Video: Dab tsi yog qhov joist seat qhov tob?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Raug zaum qhov tob rau luv luv joists (SJ, S, J, H & K) yog 2 ½". Raug zaum qhov tob rau kev ncua ntev joists (Longspan, L, LA, LJ, DLJ, LH, DLH) yog 5 ". Rau DLH-Series nrog chord ntu 18 txog 25, lub zaum qhov tob yog 7 ½ ".
Tsis tas li ntawd, qhov tob ntawm lub joist yog dab tsi?
Txuj qhov tob = 2.5 . Qhov tob tob tuaj yeem muaj los ntawm ntoo chaw tsim tshuaj paus Joist Hloov cov qauv qhov tob yog 2.5 ntiv tes thiab tej zaum yuav muaj qhov xaus rau overhangs (outriggers).
Tsis tas li ntawd, K series joist yog dab tsi? K - Series Bar Nkawm khau . K Series bar joists yog tsim los rau kev siv feem ntau nrog cov khoom sib zog thiab feem ntau muaj nyob rau hauv ru tsev tsim. K Joists feem ntau yog siv rau qhov uas yuav tsum tau ua kom luv luv.
Qhov thib ob, dab tsi yog qhov kev coj tus kheej qhov tob ntawm 16k3 joist?
Cov tswv cuab no tau ua qauv rau qhov tob los ntawm 20 nti (508 mm) mus rau 120 nti (3048 mm), thiab spans mus rau 120 ko taw (36, 576 mm). Tus qauv qhov tob ntawm kev coj tus kheej xaus tau tsim los ntawm 7 1/2 ntiv tes (191 mm) rau txhua tus Joist Girders.
Kuv puas tuaj yeem laum los ntawm cov joists hauv pem teb?
Lub qhov tsis tuaj yeem loj dua ib feem peb ntawm qhov tob ntoo , yog li qhov siab tshaj qhov loj me rau 2 × 12 ntoo (qhov loj me 1-1/2 x 11-1/4 nyob rau hauv.) yog 3-3/4 nyob rau hauv. tuaj yeem laum lub qhov nyob qhov twg raws qhov ntev ntawm lub ntoo (thawj daim duab). Yog tias koj tau tsim kuv- joists , koj tuaj yeem laum qhov mus txog 1-1/2 nyob rau hauv.
Pom zoo:
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Cov ko taw feem ntau yuav tsum txuas mus rau hauv qab kab Frost kom tsis txhob hloov pauv thaum lub caij khov-thaw. Khawb footing qhov txog 6 nti tob dua li qhov xav tau. Sau rau hauv qab ntawm lub qhov nrog 6 nti ntawm gravel thiab compact lub gravel nrog ib tug 2x4 los yog ntoo ncej