Claim: Souk Kriaa is a covered space with a regular square shape, and due to the abundant supply of building materials after the World War (like iron and cement, etc.), Mohammed Kriaa preferred using iron and cement to build the souk.
Evidence: Souk Kriaa is a covered space with an irregular pentagon shape, with four domed wings and a huge entrance that contains a huge dome. 
After the World War II, due to the immense lack of building materials (like iron and cement etc.), Mohammed Kriaa preferred using local materials to build the souk.