Erratum to ANSI/AWWA C208-07

Standard for

Dimensions for Fabricated Steel Water Pipe Fittings(November 2009)

1. Replace Fig. 5, Reducing Elbow, with the new Fig. 5, which includes corrections to symbols and definitions used in the figure.

Copyright 2010 American Water Works Association. All Rights Reserved.

Figure 5 Reducing Elbow

n equaldivisions

R

P.T.P.C

.

D

T

n

Point ofIntersection

D 2

D 1

Z1

r 1

r 3

Y3

r 5

D 4Y5

D6

r n

Z n

= Angle of intersection = Inclination of a right circular coneR = Radius of bendn = number of miter cuts 2

D = Inside diameter of large pipeD = Inside diameter of small pipe

sin =

r =

r =

D =

where x = number of divisions from P.C. to point under consideration.

1n

2(n-2)R(tan) D D1

1D2

n

1

n

D 2(x1)R(tan)(sin)cos

1x

sin2cos2+cos

r (sin)cos2+cos 1

x

n

1

D2

tan =

Z =

Z =

Y =

T = R tan

r (sin)cos2+cos

n

r (sin )cos

x

2

= n

rx= r1(x1)R(tan)(sin)

n

Copyright 2010 American Water Works Association. All Rights Reserved.