Hi, Rib and cassette slab concrete quantity gives the total concrete quantity of slab and rib teeth. The slab concrete quantity gives only the quantity of slab slabs. Since there is no slab flooring in your project, the concrete floor quantity is not given. The format of reinforcement quantities is different. In rib and cassette slabs, the reinforcement quantity of the plate part of the rib slab is given in the slab reinforcement quantity. In rib and cassette quantities, the reinforcement quantity of the teeth is given.