Man L23/30DF, Project Manual

Page: 331 / 392

Earthquake scales and intensity values
Measured at 5 Hz
Richter scale Ground acceleration
[mm/s 2 ]
Ground velocity [mm/s] Ground shift [mm]
4.2
4.8
5.3
5.9
6.4
7.0
250 - 500
500 - 1000
1000 - 2000
2000 - 4000
4000 - 8000
8000 - 16000
8 - 16
16 - 32
32 - 64
64 - 127
127 - 254
254 - 508
0.3 - 0.5
0.5 - 1.0
1.0 - 2.0
2.0 - 4.0
4.0 - 8.0
8.0 - 16.0
Common values for sandwich mounting systems VRD 35 S1 – 55°
With landbased generating sets
Richter scale Input ground accel-
eration [g]
Natural frequencies
horizontal [Hz]
Output transmitted
shock on generating
set [g]
Horizontal shock
Displacement on
mounts [mm]
5.9
6.4
7.0
0.2 - 0.4
0.4 - 0.8
0.8 - 1.6
1.8 - 2.3
1.8 - 2.3
1.8 - 2.3
0.07 - 0.19
0.15 - 0.37
0.29 - 0.75
4.4 - 11.2
8.8 - 22.5
17.6 - 44.9
The output transmitted shock [g] and horizontal shock displacements [mm] are calculated by half sine shock
puls.
MAN Diesel & Turbo
1699989-9.5
Page 3 (5)
Resilient mounting system for landbased generating
sets
B 20 00 0
L27/38S, L21/31S, L16/24S
2015.05.11