Video: Nyob deb npaum li cas koj qhov chaw pergola rafters?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Cov cov rafters choj hla lub girders ntawm 90 degrees. Qhov sib txawv ntawm qhov rafters yuav sib txawv raws li koj qhov pom kev nyiam thiab qhov loj ntawm qhov pergola . Sib nrug ntawm cov rafters 16 mus rau 20 nti sib nrug muaj ntau. Txoj cai tseem ceeb tshaj plaws nyob rau hauv qhov sib nrug yog khaws cov nyob deb zoo ib yam nruab nrab txhua tus cov rafters.
Xav txog qhov no, yuav ua li cas deb ntawm 2x6 Rafter ncua?
Lub rooj hais tias 2 X 6 cov rafters spaced 16 nti ntawm qhov chaw (o.c) tuaj yeem ncua qhov siab tshaj plaws nyob deb ua 13ft5.
Tsis tas li ntawd, qhov loj npaum li cas rafters kuv yuav tsum tau ncua 20 ko taw? Max. Nyob Load 20 lbs/ft2 (956 N/m2)
| Qhov siab tshaj plaws (ft - hauv) | ||
|---|---|---|
| Nominal Loj (nti) | Rafter Spacing, Center rau Center (nti) | Ntoo Qib |
| 2 x10 | 12 | 27' - 6'' |
| 16 | 25' | |
| 24 | 20' - 9'' | |
Kuj tseem paub yog, nyob deb npaum li cas tuaj yeem ua 2x10 ncua rau pergola?
A 4x4 ua ua kom lub hauv caug zoo thaum siv 6x6 posts. Ib yam thiab 2 x 10 can span 13'9 thaum siv los ua lub lawj joist yog li kuv tsis paub meej vim li cas nws thiaj li tsis yooj yim nqa 14 ko taw ntawm ib qho pergola uas yog yuav ib nrab 75 feem pua tsawg dua load rau nws.
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 - 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" | |
Pom zoo:
Yuav ua li cas yog qhov tsawg kawg nkaus pob zeb npog nyob rau hauv mm ntawm ib tug cam khwb cia nyob rau hauv qhov chaw pob zeb tso tawm tsam thiab mus tas li raug rau lub ntiaj teb?
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