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AMERICAN Earthquake Joint System

Standard Dimensions

6", 8", 12", 16", 20", and 24" Diameters

12 Eq Section Revised
Size
(in.)
Working
Pressure
(psi)1
Earthquake
Casting
OAL
(in.)
Earthquake
Casting
LL
(in.)
Socket
Depth
(in.)
Thickness
(in.)
Bell
OD
(in.)
Spigot
OD
(in.)
6 350 25.63 10.53 15.10 0.43 9.54 6.90
8 350 25.93 10.71 15.22 0.45 11.78 9.05
12 350 27.60 11.38 16.22 0.49 16.34 13.20
16 350 31.75 14.31 17.44 0.70 20.54 17.40
20 350 32.20 15.02 17.18 0.80 25.20 21.60
24 350 33.70 16.44 17.26 0.89 29.46 25.80

Laying lengths for AMERICAN Earthquake Joint system assembled on nominal2 lengths of AMERICAN Flex-Ring Joint Pipe

Size
(in.)
Casting
Fully
Homed
Casting at
Midpoint of
Insertion
Casting
Fully
Extended
Casting
Weight
(lbs.)
6 20’-9.57" 21’-0.32" 21’-2.74" 104
8 20’-9.75" 21’-0.54" 21’-2.95" 140
12 20’-9.34" 21’-0.21" 21’-2.65" 263
16 20’-11.79" 21’-2.80" 21’-5.63" 419
20 21’-0.02" 21’-2.76" 21’-5.07" 610
24 21’-1.44" 21’-4.18" 21’-6.56" 779

Flex-Ring Fittings to be utilized in an AMERICAN Earthquake Joint system

Size
(in.)
Min Pull
Apart
Resistance
Elongation
at Full
Insertion 3 
Fitting
Joint
Deflection
ISO 16134
Rating
6 102,000 lbs 0.31% 5 Degrees A,S3,M3
8 136,000 lbs 0.31% 5 Degrees A,S3,M3
12 204,000 lbs 0.32% 5 Degrees A,S3,M3
16 272,000 lbs 0.53% 3.75 Degrees A,S3,M3
20 340,000 lbs 0.53% 3.5 Degrees A,S3,M3
24 408,000 lbs 0.53% 3 Degrees A,S3,M3

Note: Consult your AMERICAN representative for ratings in diameters not complimentary to our offered AMERICAN Earthquake Joint system sizes.

1.) Working pressure is the maximum pressure rating of the joint and is based on its capability to resist thrust due to internal pressure. If higher working pressure is required, contact AMERICAN.
2.) Laying length is nominal 20’. Where exact lengths are required, contact AMERICAN.
3.) Elongation % when fitting is used with a 20' nominal length of pipe.