Qhov siab tshaj plaws rau scaffolding tsis muaj outriggers (kev teeb tsa ywj pheej) feem ntau yog txwv los ntawm qhov yuav tsum tau ua kom ruaj khov, nrog rau cov kev txwv tseem ceeb los ntawm cov qauv engineering thiab cov cai kev nyab xeeb:
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Qhov Sib Piv Txwv ntawm Qhov Dav thiab Qhov Siab ntawm Lub Hauv Paus
Cov scaffolds yuav tsum tau lo rau ib qho4:1 qhov siab-rau-qhov dav pivPiv txwv li:- Qhov dav ntawm lub hauv paus ntawm 1.5m → Qhov siab tshaj plaws =6m(19.7 ft)
- Qhov dav ntawm lub hauv paus ntawm 2.4m → Qhov siab tshaj plaws =9.6m(31.5 ft)
Qhov no tiv thaiv kev ntxeev siab thaum muaj kev thauj khoom lossis cua hlob.
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Cov Kev Txwv Tshwj Xeeb rau Cov Khoom Siv
- Cov txheej txheem hlau H-ncej: Feem ntau capped ntawm9–12 m(30–40 ft) thaum siv cov kab pheeb ces kaum thiab cov kev sib txuas ntawm cov ncej khov kho.
- Cov scaffolds txhuas: Qhov txwv qis dua ntawm~ 7.5m(24.6 ft) vim yog qhov tsis ruaj khov ntawm cov qauv piv rau hlau.
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Cov kev xav tau kev nyab xeeb tseem ceeb
Qhov siab tshaj5muniversal xav tau:- Kev suav cov qauv uas tau ntawv pov thawj los ntawm tus kws ua vaj tse
- Kev kuaj xyuas kev sib dhos ntsug tas mus li (kev kam rau siab ≤1/200 ntawm qhov siab)
- Tsis suav nrog cov khoom thauj dynamic (piv txwv li, hoists) yam tsis muaj kev ruaj khov ntxiv.
⚠️ Kev Ua Raws Cai Hauv Cheeb Tsam :
- New Zealand yuam kom muaj daim ntawv pov thawj engineer rau cov scaffolds > 5m.
- Cov qauv UK (HSE) txwv tsis pub cov scaffolds sawv ntsug uas tsis muaj hlua khi > 9.6m tsis hais qhov dav ntawm lub hauv paus.
