scholarly journals Delay Factors in Reconstruction Projects: A Case Study of Mataf Expansion Project

2018 ◽  
Vol 10 (12) ◽  
pp. 4772 ◽  
Author(s):  
Basem Khatib ◽  
Yap Poh ◽  
Ahmed El-Shafie
Keyword(s):  
Construction Projects ◽  
Project Managers ◽  
Time Cost ◽  
Cultural Sustainability ◽  
Five Factors ◽  
New Construction ◽  
Negative Impacts ◽  
The City ◽  
Construction Works

Delays in construction projects are a common phenomenon throughout the industry. This problem has many negative impacts on the time, cost, and sustainability of the projects. Many studies were conducted to identify the main causes of this delay in new construction projects in different regions but very few studies have focused on finding an explanation for the causes of delay in major reconstruction projects that have great religious and cultural sustainability. This paper examines the factors that contributed to work delays in one of the most major reconstruction projects that took place recently in the Middle East, which is namely the Mataf Expansion Project in the city of Mecca, Saudi Arabia. Fourteen interviews were conducted with project managers, construction managers, and senior site engineers to identify the factors that they encountered and led to the delay in the reconstruction activities of this project. Some of the findings were consistent and similar to most other causes of delay that are associated with new construction projects. However, interestingly, this research has discovered the existence of other unavoidable factors that caused a delay and should be considered for any similar reconstruction projects. The results showed that these factors could be divided into two groups: the first one is related to the demolition phase (five factors) and the second group is related to construction works (nine factors). In addition, it has been observed that the building material during the reconstruction is considered one of the major delaying factors. Finally, these 14 delay factors should be carefully considered to assure the sustainability of the main object’s function during the reconstruction activities.

scholarly journals SIMULATION OF BRIDGE CONSTRUCTION WORKS: AN EXPLORATORY STUDY

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Fahimeh Zaeri ◽  
James Olabode Bamidele Rotimi
Keyword(s):  
Exploratory Study ◽  
Construction Projects ◽  
Resource Constraints ◽  
Discrete Elements ◽  
Bridge Construction ◽  
Complex Interactions ◽  
Simulation Based ◽  
Construction Operation ◽  
Construction Works

Bridge construction projects are associated with uncertainties partly due to sequencing issues, logistics, interactions, and resource constraints. Their construction is mostly cyclic and repetitive, yet complex, requiring innovative approaches to cope with its management. Construction projects planners seek methods to enable them to schedule bridge construction projects in consideration of these constraining factors. The main objective of this research is to develop a concept of a simulation-based modeling approach. It aimed to decide which data in real systems are important for the modeling of an operation, and in which way they must be gathered to help planners approach a proper simulation-based schedule. A case study project based in New Zealand was selected for this paper. It focuses on developing a resource-based model of bridge construction using a launching-girder construction method, taking into account the complex interactions among the project’s components. The discrete elements within the project and steps taken to develop a model are described in this paper. The study enhances knowledge on the applicability of simulation in repetitive construction operation, which in turn can provide more realistic models for scheduling progress.

scholarly journals Application of Urban Geology in Construction Projects (Case Study: Urban Geology of Sarpol-e Zahab, Kermanshah Province, Iran)

2021 ◽  
Vol 53 (1) ◽  
Author(s):  
Sajad Afzali ◽  
Faezeh Taheri Sarmad ◽  
Mojtaba Heidari ◽  
Seyed Hossein Jalali
Keyword(s):  
Urban Space ◽  
Construction Projects ◽  
Urban Geology ◽  
Natural Phenomena ◽  
Horizontal Acceleration ◽  
Preliminary Study ◽  
The Impact ◽  
The City ◽  
Financial Losses

Urban geology is a preliminary study for the construction and development of cities, which has been more prominent in recent decades in some countries despite its long application history. It assesses the impact of geological and natural phenomena on urban space and available structures. The earthquake on Nov. 21, 2017, inflicted a lot of damage to the city of Sarpol-e Zahab, west of Iran, including financial losses and casualties. Reconstruction of this city and planning for its sustainable development entail conducting urban geological studies. In the present study, the effect of natural phenomena on Sarpol-e Zahab County was studied by investigating its geology and geomorphology. The results showed that, in addition to the earthquake that habitually affected the city of Sarpol-e Zahab, the hazards of other phenomena are also significant. Recorded horizontal acceleration in the recent earthquake confirmed the high seismicity of Sarpol-e Zahab has.

Enhancing the Effect on Project Success through Information Presentation

2015 ◽  
Vol 764-765 ◽  
pp. 895-899
Author(s):  
Shiow Luan Wang ◽  
Thi Hoa Vu
Keyword(s):  
Project Management ◽  
Construction Projects ◽  
Project Success ◽  
Project Managers ◽  
Management Process ◽  
Time Cost ◽  
Information Presentation ◽  
Web Based ◽  
Project Participants ◽  
Project Data

Construction projects are becoming ever more complex and time driven, especially as the amount of project data and active project participants’ increase. For achieving a project success, project management not only must to meet time, cost, quality objectives, but also satisfies the project stakeholders needs related to the project management process. Project managers were difficult to effectively seizing, collecting and handling information which are generated from different systems. The elements of information presentation in web-based was contributed an important role to project management success. The purpose of this study is to provide a background to denote the enhancing project management via information presentation based on effective information technology/information systems which are emphasized in web-based.

Optimizing time–cost in generalized construction projects using multiple-objective social group optimization and multi-criteria decision-making methods

2020 ◽  
Vol 27 (9) ◽  
pp. 2287-2313 ◽  
Author(s):  
Duc Hoc Tran
Keyword(s):  
Decision Making ◽  
Construction Projects ◽  
Project Managers ◽  
Multiple Objective ◽  
Cost Curve ◽  
Multi Criteria Decision Making ◽  
Construction Process ◽  
Time Cost ◽  
Content Type ◽  
Social Group Optimization

PurposeProject managers work to ensure successful project completion within the shortest period and at the lowest cost. One of the main tasks of a project manager in the planning phase is to generate the project time–cost curve, and furthermore, to determine the most appropriate schedule for the construction process. Numerous existing time–cost tradeoff analysis models have focused on solving a simple project representation without regarding for typical activity and project characteristics. This study aims to present a novel approach called “multiple-objective social group optimization” (MOSGO) for optimizing time–cost decisions in generalized construction projects.Design/methodology/approachIn this paper, a novel MOGSO to mimic the time–cost tradeoff problem in generalized construction projects is proposed. The MOSGO has slightly modified the mechanism operation from the original algorithm to be a free-parameter algorithm and to enhance the exploring and exploiting balance in an optimization algorithm. The evidential reasoning technique is used to rank the global optimal obtained non-dominated solutions to help decision makers reach a single compromise solution.FindingsTwo case studies of real construction projects were investigated and the performance of MOSGO was compared to those of widely considered multiple-objective evolutionary algorithms. The comparison results indicated that the MOSGO approach is a powerful, efficient and effective tool in finding the time–cost curve. In addition, the multi-criteria decision-making approaches were applied to identify the best schedule for project implementation.Research limitations/implicationsAccordingly, the first major practical contribution of the present research is that it provides a tool for handling real-world construction projects by considering all types of construction project. The second important implication of this study derives from research finding on the hybridization multiple-objective and multi-criteria techniques to help project managers in facilitating the time–cost tradeoff (TCT) problems easily. The third implication stems from the wide-range application of the proposed model TCT.Practical implicationsThe model can be used in early stages of the construction process to help project managers in selecting an appropriate plan for whole project lifecycle.Social implicationsThe proposal model can be applied to multi-objective contexts in diversified fields. Moreover, the model is also a useful reference for future research.Originality/valueThis paper makes contributions to extant literature by: introducing a method for making TCT models applicable to actual projects by considering general activity precedence relations; developing a novel MOSGO algorithm to solving TCT problems in multi-objective context by a single simulation; and facilitating the TCT problems to project managers by using multi-criteria decision-making approaches.

History of the Torre Latinoamericana

2018 ◽  
Author(s):  
Sarah Beckhart
Keyword(s):  
Mexico City ◽  
Construction Projects ◽  
Historic District ◽  
Care Needs ◽  
Building Projects ◽  
Education And Health ◽  
History Of ◽  
New Construction ◽  
Historic City ◽  
The City

Historians have extensively explored the topic of architecture in Mexico City in the 20th century. From the relationships between politics, public patrons, new construction technologies, and new idioms of modernism, the impressive story of architecture in this megalopolis continues to astound and captivate people’s imaginations. Architecture was a channel that politicians used to address housing, education, and health care needs in a rapidly growing city. Yet scholars have not been especially concerned with private construction projects and their influence on the process of shaping and being shaped by the visual representation of Mexico City. Private building projects reveal an alternative reality of the city—one not envisioned by politicians and public institutions. Private construction projects in the historic city center are particularly interesting due to their location. These buildings are built on ancient clay lakebeds and volcanic soil on which the Aztecs first built the city. Not only are these buildings located in the heart of the city, the buildings in the rest of the historic district are also sinking. Any building in a historic district that has withstood the test of time should be an object of interest to scholars. The Torre Latinoamericana is perhaps the only building in the historic district and the entire city that ceases to sink, and instead floats! Located on the corner of Madero and San Juan de Letrán, the building sits at the heart of history, culture, and ancient Aztec clay lakebeds. The Torre Latinoamericana was built between 1948 and 1956 and is one of the most important visual symbols of resilience and modernity in Mexico City today.

scholarly journals Study on Time and Resource Management in Construction Projects Using MS Project

2018 ◽  
Vol 7 (3.10) ◽  
pp. 23
Author(s):  
T Subramani ◽  
T M.Karthick
Keyword(s):  
Construction Projects ◽  
Fixed Time ◽  
Project Managers ◽  
Time Cost ◽  
Performance Goal ◽  
Resource Leveling ◽  
Project Study ◽  
Time Table ◽  
Task Time ◽  
Cost Implications

This construction project study about excessive stake endeavor aiming at time certain programmed performance goal. Except combine resources are deliberate and procured, no activity may be completed in line with a pre fixed time table. Project managers ought to take complicated choices under exceptional scheduling desires and below situations of uncertainty that every so often expand past assignment intervals. Our project study  offers with useful resource scheduling for a quick track project with constrained intervals. The learning has been executed in stages. Inside the first segment, with the useful resource of MS PROJECT software task time table for numerous activities for the development of a business constructing become prepared. Finally, requirements of sources had been attributed to the activities primarily depend on Standard Schedule Rates. The considered necessary necessity information collected from the designated drawings and triumphing site online situations. The analysis was completed with the aid of useful resource leveling for diverse activities by way of reducing resources with accelerated length to observe the time-cost implications.

Overall multiobjective optimization of construction projects scheduling using particle swarm

2016 ◽  
Vol 23 (3) ◽  
pp. 265-282 ◽  
Author(s):  
Emad Elbeltagi ◽  
Mohammed Ammar ◽  
Haytham Sanad ◽  
Moustafa Kassab
Keyword(s):  
Cash Flow ◽  
Construction Projects ◽  
Real Life ◽  
Particle Swarm ◽  
Project Managers ◽  
Time Cost ◽  
Swarm Optimization ◽  
Content Type ◽  
Proposed Model ◽  
Optimized Schedule

Purpose – Developing an optimized project schedule that considers all decision criteria represents a challenge for project managers. The purpose of this paper is to provide a multi-objectives overall optimization model for project scheduling considering time, cost, resources, and cash flow. This development aims to overcome the limitations of optimizing each objective at once resulting of non-overall optimized schedule. Design/methodology/approach – In this paper, a multi-objectives overall optimization model for project scheduling is developed using particle swarm optimization with a new evolutionary strategy based on the compromise solution of the Pareto-front. This model optimizes the most important decisions that affect a given project including: time, cost, resources, and cash flow. The study assumes each activity has different execution methods accompanied by different time, cost, cost distribution pattern, and multiple resource utilization schemes. Findings – Applying the developed model to schedule a real-life case study project proves that the proposed model is valid in modeling real-life construction projects and gives important results for schedulers and project managers. The proposed model is expected to help construction managers and decision makers in successfully completing the project on time and reduced budget by utilizing the available information and resources. Originality/value – The paper presented a novel model that has four main characteristics: it produces an optimized schedule considering time, cost, resources, and cash flow simultaneously; it incorporates a powerful particle swarm optimization technique to search for the optimum schedule; it applies multi-objectives optimization rather than single-objective and it uses a unique Pareto-compromise solution to drive the fitness calculations of the evolutionary process.

scholarly journals The Influence of Risk Management on Construction Project Performance: A Case Study.

2018 ◽  
pp. 936-942
Author(s):  
Mazurina Mohd Ali ◽  
Sakinah Zahra Norman ◽  
Erlane K. Ghani ◽  
Noor Hasniza Haron
Keyword(s):  
Risk Management ◽  
Construction Projects ◽  
Management Practices ◽  
Management Practice ◽  
Methodological Approach ◽  
Construction Project ◽  
Project Performance ◽  
Time Cost ◽  
Schedule Delay

Risk Management is recognized as an important exercise that creates value to a project and improves project performance. Time, cost and quality are the primary measures of a project performance in this industry. The success or failure in any construction project can be monitored through the attainment of these primary measures. Notably, Malaysian construction industry is considered as one of the important industries that positively contribute to the increase of Gross Domestic Product and subsequently the growth of the country’s economic development. Unfortunately, this industry suffers poor performance in which it leads to failure in accomplishing effective time, cost and quality performance. Most construction projects face a schedule delay, cost overrun and are poor in product quality. Thus, the aim of this study is to determine the influence of risk management on construction project performance of Malaysian companies based on these three primary measures. The degree of diffusion of risk management practice in the chosen construction project in Malaysia is also examined. The methodological approach exploited in this study is a case study approach involving analysis of documented data and face-to-face interviews with key players that hold different roles and responsibilities. They include a director, project managers, finance managers, contract managers and quantity surveyor managers. The results demonstrate that adopting effective risk management practices positively impacts project performance thus leading to project success. Nevertheless, the lack of knowledge and poor communication of risk management practices in construction projects contribute to the weak implementation of an effective and systematic risk management practices in Malaysia.

Sign in / Sign up

Export Citation Format

Share Document