Concrete deck piers7/23/2023 ![]() ![]() This variation typically makes more sense where shallow footings are required because hand digging will be required. Square footings offer the benefit of maximizing the surface area for soil compression. You can modify this type of footing by using a rigid plastic base form that is engineered to create a flared base to help prevent frost heaving. Also, this type of footing makes it much easier to replace a post if one ever becomes damaged. Once the footings are in place, they will provide permanent visible evidence of the support strength of the structure. Using an adjustable post base can give you a little more room to work with.įootings that use concrete piers offer several advantages over other methods. The anchor, post base and support post will have to come together in a relatively small area. Post bases are designed to lock into the concrete anchors and connect to the support posts. Some anchors are set while the concrete is still wet others are predrilled and then tightened with a wrench to expand into the hardened concrete. There are different kinds of concrete anchors to choose from that can be installed. The top of the pier will need to be fitted with a concrete anchor and post base connector in order to accept the deck post. In order to sufficiently connect the footing to the pier, you will want to use two L-shaped pieces of rebar. That said, Diamond Piers should work for many deck frame applications.For larger diameter footings, it is more practical to pour a footing base to the appropriate size and depth and extend the footing to the surface with a smaller diameter pier. But if the soil is too stony, it might not be the best fit. There are ways to maneuver around stones and obstructions in the soil, a topic discussed on their website, here. Not the right fit for every projectĭiamond Piers have a wider bearing area, which means your “call to dig” area is about 3 feet from the center of each pier location, and obviously these can’t be installed too close to walls. But it probably goes without saying, but please get these approved on the plans, instead of surprising the site inspector. And for planning officials who need a little more reassurance, the helpful folks from Diamond Pier are willing and able to speak with the building department on your behalf. The first step in preparing your The dimensions of footings also depend on the size and type of. This ESR alone will earn the Diamond Piers acceptance by building departments on your plans most of the time. A typical deck pier footing that Concrete Footings. jackhammers available for rent, along with the specialty pin driver bit, and we rent and sell the driver bits separately as well.ĭiamond Piers have an official Evaluation Report from ICC Evaluation Services. – No need for a separate holes inspection – start framing on them immediately. Caps on the steel pins can be removed so that the inspector can measure the pins for length and code compliance. – There is a bolt already cast into the high-strength concrete, ready for a post-base. Each pier takes less than 30 minutes to install – no digging 3 feet deep, hauling away that dirt, or waiting for concrete to dry. – In some projects, Diamond Piers could save days of work. – DP 50/50 is good for a frost zone depth of 48″. ft., structurally the same as a 20″ diameter concrete pier. – These load capacities give each DP 50/50 the equivalent base area of 2.2 sq. depending on soil), uplift capacity of 1,200 lb., and lateral capacity of 600 lb., as shown in this load chart. – Each DP 50/50 has a bearing capacity of 3,300 lb. “Where has Diamond Pier been all my life?” If you’ve ever pulled weeds in a garden, or appreciated the beauty and strength of a tree, you have noticed the extremely effective design of roots, as they go into the earth at an angle. It makes intuitive sense – a heavy cylinder is maybe not the most effective or efficient shape for bearing or uplift loads. bags, or scheduling a mixer truck and using wheel barrels… And it’s only going to get worse, as the 2018 ICC includes stricter footing tables, sometimes requiring diameters of 18-20″. Digging 3 feet deep – w hat are you supposed to do with all the dirt anyways? S cheduling a separate inspection for the holes carrying 60 lb or 80 lb. …Then it’s high time we address one of the LEAST ENJOYABLE parts of a deck project: concrete piers. If our motto is “MORE ENJOYABLE deck projects” block with 4 – 63″ galvanized steel pins), bearing capacity 4,200-6,400 lb., for roofs and larger structures block with 4 – 50″ galvanized steel pins), bearing capacity 3,300-4,400 lb., for most deck frame applicationsĭiamond Pier 75/63 (75 lb.
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