Video: Puas yog nws zoo rau ntsia hlau rau hauv pem teb?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Cov qhov tsis tuaj yeem loj dua li ib feem peb qhov tob ntawm cov ntoo, yog li qhov loj tshaj qhov loj rau 2 × 12 joist (qhov loj me 1-1/2 x 11-1/4 in.) yog 3-3/4 nyob rau hauv. Koj tuaj yeem laum qhov nyob txhua qhov chaw raws qhov ntev ntawm cov joist (thawj daim duab). Yog koj tau tsim I-joists, koj tuaj yeem xyaum qhov mus txog 1-1/2 nyob rau hauv.
Yog li ntawd, dab tsi yog siv screws rau pem teb joists?
Hlau Ntsia hlau Cov hlau zoo ntsia hlau qhov ntau thiab tsawg rau kev ruaj ntseg 3/4-nti plywood rau lub pem teb joists yog #8, #10 thiab #12 ntsia hlau . Tus lej hais txog qhov tuab ntawm lub ntsia hlau . Txhua qhov muaj nyob rau hauv qhov ntev ntawm 1 1/4 txog 3 ntiv tes. Feem ntau, 3-nti ntau yam yog siv kom ruaj ntseg plywood subfloors.
Tsis tas li ntawd, koj hnyav npaum li cas koj tuaj yeem dai los ntawm cov khoom siv hauv pem teb? Yog koj spread ua hnyav thoob 3 joists , uas tso tsuas yog 100 lbs ib ntoo (ua tau zoo heev). Yog koj txhawj xeeb txog tej yam muaj peev xwm sagging, koj ua tau nthuav tawm ntxiv hnyav hla 2 bolts per ntoo , uas tsuas yog 50 lbs ib lub bolt (zoo heev).
Ua raws li qhov no hauv kev txiav txim siab, kuv tuaj yeem xyaum qhov twg hauv qhov joists?
thaj tsam nruab nrab ntawm 2 × 10 ntoo qhov twg qhov tuaj yeem mus. Txawm hais tias notches tsis pub nyob rau hauv nruab nrab peb ntawm ib joist cov ntev, koj ua tau laum qhov nyob qhov twg raws qhov ntev ntawm hauv pem teb ntoo ib 5 1-4. cheeb tsam muab tsis muaj lwm yam qhov hauv ntoo los yog thais raws nws sab saum toj lossis hauv qab.
Koj puas tuaj yeem laum lub qhov los ntawm kev txhawb nqa beam?
Shear yog qhov loj tshaj nyob ze txhawb nqa ntawm nqaj (cov ntsiab lus bearing). Khoov yog qhov loj tshaj plaws nyob rau hauv nruab nrab ntawm ib qho kev ncua. Muaj ib txoj kab kev xav dhau kab rov tav nruab nrab ntawm a nqaj , paub li 'neutral axis'. Qhov tau raug laum dhau lub nruab nrab axis tsis poob ntawm 'bending' lub zog.
Pom zoo:
Puas yog masonry ntsia hlau mus rau hauv cib los yog mortar?
Masonry Ntsia. Siv cov ntsia hlau los txhawb lub teeb rau nruab nrab qhov hnyav txuas. Masonry rau tes tuaj yeem txhawb nqa cov hlua khi, cov hlua khi, lossis cov laug cam txog 1½ tuab (38mm; thickness ntawm 2 x 4). Lawv yog tsim rau anchoring rau hauv lub mortar pob qij txha ntawm bricks
Vim li cas koj thiaj li muab ob npaug rau hauv pem teb joist nyob rau hauv ib tug uas tsis yog load bearing internal phab ntsa?
Feem ntau: Thaum Doubled FJ's nyob rau hauv cov phab ntsa uas tsis yog-load bearing los tshem tawm hauv pem teb flex uas tsim cov phab ntsa ntub dej saum lub qhov rooj ntawm phab ntsa saum toj no, feem ntau ntawm chav pw thiab chav da dej
Koj puas tuaj yeem muab cov ntsia hlau rau hauv Cib?
Txhawm rau txhawm rau cib tsuas yog ob yam koj xav tau. Thauj tog rau nkoj screws (Walldog, qhob ntsia hlau, ntsia hlau thauj tog rau nkoj) thiab masonry laum me ntsis. Nws yooj yim dua rau laum rau hauv lub mortar dua li nws mus rau hauv lub cib vim tias lub mortar softer, tab sis qee zaum cov grout tsis yog qhov koj xav tau koj lub qhov
Kuv yuav tsum ntsia hlau los yog ntsia hlau kuv lub lawj?
Kkeilman Cov Lus Teb: Screws yog 'superior' fastener tshaj tus ntsia thawv (lawv muaj lub zog tensile zoo tshaj)-tshwj xeeb tshaj yog tias koj tab tom tham txog screwing down decking. Siv koj lub lawj piv txwv - koj yuav tsum siv cov ntsia hlau los txuas cov joists rau lub lawj thav duab tab sis siv cov ntsia hlau txhawm rau txhawm rau txhawm rau hauv decking nws tus kheej
Puas yog nws zoo siv cov ntsia hlau rau ntawm cov hlua khi?
Cov neeg tsim khoom pom zoo: Tsis txhob siv galvanized lawj screws lossis drywall screws rau nruab joist hangers. Cov screws tsis muaj lub shank loj thiab toughness los txhawb joist loads