One Way Slab

This design is for a typical suspended slab that has dimensions where one-way action occurs. This occurs when one dimension is longer than the other one so that the loads are supported in the short direction.

If the slab is poured separately from the supporting walls then the slab can be considered a simple span. The slab has positive moment across the complete span with maximum moment occurring at mid-span and 0(zero) at the supports.

In this case the moment steel is placed in the slab bottom and extends across the entire slab length. The steel in the other direction is minimum steel, temperature and shrinkage steel.

If the slab is poured monolithically with the walls then rigidity is developed at the supports. Therefore some negative moment occurs at the support and steel is required.

The design will include:

• Slab thickness
• Steel sizes
• Sheet designation

Click here for design example