GB50974-2014消防给水及消火栓系统技术规范(6)

GB50974-2014消防给水及消火栓系统技术规范

Contents

1 General provisions……………………………………………………………………………1 2 Terms and symbols……………………………………………………………………………2

2.1 Terms………………………………………………………………………………………..2

2.2 Symbols……………………………………………………………………………………..3 3 Design parameter……………………………………………………………………… ……7

3.1 General requirement……………………………………………………………………….7

3.2 Fire flow rates of town…………………………………………………………………….7

3.3 Fire flow rates of outdoor hydrant for building……………………………………………8

3.4 Fire flow rates of outdoor for structures……………………………………………………9

3.5 Fire flow rates of indoor hydrant…………………………………………………………..14

3.6 Fire protection water demand…………………………………………………………… 16 4 Fire water ……………………………………………………………………………………18

4.1 General requirement………………………………………………………………………18

4.2 Water works system……………………………………………………………………….18

4.3 Fire reservoir………………………………………………………………………………18

4.4 natural water …….………………………………………………………………………. 20 5 Facilities of water supply……………………………………………………………………22

5.1 Fire pump…………………………………………………………………………………22

5.2 Elevated fire tank………………………………………………………………………….25

5.3 Make up pump……………………………………………………………………………..27

5.4 Fire department connection………………………………………………………………28

5.5 Fire pump room…………………………………………………………………………..29

6 Types of Fire protection water supply……………………………………………...………..32

6.1 General requirement……………………………………………………………………….32