Deck Hardware Calculator

Calculate through-bolt loads and backing plate sizing for deck hardware installation

Input Parameters

Results

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Bolt Size
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Backing Plate Size
in
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Backing Plate Thickness
in
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Pull-Out Strength
lb

Reference

Safety factors: Cleats 3x, Stanchions 5x, Winches 4x Always use backing plates on cored decks 316SS bolts with fender washers below deck