In reinforcement of slab what conditions applicable from bottom to support and top near to the support, what condition are taken ISO 1466,8666.?

In top of the reinforcement compressive act to the bottom of slab In botton of the reinforcement slab the tensile forcw acts at the support

in bottom layer we can make splices near to support but we can not make it in a top layer(negative momment) also we have to put additional bar in both directions around support avoiding punching