a) Precast concrete is safe in that; the structural stability is sustained for long periods. They also prevent the spread of fire from one structure to another, as well as strength in resisting collision and natural catastrophes.
b) Precast concretes are durable, due to their structural stability. A good design depending on the functionality and environment will assist in extend the life of a precast concrete building.
c) It is affordable as the material used in the process and the process itself is cheap. Repair and maintenance of structures built using precast concrete is limited and cheap. The quality is also high at a low price, eliminating the need to control quality based on price.