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Shoring existing structures can be a tricky business and the older the building, the trickier it can become. Many older structures do not have drawings of the existing construction and if they do, they are not always reliable. Many buildings go through generations of remodel with additions,...

A safety factor is like an insurance policy – you hope you never use it. Basically, a safety factor applies to the strength of a product; that is, the strength of a product is more than what is absolutely necessary for the product to work. Safety factors are expressed in terms of a ratio. For...