Resistance factor and equivalent length tables.
ES
DUCT TYPE
TR
RO
Concentric pipe Ø 60/100 length 1 m
IE
90° concentric bend Ø 60/100
45° concentric bend Ø 60/100
Complete concentric horizontal
intake-exhaust terminal Ø 60/100
Concentric horizontal
intake-exhaust terminal Ø 60/100
Concentric pipe Ø 80/125 length 1 m
90° concentric bend Ø 80/125
45° concentric bend Ø 80/125
Complete concentric vertical intake-exhaust termi-
nal Ø 80/125
Concentric vertical
intake-exhaust terminal Ø 80/125
98
Equivalent
length in metres of
Resistance
concentric pipe
factor
Ø 60/100
(R)
Intake
and
1 m
exhaust
16.5
Intake
and
1.3 m
exhaust
21
Intake
and
1 m
exhaust
16.5
Intake
and
2.8 m
exhaust
46
Intake
and
1.9 m
exhaust
32
Intake
and
0.4 m
exhaust
6
Intake
and
0.5 m
exhaust
7.5
Intake
and
0.4 m
exhaust
6
Intake
and
2.0 m
exhaust
33
Intake
and
1.6 m
exhaust
26.5
Equivalent
Equivalent
length in metres of
length
concentric pipe
in metres of pipe
Ø 80/125
Ø 80
Intake
7.1 m
2.8 m
Exhaust
5.5 m
Intake
9.1 m
3.5 m
Exhaust
7.0 m
Intake
7.1 m
2.8 m
Exhaust
5.5 m
Intake
20 m
7.6 m
Exhaust
15 m
Intake
14 m
5.3 m
Exhaust
10.6 m
Intake
2.6 m
1.0 m
Exhaust
2.0 m
Intake
3.3 m
1.3 m
Exhaust
2.5 m
Intake
2.6 m
1.0 m
Exhaust
2.0 m
Intake
14.3 m
5.5 m
Exhaust
11.0 m
Intake
11.5 m
4.4 m
Exhaust
8.8 m