TECHNICAL REPORT - Dimensional based particulars
Ductile iron manhole covers
- heavy duty loading class: 350; 400 kN
Lid Description:
- Vented Lids:
- Grated-Lid:
Frames description:
- Applicable on 600mm / 24" round manholes, or on concrete slabs:
- Applicable on 750mm / 30" round manholes: