▁l umber . ▁L V L ▁is ▁a ▁member ▁of ▁the ▁struct ural ▁composite ▁l umber ▁( S CL ) ▁family ▁of ▁engine ered ▁wood ▁products ▁that ▁are ▁commonly ▁used ▁in ▁the ▁same ▁struct ural ▁applications ▁as ▁conventional ▁sa wn ▁l umber ▁and ▁tim ber , ▁including ▁ra fter s , ▁headers , ▁be ams , ▁jo ists , ▁rim ▁bo ards , ▁stud s ▁and ▁columns . ▁ ▁Cross ▁l amin ated ▁Cross - lam in ated ▁tim ber ▁( C LT ) ▁is ▁a ▁vers atile ▁multi - layer ed ▁panel ▁made ▁of ▁l umber . ▁Each ▁layer ▁of ▁bo ards ▁is ▁placed ▁cross - wise ▁to ▁adjacent ▁layers ▁for ▁increased ▁rig id ity ▁and ▁strength . ▁C LT ▁can ▁be ▁used ▁for ▁long ▁sp ans ▁and ▁all ▁assemb lies , ▁e . g . ▁flo ors , ▁walls ▁or ▁roof s . ▁ ▁C LT ▁has ▁the ▁advantage ▁of ▁faster ▁construction ▁times ▁as ▁the ▁pan els ▁are ▁manufact ured ▁and ▁finished ▁off ▁site ▁and ▁supplied ▁ready ▁to ▁fit ▁and ▁sc rew ▁together ▁as ▁a ▁flat ▁pack ▁assembly ▁project . ▁ ▁Par allel ▁str and ▁Par allel ▁str and ▁l umber ▁( PS L ) ▁consists ▁of ▁long ▁v ene er ▁str ands ▁laid ▁in ▁parallel ▁formation ▁and ▁bond ed ▁together ▁with ▁an ▁ad hes ive ▁to ▁form ▁the ▁finished ▁struct ural ▁section . ▁A ▁strong , ▁consistent ▁material , ▁it ▁has ▁a ▁high ▁load ▁carrying ▁ability ▁and ▁is ▁resist ant ▁to ▁season ing ▁str esses ▁so ▁it ▁is ▁well ▁su