Qhov hnyav ntawm ntoo tsis txawv nyob ntawm ntau hom ntoo, tab sis noo noo kuj ua lub luag haujlwm tseem ceeb heev.
Cov ntoo txiav tshiab hnyav hnyav dua li cov ntoo qhuav vim muaj cov dej noo ntau dua.
| Hloov ntoo | Botanical name | Nyob tshiab raug ntaus (kg/m³) | Weight cua qhuav (kg/m³) |
|---|---|---|---|
| Maple | Acer spp. | 800 | 670 |
| Birch | Betula spp. | 710 | 670 |
| Beech | faus spp. | 890 | 690 |
| Oak | Quercus spp. | 1100 | 750 |
| Spruce | Picea spp. | 700 | 450 |
| Pine | Pinus spp. | 770 | 510 |
| Larch | Larix spp. | 760 | 590 |
| Linde | Tilia spp. | 640 | 510 |
| Mahogany | Swietenia spp. | 950 | 850 |
| Walnut | Juglans spp. | 800 | 660 |
| Poblar | Populus spp. | 420 | 400 |
| Robinia (acacia) | Robinia pseudoacacia | 1100 | 850 |
| Fir ntoo | Abies spp. | 660 | 430 |
| Teak | Tectona grandis | 900 | 670 |
| Walnut | Juglans spp. | 800 | 660 |
| Cedar | Cedrus spp. | 490 | 370 |
Vim li cas ntoo hnyav thiaj tseem ceeb?
Qhov hnyav ntawm hom ntoo ua lub luag haujlwm tseem ceeb rau ntau yam laj thawj:
Kev tsim kho thiab thauj khoom muaj peev xwm
Qhov hnyav ntawm ntoo yog qhov tseem ceeb thaum xaiv ntoo rau ntau yam kev tsim kho. Raws li txoj cai, cov ntoo hnyav dua, qhov siab dua nws qhov ntom thiab lub zog. Cov ntoo hnyav dua feem ntau muaj peev xwm thauj khoom ntau dua thiab yog li tsim nyog rau cov khoom siv thauj khoom xws li kab teeb, kab thiab kab teeb.
Stability thiab deformation
Qhov hnyav ntawm ntoo nyob ntawm nws cov dej noo. Cov ntoo denser, qhov dej tsawg nws tuaj yeem nqus tau lossis tso tawm. Cov ntoo hnyav dua yog qhov tsawg dua rau shrinkage thiab warping thiab yog li ruaj khov rau qee yam kev siv.
Kev Ua Haujlwm thiab Kev Ua Haujlwm
Qhov hnyav ntawm cov ntoo kuj cuam tshuam rau kev tuav thiab ua haujlwm thaum lub sijhawm tsim kho thiab kev teeb tsa. Cov ntoo hnyav dua yuav nyuaj rau kev thauj thiab tuav, yuav xav tau cov cuab yeej muaj zog thiab lub sijhawm sib dhos ntev dua.
Aesthetics thiab npaj siv
Qhov hnyav ntawm ntoo kuj tuaj yeem cuam tshuam rau nws cov khoom zoo nkauj. Cov ntoo hnyav dua tuaj yeem muaj kev ntxhib los mos, xim, lossis cov nplej uas ua rau nws haum rau cov kev xav zoo nkauj tshwj xeeb.
Kev siv ntoo thiab kev ruaj khov
Qhov hnyav ntawm ib hom ntoo kuj cuam tshuam rau kev siv ntoo ntawm ib qhov project. Cov hom ntoo sib dua tuaj yeem ua tau zoo dua rau qee yam kev siv thiab yog li xav tau cov khoom siv ntoo tsawg dua. Xaiv cov ntoo zoo tuaj yeem ua rau muaj kev ruaj ntseg ntawm qhov project.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov hnyav yuav tsum tsis yog tib qho kev ntsuas thaum xaiv hom ntoo. Lwm yam xws li cov khoom muaj zog, durability, muaj, nqi thiab zoo nkauj yuav tsum tau txiav txim siab los nrhiav hom ntoo zoo tshaj plaws rau ib qhov project.
