These holes are caused by bars that are put through the frame before the concrete is poured and then clamped, so the mold can't swell outward.
Is there a name for these holes though that is widely recognized?
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Sign up to join this communityThese holes are caused by bars that are put through the frame before the concrete is poured and then clamped, so the mold can't swell outward.
Is there a name for these holes though that is widely recognized?
These are left over from concrete ties which are used to hold the formwork together ready for pouring concrete. They are usually called tie holes.
After the concrete is cured and forms need to be removed their ends protruding out are bent and snapped.