EQUIPMENT
ON GRADE
20FT FLOOR SPAN
30FT FLOOR SPAN
40FT FLOOR SPAN
50FT FLOOR SPAN
BASE
ISOL
MIN
BASE
ISOL
MIN
BASE
ISOL
MIN
BASE
ISOL
MIN
BASE
ISOL
MIN
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
UP TO
---
---
---
---
D,L,
---
---
D,L,
---
---
D,L,
---
---
D,L,
---
10 HP
W
W
W
W
I
S
1.0
I
S
1.0
I
S
1.7
I
S
1.7
I
S
1.7
15 HP
BASE
THRU
MOUNTED
40 HP
I
S
1.0
I
S
1.0
I
S
1.7
I
S
2.5
I
S
2.5
50 HP
&
OVER
ROOF VENTILTORS
ABOVE OCCUPIED AREAS:
5 HP & OVER
---
---
---
CB
S
1.0
CB
S
1.0
CB
S
1.0
CB
S
1.0
CENTRIFUGAL BLOWERS
UP TO 50 HP:
UP TO 200 RPM
B
N
0.3
B
S
2.5
B
S
2.5
B
S
3.5
B
S
3.5
201 - 300 RPM
B
N
0.3
B
S
1.7
B
S
2.5
B
S
2.5
B
S
3.5
301 - 500 RPM
B
N
0.3
B
S
1.7
B
S
1.7
B
S
2.5
B
S
3.5
501 RPM & OVER
B
N
0.3
B
S
1.0
B
S
1.0
B
S
1.7
B
S
2.5
60 HP & OVER:
UP TO 300 RPM
B
S
1.7
I
S
2.5
I
S
3.5
I
S
3.5
I
S
3.5
301 - 500 RPM
B
S
1.7
I
S
1.7
I
S
2.5
I
S
3.5
I
S
3.5
501 RPM & OVER
B
S
1.0
I
S
1.7
I
S
1.7
I
S
2.5
I
S
2.5
5-5
HVAC DESIGN MANUAL
SUPPORT DATA
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