When pouring a concrete slab, what is the minimum length for stakes used for formwork?

When pouring a concrete slab, using stakes for formwork is essential for ensuring the molds hold their shape and position during the pouring and curing processes. The minimum length for stakes is typically around 1 foot. This length allows for adequate penetration into the ground to provide stability and resistance to lateral forces from the wet concrete. A 1-foot stake is long enough to ensure that the formwork remains secure, so it won’t shift or deform under the weight of the concrete or when pressure is applied while finishing the surface.

Additionally, stakes that are too short may not provide sufficient anchorage, which can lead to issues such as bowing of the forms which can ultimately affect the dimensions and overall quality of the poured slab. Therefore, having a stake that is at least 1 foot long strikes a suitable balance between being long enough for stability while also being manageable for handling and installation during the formwork setup.