Housing component | Adaptation measure | Description | Adaptation cost | Benefit |
---|---|---|---|---|
Roof cladding | RF. Strengthen CTB connections | Increase BMT of metal roof sheets from 0.42 to 0.48 mm, and upgrade the screw fastener from M6–11 to 14–12. | 0.7% | Improve the uplift capacities of CTB connections with the mean pull-over and pull-out capacity increased by 25% and 7% respectively. |
Window | WS. Install shutters | Cyclone-rated steel roller shutters tested for wind pressure up to 2500 Pa. | 2.0% | Reduce wind pressure and the amount of wind-driven rain acting on windows as shown in Fig. 9, and hence decrease the probability of windward dominant openings. |
WR. Higher window rating | Increase the window rating to a higher level (e.g. N2 to N3). | 0.4% | Increase the ultimate strength and water penetration resistance of windows according to Table 2. | |
Building interior | IW. Water resistant materials | Use water-resistant plasterboard for ceiling and internal wall finishes. | 1.0% | Improve water resistance of building interior and reduce rainwater damage as shown in Fig. 10. |