I am constructing a concrete pad to support a lightweight cabin the side of the pad is 5.6metres by 4.1metres. the depth of the concrete is 10cm. What I would like to know is where do I need to put control joints if at all. The pad is constructed in 5 sections.
Thanks for your help.
Eric
Control joints - Concrete base for log cabin
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Tony McC
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5.6 x 4.1 is just over the recommended max slab size of 20 square metres, and at only 100mm thickness, the max recommended dimension for any un-jointed section is 3m.
If you increased slab thickness to 135mm, you could get away with just a single control joint giving you two sections each being 2.8 x 4.1. However, if yu have a really good sub-base and use a fibre-reinforced ready-mixed concrete, I reckon you could get away with the 100mm thickness and the single control joint, as there is no vehicular access (I assume).
If you increased slab thickness to 135mm, you could get away with just a single control joint giving you two sections each being 2.8 x 4.1. However, if yu have a really good sub-base and use a fibre-reinforced ready-mixed concrete, I reckon you could get away with the 100mm thickness and the single control joint, as there is no vehicular access (I assume).
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