Weerasinghe, A S; Ramachandra, T and Rotimi, J O B (2022) Towards sustainable commercial buildings: An analysis of operation and maintenance (O&M) costs in Sri Lanka. Smart and Sustainable Built Environment, 11(3), pp. 454-468. ISSN 2046-6099
Abstract
Purpose: Rising energy costs and increasing environmental concerns are catalysts for introducing sustainable design features in buildings. Incorporating sustainable design features in commercial buildings cannot be overstated because it could confer benefits to the investor (owners) and occupants. This study aims to develop a model that could aid in the prediction of operation and maintenance (O&M) costs from the knowledge of building-design variables. There is little evidence that design variables influence the O&M costs of buildings. Therefore, this study investigates the relationship between design variables and O&M costs in commercial buildings with the intent of developing a cost model for estimating O&M costs at the early design phase. Design/methodology/approach: The study was approached quantitatively using a survey strategy. Data for the study were obtained from 30 randomly selected commercial buildings in the CBD in Colombo, Sri Lanka. Pareto's 80/20 rule, correlation and regression analysis were performed on the data to prove the statistical relationships between the buildings' O&M costs and their design variables. Findings: The study found that 12 significant O&M costs elements contribute to about 82% of total O&M costs. Repairs and decoration had a strong correlation with building shape. Furthermore, the regression analysis found that O&M costs values were primarily dependent on the building size (the gross floor area and height of the buildings). The gross floor area and height handled over 73% of the variance in the O&M costs of commercial buildings in Sri Lanka. Originality/value: These findings are a useful insight into the principles for design economies that could contribute to more sustainable commercial buildings.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | commercial buildings; design variables; operation and maintenance costs; regression analysis; sustainability |
| Index terms: | design phase, Sri Lanka, regression analysis, variance, investor, gross floor area, owner, environmental concern, cost model, evidence, commercial building, methodology, estimating, repair, energy cost, sustainable design, operation and maintenance, survey, strategy |
| Subjects: | management, maintenance engineering, research methods, Geography, design process, measurement and scaling, sociology, building performance, statistical analysis, cost management, construction type, data collection methods, evaluation and assessment methods, environmental issues, professional practice, financial and cost management |
| Topics: | Design Practice, Sustainability, Construction Technology, Stakeholder Management, Research Practice, Geographical Context, Cost Management, Business Strategy |
| Descriptive scope: | 5 PCTEA |
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