| Item | Challenge | Scale and No. of Response | Total | RII | Ranking | ||||
| 1 | 2 | 3 | 4 | 5 | |||||
| a) | Lack of experience and training | 0 | 5 | 6 | 12 | 5 | 28 | 0.721 | 1st |
| b) | Construction culture and behaviour | 2 | 5 | 12 | 5 | 4 | 28 | 0.629 | 2nd |
| c) | Poor understanding of SWMP by stakeholders | 3 | 6 | 10 | 3 | 6 | 28 | 0.621 | 3rd |
| d) | Lack of awareness on-site | 0 | 8 | 14 | 3 | 3 | 28 | 0.607 | 4th |
| e) | Low financial incentives | 1 | 8 | 9 | 5 | 5 | 28 | 0.600 | 5th |
| f) | Increased overheads | 0 | 10 | 9 | 8 | 1 | 28 | 0.600 | 5th |
| g) | Time Constraints | 3 | 9 | 6 | 7 | 3 | 28 | 0.586 | 6th |
| h) | Other, state: | 0 | 0 | 0 | 0 | 0 | 0 |
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