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.
4. Ukuhlolwa kwangaphambi kwesigaba kufanele kwenziwe ngesikhathi sokuhlolwa, bese kuthi konke kugijime ngemuva kokusebenza okujwayelekile.
Isikhathi sokuthumela: Apr-17-2019