I've included two pictures which display different ways to triangulate the cantilevered end of your TAB should you be significantly loading the TAB. This means the capacity of your connections is 5 times greater than the total weight of the structure + the total weight of the people in the structure. If you will not be installing a suspension system with the TAB, don't forget to order a hex nut to add at the end of the TAB. http://www.abqjournal.com/431736/documented-fatal-... None of your links are viable. Animal Planet's TV show, "Treehouse Masters", is doing a special episode where Pete Nelson will give two EXISTING treehouses a little renovation! Sorry for so many questions... it just seems to me that the forces are not being properly supported here. (The lime doesn't damage the tree at all, and as it washes into the ground provides useful nutrients for the tree). Check often using the Torpedo Level during this process as well until the Auger is to deep. Use a hammer to knock the first couple threads in into the hole. Enter the type of wood in the Text Search option in the middle of the page - try Oak and you'll see a bunch of options. It's a tree-friendly piece of hardware that allows the tree to grow around the TAB, making the connection even stronger over time. Would it not be better used as anchor point that is not pierced into the tree, itself? * There, we conducted a series of directional tests on our Standard Limb (SL) and Heavy Limb (HL) TABs in two different tree … This is illustrated in the pictures by the triangle plates. Pre-drill the tree and the 2 x 8's prior to attaching them to one another, as it will make it easier to install and decrease the odds that the boards will crack. I have seen people use large ropes to secure the structure to the tree. Treehouse Attachment Bolts (TABS) This NEW DAVCO multipurpose product is an ÉASY INSTALL support option for builders of smaller tree house projects or anywhere there is a need to create a … http://www.Xplorefilm.com How to build the best treehouse. Heavy Duty Treehouse Attachment Bolts Our new … Continue reading Treehouse Supplies introduces the New Heavy Duty Line of Treehouse Hardware. #2 - Hold the TAB level and start turning the bolt into the tree very slowly to ensure the first couple of threads catch the wood. This will ensure a smoother installation of the bolt. Anything is possible. It would be impossible to cover even a portion of the tree health category sufficiently so I've provided a number of helpful links below to get your research . Make sure to install the bolt directly after drilling the hole. Now it's time to attach the floor joists to the tree. I can tell you from experience that 3/8" bolts will not withstand hurricane force winds. No more parasites - not even the naturally occuring ants. This means that the total capacity of your connection points (if load and center of mass is distributed evenly) should be have a 5X safety factor. How uninformed are you? Not really. See /r/spiders on reddit for more information :). We are humans. He used 3/8" lag bolts to attach the main beam to the tree. I choose to do this because my bolting system allows for moement between the two bolts and there for the trees. This heavy piece of hardware is the most important structural element of treehouse-building. The other side of the beam has a similar plate only on this side the plate has a long slot shaped hole. That's my thought. Daryl, expert Nelson Treehouse and Supply builder, gives us the run down on what a TAB (Treehouse Attachment Bolt) is and why you need it. There is about a two hour window to install the bolt, after this it will become progressively more difficult. It's in our nature to dominate. By drilling holes, rather than driving nails into the tree, you eliminate splintering, so effectively what happens is that the area around the bolt dies and goes from living tree into... wood. I just have an reasonable fear - I can't even look at photos of them, but thank you for your input. Share it with us! deep footings. Read more about our hardware, here. The “boss,” the thicker piece of 3” diameter steel, provides the majority of the TAB’s compressive strength and allows for greater distribution of load. I've been trying to figure out how to use lag bolts from Home Depot as a cheap alternative to purchasing actual Treehouse Attachment Bolts, but the more I research, the more I realize that it's a bad idea and won't work, since it's nearly impossible to find out ahead of time what metal a Home Depot bolt … Each year the screw … Once the hole is completed use a long straw to blow all of the wood chip debris from out of the hole. 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