What it is
Near beams and walls, a slab bends the other way (the top is in tension). Cranked bars run along the bottom in the middle and rise to the top near the supports, putting steel where it is needed.
Key points
- Bent up at about 45 degrees
- Usually alternate bars are cranked
- Shown in the slab reinforcement drawing
- Extra top bars are sometimes used instead
Why it matters
Missing or wrongly placed top steel near supports is a common cause of cracks along the edges of slabs.
How Elamentt handles it
Slab steel, including cranks and extra top bars, is laid to the structural drawing and checked before the pour.