The only joist for residential houses I know is solid wood joist. It
seems now some new homes use rim board I-joist. How good are they? Are
they as strong as solid wood?
Some houses even uses wood floor trusses, similar to those shown in
http://www.sramsco.com/products.html . Are houses constructed this way
even safe to inhabit? I don't think I want to live in a house that uses
wood floor trusses.
The structural I beams whether they are made of 2X3's and wafer board or 2X3's
in a truss pattern are way stronger then conventional lumber. They are also
perfectly straight making for nice level flat floors. Don't hesitate to use
them if you can afford them. They are a little more money.
Now hold on there...
This engineered lumber is LESS, not more expensive at my local lumberyard.
Especially the particle/flake board I joists. (Unless purchased under the brand
name "quiet floors")
Up until this Jan 1 it was all illegal to use here, as the town cosiders it a
fire hazard, meaning that in the event of a fire, the house will collapse LONG
before a home built the same way with true dimensional lumber. Now, If you used
it to build your home there must be a warning sticker on your front door.
And those roof trusses are great, but one small problem - they're usually used
in, or to make one of those beautiful walk-in attics, which then become
impossible to walk in or utilize to it's full potential.
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