ASD or LRFD – know the difference
This means that at a live to dead load ratio of 3 the LRFD and ASD design methods result in the exact same strength requirements. For live to dead load ratios of less than 3, the LRFD results in some level of improved economy compared to the ASD. For live to dead load ratios of greater than 3, LRFD requires higher strength levels than ASD,
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