LVL Beam yog dab tsi?

Thaum xav txog cov khoom siv, laminated veneer lumber, feem ntau hu ua LVL, yog ib qho ntawm cov kev xaiv dav dav.

Laminated veneer lumber (LVL) yog ib qho ntawm cov khoom siv ntoo uas siv ntau tshaj plaws rau kev tsim kho. Nws yog cov khoom sib xyaw tsim los ntawm ntau txheej txheej nyias ntawm veneer uas tau ua raws li qhov ntev ntawm cov ntoo tiav.

Hauv essence,Laminated Veneer Lumber(LVL) yog ib qho khoom siv ntoo uas tsim los ntawm ntau txheej ntawm cov ntoo nyias nyias ua ke nrog cov nplaum. Thaum LVL pom cov ntawv thov hauv ntau yam kev tsim kho xws li headers, rimboards, thiab ru tsev, nws yog qhov tshwj xeeb tshaj yog nyob rau hauv kev tsim kho kab.

LVL kabbelongs rau qeb ntawm structural composite lumber (SCL), ib tsev neeg ntawm cov ntaub ntawv tsim los ntawm txheej txheej thiab bonding nplooj ntawm veneers. Lwm cov tswv cuab ntawm tsev neeg no suav nrog laminated strand lumber (LSL) thiab parallel strand lumber (PSL). Txawm li cas los xij, dab tsi ua rau LVL sib nrug ntawm nws cov neeg sib tw? Wb delve rau hauv intricacies ntawm LVL beam:

 

Yuav ua li cas LVL Beam ua

Production ntawm ibLVL ntoo beampib nyob rau hauv lub log yard, tom qab txiav cov ntoo mus rau qhov yuav tsum tau qhov ntev. Tom qab ntawd, cov txheej txheem rotary peeling yog ua haujlwm los tshem tawm cov txheej nyias ntawm cov tawv ntoo. Feem ntau, cov txheej no ntsuas ntawm 2.5 hli mus rau 4.8 hli nyob rau hauv tuab, nrog rau qhov nruab nrab ntawm 3.2 hli.

Lub siab bar exerts ib tug tswj tus nqi ntawm lub siab nyob rau saum npoo thaum lub riam, teem rau ntawm ib tug tshwj xeeb bevel kaum sab xis nyob ntawm seb hom ntoo, hlais ib daim ntawv los ntawm lub cav rotating. Lub siab bar ua kom cov ntawv tuav cov tuab tuab, tiv thaiv kev tawg thaum lub sijhawm veneer-txiav.

Lub resulting veneer undergoes ib txoj kev ziab kom tshem tawm cov dej noo ntau dhau, ua raws li kev muab qhab nia thiab trimming, ua ntej sib sau ua ke. Txhawm rau tsim LVL beam, ib qho nplaum, xws li phenol formaldehyde, yog siv rau txhua daim ntawv raws li lawv tau teem tseg. Tom qab ntawd, lawv raug nias ntawm qhov kub ntawm 250 txog 450 degrees Fahrenheit.

Dab tsi yog Qhov Zoo ntawm LVL Beam

IbLVL ntoomuaj ntau qhov zoo, ua rau nws muaj koob meej raws li cov khoom siv siv ntau yam.

Ua ntej, nws qhov kev ua tau zoo tso cai rau ntau yam kev siv, los ntawm kev tsim cov headers thiab I-joists los tsim lub tsheb txaj decking, txoj kev kos npe, thiab txawm skateboards.

Lwm qhov txiaj ntsig tseem ceeb nyob hauv nws qhov loj. Raws li cov txheej txheem tsim khoom yuav tsum nias ntau txheej txheej ntawm veneer ua ke, qhov loj me tsis txwv los ntawm qhov ntev ntawm lub cav. LVL ntau lawm muab kev tswj zoo dua ntawm ntau yam, suav nrog thickness, dav, ntev, thiab noo noo cov ntsiab lus.

Ntxiv mus, LVL nyob rau hauv cov muaj zog tshajengineered-ntoo khoom, ua rau nws resilient tiv thaiv rog zoo li cua thiab hnyav loads. Txhua txheej ua tiav cov kev kuaj xyuas zoo, ua kom cov khoom sib txuas ua ke kawg thiab ua kom muaj kev tswj xyuas zoo dua ntawm tag nrho cov khoom zoo.

Hais txog tus nqi-zoo, LVL feem ntau ua pov thawj kev lag luam ntau dua li lwm yam xws li sawn ntoo.

Dab tsi yog qhov tsis zoo ntawm LVL Beam

Vim nws cov khoom tsim los ntawm ntau txheej txheej ntawm veneer, LVL tuaj yeem muaj qee yam tsis xws luag xws li warping, delamination, yog li nws yuav tsum tau siv tshuab ntau lawm thiab kev ua haujlwm zoo kom muaj qhov ruaj khov LVL.

Cov txheej txheem ntau lawm kuj xav tau kev nqis peev tseem ceeb ua ntej, ua tsaug rau qhov kev xav tau ntawm cov cuab yeej tsim khoom siab tshaj plaws thiab cov kws tshaj lij thiab cov kws tshaj lij.

Hom Ntoo Siv rau LVL Beams

LVL beams paub txog lawv qhov kev ua tau zoo, thiab qhov ntawd mus rau cov ntaub ntawv uas lawv tau tsim, thiab. Ntau hom tuaj yeem siv los tsim LVL kab teeb, tab sis qee qhov nrov tshaj plaws yog:

- Douglas-fir

- Pine

- Spruce

- Poplar

- Acacia

- Eucalyptus

- Roj hmab

Xaus: Xaiv LVL rau qhov ua tau zoo tshaj plaws

Hauv kev xaus, LVL kab teeb tau tshwm sim los ua qhov kev xaiv zoo tshaj plaws hauv kev tsim kho niaj hnub, muab kev sib xyaw ntawm ntau yam, kev tsim khoom, lub zog, thiab kev ua haujlwm zoo. Lawv cov kev siv dav dav, ua ke nrog lub peev xwm los txiav qhov ntev kom meej, ua rau LVL kab teeb pom kev zoo rau cov kws tsim vaj tsev, cov neeg tsim khoom, thiab cov chaw tsim khoom sib xws.