Sistering joists txhais tau tias beefing lawv nrog cov khoom ntxivUa li ntawd ua kom cov joists tsis muaj zog thiab tuaj yeem pab ncaj sagging joists. Framing lumber yog qhov kev xaiv zoo rau cov viv ncaus cov khoom, tab sis cov khoom siv ntoo ua haujlwm tau ntxiv cov tawv tawv ntau dua li cov ntoo ntoo.
Nyob hauv kev tsim kho yog dab tsi?
Ib tug muam yog ib tug thib ob stud uas tau nruab nrog rau ib lub stud uas twb muaj lawmNws yog feem ntau yog siv los txhawb lub stud uas tau raug puas los yog hneev rau hauv ib qho kev cuam tshuam nws load-bearing muaj peev xwm. Cov viv ncaus kuj tuaj yeem ua tau los txhawb nqa cov joists hauv pem teb lossis cov rafters.
tus muam joist yog dab tsi?
Tsuas hais tias, tus muam tsuas yog txhais tau tias ntxiv cov khoom ntxiv kom ntxiv dag zog rau cov khoom puas, feem ntau hauv pem teb joists. Cov khoom siv nrov tshaj plaws rau qhov no yog framing lumber, tab sis engineeringed lumber cov khoom yuav ua tau kom muaj zog ntau dua li cov lumber.
Nyob ntev npaum li cas tus muam joists?
Yog qhov tawg lossis sag cais rau ib cheeb tsam, tus viv ncaus joist yuav tsum txuas ntxiv tsawg kawg 3 ft. ntawm ob sab ntawm qhov teeb meem cheeb tsam. Tab sis feem ntau nws yog qhov zoo tshaj plaws los khiav tus viv ncaus joist hla tag nrho qhov ntev. Thaum cov sagging joists yog theem, siv cov hlaws dav dav ntawm kev tsim cov nplaum rau cov joist uas twb muaj lawm.
tus muam board yog dab tsi?
Txoj kev uas yooj yim tshaj los kho qhov kev sib tshuam yog khov kho rau lwm lub rooj sib npaug lossis loj dua rau cov lus nug sib koomLub rooj tsavxwm no hu ua "tus muam board" thiab tag nrho txheej txheem hu ua "sistering." Koj tuaj yeem ua kom cov plag tsev uas "bouncy" los ntawm kev siv cov txheej txheem no.
