It is necessary to note that metal buildings can be very resilient to our weather conditions, whether it is the pounding of the sun or the intense rainfall that we experience in our coastal regions. The use of the sponge Iron Plant, the findings of the resultant dust accumulation can be very surprising, for many reasons. Cost Savings This type of building has the advantage of reduced maintenance costs, not to mention lower utility costs and very flexible interior space. Actually, PTE has saved about USD 2.3 million, in a year it has a maximum saving of 7.2 million, while the construction of the building itself cost less than USD 1 million.