Kuv yuav txiav txim siab npaum li cas beam kuv xav tau rau phab ntsa load bearing?
Kuv yuav txiav txim siab npaum li cas beam kuv xav tau rau phab ntsa load bearing?

Video: Kuv yuav txiav txim siab npaum li cas beam kuv xav tau rau phab ntsa load bearing?

Video: Kuv yuav txiav txim siab npaum li cas beam kuv xav tau rau phab ntsa load bearing?
Video: ib sim txiv tub cas yuav luv dhau by kawm muas 2024, Kaum ib hlis
Anonim

Cov mis rau qhov seem modulus yog nqaj dav lub sij hawm nqaj qhov tob squared muab faib los ntawm 6. A ob 2-by-6 tus qauv nqaj muaj tiag qhov ntev ntawm 1.5-by-5.5 ntiv tes uas yuav muab ib seem modulus ntawm 1.5 x 5.5 x 5.5 / 6 = 7.6 uas tsis txaus rau qhov piv txwv no. Ib 2-by-8 nqaj yuav txaus.

Tsuas yog li ntawd, koj yuav suav beam loj li cas?

Ntsuas qhov deb ntawm inches uas koj xav tau cov hlau nqaj kom puv. Sau daim duab no rau ntawm ib daim ntawv raws li koj qhov meej meej rau qhov nqaj . Ntsuas tus ntev nyob rau hauv inches ntawm pem teb joist tias kuv- nqaj yuav tsum txhawb. Faib tus lej ntawd los ntawm ob.

Tsis tas li ntawd, qhov hnyav npaum li cas tuaj yeem tuav tau? Yog koj muaj ib tug nqaj ntawm cov hlau uas muaj qhov yooj yim tso cai khoov kev ntxhov siab txog li 23000 lbs ib square inch, los ntawm lub sij hawm koj ua nyiaj pub rau lub ncua thiab tsis muaj kev txwv, qhov tseeb dabtsi yog khoov kev nyuaj siab uas lub beam tau kov yog nqis mus txog 6100 lbs ib square inch nyob rau hauv cov xwm txheej no.

Ib yam li ntawd, nyob deb npaum li cas tuaj yeem ua rau lub 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.

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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