen variation respectively. Moreover, it is found that BIM Design Applications, Facility Operations Simulation, Exploration Design Scenarios, BIM Design Detection and BIM Quantity Take-off and Cost Estimation were significantly capable of minimizing VO. The results show positive relationship with the application of BIM in minimizing VO in the construction industry in Jordan. © 2018. JASET, International Scholars and Researchers Association

Factors leading to design changes in Jordanian construction projects

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lina Ghazi Gharaibeh ◽  
Sandra T. Matarneh ◽  
Mazen Arafeh ◽  
Ghaleb Sweis
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Control Measures ◽  
Value Engineering ◽  
Public And Private ◽  
Content Type ◽  
Factors Affecting ◽  
Construction Market ◽  
Design Changes ◽  
Major Factors

PurposeThe problem of design changes in the construction industry is common worldwide, and the Jordanian market is no exception. The purpose of this paper is to identify the factors causing design changes in construction projects in Jordan in both the public and private sectors. Furthermore, this research will examine the effect of these factors on project's performance during the construction phase.Design/methodology/approachThis research commences by identifying the factors causing design changes in construction projects worldwide through an intensive literature review. The identified factors were then filtered to those applicable to the Jordanian construction market based on the results obtained from a questionnaire survey and real case construction projects. In total, 252 professionals from the Jordanian construction industry and 10 completed and/or ongoing construction projects in different parts of Jordan were compared.FindingsThe results find that the top major factors affecting design changes are owner's requirements; design errors and omissions and value engineering. The research also studies and documents the impacts of design changes on project cost, schedule and quality.Originality/valueThe results obtained from this research will assist the construction professionals representing owners, consultants and contractors in applying control measures to minimize the occurrence of the identified factors causing design changes and to mitigate their sever impacts on projects in terms of cost, schedule and quality.

scholarly journals Identification of Causes of Conflicts and Disputes in Construction Industry

2020 ◽  
Vol 9 (3) ◽  
pp. 1065-1071
Keyword(s):  
Literature Review ◽  
Construction Industry ◽  
Construction Projects ◽  
Time Budget ◽  
Major Factors ◽  
Different Levels

In construction industry number of participants from various professions having with different levels of knowledge and talents are involved and the conflicts are unavoidable. Conflicts and disputes are the major factor that will lead the projects to be unsuccessful. Thus it is necessary to identify the causes of conflicts and disputes to complete the project on estimated time, budget and quality. The main aim of the project is to identify and analyze the main causes of conflicts and disputes in construction projects. In order to attain the aim, a literature review was conducted to identify the factors causing conflicts and disputes. The factors identified were categorized into eight and the main causes of conflicts and disputes were determined. Finally analysis were conducted to rank the major factors causing conflicts and disputes in construction industry.

scholarly journals Assessment of the impacts of building construction activities on the environment

2020 ◽  
Vol 39 (2) ◽  
pp. 325-331
Author(s):  
F.O. Akintayo ◽  
O.N. Oyebade ◽  
S.P. Songca ◽  
N.O. Adebisi ◽  
O.S. Oluwafemi ◽  
...  
Keyword(s):  
Air Pollution ◽  
Construction Industry ◽  
Construction Projects ◽  
Raw Materials ◽  
Control Measure ◽  
Building Construction ◽  
Construction Sites ◽  
Dust Emissions ◽  
Air Contamination ◽  
Major Factors

Activities in building construction industry contribute to air pollution. In this study, gas data from four locations at each three building construction sites in Doha, Qatar were collected and analyzed. Questionnaires were also administered to companies that are involved in building construction projects. The results showed traces of SO2, CO2, CO and NO2 but in amounts below the detrimental limit stipulated by the Ministry of Environment, Qatar. Questionnaire responses revealed that the extraction of raw materials and the energy consumed during construction occur quite often, but strongly implicated dust generated from construction sites and waste disposal, as major factors causing air pollution in the area. It is therefore, recommended that regular monitoring of air should be carried out within building construction sites to aid detection of air contamination. This will serve as a control measure to stimulate catalytic conversion of exhaust, reuse and recycling of waste materials. Keywords: Air pollution, Building construction activities, Dust, Emissions and Environment.

scholarly journals PERCEPATAN WAKTU PELAKSANAAN PEKERJAAN KONSTRUKSI DENGAN METODE CPM DAN TCTO

2019 ◽  
Vol 11 (1) ◽  
pp. 33-40
Author(s):  
Cut Zukhrina Oktaviani ◽  
Ibnu Abbas Majid ◽  
Risdiawati Risdiawati
Keyword(s):  
Completion Time ◽  
Construction Projects ◽  
Critical Path ◽  
Minimum Cost ◽  
Time Cost ◽  
Trade Off ◽  
Project Duration ◽  
Project Completion ◽  
Project Costs ◽  
Total Project

Construction delays are a common and major concern in most construction projects. Construction project delay can indirectly affect of project performance. Delay resolve method is to schedule crashing with various methods. This crashing planning is done by combining the Critical Path Method (CPM) and Time-Cost Trade-Off (TCTO) method for the minimum cost in crash duration calculation. Project A data is used to be a case studi in crash duration calculation and costs increase. Rescheduling with CPM result project completion time 120 days and after crashing project duration becomes 94 days, there was a reduction 26 days project completion time. Crashing programme are do to 18 activities from 30 critical activies rescheduling with CPM result. Total project costs changes is Rp. 19.923.466,- due working time addition (overtime) to reduce project time with Time Cost Trade Off method. Normal condition project costs is Rp. 985,171,182.52 and after duration crash becomes Rp. 1,005,094,648, -.

scholarly journals Causes of delays in the construction phase of Chinese building projects

2018 ◽  
Vol 25 (11) ◽  
pp. 1534-1551 ◽  
Author(s):  
Ting-Kwei Wang ◽  
David N. Ford ◽  
Heap-Yih Chong ◽  
Wei Zhang
Keyword(s):  
Construction Industry ◽  
Questionnaire Survey ◽  
Construction Projects ◽  
Poor Performance ◽  
Building Construction ◽  
Building Projects ◽  
Content Type ◽  
Research Findings ◽  
Causes Of Delays ◽  
Survey Approach

PurposeDelays during construction are one of the common scenarios in the construction industry. The purpose of this paper is to identify the primary causes of delays in the construction phase of building construction projects in China.Design/methodology/approachQuestionnaire survey approach was adopted across the four typical cities in China, namely, Beijing, Shanghai, Chongqing and Shenzhen. In total, 115 sets of valid responded questionnaires were collected and analyzed.FindingsThe results show that the causes of variations, delays in progress payments, exceptionally low bids and subcontractors’ poor performance and communication issues were the most important causes of delays in China.Originality/valueThis research is the first questionnaire survey on the causes of delays in the construction phase of building construction projects in China. The comparative analysis shows two unique causes of delays in the Chinese construction industry, such as “difficulty in claiming indemnity” and “unreasonable upfront capital demanded by client.” It also reveals different ranked causes of delays as per distinguished political and economic situations in China. The research findings can be referred by construction projects in other countries that are funded or partnered with China.

scholarly journals Cost overrun in construction projects in Oman: Case study

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Haitham Nasser Al Siyabi ◽  
Omar Khaleel
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Poor Quality ◽  
Building Construction ◽  
Cost Overrun ◽  
Survey Interviews ◽  
Original Contract ◽  
Major Factors ◽  
The Cost ◽  
The Impact

There are many challenges in construction industry sector, and one of the most important and critical is completion of the project within the original contract value. As the issue of cost overrun in construction projects is spread worldwide generally and commonly encountered in the Sultanate of Oman.The main objectives of this study are to identify and determine vital factors leading to cost overrun in Building Projects in Oman, evaluate the impact of cost overrun in building construction projects and develop the best protocol strategy for project management teams that can be adopted in order to control the cost overrun in future projects. These objectives have been obtained through several methods, questionnaire survey,interviews with experts in construction industry. Twenty nine major factors lead to cost overrun were identified through literature review and studied in Sultanate of Oman.The study concluded that there are three major impacts of cost overrun in construction projects and industry which are time of completion, delivery of poor quality projects and delay of payment approval. Additional to that, Hire good Supervision Team, a good Cost Controller, Project Manager, a good project design team, well planning for pre-contract stage and proper procurement strategy. Consider the Risk assessment and Risk Control are crucial to minimize the cost overrun in building construction project in Oman. The study have recommended procedure to cost control in future project such as the Employer should have a proper tender analysis of the Contractor’s bid, Detailed design should be finalized before award of work and others.

scholarly journals A Comprehensive Review on Cost Optimization by Resource Allocation Using Primavera

2018 ◽  
Vol 4 (9) ◽  
pp. 1-4
Author(s):  
Prof. M. C. Paliwal ◽  
Divya Chouriya
Keyword(s):  
Resource Allocation ◽  
Resource Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Cost Optimization ◽  
Vital Role ◽  
Planning And Scheduling ◽  
Important Place ◽  
Comprehensive Review ◽  
Total Project

Resources play vital role in construction projects. The performance of construction industry depends chiefly on how best the resources are managed. Optimization play pivotal role in resource management, but task is highly haphazard and chaotic under the influence of complexities and vastness. Management always looks for optimum utility of resources available with them. Hence, the project management has got important place especially in resource allocation and smooth functioning with allocated budget. To achieve these goals and to exercise enhance optimization certain tools are used for resource allocation optimally. Implementation of construction project needs a proper planning and scheduling is of vital importance for the project to be executed and run smoothly. A best schedule has to be prepared in such a way that meets the primary objectives of the total project. Those essential destinations are to make a quality venture, finished on time, inside spending plan, and in a sheltered workplace.

Sign in / Sign up

Export Citation Format

Share Document