Video: Puas yog 4x6 muaj zog dua 2 2x6?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
A 4x6 ib joist yog theoretically muaj zog dua ib ob 2x6 ua vim txoj kev hlub 1/ 2 thicker, tab sis lub zog tiag tiag nyob ntawm cov pob qij txha thiab lwm yam tsis muaj zog ntawm ib qho ntawm cov ntoo (# 2 lumber tuaj yeem muaj qee qhov tsis zoo spike knots lossis loj tsis-li-nruj puag ncig knots lossis wane).
Raws li, nyob deb npaum li cas koj tuaj yeem ncav cuag ob npaug 2x6?
| Joist Spans | ||
|---|---|---|
| Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir, Redwood, Cedars, Ponderosa Pine, Pine liab | 3X6 LUB 2-2X6 | 5'-2" |
| 3X8 LUB 2-2X8 | 6'-7" | |
| 3 X 10 OR 2-2 X 10 | 8'-1" | |
| 3X12 LUB 2-2X12 | 9'-5" | |
Tom qab ntawd, lo lus nug yog, ob 2x6 muaj zog dua li 2x8? Nyob rau hauv bending, ib tug joist tsim ua 2x6 (qhov tseeb qhov ntev 1.5 nti x 5.5 nti) me ntsis muaj zog dua ib leeg 2 x8x qhov tseeb qhov ntev 1.5 nti los ntawm 7.25 nti.
Ua kom pom qhov no, dab tsi yog qhov muaj zog 4x4 lossis 2x6?
Ib leeg 2x6 ua yog 68% muaj zog dua tshaj li 4x 4 x rau ntsug loads raws li koj piav qhia. Txawm li cas los xij, kuv ceeb toom rau koj tias nws yuav yog ib lub tswv yim zoo kom muaj ib tus neeg tsim cov kab no kom zoo thiaj li ua tiav txoj haujlwm. Yog tias koj txaus siab kom muaj 4 dav beam, vim li cas ho tsis tsim ob 2x6 ua beam, qhov no yuav yog 237% muaj zog dua !
Qhov hnyav npaum li cas yuav txhawb nqa 4x6?
txog 105 lbs.
Pom zoo:
Koj yuav txiav txim siab li cas yog tias cov kua qaub muaj zog lossis tsis muaj zog?
Yog hais tias ib qho acid tsis tau teev tseg ntawm no, nws yog ib qho tsis muaj zog acid. Nws tuaj yeem yog 1% ionized lossis 99% ionized, tab sis nws tseem raug cais raws li cov kua qaub tsis muaj zog. Txhua cov kua qaub uas dissociates 100% rau hauv ions yog hu ua ib tug muaj zog acid. Yog hais tias nws tsis dissociate 100%, nws yog ib tug qaug zog acid
Txoj cai twg yog txhawm rau muab lub zog saib xyuas muaj zog ntxiv dag zog rau kev ua txhaum cai lij choj tiv thaiv kev ua phem thiab tiv thaiv kev lag luam nyiaj txiag?
COV PHOOJ YWG ACT TEEV NTUJ TEEB MEEM NTAWM TXOJ CAI TXOJ CAI TSHIAB
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Puas yog hnub ci zog tauj dua tshiab lossis tsis rov ua dua tshiab?
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