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I'm planning a slab of 5m x 3m x 150mm some time in late spring / early summer, as the base for a garden office.
I'll probably go the lorry & pump route, as I can't be dealing with wheel-barrowing a couple of tonnes of hardcore, aggregate, sand and cement down a narrow pathway.
Won't be reinforcing with any steel though - fibre mesh at most, but only if advised by the people we're buying the office from.
Anyone with experience on big size concrete slabs? 7x4m 15cm, 12cm deep....I know what to do to prepare site and build framework. However the pouring part on such a big area seems scary without prior experience.