Video: Kuv yuav ua li cas paub qhov loj me LVL nqaj kuv xav tau?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
- Ntsuas koj qhov kev ncua sij hawm tag nrho ntawm cov tswv cuab thiab xyuas kom meej tias nws tsis siab tshaj 60 ko taw.
- Tsim ib nqaj dav raws li qhov tseeb tias qhov dav dav ntawm ib qho LVL kab yog 1 3/4 nti.
- Tsim ib nqaj qhov tob raws li txoj cai ntawm tus ntiv tes xoo rau kwv yees qhov tob ntawm kev tsim khoom kab teeb uas yog faib lub span los ntawm 20.
Dhau li, cov ntoo loj npaum li cas tuaj yeem hla 20 ko taw?
Max. Nyob Load 60 lbs/ft2 (2873 N/m2)
| Qhov siab tshaj plaws (ft - hauv) | ||
|---|---|---|
| Nominal Loj (nti) | Joist Spacing Center rau Center (inch) | Ntoo Qib |
| 2x12 ua | 24 | 13' - 2" |
| 2 x14 | 12 | 20' - 10" |
| 16 | 18' - 0" | |
Ib yam nkaus, nyob deb npaum li cas lub nqaj nqaj tsis muaj kev txhawb nqa? Thaum txhawb nqa joists uas ncua 12 ko taw tsis muaj overhang dhau ntawm kab teeb, ob chav ply beam tuaj yeem hla mus ko taw tus nqi sib npaug rau nws qhov tob hauv inches. Ob chav 2x12 beam tuaj yeem ncav cuag 12 ko taw ; a (2) 2x10 tau span 10 ko taw thiab lwm yam.
Ntawm no, muaj zog npaum li cas yog LVL ntau dua ntoo?
LVL muaj "qhov siab tshaj tso cai khoov siab" ntawm 2, 800 lossis 3, 000 psi. Thiab raws li qhov no, feem ntau ntoo muaj qhov siab tshaj plaws dabtsi yog khoov ntawm ib nrab ntawm qhov ntawd. Yog li, yog. LVLs yuav hnyav dua tshaj tib qhov loj me ntoo nqaj.
Dab tsi loj beam kuv yuav tsum tau ncua 14 ko taw?
Cov qhov loj ntawm nqaj yuav txawv nyob ntawm cov ntoo uas koj siv, tab sis kuv yuav xav tias Douglas Fir txij li qhov tshwm sim hauv kuv cheeb tsam. Raws li cov kab kos kuv muaj, koj yuav xav tau ua 6x12 nqaj ntawm txhua sab los txhawb nqa 7680 phaus tshaj a 14 ' ncua (xav tias koj xav tsawg dua 1/360 deflection).
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