Architectural · A-G9NGV

Light Fixture Restraint Detail

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A typical lay-in fluorescent troffer is installed within a grid tee ceiling and anchored to the overhead structure with safety hanger wires. For fixtures weighing fifty-six pounds or more, four number twelve gauge hanger wires are attached to the structure above at each corner of the fixture, installed vertically with a maximum tolerance of one in six out of plumb. For fixtures weighing less than fifty-six pounds, slack wires may be installed at two corners only. An earthquake clip is secured to each of the four corners for a total of four clips connecting the fixture to the ceiling grid.

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