Search literature (articles formally published in journals or books) to review the general concept of triple bottom lines (TBL). The review should include at least 10 references (not including web links). • Describe the relationship of TBL with sustainable development principles (SD), and its key themes as well as key questions in the lecture notes. • Discuss the significance of TBL in sustainable development (e.g. accountability, measurability, benchmarking and others) • Discuss the significance of TBL in sustainable construction (SC). • TBL reporting exercise based on Global Reporting Initiatives (GRI)