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TYPE OF DUCT
Concentric pipe
Ø 60/100 m 1
90° concentric bend
Ø 60/100
45° concentric bend
Ø 60/100
Terminal complete with
concentric horizontal
intake-exhaust
Ø 60/100
Concentric horizontal
intake- exhaust
terminal Ø 60/100
Terminal complete with
concentric vertical
intake-exhaust
Ø 60/100
Concentric vertical
intake-exhaust terminal
Ø 60/100
Pipe Ø 80 m 1
Complete intake
terminal Ø 80 m 1
Intake terminal Ø 80
Exhaust terminal Ø 80
90° bend Ø 80
45° bend Ø 80
Pipe Ø 60 m 1 for
ducting
90° bend Ø 60 for
ducting
Reduction Ø 80/60
Terminal complete with
vertical exhaust Ø 60 for
piping
Equivalent
Resistance
length in m
factor
of concentric pipe
(R)
Ø 60/100
Intake m 6.4
m 1
Exhaust m 6.4
Intake m 8.2
m 1,3
Exhaust m 8.2
Intake m 6.4
m 1
Exhaust m 6.4
Intake m 15
m 2,3
Exhaust m 15
Intake m 10
m 1,5
Exhaust m 10
Intake m 16.3
m 2,5
Exhaust m 16.3
Intake m 9
m 1,4
Exhaust m 9
Intake m 0.87
m 0,1
Exhaust m 1.2
m 0,2
Intake m 3
m 0,5
Intake m 2.2
m 0,35
Exhaust m 1.9
m 0,3
Intake m 1.9
m 0,3
Exhaust m 2.6
m 0,4
Intake m 1.2
m 0,2
Exhaust m 1.6
m 0,25
Exhaust m 3.3
m 0,5
Exhaust m 3.5
m 0,55
Intake m 2.6
m 0,4
Exhaust m 2.6
Exhaust m 12.2
m 1,9
Equivalent
Equivalent
length in m
length in m
of pipe Ø 80
of pipe Ø 60
Intake m 7.3
Exhaust m 1.9
Exhaust m 5.3
Intake m 9.4
Exhaust m 2.5
Exhaust m 6.8
Intake m 7.3
Exhaust m 1.9
Exhaust m 5.3
Intake m 17.2
Exhaust m 4.5
Exhaust m 12.5
Intake m 11.5
Exhaust m 3.0
Exhaust m 8.3
Intake m 18.7
Exhaust m 4.9
Exhaust m 13.6
Intake m 10.3
Exhaust m 2.7
Exhaust m 7.5
Intake m 1.0
Exhaust m 0.4
Exhaust m 1.0
Intake m 3.4
Exhaust m 0.9
Intake m 2.5
Exhaust m 0.6
Exhaust m 1.6
Intake m 2.2
Exhaust m 0.8
Exhaust m 2.1
Intake m 1.4
Exhaust m 0.5
Exhaust m 1.3
Intake m 3.8
Exhaust m 1.0
Exhaust m 2.7
Intake m 4.0
Exhaust m 1.1
Exhaust m 2.9
Intake m 3
Exhaust m 0.8
Exhaust m 2.1
Intake m 14
Exhaust m 3.7
Exhaust m 10.1
Equivalent
length in m
of concentric pipe
Ø 80/125
m 3,0
m 3,9
m 3,0
m 7,1
m 4,7
m 7,7
m 4,3
m 0,4
m 0,5
m 1,4
m 1
m 0,9
m 0,9
m 1,2
m 0,5
m 0,7
m 1,5
m 1,6
m 1,2
m 5,8
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