Yog vim li cas:
1. Sib dhos me me steel pwm, tsis teeb tsa raws li kev cai, ua rau kev ua haujlwm tsis zoo ntawm lub tsev
2. Lub hauv paus uas lub formwork muab tso rau yog tsis ruaj khov, tsis muaj lub phaj tiaj tiaj, thiab cov dej tsis zoo ntsuas ua rau lub hauv paus poob
3. Ntoo formwork lossis plywood yog siv rau kev tsim kho. Tom qab dhau qhov kev lees paub, cov pob zeb tsis tau nchuav rau lub sijhawm, thiab qhov chaw deformed vim lub hnub ntev thiab los nag.
4. Qhov kev txhawb nqa qhov sib txawv yog qhov loj heev, thiab qhov rigidity ntawm cov phaj hlau tsis zoo
5. Qhov ceev ntawm pouring qhob rau cov phab ntsa thiab txhua kab yog ceev heev, qhov siab ntawm ib tug pouring yog siab dhau heev lawm, thiab lub vibration yog heev.
Kev daws:
1. Thaum sib sau ua ke me me steel formwork, cov connectors yuav tsum tau muab tso rau raws li cov kev cai, thiab qhov sib txawv thiab specifications ntawm lub purlins thiab nro bolts yuav tsum tau teem raws li tsim nyog.
2. Kev txhawb nqa qhov sib nrug ntawm lub hauv qab ntawm lub nqaj yuav tsum muaj peev xwm xyuas kom meej tias tsis muaj deformation nyob rau hauv qhov kev txiav txim ntawm cov pob zeb hnyav thiab kev tsim kho. Yog tias qhov kev txhawb nqa hauv qab yog lub hauv paus hauv av, nws yuav tsum tau compacted ua ntej, teeb tsa cov kwj deg, thiab nteg ntev skids los yog seem hlau kom ntseeg tau tias tsis txhob poob.
3. Thaum siv ntoo formwork thiab plywood lub tsev formwork rau kev tsim kho, pob zeb yuav tsum tau nchuav rau hauv lub sij hawm tom qab tau txais kev pom zoo los tiv thaiv lub tsev formwork los ntawm deformed vim lub sij hawm ntev raug rau lub hnub thiab los nag.
4. Thaum tsim lub tsev formwork thiab kev txhawb nqa, tag nrho cov kev txiav txim siab yuav tsum tau muab rau nws tus kheej qhov hnyav, kev tsim kho, cov ntsiab lus ua vaj tse thiab lub siab sab nraud tsim thaum lub sij hawm nchuav, thiaj li ua kom lub tsev formwork thiab kev txhawb nqa muaj peev xwm txaus, nruj thiab ruaj khov.
5. Rau cam khwb cia-nyob rau hauv-qhov chaw reinforced pob zeb beams thiab slabs nrog ib tug ncua tsis tsawg tshaj li 4m, lub tsev formwork yuav tsum tau arched raws li tsim nyog; thaum tsis muaj qhov yuav tsum tau muaj tshwj xeeb hauv kev tsim, arching qhov siab yuav tsum yog 1/1000-3/1000 ntawm qhov ntev.
