24
INS
TALL
AT
O
RE
U
TENTE
MANU
TENT
O
RE
TYPE OF DUCT
Resistance
Factor
(R)
Equivalent
length in metres
of concentric pipe
Ø 60/100
Equivalent
length in metres
of a Ø 80 pipe
Equivalent
length in metres
of a Ø 60 pipe
Equivalent
length in metres
of concentric pipe
Ø 80/125
Concentric pipe Ø 60/100
m 1
Intake and
Exhaust 6.4
m 1
Intake m 7.3
Exhaust m 1.9
m 3,0
Exhaust m 5.3
90° concentric bend Ø 60/100
Intake and
Exhaust 8.2
m 1,3
Intake m 9.4
Exhaust m 2.5
m 3,9
Exhaust m 6.8
Concentric bend 45°
Ø 60/100
Intake and
Exhaust 6.4
m 1
Intake m 7.3
Exhaust m 1.9
m 3,0
Exhaust m 5.3
Terminal complete with
concentric horizontal
intake-exhaust Ø 60/100
Intake and
Exhaust 15
m 2,3
Intake m 17.2
Exhaust m 4.5
m 7,1
Exhaust m 12.5
Concentric horizontal intake-
exhaust terminal Ø 60/100
Intake and
Exhaust 10
m 1,5
Intake m 11.5
Exhaust m 3.0
m 4,7
Exhaust m 8.3
Terminal complete with
concentric vertical
intake-exhaust Ø 60/100
Intake and
Exhaust 16.3
m 2,5
Intake m 18.7
Exhaust m 4.9
m 7,7
Exhaust m 13.6
Concentric vertical
intake-exhaust terminal
Ø 60/100
Intake and
Exhaust 9
m 1,4
Intake m 10.3
Exhaust m 2.7
m 4,3
Exhaust m 7.5
Pipe Ø 80 m 1
Intake 0.87
m 0,1
Intake m 1.0
Exhaust m 0.4
m 0,4
m 0,5
Exhaust 1.2
m 0,2
Exhaust m 1.0
Complete intake terminal
Ø 80 m 1
Intake 3
m 0,5
Intake m 3.4
Exhaust m 0.9
m 1,4
Intake terminal Ø 80
Exhaust terminal Ø 80
Intake 2.2
m 0,35
Intake m 2.5
Exhaust m 0.6
m 1
m 0,9
Exhaust 1.9
m 0,3
Exhaust m 1.6
Bend 90° Ø 80
Intake 1.9
m 0,3
Intake m 2.2
Exhaust m 0.8
m 0,9
m 1,2
Exhaust 2.6
m 0,4
Exhaust m 2.1
Bend 45° Ø 80
Intake 1.2
m 0,2
Intake m 1.4
Exhaust m 0.5
m 0,5
0,7
Exhaust 1.6
m 0,25
Exhaust m 1.3
Pipe Ø 60 m 1 for ducting
Exhaust 3.3
m 0,5
Intake 3.8
Exhaust m 1.0
m 1,5
Exhaust 2.7
Bend 90° Ø 60 for ducting
Exhaust 3.5
m 0,55
Intake 4.0
Exhaust m 1.1
m 1,6
Exhaust 2.9
Reduction Ø 80/60
Intake and
Exhaust 2.6
m 0,4
Intake m 3.0
Exhaust m 0.8
m 1,2
Exhaust m 2.1
Terminal complete with
exhaust
vertical Ø 60 for ducting
Exhaust 12.2
m 1,9
Intake m 14
Exhaust m 3.7
m 5,8
Exhaust m 10.1
