Building Openings (glazing, doors)
For areas affected by tropical storm, debris impact resistance needs to be considered, as the impact to volatile building structures can prove costly.
Wind-borne debris regions include:
- Regions where the 50-year mean recurrence interval wind speeds (measured as a 3-second gust) are 193 kph (120 mph) or more.
- Regions within 1.9 km (1 mile) of a coast where the wind speed is 177 kph (110 mph) or more.
- For tropical storm wind-borne debris regions, provide glazing systems that are tested and approved in accordance with ASTM E1886 and ASTM E1996. Large debris impact resistant glazing should be provided within 9 m (30 ft) of grade. Small debris impact resistant glazing should be installed within 9 to 18 m (30 to 60 ft) above grade or within 9 m (30 ft) above aggregate covered roofs with 460 m (1,500 ft).
- For tropical storm wind-borne debris regions, provide shutters to protect glazing and unreinforced doors. Expand the typhoon/hurricane emergency plan to include the time and personnel needed to install manual shutters or closed fixed shutters.
- For urbanised areas within winter storm regions, provide impact resistant, laminated glass systems.