Green Maintainability Design Decision Support System

1. Department of Building, School of Design and Environment, National University of Singapore, Singapore ashan.a@u.nus.edu A S Asmone and M Y L Chew Development of a Green Maintainability Design Decision Support System

2. Importance of outlining project requirements with all parties; Use past experience and good practices to decide on O&M requirements • Clear communication between all parties starting from schematic design phase of a project • Ensure all project priorities are considered • Discuss impacts of value engineering decisions Consultants only outline, leaving finer details for contractors to determine Local codes Space constraints Needs Wishes Maintainability strategies Budget Project schedule Vision Aesthetics • Forecast maintenance • Access for maintenance • Minimise defects • Enable simple maintenance !%$#^@&* INTRODUCTION (1/3)

3. Surface defects Fire safety: Grozny tower, Russia (2013) Research problem Safety considerations (slip and fall, falling objects) Structural integrity: Marble slab falling down to ground from 10 storeys - Australia (2012) Implementation of green maintainability aligned with multi-stakeholder objectives is identified as a decision making problem in selecting design alternatives  Research aim Objectives • To develop a decision-enhancing tool to deliver on optimal project output alongside green maintainability considerations • To develop a framework to facilitate a tool to assess green maintainability for easy adoption and effective assessment of facility designs for downstream maintenance issues • To extend the building maintainability framework with green maintainability indicators INTRODUCTION (2/3)

4. Definition: Concept of Green Maintainability Green maintainability refers to sustainable design and maintainability with green facilities management (FM) in mind (Chew, 2015) Achieving and sustaining optimum building performance throughout building life cycle at minimum external environmental, social and economic transactions INTRODUCTION (3/3)

5. Research design Research design Data collection Sources of data • Mixed approach (qualitative/ quantitative) • Multiple case studies • Purposive sampling based on building height, scale, function, and accessibility • Source of data: primary (through field survey) • Expert opinions • Secondary data: cost indices, maintenance records, codes and standards Conceptual framework for a green maintainability modelling METHODOLOGY (1/1)

6. Proposed green maintainability decision framework GM DSS (1/4) 6

7. Discussion on critical green maintainability indicators GM DSS (2/4) 7

8. Proposed green maintainability decision framework GM DSS (1/4) 8

9. Simplified steps of the proposed green maintainability DSS GM DSS (3/4) 9

10. INPUTS Green maintainability checklist for design evaluation GM DSS (4/4) 10

11. Green maintainability modelling of a single component (Example) EXAMPLE (1/1) 11

12. Summary Expected benefits Improved durability of facility systems through accurate maintenance forecasting Greener and smarter facilities which are resource efficient, pollute less and more productive by being safe and comfortable Improve communication and project visibility to streamline coordination and minimize clashes between various project teams • Lack of green maintainability is identified as a decision making problem • Use of MCDM for building modelling • Aid decision makers to achieve green maintainability • Green maintainability portrayed in monetary terms FINISHING REMARKS (1/1)

13. ashan.a@u.nus.edu Ashan Senel Asmone Development of a Green Maintainability Design Decision Support System