(1) Ua ntej cov neeg ua haujlwm ua haujlwm tau ua tiav, tus neeg ua haujlwm Erefection yuav tsum tau qhia txog kev nyab xeeb thev naus laus zis thiab ua cov txheej txheem kos npe
(2) Thaum erecting cantilevered scaffolding, cov qhob ntawm lub ntsiab qauv sib xws nrog cov phab ntsa fittings thiab seem steel txhawb ncej yuav tsum tau los ntawm tus qauv. Thaum lub puab tsaig sab sauv yog txhim tsa, cov sib raug ua vaj tse lub zog ntawm ntu steem stand stomple ncej yuav tsum tsis tsawg dua c15
(3) Kev sib txuas ib ntus yuav tsum tau muab ntsia thaum txhim kho lub sijhawm erection, thiab cov kev sib txuas ib ntus tuaj yeem tshem tawm raws li qhov xwm txheej phab ntsa tsis tuaj yeem muab tshem tawm cov phab ntsa fittings yog muaj kev ruaj khov; Rau qhov kev ua kom dhau ntawm scaffolding uas tsis tau ua tiav, kev ntsuas txhim khu kev qha yuav tsum tau coj los kho nws thaum kawg ntawm lub hnub, kom ntseeg tau tias lub thav duab. Tom qab txhua kauj ruam (txheej) ntawm scaffolding yog tsa, cov kauj ruam deb, ntsug nrug, thiab tig rov qab ntawm tus ncej yuav tsum tau kho raws li yuav tsum tau ua.
(4) Yog tias cov duab scaffolding los yog cov kws tsim kev ua yeeb yam kev ua haujlwm, cov neeg cog lus yuav tsum tau saib xyuas thiab siv ntau yam kev ua kom muaj kev nyab xeeb.
Lub Sijhawm Post: Oct-29-2020