The coincident draft is given bya)maximum hourly demand fire demandb)m...
Explanation:
The coincident draft is a term used in the design of water supply systems for firefighting purposes. It refers to the maximum flow rate that is required to fight a fire, which is the sum of the maximum daily demand and the maximum hourly demand.
Maximum Daily Demand:
The maximum daily demand is the amount of water that is required by a building or structure on a daily basis. It is usually calculated based on the number of occupants, the type of activity, and the amount of water that is used for various purposes such as washing, cooking, and drinking.
Maximum Hourly Demand:
The maximum hourly demand is the amount of water that is required by a building or structure during the peak hour of water usage. This is usually calculated based on the number of occupants, the type of activity, and the amount of water that is used for various purposes such as washing, cooking, and drinking.
Greater of (b) and (c) above:
The coincident draft is calculated by taking the greater value of the maximum daily demand and the maximum hourly demand. This is because during a fire, the demand for water can be much higher than the normal daily or hourly demand, and the water supply system must be able to meet this demand.
Conclusion:
In conclusion, the coincident draft is the sum of the maximum daily demand and the maximum hourly demand, which is calculated based on the water usage requirements of a building or structure. It is important to calculate the coincident draft accurately to ensure that the water supply system can meet the demand during a fire emergency.
The coincident draft is given bya)maximum hourly demand fire demandb)m...
This is a thoerytical concept, coincident draft is the maximum of max daily demand +fire demand and max hourly demand