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.

Negative Positive
 
Tropical Storm
  • Unprotected glazing systems in a wind-borne debris region.
  • Glazing protected with shutter that can not be installed in a timely manner.
Tropical Storm
  • Missile impact resistant glazing or shutters provided for glazing and non-reinforced doors.
Winter Storm
  • Inadequate maintenance of glazing systems (broken glass, corrosion or rotting of frames).
Winter Storm
  • Laminated glass or shutter provided for glazing systems.

  • 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.