![]() Cons: Steel poles can deteriorate over time, and treated wood piles may not last as long as concrete.Īdvantages: Rammed earth is produced by compacting moist soil between temporary forms. Pros: Treated wood piles and steel columns are acceptable alternatives to concrete footing design and are allowed by building codes. Cons: Not available everywhere (expert contractors must install them). Helical pillars require less digging and have the advantages of working well in areas with poor soil or high groundwater levels. Cons: To support the deck and withstand lateral forces, these pillars must be appropriately sized. Precast concrete deck piers that come with a fitted recess at the top of the pier to receive 4×4 deck posts or come with a metal saddle that serves the same purpose have advantages over precast footing blocks. Cons: The ability of the soil to support the weight of the pin or pipe determines its size. The advantages of pin footings are that they are easily driven into the ground with a demolition hammer and there is minimal impact during installation. Here are some of the advantages and disadvantages of each option for concrete pier block: What are the pros and cons of each alternative? Hempcrete is made by mixing lemon and hemp fibers.įly ash, slag and silica fume are recycled materials used to make greencrete. Waste sawdust and cement are used to make timbercrete. In areas with poor soil quality or high water levels, the system performs well.īuilding codes also allow the use of steel piers and treated wood piles as an alternative to concrete footings.Īnother option is rammed earth, which is created by compacting moist subsoil between temporary forms. ![]() Helical piers: These can reduce the amount of excavation required, but are not available everywhere (they require specialist contractors to install). It is important to remember that these pillars must be of appropriate size to support the deck and withstand lateral forces. They are available at many building supply stores. Precast Footing Blocks: These are precast concrete deck piers that have either a metal saddle or a fitted recess at the top that receives 4 by 4 deck posts. The bearing capacity of the soil determines the size of the pin or pipe. With the help of a demolition hammer, pins are driven into the ground through these holes. They are installed to have as little impact as possible on the surrounding landscape.Ī reinforced concrete anchor block with built-in guide holes is part of the pier. Pin footings are a low-impact alternative to standard pier footings. There are several options of concrete pier blocks that you can consider for your deck. What are the alternatives to concrete pier blocks? Here I am going to explain to you about “Concrete pier block” in detail. Their biggest drawback is that you should never drive them into the ground as doing so can lead to rotting of the wood deck posts. It’s important to note thatConcrete pier block have both advantages and disadvantages if you plan on using them for your deck. They must be at least 12 inches below grade or below local frost depth, and they must have adequate bearing area. ![]() The highly concentrated load at the bottom of the pillars is intended to be spread through them on solid ground.Ī “ precast foundation“, a foundation type recognized by building codes, is simplified by deck blocks. One type of traditional building material is used to support wooden deck posts: concrete pier blocks.
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