Caisson Units (Milshaft), by Milton Precast
Caisson Units (Milshaft)
Reinforced manhole units suitable for sinking by the caisson method manufactured to BS 5911-200 and carry the BS Kitemark where appropriate.
Components (2400-3000 diameter)
- A nominal 1.0m base shaft ring composed of a 12mm overbreak concrete cutting shoe and a standard 0.5m deep shaft unit.
- Chamber sections in 0.5 and 1.0m depths
- Jointing plates
- Butyl rubber joint sealant
- Lifting Brackets
- Landing slab 1.0m deep shaft ring
- Landing slab in two halves
- Landing slab support angle cleats
- Cover slab
The 4.0m caisson is manufactured in two halves and has a separate steel cutting shoe. Components 2, 3, 4, 5, 6, 7, 8 & 9 as above. The cover slab is supplied in two halves.

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