TABLE 3A
Vibration Isolator Types and Minimum Static Deflection
(MSD, mm) for 100-200 mm slab on grade and column supported.
Column
Slab on earth
9.1-12 meters
12.1-15 meters
Spacing
and 0-9 meter
Equipment
Type
MSD
Type
MSD
Type
MSD
_________
(Note (1))
(Note (1))
(Note (1))
Floor Mounted
Units
Up to 3 3/4 kW
S
25.40
S
25.40
S
25.40
Over 3 3/4 kW
Up to 400 rpm
S-R
44.45
S-R
44.45
S-R
63.50
Over 401 rpm
S-R
25.40
S-R
38.10
S-R
63.50
Centrifugal
Blowers
175 - 224 rpm
S-B
120.65
S-B
120.65
S-B
120.65
225 - 299 rpm
S-B
95.25
S-B
120.65
S-B
120.65
300 - 374 rpm
S-B
69.85
S-B
114.30
S-B
120.65
375 - 499 rpm
S-B
63.50
S-B
88.90
S-B
114.30
Over 500 rpm
S-B
44.45
S-B
63.50
S-B
88.90
Tubular
Centrifugal
and Axial Fans
(Note (2))
Suspended
H with deflection specified for centrifugal
blowers
Floor Mounted
S-B with deflections specified for
Arrangements 1 & 9
centrifugal blowers
Utility Fans
(Note (2))
Suspended
H with deflections specified for
centrifugal blowers but not to exceed
69.85 mm
Floor-Mounted
S-R with deflections not specified for
centrifugal blowers but not to exceed
69.85 mm
High Pressure Fans
HR recommended for minimizing undesirable
(Over 1494 Pa
thrust effects
Static Pressure)
and Other
Machineries
Producing Thrust
(Note (2))
SECTION 15070N
Page 34
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