Ductile Cast Manhole birta Daboolista iyo freeemka iyo jeexjeexyada iyo shabaglaha ay soo saarto shirkadeena oo leh faa'iidooyin hoos ku qoran:
★ Ammaanka, ka ilaali daboolka in la xado.
★ qaylo la'aan.
★ Xamuul sare.
★ iska caabinta daxalka.
★ Ammaan
1. Marka loo eego BS EN124: 1994.
2. Heerka walxaha: GGG500/7.
3. Dahaarka: bitumen madow, budada epoxy.
4. Daboolida godka birta birta ah iyo qashin-qubka ayaa loo qaybiyaa fasalada soo socda: A15, B125, C250, D400, E600 iyo F900.