Video: Cov footers yuav tsum dav npaum li cas?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Nquag ua pob zeb footer yog 20, 24 lossis 30 nti dav thiab tsawg kawg yog 8-nti tuab. Ntau zaus tshaj tsis koj yuav pom lawv 10-nti tuab. Qhov nruab nrab lub hauv paus phab ntsa feem ntau tsuas yog 8-nti tuab ( dav ).
Hais txog qhov no, yuav tsum tuab thiab dav npaum li cas?
Qhov tob: Cov ko taw yuav tsum txuas mus rau qhov tsawg kawg nkaus qhov tob ntawm 12 ntiv tes hauv qab cov av uas tsis muaj kev cuam tshuam yav dhau los. Footings thiab yuav tsum txuas ntxiv tsawg kawg 12 ntiv hauv qab kab te (qhov tob uas av khov thaum lub caij ntuj no) lossis yuav tsum yuav tiv thaiv te. Dav : Cov ko taw yuav tsum muaj qhov tsawg kawg nkaus dav ntawm 12 nti.
Ib tug kuj yuav nug, footing loj npaum li cas txiav txim? Av Siab = lub peev xwm ntawm cov av los tiv thaiv ib tug load muab tso rau nws. Kem lossis Phaj Dav = Lub Square qhov loj ntawm kab los yog phaj uas yuav nyob rau hauv kev sib cuag nrog rau sab saum toj ntawm lub Taw taw . Tso cai Load rau Footings = Qhov no yog Tag Nrho Load uas nqes nqes mus rau saum lub Taw taw.
Txog qhov no, qhov dav npaum li cas yuav tsum tau ua rau lub chaw nres tsheb?
Qhov tsawg kawg nkaus dav ntawm footings, rau ib qho chaw nres tsheb ib-zaj dab neeg yog 12 ntiv tes ( 305mm ua ); txhua qhov chaw sab nrauv yuav tsum muab tso rau yam tsawg kawg 12 ntiv tes ( 305mm ua ) hauv qab ntawm qhov chaw tsis muaj kev cuam tshuam; carport thiab garage floor slabs, nyob rau hauv lub xeev Minnesota, yuav tsum yog huab cua entrained thiab yuav tsum muaj tsawg kawg nkaus compressive
Qhov luaj li cas ntawm tus qauv footing?
Qhob Footing Dimensions
| Yam tsawg kawg nkaus dav ntawm pob zeb lossis Masonry Footings (inch) | ||
|---|---|---|
| Load-Bearing Tus nqi ntawm av (psf) | ||
| 4-Inch Brick Veneer Tshaj Ntoo Ncej lossis 8-Inch Hollow Concrete Masonry | ||
| 1- dab neeg | 19 | 15 |
| 2-zaj dab neeg | 25 | 19 |
Pom zoo:
Ntev npaum li cas cov footers yuav tsum tau kho?
Feem ntau, tib neeg pib tsim lub hauv paus tom qab 3 los yog ntau tshaj hnub nyob rau hauv ntau dua los yog tsis xis nyob. Cov huab cua txias yuav siv sij hawm ntev dua. Feem ntau, koj yuav xav tias nyob ib ncig ntawm ib nrab ntawm lub zog tshwj xeeb ntawm 7 hnub. thiab ib nrab ntawm qhov ntawd ntawm 3 hnub, hauv cov ntsiab lus puag ncig
Kuv yuav tsum tau ua cov cement ntau npaum li cas Kuv yuav tsum tau ntim 5 nkas loos thoob?
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Tus neeg cog lus dav dav yuav tsum tau nyiaj npaum li cas?
Raws li Kev Tsim Kho Nyiaj Txiag ManagementAssociation (www.cfma.org), qhov nruab nrab cov nyiaj ua se ua ntej rau cov neeg cog lus dav dav yog nyob nruab nrab ntawm 1.4 thiab 2.4 feem pua thiab rau cov neeg ua haujlwm subcontractors ntawm 2.2 txog 3.5 feem pua. Qhov no tsis muaj txiaj ntsig txaus los them nyiaj rau cov neeg ua haujlwm pheej hmoo