Posted 7/22/ 09:32 (# - in reply to #)
Subject: Re: Strap Er down!
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If you're not strapped down, and a bale falls off causing a wreck and someone dies, you might check with your insurance company to see how much they are going to pay and how much you'll be liable for the rest of your life supporting the deceased family after their good lawyer gets done with you. Just sayin. I never used to hook the safety chains on my gooseneck til a lawyer told me that I would be liable in a wreck if my trailer wasn't hooked up properly. I never checked to see if he was right, just figured better safe than sorry.Here are some straw bale questions answered!
Q1. How much force is required to tie the bales tight (my elbows are killing me)?
A: The knot that I use, the Miller&#;s Knot (although I have been told that the name might be incorrect) is so strong that it is possible to tie the bales tighter than the original baling machine. This requires a strong twine as well as the standard twine often snaps under the added pressure of this knot. Super blue twine works very well. In general, I try to tie the bales as tight as I can. This usually means that when I am done, the old knots are slightly loose and the new twine is very tight to the bales. In terms of foot-pounds, I have no idea. IN terms of elbow pain, I would suggest a little less than what causes pain!
Q2. How to handle situations where you are only 3 to 4&#; short and too small for a bale. How to stuff, how to lock the bales from moving and the use of tar paper under the bales and strapping.
A: Hey, that&#;s cheating! That&#;s at least three questions disguised as one &#; a) If I end up short by only a few inches, I always push my full or half bale into the corner and stuff with loose flakes back to the rest of the wall run. Never use loose material at the end of a wall. If it is more than a few inches, tie the flakes into mini bales before you install them. This technique will cover the installation, and &#;locking&#; of the bales. b) Roofing felt is used under the bales to stop moisture from wicking up into the wall. I cut a roll of roofing felt to size on a chop saw and then roll it into the space between the toe ups. Cutting ahead of time speeds the process considerably. c) The strapping I use is made by Cordstrap and you can find it with a Google search. I use 3.4&#; strapping and tighten it enough to compress the bales by at least 1-2&#; over the entire height of the wall. The tighter the better, but be careful not to bust the box beams or pull them out of level. It is really important that the box beams be level because you will pay the price during roof framing if they are not.
Q3. How to place the strapping in the corners where bales overlap. How to lock the corners of the top plate and how to compress the bales with the straps&#; i.e., over tar paper, under tar paper, over top plate, under top plate.
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A: The strapping should be placed over the box beams and under the toe ups. I place my strapping every 2&#; on center paying attention to the location of windows and doors so I don&#;t end up with a strap running in a window location. Start close to the corners, but do not try and lap in the corners as it will not work. That is what the rebar staples are for: tying the corners together. I run the roofing felt over the straps.
Q4. Types of top plates, ladder style, plywood sheathed style, cross members, and whether to use 2×4 &#;s or 2×6&#;s.
A: I use 2×4 ladder construction 24&#; on center with plywood tops and bottoms. Be sure to insulate the boxes before you close them up. I leave the top open until they are all nailed together and connected and then lap the plywood from one section onto the next as a final connection point. I use additional 2×4&#;s in the ladder to make the corner connections.
Q5. What do you do around windows when they are framed and not on bucks? How close to come with bales, how much loose straw to fill.
A: If the windows are installed in a framed wall, not a load bearing wall, I place the frame flush with the outside of the structure so the bales end up flush with the window. This does not achieve the adobe look of inset windows, but I judge it better protects the bales from water damage over time. I stay back about 2 &#; 6&#; from the window edge and stuff with loose straw during the meshing stage. Exactly how the corners look after stuffing is up to you and that determines how much straw you use. It is important the get the stuffed areas tight for proper fire protection and plaster backing.
Q6. What to do with the roof members in terms of stuffing with straw and cutting notches in the roof joists, etc?
A: Do not place the straw up around the roof members. Place a strip of plywood against the rafters so that the bales stop at the base of the rafters. Ceiling insulation should be lightweight and not bales. It is also a requirement to provide ventilation from the eaves which means a clear path of air must be able to travel from the eaves above the bales to the roof ridge. Straw in this area will hinder the ventilation and potentially cause moisture damage. In load bearing, this is not an issue because the box beam acts as the stop for the bales and the roof is framed up from there.
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