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Safe Deck RailingsDeck guardrails offer builders a great chance to set a distinctive style and show off their ingenuity and craftsmanship. But plain or fancy, a deck guardrail must meet minimum requirements for strength and safety.Primary structural strength of a deck guardrail is provided by posts—preferably 6x6 or larger—that extend from the deck foundation or are fastened to rim or end joists at the deck frame perimeter. The key to building strong deck railings is to fasten railing posts in a way that resists the lever force exerted at the post base when someone leans against the top rail. How...

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