We spent the morning by picking up our beam for our front living room window. Then we headed to work. The weather was acceptable, no sun with some minor showers. Not as big deal. We built the second section of our round wall, this time with a new technique to figure out the lengths, etc. The angles involved are too complex to even begin to imagine. The roof slopes at a 45 degree angle against all the inside walls. Some of the outside walls as you can see are curved, so thats another factor to consider. The simplest way (i've finally discovered) is to simply use the plumb line to figure out where the board should be located on the ceiling. We place the round bottom piece of the wall in place and attach it with ramset nails (bolts will come later). Then we use a plumb line and discover where it would be if it was on the ceiling. We clamp it to the ceiling TJI joists, then its easier to figure out how long (tall) our 2x6 stud wall should be. The top of the 2x6 studs need to be cut at a 2.5 degree angel. Technically they would need another angel as well, but we use a hand plane to file away what we don't need on the outside edge.
Suffice it to say, I doubt many people on this island have ever seen stud walls like this before.
Brought home some 2x12 lumber and our special big beam for our front window. This is a glu-lam beam which weighs about 60kg (left side beam in pic). Its a 5 1/2 inch by 9 1/2 in height.
Finding out where the top is compared to the floor exactly. Done using a plumb / weighted measuring tool. Good old gravity does the work for us.
Working with the second section of the wall.
Our new (left side) wall section is more accurate then our previous attempt. We solved it by cutting away at the top of the 2x6 posts to lower it and correct the slope. This could be done in place using a reciprocating saw.
Extending our beam temporally to see where the TJI beams fall.
Finally, we were able to align the two walls properly after using our new technique.
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