Table 10.4    Recommended Peaking Factors for Sewers

 

Population

Peaking Factor for Sewers*

< 1,000

8

1,000 – 5,000

6

5,000 – 10,000

5

10,000 – 50,000

4

> 50,000

7.3/N0.165

Notes:

1.       * denotes peaking factors including stormwater allowance based on Sewerage Manual Part 1 (DSD, 1995).

2.       N denotes equivalent population / 1,000.

3.       Equivalent population = ADWF (m3/d) / 0.27.