Joint Deflection

 

Washout - Amherst, Nova Scotia, 1999.

The pipe stayed in operation despite over deflection of the joints.

 

PUSH-ON JOINT


Pipe
Size
Y
Deg.
Deflection
X
Approx. Radius
of Curve
in mm deg in mm ft m
4 100 21* 533 230* 70
6 150 19 483 205 62
8 200 19 483 205 62
10 250 19 483 205 62
12 300 19 483 205 62
14 350 15 381 260 79
16 400 15 381 260 79
18 450 11 280 340 104
20 500 11 280 340 104
24 600 11 280 340 104
30 750 11 280 340 104
36 900 11 280 340 104
*20 ft. length

 

Demonstration of the superior flexibilty of Ductile Iron Pipe.

 

MECHANICAL JOINT


Pipe
Size
Y
Deg.
Deflection
X
Approx. Radius
of Curve
in mm deg in mm ft m
4 100 8° 18' 35* 890 140* 43
6 150 7° 7' 27 690 145 44
8 200 5° 21' 20 510 195 59
10 250 5° 21' 20 510 195 59
12 300 5° 21' 20 510 195 59
14 350 3° 35' 13.5 340 285 87
16 400 3° 35' 13.5 340 285 87
18 450 11 280 340 104
20 500 11 280 340 104
24 600 3° 23' 9 230 450 137
*20 ft. length