1. Rau sab hauv tsev cable tais, qhov luv luv nrug rau kev txhawb nqa thiab hangers feem ntau yog 1.5-3m. Rau sab nraum zoov kab, qhov nruab nrab ncua deb yog feem ntau 6m.
2. Kev teeb tsa ntawm kev txhawb nqa thiab hangers rau tsis yog - ntu ncaj yuav tsum ua raws li cov hauv paus ntsiab lus no: Thaum lub phaj cable dav yog 300mm, ntxiv rau kom ua tau raws li cov xwm txheej hauv qab no, yuav tsum tau nruab ib qho kev txhawb nqa ntxiv lossis hanger rau hauv nruab nrab ntawm qhov tsis yog - ntu ncaj.
3. Thaum cable tais tau nruab rau hauv ntau txheej, qhov chaw nruab nrab - mus rau - nruab nrab ntawm cov txheej yuav tsum yog 200, 250, 300, lossis 350mm.
4. Ib qho kev nthuav dav sib koom ua ke ntawm 20-30mm yuav tsum tau muab txhua 50m rau cov ntu ncaj ntawm cable tais (rau cov tais hlau hlau).
5. Cov kab hluav taws xob hluav taws xob yuav tsum tau ua los ntawm cov hlau los yog tsis yog -combustible los yog nplaim taws- cov ntaub ntawv retardant.