Advantages are important to be noted, bu also the disadvantages to be registered and escaped. Every construction should start with a list of the pros and cons. Undoubtedly, the cons should be avoided and minimized. On the other hand, the pros should be followed and incorporated in the construction. For instance, when we are making a roof truss, we should pay attention to the material because the truss must be very strong. Because of that, there are common sizes of the wood (2×4 and 2×6), common metal connectors. Also, the constructors should precisely estimate the quality of the wood, whether it can be replaced with light steel frame or else.