![]() ![]() ![]() ![]() Concrete pier blocks don’t have any way to mechanically connect to the wood deck posts.The deck blocks can almost always be handled by one person.It’s important to realize the pier blocks are small and offer the least amount of support most decks require. There are more cons to concrete deck blocks than there are pros. It’s a minimalist approach to supporting a deck. Just as you pull on the cap to expose the pen, you can lift up a deck off the blocks. Concrete lugs on the block act like the sidewalls of a pen cap. A wood deck support post fits down inside the concrete pier block. Precast concrete piers must be set with a crane or backhoe on the job site.Ĭoncrete deck blocks are very crude and resemble the cap you might have on a cheap ballpoint pen. They cannot, however, be simply placed at grade level.ĭeck blocks are not to be confused with real concrete piers that are either precast and weigh hundreds and hundreds of pounds or with piers you cast in place using precut rebar reinforced plastic forms that can easily be placed and handled by the average person. They must have a sufficient bearing area (the area of the block that sits on the earth) and be a minimum of 12-inches below grade, or below the local frost depth. They’re subject to all of the same requirements as a typical footing, regardless of not being cast-in-place. What are Concrete Deck Blocks?Ī deck block is in many ways just a simplified version of a “precast foundation,” a foundation type recognized by building codes. Perhaps the biggest drawback to concrete deck blocks is their limited potential as you never want to bury them in the ground thus causing potential rot issues with the wooden deck posts. They are just one option for support deck weight and come with certain pros and cons. Their purpose is to spread out the extreme concentrated loads at the bottom of wooden deck posts onto strong soil. Concrete deck blocks are primitive building materials that look similar to children’s toys that snap together to build things. ![]()
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