Decked roof may not give you too many options in terms of design, but it also has its own advantages and quite a few uses decked roof.

Before you decide on using decked roof or concrete slab to cover your structure you must have factor the weight during design process.

In this case we are looking at flat concrete roof.

http://buildingcontractorsecrets.com/2012/05/concrete-roof-decking-processesadvantages-and-disadvantages/