Inclusive of concrete laid to falls.

Выражение встречается в следующем контексте:

Manhole over road surface
- Excavation as necessary
- Including the prefabricated chamber in concrete? internal diameter 800 mm.
- Inclusive of concrete laid to falls.

Заранее спасибо

Paved areas are usually laid to falls to channels and gullies that drain to surface water drains