This YouTube video from "Irfan CFPS" explains the concept of CMDA sprinklers, which are a type of sprinkler designed for fire control in storage applications. The video details how to calculate water demand for a storage facility using the CMDA approach, which involves determining the density and area of the sprinkler operation. The video then demonstrates how to adjust the density based on the actual storage height. Finally, it calculates the total water demand, hose stream allowance, and required water supply duration, as well as the number of sprinklers needed.