AAC Block is a pre-casted construction element which is used in the erection of buildings as an alternate of the traditional red bricks. It is made from autoclaved aerated concrete which is a made by mixing of elements like cement, lime, sand, water, and various types of additives. It is cured under heat and pressure in a machine to carry out industrial processes for melding multiple layers and to prevent any void to increase the mechanical strength and make the structure highly durable to withstand severe climatic conditions. AAC Block is an Eco-friendly, high insulating mass of composite materials which is three times lighter than a red cubical brick. It has an excellent thermal efficiency which reduces the heating and cooling load in construction buildings.