![]() ![]() While the individual parts of a guardrail assembly may comply with load requirements, the assembly itself should not detach from the building when the specified loads are applied. This means that glass panels in a balustrade must resist loads of up to 200 pounds per square foot. Infill components, such as balusters, have a lower resistance requirement of 50 pounds per square foot however, if the infill includes glass, a safety factor of 4 should be applied to the design load calculation. To support the weight of a person leaning on a balustrade or accidentally walking into one, the assembly must be designed to resist a concentrated live load of 200 pounds or a distributed live load of 50 lbs/ft applied at the top of the railing in the vertical or horizontal direction. Current versions of the California Building Code (CBC) and the California Residential Code (CRC) require the space between two balusters, or a baluster and a newel post to prevent a 4-inch sphere from passing through. As a result, gaps in railing proved to be a deadly hazard, with cases of children falling to their deaths after slipping through gaps of 6 inches or less. These preventable tragedies forced revisions of allowable railing gap dimensions. preventing children from getting stuck in the balustradeĮarlier building codes did not consider all these factors. ![]()
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