DCOM Volume I Appendix B

Appendix B: Minimum Water Flow Requirement for Fire Fighting

Category	Description	Minimum Flow in L/s
Housing	Housing developments with units of detached or semidetached houses of not more than two floors should have a water supply capable of delivering a minimum through any single hydrant of:	8
	Multi occupied housing developments with units of more than two floors should have a water supply capable of delivering a minimum through any single hydrant on the development of:	20-35
Transportation	Lorry/coach parks, multi-storey car parks and service stations.All of these amenities should have a water supply capable of delivering a minimum through any single hydrant on the development or within a vehicular distance of 90 metres from the complex of:	25
Industry	In order that an adequate supply of water is available for use by the Fire Authority in case of fire it is recommended that the water supply infrastructure to any industrial estate is as follows with the mains network on site being normally not less than DN150 (Up to one hectare)	20
	In order that an adequate supply of water is available for use by the Fire Authority in case of fire it is recommended that the water supply infrastructure to any industrial estate is as follows with the mains network on site being normally not less than DN150 (One to two hectares)	35
	In order that an adequate supply of water is available for use by the Fire Authority in case of fire it is recommended that the water supply infrastructure to any industrial estate is as follows with the mains network on site being normally not less than DN150 (Two to three hectares)	50
	In order that an adequate supply of water is available for use by the Fire Authority in case of fire it is recommended that the water supply infrastructure to any industrial estate is as follows with the mains network on site being normally not less than DN150 (Over three hectares)	75
Shopping, offices, recreation and tourism	Commercial developments of this type should have a water supply capable of delivering a minimum flow to the development site of between:	20-75
Education, health and community facilities	Village and small community halls.Should have a water supply capable of delivering a minimum flow through any single hydrant on the development or within a vehicular distance of 100 metres from the complex.	15
	Primary schools and single storey health centres.Should have a water supply capable of delivering a minimum flow of through any single hydrant on the development or within a vehicular distance of 70 metres from the complex.	20
	Secondary schools, colleges, large health and community facilities.Should have a water supply capable of delivering a minimum flow through any single hydrant on the development or within a vehicular distance of 70 metres from complex	35