Anchoring Posts into Sonotubes

Submitted by Ana White on Tue, 07/17/2012 - 11:16

Do you remember last year when we poured the slab for the Momplex, that we used up the extra concrete to fill up these sonotubes?  (UPDATE: Thanks to all of you, I now know those are not spelled saunatubes!  hehe!)

Well, today, they are going to become more than just an obstacle to avoid in front of the Momplex.

Those posts are the foundations for the little roofs!

And today we are going anchor beams into those concrete filled sonotubes so we can start building those roofs.

Step 1 Diagram
Step 1

We've got entertainment up on the hill today. The boxes for the windows are keeping the girls occupied. Time to get stuff done!

Step 2 Diagram
Step 2 Instructions

The little roofs are like <a href="http://ana-white.com/2012/05/momplex/new-hair&quot; target="_blank">the new hair (or the front roof gable end) </a>on the Momplex. They are mostly decorative, making the very boxy looking Momplex look not so boxy. But they also will protect the garage man doors from snow fall and shed rain water.<p></p><p><img src="http://ana-white.com/sites/default/files/imagecache/Full/footers-for-de…; style="height: 300px; " alt="" /></p><p></p><p>Remember we'd filled the saunna tubes up in front to just the right height and screeded off the top, waiting for this very day. &nbsp;Today, we'll put anchors in and add the front beams.</p><p></p><p></p><p></p>

Step 3 Diagram
Step 3 Instructions

We start the construction with a concrete drill. If you build an ICF home, go buy a concrete drill. You will need it. We've used it for<a href="http://ana-white.com/2011/12/momplex/top-plates-hard-way&quot; target="_blank"> anchoring top plates</a> (brr, don't remind me!) to attaching interior walls to the ARXX blocks, and that's just the beginning. &nbsp;<p></p><p>We are drilling holes in the center of the concrete, keeping the drill square with the concrete surface. &nbsp;The bit is slightly larger than the concrete anchor bolts. &nbsp;There is some room for being "off" but it's always better to be as precise as possible.</p><p></p><p>After drilling the hole, a small tube is inserted in the hole and we use the leaf blower to clean out the hole.</p><p></p><p></p>

Step 4 Diagram
Step 4 Instructions

Then the concrete anchor bolts are tested for fit.

Step 5 Diagram
Step 5 Instructions

Who needs a hammer?

Oops, now we have to pull it back out and put the glue in .....

Step 7 Diagram
Step 7 Instructions

With the holes drilled and tested for fit, we'll be using Anchoring Adhesive to anchor the bolts in the concrete.

Step 8 Diagram
Step 8 Instructions

Just squirt it in the hole.

Step 9 Diagram
Step 9 Instructions

And put the bolt in.

Step 10 Diagram
Step 10 Instructions

Make sure the bolt is all the way in the hole, at the very bottom. If not, it will settle later on, and you'll have a low point :(

Step 11 Diagram
Step 11

If you've put enough Anchoring Adhesive in, it will squish out the sides. That's a good thing.

Step 12 Diagram
Step 12

Over the bolt, we slip a post anchoring bracket.

Step 13 Diagram
Step 13

Not only is it adjustable up and down - even after installation if for example your sonotubes sink a little - but the brackets give you some play left to right as well.

Step 14 Diagram
Step 14

We cut the beams for the front of the little roofs with the miter saw. Any bigger and we'd be getting the chain saw out.

Step 15 Diagram
Step 15

And bigger holes are drilled in the bottom of the beams. The excess bolt sticking up in the sonotube will be hidden inside this hole. By going a little bigger than the bolt, we are giving ourselves a little wiggle room.<p><br /></p><p><img src="https://lh4.googleusercontent.com/-QFzvahJGKA8/UAWgV8cvjiI/AAAAAAAALLc/…; style="height: 705px; " alt="" /><br /></p><p><br /></p><p>And because these things are always easier done on a flat level surface, not above you head, we go ahead and attach the header to the side beams. &nbsp;We are using really really long screws.</p><p><br /></p><p><img src="https://lh6.googleusercontent.com/-JSwsF07Dykw/UAWgYfSDsBI/AAAAAAAALLs/…; style="height: 705px; " alt="" /><br /></p><p><br /></p><p>We drive the screws into the beams</p><p><br /></p><p><img src="https://lh4.googleusercontent.com/-VtWEcnWFCX8/UAWgXN2ifaI/AAAAAAAALLk/…; style="height: 313px; " alt="" /><br /></p><p><br /></p><p>And one is done!</p><p><br /></p><p><img src="https://lh5.googleusercontent.com/-aSP12XLkpwM/UAWgZ1pkruI/AAAAAAAALL8/…; style="height: 705px; " alt="" /><br /></p><p><br /></p><p>As a whole unit, the beam is brought outside and fit over the bolts and into the brackets.</p><p><br /></p><p><img src="https://lh3.googleusercontent.com/-woyyxBOYQWY/UAWgZvzLGFI/AAAAAAAALL0/…; style="height: 313px; " alt="" /><br /></p><p><br /></p><p>And then the brackets are screwed to the posts.</p><p><br /></p><p><img src="https://lh4.googleusercontent.com/-WeQ6juHw5hA/UAWgagBkvkI/AAAAAAAALME/…; style="height: 705px; " alt="" /><br /></p><p><br /></p><p>Everything is checked for square and adjusted</p><p><br /></p><p><img src="https://lh4.googleusercontent.com/-yUkBgFHv-9o/UAWgcH76HHI/AAAAAAAALMU/…; style="height: 705px; " alt="" /><br /></p><p><br /></p><p>And the bolts are tightened when it's all just right.</p><p><br /></p><p>Now the fun part .... &nbsp;we get to build the roofs!!!! &nbsp;</p><p><br /></p><p>Can't wait!</p><p><br /></p><p><br /></p>

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