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Khan, Jam Shahzaib

Salehan Institute of Higher Education

Author-ID : 1003791

Civil Engineering, Building, Construction & Architecture

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Assessment of Change Orders Attributes in Preconstruction and Construction Phase Khoso, Ali Raza; Khan, Jam Shahzaib; Faiz, Rizwan Ullah; Akhund, Muhammad Akram
Civil Engineering Journal Vol 5, No 3 (2019): March
Publisher : Salehan Institute of Higher Education

Construction projects are very complex in nature. Each activity involves multiple varying tasks. Construction industry is the main source of economic growth. When change order occur performance of projects momentously affected.Â Change orders often have a serious impact on the quality, time and cost. Eventually it results in disputes, delays, and dissatisfactions among stakeholders and ultimately results in failures of projects. In past several studies have been done to evaluate the causes of change order and its effects. Attempts have been made to quantify these impacts by many researchers, but the aim of this study is to identify the causes of change order in two different phases i.e. preconstruction and construction stage. Views were taken from relevant experts over included factors after in-depth literature review from past researches. A questionnaire was made and floated with different construction players from clients, consultants and contractors side. The data was analyzed by SPSS using average index technique. The analysis of data showed that, Mistakes in specifications, Mistakes in design and Lack of experience in selecting construction team by client are the most critical factors during preconstruction phase. Whereas, Design modification by owner, change in scope at later stage and Delays in payment by client are most critical factors of construction phase, responsible for change order. The extensive discussion of these factors revealed various parameters related to Pakistan construction. This study will enable the clients, consultants and contractors to be aware of factors which causes changes in orders and their consequences on project completion. By the identification of possible reasons, the right decisions can be made to mark the project successful.

Embedded Life Cycle Costing Elements in Green Building Rating Tool Khan, Jam Shahzaib; Zakaria, Rozana; Aminudin, Eeydzah; Adiana Abidin, Nur Izie; Mahyuddin, Mohd Affifuddin; Ahmad, Rosli
Civil Engineering Journal Vol 5, No 4 (2019): April
Publisher : Salehan Institute of Higher Education

Green Building rating tools are the essential need of this era, to cope up with the sustainable development goals, climate change, and natural resource degradation through buildings. Realization of green building incentives decently increased within past few decades with abrupt declination in real estate markets and economic depletion has decelerated the interest of investors towards the green building projects. This research calculates influence of costing elements in MyCREST (IS-design) using questionnaire survey distributed amongst qualified professionals (QPâ€™S) of green buildings and expert practitioners. Firstly, factor score and then weightage factor was performed to produce the final result with weightage output for evaluating weighatge and ranking of the relevant criteria of MyCREST and life cycle cost elements respectively. It is found that the criteria of storm water management has weighatge of 0.236 as highest and criteria environmental management plan (EMP) as 0.061 as lowest. Research also identified another perspective by finding association of cost element at design stage of MyCREST and found that management cost is highly associated at design stage with the value of 87.7%. The outcome of this research will add value to green building development and map road towards sustainable development using green building tools to uplift quality of life. Furthermore, this paves a way to integrate various stages of MyCREST with life cycle costing tool to potentially contribute in evaluating cost association through green building rating tool.

Co-Authors Adiana Abidin, Nur Izie Ahmad, Rosli Akhund, Muhammad Akram Aminudin, Eeydzah Faiz, Rizwan Ullah Khoso, Ali Raza Mahyuddin, Mohd Affifuddin Zakaria, Rozana

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