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AMERICAN Earthquake Joint System

Deflection and Offset

12 Eq Section Revised
Size
(in.)
Working
Pressure1
(psi)
Earthquake
Casting
OAL
(in.)
Combined Allowable
Deflection
(degrees)
Offset per
Nominal Assembly
LL (in.)
Radius of
Curvature
(ft.)
6 350 25.63 8 35.12 150
8 350 25.93 8 35.15 150
12 350 27.60 8 35.10 150
16 350 31.75 7 31.05 174
20 350 32.20 6 26.63 203
24 350 33.70 6 26.78 204
Deflection Art Revised
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.