engineered lumber

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  #1  
Old 01-26-05, 12:04 AM
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engineered lumber

I have seen information on I joist but have never seen them used in a home anyone here ever work with them? How are they compared to the price of regular lumber 20% more or higher? I take it they are expensive since I haven't seen them in any houses that are priced for the average joe.
 
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Old 01-26-05, 09:43 PM
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Engineered I Joists

Engineered lumber is typically cheaper than dimensional lumber since they can span longer distances unsupported and can bear more load by being placed at greater distances on center.

Engineered floor joist are very common in modern construction and are not limited to floor joists. They can be found in rafters and studs as well.
 
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Old 01-29-05, 08:11 PM
davekaplan
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I've got a doubled 30' 14 x 1-3/4 glulam up for a midspan recently. Never used it before. I like it and I think it beats nailing and gluing the crap out of a bunch of 2 x whatevers. Here's a picture of it going up:
http://www.thekyostudio.com/francisco/beam_03.html

Here some propaganda:
http://www.apawood.org/glu_level_b.c...t=prd_glu_main
http://www.lpcorp.com/products/produ...ductGroupID=13

dave
 
  #4  
Old 02-02-05, 02:49 PM
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on a cost per square foot basis, TJI's will almost always cost more than dimensional lumber. the rare case where they might be cheaper is in the 20-24 ish foot span region. In that range dimension lumber isnt adequate to clear span, and the cost of a steel beam line with foundations at midspan is high due to the small amount of floor area to spread the cost over.

within the last few years TJI has come out with "economical" joists which i think are labeled as TJI-120's and 140's. these are meant to compete with dimensional lumber.
 
  #5  
Old 02-03-05, 01:34 PM
jmazur
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i just replaced my ceiling joists with them.

i live out on eastern long island (ny) and they cost me approximately $70 for each 22' x 11 7/8 TJI-360.

just my 2
 
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