Kev tsim kho tsis tshua muaj tuaj yeem ua yam tsis siv cov ntoo ntoo. Lub lumber no tau pom ib daim ntawv thov dav dav hauv kev tsim nkoj, kev tsim vaj tsev ntoo thiab kho kom zoo nkauj sab hauv. Cov khoom no yog ib lub log, txiav rau txhua sab, muaj ib lub voj voog lossis square seem thiab ua los ntawm cov ntoo coniferous (xws li ntoo thuv, spruce, fir, larch).
Kev faib tawm
Nyob ntawm qhov ua tau zoo, cov ntoo ntoo tau muab faib ua qib thib ib thiab qib thib ob:
- Thawj yog kho ntoo uas tsis muaj stains thiab pob qhov rooj.
- qib 2 - ib yam khoom uas muaj qee yam tsis xws luag.
Tsis tas li, cov ntoo ntoo tuaj yeem ua kom qhuav lossis av noo. Cov khoom qhuav yog suav tias yog xav tau ntau dua, vim nws txo qis qis ntawm cov tsev tiav. Tsis tas li ntawd, cov khoom no yog lub teeb, siv tau yooj yim thiab thauj, thiab tsis tshua muaj kev tsim cov fungi thiab lwj.
Edged ntoo tuaj yeem ua ntau txoj hauv kev:
- Calibrated - kom qhuav thiab ua tiav.
- Ob-edged - ua tiav longitudinally los ntawm ob sab.
- Peb-ntug - muaj peblongitudinally machined nto.
- Plaub-ntug - ua tiav los ntawm tag nrho 4 sab ntev.
Qhov peb-edged version yog suav tias yog qhov nrov tshaj plaws, vim nws tso cai rau koj los tsim cov vaj tsev zoo nkauj nrog lub ntsej muag uas yooj yim rau kev kho kom zoo nkauj. Cov tsev ua los ntawm cov ntoo zoo li cov cav ntoo los ntawm sab nraud, thiab cov phab ntsa sab hauv yog du, haum rau txhua hom kev kho kom zoo nkauj.
txiav ntoo: qhov ntev
Qhov luaj li cas ntawm cov kab npoo tuaj yeem ua raws li hauv qab no:
- thickness - los ntawm 25 mus rau 200 hli;
- length - 3-6 m;
- dav li ntawm 50mm txog 250mm.
Raws li GOST, qhov dav thiab tuab ntawm cov kab npoo npoo yuav tsum yog tsawg kawg 100 hli. Txhua yam thinner hu ua bar.
Daim ntawv thov
Beam - hom ntoo uas muaj ntau tshaj plaws, uas muaj ntau yam kev siv. Nws yog siv los ua cov khoom siv hauv ntau yam ntoo. Nrog nws cov kev pab, pem teb kab teeb, phab ntsa, ntau yam vov tsev, thiab lwm yam. Tsis tas li ntawd, cov ntoo no tau pom ib daim ntawv thov dav dav hauv kev lag luam rooj tog thiab hauv kev tsim cov khoom siv.
Nyob rau xyoo tas los no, cov ntoo ntoo tau txais kev nyiam tshwj xeeb hauv kev tsim vaj tsev ntoo. Vim nws cov phooj ywg ib puag ncig thiab kev tsim khoom, nws yog qhov xav tau zoo hauv kev tsim kho cov phab ntsa ntawm cov tsev, cov plag tsev, thiab lwm yam.
