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Joined: Dec 2007
Posts: 1,882
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Derek your words make me chuckle, which is fine with me at this moment. Tim
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Joined: Dec 2007
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Seven Bad Words. His journey is over?
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Joined: Dec 2007
Posts: 1,882
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I think it is helpful to refer to a piece in a frame depending on it's use. I also think it can be important to identify pieces designed to be in compression vs. tension since it can change the joinery (and engineering?). Ties are in tension. If a piece is not in tension, it should not be called a tie. Just to make things controversial, king-posts and queen-posts are designed to be in tension and thus should not be called posts!
Jim So, with Housewrights post I would pose the question once again. If the king post truss had a post or two under it could you now truly call it a king post? With the tie supported the joinery decision for the king to tie joint would be a simple 2" or 3" tenon. If unsupported and a true truss the king would become a king piece and require a strong tying joint. I am seeing how this quote thing works. Here goes. Tim
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Joined: Feb 2006
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Hi Tim;
I think you are referring to the post between the tie and rafter and not the added post(s) below the tie. I would say yes to your scenario. However, with posts under the tie the truss is no longer a truss and the king post would likely be unnecessary. My point was that I think it is good to identify tension members by name to avoid engineering errors by vernacular engineers(?). The name king post has been used for hundreds of years so I would not presume to try to get everyone to change the name. Let's just make sure new framers understand the forces occuring in collar ties, king posts and queen posts.
I see lots of words in the forum which are not in the encyclopedia yet. I hope more people get involved and enter words like cheek, soulace brace, scups, "setback tenon" or "boxing the tenon", and peeking mortise. I used to call the short, cut-off pieces of pegs "peglets"!
Jim
The closer you look the more you see.
"Heavy timber framing is not a lost art" Fred Hodgson, 1909
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Joined: Dec 2007
Posts: 1,882
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Peglets, that sounds appropriate and adoptable. Peglets can be dangerous under foot.
I am sawing the stock for a 4 bent king post truss, just the 42' top plates left. The first bent is a true truss as well as the next two. The fourth is the gable end and I don't plan on changing the rafter peak joinery by omitting the king and turning the rafter joint into a tongue and fork, I will keep the pieces all the same and redundant. It will be boarded with vertical boards so there will be a girt in the fourth bent as a nailer, which will be interrupted by a center post. This changes the kings joinery at that bent to a simple tenon at its foot, and leaving the king as a true king post. All the other kings will have wedged half dovetails. Tim
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