Longer span Trench Cover 1500mm long x 300mm wide x 50mm to 70mm.
It is 50mm thick over the supports and 70mm thick at mid-span.
Concrete: 30MPa, reinforced.
Structural design: To SANS 0100 The structural use of concrete
Loading:
Permissible:
Predestrians only.
Not permissible:
Areas open to public or bunching of people, Definitely no vehicles, storage or equipment.