Pipe Size Consideration

 

The cross sectional area of a pipe is one of the important parameters in determining good flow rates and acceptable industry standards. Frictional losses are also dependent upon the length of pipe but most importantly, the cross sectional area of each pipe effect the loss more rapidly.  

 

                       The chart below, describes the pipe sizes and cross sectional area in sq. ft.

 

Nominal

size

Inside diameter

Cross sectional area

1 ½”

1.61”

.0141

2”

2.067”

.0233

2 ½”

2.469”

.033

3”

3.068”

.015

4”

4.026”

.088

 

 

 

 

 

 

 

 

 

 

 

 

 

Pipe size

GPM

Velocity

ft/sec

1-1/2”

35

5.5

2”

60

5.8

2-1/2”

80

5.4

3”

130

5.6

4”

175

4.5

 

 

 

 

 

 

 

 

 

 

 

 

 

RECOMMENDED LIMITS FOR EACH PIPE SIZE