One is when the pile bottoms out on a large rock. Helical piers don’t require any excavation, and there’s no need for concrete trucks. Here, he discusses the parts of a helical pile, how to install one, and how to attach it to a structure. There's no spoil dirt to lose on the site or haul away. It is possible to have multiple piles installed in a matter of … Apr 2, 2017 - Explore Dave Keating's board "Helical pier or pile" on Pinterest. Without a soil engineering report, it's impossible to know the exact bearing capacity of the soil, so I'd usually over-build the footing to be safe. So today we're setting the footings for a fairly large deck that's going to be going in this area and what we use are engineered helical … Adding Fascia and Other Decorative Elements, Laying Out, Cutting, and Installing the Stringers, Installing Treads, Risers, and Stair Railings, Expert insights on techniques and principles. Figure 11. It would have been impossible to dig a traditional footing in this ground without it filling with water. If the concrete will come from a truck, how will it be moved to the hole? Many store-bought DIY versions of the screw pile, such as the Pylex helical screw piles, offer u-shaped heads that can hold a 4×4 or 6×6 wood post. Figure 7. The helical pier is screwed into the ground with a hydraulic torque motor. A thriving industry offers concrete-free alternatives for additions, deck footings, and foundation repair ... but designer Michael Maines decided to build the structure on helical piles instead. He’s also a Contributing Editor for Tools of the Trade magazine and a frequent author for The Journal of Light Construction and Fine Home Building.He has been a presenter and speaker for the National Association of Remodelers (NARI) and large building supply companies on advanced deck building and business topics.A deck and construction industry insider, Greg’s notoriety affords him close personal connections with major industry manufacturers assisting them with product development, design and testing of new and existing building materials. The dynamic loading imposed by an impact load is surprisingly large and correlates to the static load a pile can handle. About two years ago, I stumbled upon a photo of a deck project that wasn't built on concrete piers, and I emailed the contractor to inquire about what he had used. Helical piles are screwed through many different layers of earth until it hits the bedrock. The costs can vary regionally and with the size and depth of the pile, but our typical residential helical pile costs $150 to $250 installed. However, because the deck was to be built over uncompacted fill, those footings needed to be 14 ft. … Instead of massive concrete footings, helical piers—each capable of supporting 5,000 to 8,000 pounds—were installed to support the freestanding deck. The load-bearing capacity of a helical pile usually relates to the amount of torque required to install it, a function of both the size of the helical plate and the soil's bearing capacity. A pressure gauge on the installation machine reads the torque as the pile is rotated into the ground (Figure 5). Helical piers (shown installed below) have been around for over a hundred years, but have only become more widely known within the last 20 years or so. While a floating deck might be next to a building, it may also be a standalone structure in the middle of your yard. Some of the machines used to drive the piles are small enough that they can be used inside a house — for example, to add a footing to a basement. Fully meets the Ontario Building Code. Home owners and contractors can build or repair decks and porches effortlessly and be guaranteed a strong, stable, and durable structure. Load testing, as opposed to taking a torque reading, is done in several instances. Load testing a helical pile is far simpler than it sounds. For my company, the advantages of helical piles far outweigh the drawbacks, but that might not be the case for yours. How do you know that the soil will support the structure? If the soil is weak, the pressure gauge will read low numbers, which means the pile must be screwed in deeper to stronger soil. Finally, there's the value of an engineered product. Helical piles overcome all of these concerns. The installation machine generates sufficient torque for the helix to push rocks out of the way as it turns. Nearly all cities have recognized helical piles as a superior foundation option for decks, 3 season porches and additions. When you account for all the costs of conventional footings, helical piles are surprisingly affordable. Typically, piles for residential use are hot-dipped galvanized steel (Figure 2). Become a member and get unlimited site access, including the Two big ones are that they eliminate the tasks of digging footing holes and dealing with concrete. "What do you do when you hit a rock?" Also, some installers are used to doing heavier commercial work and may charge commercial pricing, even for residential work. There are some locations where I don't even bother trying to install piles because every lot on the street was blasted out of bedrock. But it turns out that they have been used for more than 100 years in the United States, mainly on heavy commercial projects. If the soil is particularly corrosive, sacrificial anodes (similar to those used to protect underground LPG tanks) can be used. Some manufacturers sell piles to anyone with a check that doesn't bounce. A ground-level deck, sometimes referred to as a floating deck or platform deck, is so-called because, unlike conventional decks, a ground-level deck is not attached to a home or building. When poor soil conditions mandate going deeper than the standard 7-foot-long shaft, an extension is welded on (Figure 6). Figure 8. sandy soil) and where a traditional foundation just isn’t the right choice. The owner almost abandoned the project after finding that concrete footings would cost $20,000. Additionally, I always wondered how much weight my concrete piers could support. Make sure your installer is properly trained and can provide engineering backup for their work. Synopsis: Helical piles are steel footings that screw into the ground. is a question I hear frequently from contractors considering helical piles for the first time. Helical piles are screwed into the ground to below the frostline using hydraulic machinery (Figure 4). The 50″ helical screw pile from Pylex. This pressure reading is plugged into a formula called a torque correlation that calculates the actual bearing capacity of the pile. Next, a cap is inserted into the pile to protect its top. “Passionate” is the best word that can be used to describe Greg DiBernardo. Watch as Adrian and Brett from Techno Metal Post explain how engineered helical piers can replace concrete footings in your deck and landscape projects. Chances are he or she has limited to zero experience with helical piles, so you may have to provide supporting documentation along with your construction drawings. Digging the holes was only part of the fun. Hundreds of articles and videos by top deck-building pros on how to design and build a beautiful, sturdy, and safe deck. per square inch—enough force to lift even a large building. Once the ground is warmed, the pile is driven normally (right).Photo credit: Dave Northup. Like any shallow foundation in the Northern regions of the US frost is the main concern. My plan was to pour concrete footings, then run doubled up 2x8 beams setting on the footings. Several types of caps are available to attach piles to framing. After almost 20 years in construction, I became a dealer for Techno Metal Post (TMP), a helical-pile manufacturer. Sometimes, the pile has to be steered around a below-grade rock by moving the driver's boom. Then I'd load 80-pound bags of concrete mix into my truck, unload them at the job site, and carry them to the back of the house. The helical pile's bearing capacity usually relates to the torque required to drive it. a deck or addition), or replacing existing footings, helical piers offer a fast, easy and permanent way to put the best footings possible in place. There is no cleanup needed and as long as everything goes to plan it is quite simple and easy to install this type of foundation. Contact our expert team for help on any marine construction project You may experience some push back from your local building official the first time you propose helical piles. A gas or diesel engine drives a hydraulic pump that provides the power to spin the pile into the ground. Helical piles are screw-shaped plates welded to a steel shaft. Helical piers are basically a steel pipe or square shaft that has one to four steel plate “helices” welded onto it. The answer is, it depends. That's a big selling point to homeowners. 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