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Products > PCCP > Deflections

 

[Dimensions] [Deflections] [Manufacturing]

 

 

Nominal Inside Pipe Diameter Deflected Joint (2) Beveled Joint (3) 
Maximum Allowable Deflection Maximum Allowable Deflection Minimum(4) Pipeline Centerline Radius Maximum Bevel Minimum(4) Pipeline Centerline Radius
(mm) (mm) (degree) (mm) (degrees) (m)
1200 30 1.31 219 5.00 57
1400 30 1.14 376 5.00 86
1600 30 1.01 426 5.00 86
1800 30 0.90 477 5.00 86
2000 30 0.81 528 5.00 86
2200 30 0.74 586 5.00 86
2400 30 0.68 655 5.00 86
2600 30 0.63 678 4.50 95
2800 30 0.59 736 4.50 95
3000 30 0.55 781 4.00 107

 

Notes:  
1. To maintain pipeline stationing, pipe should be installed with the normal interior joint space of 25 mm.  Minor corrections in stationing can be made by increasing joint space to a maximum of 50 mm or by decreasing to a minimum of  20 mm.

2. Standard joints are deflected to form curves to span angle points or to correct alignment and grade.  Joint deflections is  accomplished by increasing the interior joint space on one side of the pipe and decreasing the interior joint space on the opposite side.  The deflection of a joint in millimeters is the difference between the widest and narrowest interior joint space.

3. Pipe with beveled spigots are furnished for changes in alignment or grade greater than can be accommodated with deflected joints.  Bevels are made by attaching the spigot to the steel cylinder at the desired angle during manufacture of the pipe.

 

 

 

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