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  • Sonotube foundation vs just a hole with cement for Shed. . .
    Is there any difference between using a sonotubes to install 4 x 4s into for a shed foundation vs just digging a hole and inserting the 4 x 4s into the
  • How to PROPERLY build a Sonotube Sub??? | AVS Forum
    Second is the choice of sonotube and where to buy one What would the minimum height be to be effective? And is 20" the standard diameter? Can one go smaller (or bigger)? Suggestions? Third, is internal bracing needed? Fourth, any good Sonotube Sub sites out there?
  • Sonotube time. | Page 2 | DIY Home Improvement Forum
    Build a 2x4 square around the top of the sonotube and brace into place When it comes time to pour I will use a laser to get the exact height on the Simpson Tie
  • my diy 15in sonotube build - AVS Forum
    Sonotube sub questions - the variables Hoping for help understanding the variables when planning a DIY Sonotube subwoofer If I go really big with the tube size, does that allow a cheaper less good driver? Is a cheap 18” driver as good as a quality 15” driver? Does a bigger tube and bigger driver mean less amplifier power required
  • sonotube how to - DIY Home Improvement Forum
    Place a tube all the way to the bottom of the hole Place the tube only a foot or so down from grade and fill with concrete In the second case concrete would be contacting dirt for the bottom 30 inches and then sonotube for the top 12 inches What is the preferred method for installing a sonotube? Is there a better method I have missed?
  • Sonotube depth for footings - DIY Home Improvement Forum
    A 20" diameter sonotube would do that Or you could use a 12" sonotube with a bigfoot type bell on the bottom that flares out to 20" diameter BTW, I think you are right that 400 psf clay would be pretty obvious Have someone who weighs about 200 pounds stand on 1 foot on your soil That's probably slightly more than 400 psf on their shoe Do
  • posts for pergola - DIY Home Improvement Forum
    I'm building an 8 X 10 pergola, using four, 8"X10' posts I plan to dig down four feet, below the frost line, ledge allowing Will I be okay using a 12" Sonotube or must I use a bigger size? Sonotube specs 3X the post thickness but I can't imagine anyone using a 24" Sonotube except for large
  • Proper sizing for deck footings - DIY Home Improvement Forum
    If you use a bigfoot sonotube, the bottom of the tube flares outward, so the area of the bottom is larger than the tube With standard sonotubes, the hole is excavated a little larger than the tube, the tube is inserted and filled with concrete (and rebar if required), and the tube is typically left in place
  • Digging for sonotube - DIY Home Improvement Forum
    Digging for sonotube Jump to Latest 97 views 12 replies 6 participants last post by Thom Paine Mar 16, 2026 T
  • Sonutube vs Footer? - DIY Home Improvement Forum
    If I use a sonotube that extends down past the frost line 3ft, would I need to still have footer underneath that? I am creating a car port for lawnmower ATV that will be 8 ft x 16 ft Corner supports would be 6 x 6 posts and would only be supported the roof (2x6 with galvanized roofing what is the purpose of footer on a sonutube?





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