Parallel Strand Lumber (PSL)
Parallel Strand Lumber (PSL)
(OP)
How can I find the permissible stresses for parallel strand lumber for specific manufacturers? The Canadian Wood Design Manual lists approximate stresses but also says to check with the specific manufacturer. I am interested in manufacturers in the southern Ontario region (Toronto). A Bing search does not come up with anything on parallel strand lumber.






RE: Parallel Strand Lumber (PSL)
RE: Parallel Strand Lumber (PSL)
Best bet is to probably contact the manufacturer directly. I've searched for this before and I usually end up using the allowable bending moment and shear provided. Weyerhaeuser has these values on their website, I'm sure others do as well.
RE: Parallel Strand Lumber (PSL)
RE: Parallel Strand Lumber (PSL)
woodbywy.com/document/tj-9000/
If you dig on their web site enough or get to right person on the phone, most engineered lumber manufactures will have design guides for their products.
RE: Parallel Strand Lumber (PSL)
LVL is a different story however.
______________
MAP
RE: Parallel Strand Lumber (PSL)
The allowable stresses and mechanical properties of these manufactured wood products are very much dependant upon the wood species a manufacturer uses, their manufacturing process and the adhesives used. So, you have to get their design literature and then spec. a specific product or equal or better. Check your local lumber yards and suppliers to determine availability in your area.