The customary slab formwork puts to use masonry, timber and carpentry for the completion of the construction work. The formwork of the metal beam slab kinds is more or less similar to the traditional slab method. But the major difference is that steel is being used in place of wood and metal props are put to use as a replacement for the supports. This system is methodical and reusable. The concrete finish is smoother and the system can be easily removed after curing of the cement. The lock-form system offered by the leading companies is totally unique and offers a remarkable R-Value Insulation which is the largest in the market. The resulting buildings are sustainable and cost effective. The concrete structures developed by using this technique are energy efficient. The system is very light and highly versatile and can easily be adapted by the architects according to requirement of the clients.