Constructability is a concept with relative and not absolute
value to increase optimization capacity of resources such as
workforce, time, cost, quality, and working environment
conditions. Given the growing complexity of projects and the
increased number of failed and abandoned projects, the
necessity to implement constructability in projects has become
more tangible. Although the effects of lack of quantitative
definition of constructability role in the traditional
construction approaches are evident and have led to lack of
coordination in performance of construction projects, so far no
comprehensive quantitative approach has been considered to
analyze the obstacles to constructability implementation. This
study aims to identify and categorize the obstacles to
facilitating the presence of contractors in the early stages of
planning and design to implement constructability. In this
study a comprehensive list of obstacles to constructability
implementation is developed as a questionnaire. This
questionnaire was presented to the experts, active in the field
of construction. Finally, its results were analyzed using
exploratory factor analysis method. Totally, 63 obstacles were
questioned, then they were categorized by some of the experts
of this industry into five categories of macro factors,
including contractual, environmental, managerial, technical,
and organizational. The significance of this study is due to
this fact that identifying and categorizing the key obstacles
to constructability implementation provides a useful reference
for managers and owners of the construction industry to
identify and develop solutions to resolve them. Identifying the
obstacles to the presence of contractors in the planning and
design stage and having a quantitative view toward this issue
affects project implementability. In this regard, one can
present more effective solutions to facilitate the presence of
contractors in the early stages of design and also improves the
effectiveness of constructability.

/pdf/constructability-obstacles-an-exploratory-factor-analysis-3w0rmtiyoa.pdf

Constructability obstacles: an exploratory factor analysis approach

A construction project has many phases, all of which involve various risks. The first step in risk management is risk identification. The literature lacks to address identifying key risk factors af...

Identifying principal risk factors in Turkish construction sector according to their probability of occurrences: a relative importance index (RII) and exploratory factor analysis (EFA) approach

Abstract The construction industry is changing constantly and becoming more complex. It requires new strategies for compliance with national and international scenarios. Developing each project is associated with many limitations, including time, cost, changes, wastes, and errors, which are often not avoidable. Due to numerous project stages and complexities in the construction industry, usually, different mistakes and duplications occur. Meanwhile, Building Information Modeling (BIM) has created one of the most important and essential changes in this industry and results in more in-depth cooperation among project stakeholders. BIM is one of the most recent innovations in the construction industry, which resolves the problems of projects faster. BIM can be applied by architects, engineers, contractors, project managers, etc. to achieve objectives such as reducing design errors, reducing time and cost, improving design and construction integration, and increasing coordination and cooperation among different sections. Given the significance of project success in every country and several problems in each project, using BIM is an appropriate solution, which its proper implementation requires understanding its benefits that is the main aim of this study. This research identifies and classifies these benefits through the Systematic Literature Review (SLR) method, describing the significance of using BIM in infrastructure projects.

https://sciendo.com/pdf/10.2478/jeppm-2020-0015

Benefits of Implementing Building Information Modeling (BIM) in Infrastructure Projects

Modeling the robotics implementation barriers for construction projects in developing countries

Cost performance in the construction industry is important to enhance industry standard and grow a country's economy. This paper examines the key factors affecting cost performance in Thai construction projects, specifically at the pre-construction and construction phases. A questionnaire survey is used to gather data for the exploratory factor analysis (EFA) and structural equation modelling (SEM) analysis used in this study. The EFA technique extracted the key factors affecting construction cost, while the SEM revealed the interactions and causal relationships between those key factors. The EFA results confirm seven key factors: three at the pre-construction phase: lack of coordination, design management, and unclear client requirements; and four at the construction phase, including site management, resources, labour capability and contract-related. The SEM results confirm strong relationships, directly and indirectly, between the three key factors at the pre-construction phase. Good coordination between stakeholders result in less design errors and clear client requirements. The influences that the three factors at the pre-construction phase have on the four factors at the construction phase are also supported. The result highlights that unclear client requirements cause poor site management and cost overrun, which may lead to breach of contracts. Construction companies can use this study results to better plan for cost improvement by focusing on the identified pre-construction factors, as they could lead to good cost management during the construction phase.

/pdf/factors-affecting-construction-costs-in-thailand-a-1rav5ldwx5.pdf

Factors affecting construction costs in Thailand: A structural equation modelling approach

Planning and construction of infrastructure projects are increasing rapidly as the vital lifeline of countries for welfare and economic development; which considering cumulative population growth, they are in the center of attention more than ever. High investments, negative effects of early destruction and available duplications in these projects have enlarged necessity of focus on existing post design problems. In order to reduce problems of post design stages in infrastructure projects, constructability, operability, and maintainability concepts can be used in the initial pre-construction stage, which is a project management technique for reviewing post design processes from beginning to end. These concepts emphasize on early presence of construction, operation and maintenance contractors at the early phases of the project, so that through integrating knowledge and experience, reduce problems due to lack of applying them at the early stages of the project. Lack of comprehensive and centralized research that study benefits of applying these concepts, made researchers to conduct this project. This investigation, by the aim of evaluating benefits of applying these concepts in infrastructure projects and by using meta-synthesis method and utilizing qualitative analysis software NVIVO, has classified these benefits in different phases of the project life cycle. Finally, a classified structure of the benefits of implementing these concepts in different phases of the project has been provided; which by evaluating the obtained results and applying them, experts and various agents of the project can share their experiences and knowledge with each other efficiently. This study results in reduction of available problems due to lack of applying the concepts at the early stages of the project by highlighting awareness toward such brilliant benefits presented in the world investigations.

Benefits of Using Constructability, Operability, and Maintainability in Infrastructure Projects: A Meta-Synthesis

Having integrated contractual strategies for projects and developing a transparent and unambiguous contract is highly effective for properly implementation of constructability. This study uses inte...

A practical framework to facilitate constructability implementation using the integrated project delivery approach: a case study

In fact, constructability is facilitating the construction of a project through integrating knowledge and experience to achieve the overall and common objectives of the project in all stages of it, but practically there is still a significant gap between design, construction, and achieving the desired project objectives. Studies show that separating the design and construction processes and lack of presence of the contractor in the design stage, prevent the effective use of experiences and specialty of the contractor to improve and develop design processes. This issue results in increasing project time and cost, poor relationships, and also increasing project waste and duplication. The barriers to implementing this concept can have major differences with each other in different locations all over the world, due to the unity of the executive conditions in various countries. This paper evaluates the existing practical barriers to implementation of constructability in the construction industry. A comprehensive literature review has been performed by the authors through using the Meta-Synthesis method and findings were used to form research assumptions. Three case studies of Mass Housing project (MHP) in Tehran were instigated. Outputs taken from nine interviews with different experts in this industry working in diverse areas, including owners, consultants and contractors are then ranked after theoretical saturation compared using the NVIVO Software and through pattern and descriptive analyses. The concept of constructability is focused on the early presence of contractors in the initial stages of the project. So that, through integrating knowledge and experience, problems due to lack of their presence in the early stages of the project can be reduced. Comparing the existing barriers to implementing constructability in Iran with those of the wider world, presents some effective solutions to facilitate the presence of the construction contractors in the early stages of projects.

/pdf/evaluating-the-existing-barriers-in-implementing-3mem19jhc2.pdf

Evaluating the Existing Barriers in Implementing Constructability

http://www.ppml.url.tw/EPPM_Journal/volumns/07_02_July_2017/01_ID_155_7_2_55_62.pdf

Samereh Jadidoleslami

Papers

Constructability obstacles: an exploratory factor analysis approach

Benefits of Using Constructability, Operability, and Maintainability in Infrastructure Projects: A Meta-Synthesis

A practical framework to facilitate constructability implementation using the integrated project delivery approach: a case study

Evaluating the Existing Barriers in Implementing Constructability

Research Trends on Benefits of Implementing Constructability, Operability, and Maintainability