What are the safety and risk factors to the community and environment?

Decision matrix

The nine most import criteria according to data obtained from(Figure 15) amended from ‘indicators of appropriateness’ responses(EWB Challenge, 2019a) were the influence for deciding on the five design criteria and the weighting factors.

Weighting factors were given a score out of 100 for importance and then given a rating out of ten for criteria. The final score was reached by multiplying the rating by the weighting factor, this formula resulted in the most suitable design option.

1. Functionality. How well will the design function for the community and is it practical?

2. Safety/Risk. What are the safety and risk factors to the community and environment?

3. Cost. How economically viable is the design for the community to construct and maintain?

4.Usability. How easy are the designs for the community to use, for both men and women?

5. Sustainability. How sustainable are the designs for long term management,maintenance:- physically, economically and environmentally?