Browsing by Author "Janardana, JAB"

Now showing 1 - 3 of 3

item: Conference-Abstract
Barriers in practicing life cycle costing techniques experienced by Sri Lankan quantity surveyors
(2021-07) Sandaruwan, IPT; Chandanie, H; Janardana, JAB
Life Cycle Costing (LCC) is a tool, which can evaluate all the building-related costs over a specified period of time, as mentioned in the agreed scope. Though there are number of benefits, LCC practices of consultants in the building industry are claimed to be weak. Hence, the aim of this research is to investigate barriers in practicing LCC techniques experienced by Sri Lankan quantity surveyors. Accordingly, a mixed approached was followed in data collection through a questionnaires survey and a series of expert interviews. However, in Sri Lanka, building construction consultants are not practicing the LCC concept to a greater extent. This research identified, lack of awareness on the LCC tool by employers and practitioners, lack of knowledge on LCC and lack of previous data as the major barriers for practicing LCC techniques in local context. It was suggested that enhancing the practice of LCC through conducting various awareness programme on LCC concept, build up and maintain the proper database and introducing user friendly tools, applications, calculations methods, guidelines and regulations, will lead to avoid above mentioned barriers, which will ultimately enhance the proper practice of LCC concept in the Sri Lankan quantity surveyors.
item: Conference-Full-text
Data science applications for carbon footprint management in buildings: a systematic literature review
(Ceylon Institute of Builders - Sri Lanka, 2023-07-21) Sandaruwan, IPT; Janardana, JAB; Waidyasekara, KGAS
Buildings have a significant impact on climate change. The building industry is the world’s biggest energy consumer and the building's operation accounts for 80–90% of its total energy consumption over its lifetime. Data-driven solutions for the management of carbon footprint in buildings have great potential due to the data science field's rapid growth and the expansion of operational building data availability. Therefore, this study's aim is set as to investigate the potential applications of data science for the management of carbon footprint in buildings. The study adopted a systematic literature review as a research methodology. Accordingly, 31 publications were reviewed using the content analysis technique. The study revealed that facilitating pre-process of the operational data of buildings, fault detection and diagnosis, implementing waste management in buildings, conducting the building energy performance modelling, conducting the parametric analysis at the design phase, evaluating the energy efficiency of building designs, benchmarking evaluation, control optimisation and retrofitting analysis are the major applications of data science to the management of carbon footprint in buildings. Moreover, the study suggested carrying more studies should be done on automating and building operational data pre-processing tasks, gathering sufficient labelled data for all possible faulty operations and applying modern big data management tools and advanced analytics techniques lead to improve the applications of data science in the built environment. The results from this study provide better guidance to building sector stakeholders, information technology sector stakeholders, academic persons, non-governmental organisations (NGOs) and other relevant authorities to address the carbon footprint in buildings using data science applications.
item: Conference-Abstract
Suitability of ICTAD formula and CIDA price indices to calculate the amount of price escalated in construction projects
(2021-07) Janardana, JAB; Samaraweera, A; Jayasena, HS
Price fluctuation is a significant risk factor, in every construction project market. It is unavoidable and difficult to forecast. However, it is often argued that there is a difference between the amount calculated with the CIDA price fluctuation formula method and the actual price fluctuation. Therefore, the aim of this research is to investigate the industry opinion on whether there is a difference between price escalations calculated using the CIDA price fluctuation formula and actual price fluctuation. A qualitative research approach was selected to achieve the aim of this research. Through a broad study of literature, it was identified the most critical factors which affected actual price fluctuation deviation. Meanwhile, semi-structured interviews were carried out to identify the reasons affecting fluctuation difference by analysing the data, which was used, and comparing the opinions given by the interviewees. The data was analysed using context analysis. The results of the research confirm that. there is a difference between the amount of price escalation using the ICTAD price fluctuation formula and the actual being used. The main reason behind this difference is the less accuracy of cost indices. To improve the accuracy of the results of this formula, appropriate data collection using an appreciate sample of contractors in producing price indices is recommended as the main.