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webdawg

01:43PM | 05/16/04
Member Since: 05/02/04
2 lifetime posts
Bvtools
Is it better to use a 32ft I-Joist or two 16 footers? All will be supported every eight feet by post and beam.

I guess what I am asking is will a 32 footer be harder to install due to flexing where a 16 footer will be more rigid?

Go Browns!

Piffin

04:30PM | 05/16/04
Member Since: 11/06/02
1284 lifetime posts
Engineered lumber is not and should not be sold without an engineering plan which is very specific as to how it is installed and used.

One potential drawback with continuous lengths is that you can experience increased vibrations. Jump on the floor at one end, and the floor at the other end responds. some manufacturers have ways of adressing thios, parting the lengths is one of them. Any repuatable retailer of engineeered lumber will be able to chech your pl,ans and certify the design for you before ordering.

Excellence is its own reward!


treebeard

02:22AM | 05/17/04
Member Since: 01/14/03
265 lifetime posts
Generally, no matter what kind of lumber used in a project, engineered or not, shorter is easier to handle. Unless there's a specific engineered or physical requirement in the plans for lengths over 20' (like rafters), using 20' and under usually keeps handling as a 2-man project at the most.
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