Nick Finnigan wrote:

You certainly can get concrete pumpers - a house near me had
the solid ground floors re-made using one. IIRC it had a truck
with some hydaulic extending supports to get into the house,
and then flexible pipes to go inside the house. I don't know where
from or how much, but I'd expect a hefty minimum charge.

It certainly is a heft minimum charge - I was recently quoted
£800 to hire the pumping gear for one day. This didn't include
the concrete.

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Grunff