Video: Yuav ntev npaum li cas 2 x 4 span?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Txoj cai ntawm tus ntiv tes xoo yog 2 x 4 x 6', 2 x 6 = 8'. Leej twg? Siv 2x8's lossis tsis thab tsim nws, vim nws yuav sag. Nrog 20 phaus tuag load, max span rau 2x4 yog 5ft.
Khaws qhov no hauv kev xav, dab tsi yog qhov siab tshaj plaws rau 2x4 joist?
Nyob rau hauv dav dav, joists spaced 16 nti ntawm qhov chaw tuaj yeem ncua 1.5 npaug ntawm taw lawv qhov tob hauv ntiv tes. A 2 x 8 mus rau 12 ko taw; 2 x 10 mus rau 15 ko taw thiab 2 x 12 mus rau 18 ko taw.
Qhov thib ob, nyob deb npaum li cas tuaj yeem ncav cuag 4x6 yam tsis muaj kev txhawb nqa? Obviously, qhov loj ntawm lub nqaj, qhov loj dua nyob deb nws tau span nruab nrab ntawm cov ntawv. Ib Redwood 4x6 ib beam yuav tsum ncua tsis ntau tshaj 6' nruab nrab txhawb nqa ncej.
Qhov thib ob, puas tuaj yeem 2x4 ncua 12 ko taw?
Yog lawm 12 ft ib . yog ntev rau ib 2x4 ua.
Cov ntoo loj npaum li cas tuaj yeem ncav cuag 20 ko taw?
Max. Nyob Load 60 lbs/ft2 (2873 N/m2)
| Qhov siab tshaj plaws (ft-in) | ||
|---|---|---|
| Nominal Loj (inch) | Joist Spacing Center rau Center (inch) | Qib Qib |
| 2 x12 | 24 | 13' - 2" |
| 2 x14 | 12 | 20' - 10" |
| 16 | 18' - 0" | |
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