Tag Archives: Safety

Lightning Protection and the Building Envelope

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Global warming could increase lightning strikes by 50 percent, according to recently published climatological research. The distribution of lightning activity may also change, raising the occurrence of lightning in regions that heretofore had little risk.1 At the same time, the need for lightning protection becomes more urgent as buildings are filled with increasingly sensitive electronic devices.

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The hazards of traditional wired glass

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For decades, traditional wired glass—with its crisscrossed wires creating diamonds or squares—was installed in buildings around the world. Thanks to its ability to remain intact even when broken, it was the first and, for years, only form of glazing available for fire door assemblies in schools, hospitals, and other buildings.

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Impactable Dock Doors Help Increase Safety in Warehouses

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Warehouse doors can help increase safety by helping protect the integrity of the floor. They are designed to prevent the elements from the entering the facility, and reduce the threat of condensation from creating a slipping/tripping hazard for those on foot or those trying to quickly maneuver forklifts in tight areas. They also serve to reduce impact accidents and injuries by absorbing ‘hits.’ To ensure the right assembly, there are numerous high-pressure and missile-impact tests that demonstrate the strength of the doors—important for facing up to high winds.

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Impactable Dock Doors: Florida Building Code (FBC) 1715.5.3, “Exterior Door Assemblies”

Exterior door assemblies not covered by Florida Building Code (FBC) 1715.5.2, “Exterior Windows, Siding, and Patio Glass,” or FBC 1715.5.3.1, “Exterior Door Assemblies,” shall be tested for structural integrity in accordance with Procedure A of ASTM E330, Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylight,s and Curtain Walls by Uniform Static Air Pressure Difference, at a load of 1.5 times the required design pressure load. The load shall be sustained for 10 seconds with no permanent deformation of any main frame or panel member in excess of 0.4 percent of its span after the load is removed. The design pressures, as determined from American Society of Civil Engineers (ASCE) 7, Minimum Design Loads for Buildings and Other Structures, are permitted to be multiplied by 0.6. High-velocity hurricane zones (HVHZ) must comply with Testing Application Standard (TAS) 202. After each specified loading, there must be no glass breakage, permanent damage to fasteners, hardware parts, or any other damage that causes the door to be inoperable.

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