Yonke imishini yokudubula ukuqhuma kufanele ihambisane nale mithetho elandelayo ngesikhathi senqubo yokufaka:
1. Ukusingathwa kusendaweni: izinga nesisindo somsingathi kufanele kuhlangabezane nezidingo zokudweba lapho kusendaweni.
Ukufakwa kwengxenye engaphansi kufanele kwenziwe kusuka phansi kuya phezulu.
I-3, ujantshi noma i-catenary, uhlobo lwe-roller kufanele lubangelwe ngaphakathi ngaphakathi kwensiza.
Ukuhlolwa kwangaphambi kokukhetha kufanele kwenziwe ngesikhathi sokuhlolwa, bese konke kusebenza ngemuva kokusebenza okujwayelekile.
Isikhathi Iposi: Nov-30-2020