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cross laminated timber

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cross laminated timber
CROSS LAMINATED TIMBER
INTRODUCTION AND CASE STUDIES

A BRIEF REPORT ON

CROSS LAMINATED TIMBER
A.A.2013-­2014
TIMBER, MEMBRANE AND GLASS STRUCTURES
PROFESSOR|NOVATI GIORGIO
COLLABORATORS| SUN MEIFENG797267
GUO ZHICHUAN|798790
CHU QIFENG|803896
HU YALIN|797868

!

!

!
CROSS! LAMINATED! TIMBER!

CLT!is!composed!of!solid!wood!laminations!of!
0.6! to! 2.0! inches! thick! and! are! adhesively! bonded! to! create! a! crossNlaminated! product,! similar!to!plywood.!The!strength!of!the!wood! laminations! is! distributed! across! both! panel! directions,! rather! than! a! single! direction! as! in! solidNsawn!lumber.! CLT! panels! can! be! produced! in! thicknesses! from! 4.5! up! to! 20! inches! (APA! 2012).! The! maximum!commercial!panel!dimensions!are!10! feet! wide! and!! 50! feet! long! and! traditionally!

1. Introduction!

use!spruce!lumber!(FPInnovations!2011).!

!
What!is!CLT?!
Cross! Laminated! Timber! (CLT)! is! made! from! layers! of! dimension! lumber,! each! stacked! at! right! angles! to! the! adjacent! layers! and! glued! to! form! a! solid! panel.! By! varying! the! number! of! layers!as! well! as! the! lumber! species,! grade! and! thickness,! CLT! panels! can! be! used! in!

!
!
! Other!basic!Information:!

almost! any! assembly! type,! including! walls,!

•!name:!CLT/!XNLAM/!Cross!Lam!

floors,! roofs,! elevator! shafts! and! stairways.!

•!material/fiber:!SNPNF/Black!Spruce! !

Lumber!is!kiln!dried!prior!to!lamination,!which!

•!harvesting!cycle:!80!to!100!years!

adds!to!the!dimensional!stability!of!the!panels.! !

•!adhesive:!Polyurethane!

CLT!has!been!manufactured!in!Europe!for!over! a! decade.! CLT! is! a! revolutionary! building! system! that! substitute! for! concrete,! masonry!

•!adhesive!amount:!4%!by!weight!
•! floor,! roof! and! wall! with! joints! detailed! for! lateral!loads! and!steel!in!some!applications.!

Illustrations!of!CLT!Illustrations!of!CLT!construction!in!Europe!(courtesy!of!KLH!Massivholz!GmbH,!www.klh.at.)in!Europe!
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