Should I specify or use a bent anchor bolt or a headed anchor bolt/threaded rod with a nut?

Right angle bend F1554 anchor bolts are a very common configuration for a generic anchor bolt that is commonly used for light poles, substations, and other common construction applications. However, Portland Bolt has seen a shift from the predominate use of bent bolts to a very large increase in specifying headed anchor bolts or a threaded rod with a welded nut.  In fact, AISC Design Guide 1 specifically mentions that bent anchor bolts have limited pullout strength when compared to headed anchor bolts or a rod with a welded nut. Design Guide 1 goes as far as to recommend headed anchor bolts and threaded rods with a welded nut as the recommended practice for anchorage moving forward. This being said, bent anchor bolts are still very common and Portland Bolt has an extensive inventory of both bent anchor bolts and headed anchor bolts to fulfill the requests of our customers.

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