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Free flow-rate for OVOIDAL cross section pipes
The app returns infos about draining area for different types of pipes according to the slot type and slot geometry
Pipe type
EuroSewer
EuroSewer
Normopipe
Normopipe
Calc libero
Reference norm
UNI EN 13476-3
UNI EN 13476-3
UNI EN 1401
UNI EN 12666
Free calc.
Raw material
PE
PE
PVC-U
PE
DN/OD
DN/ID
DN/OD
DN/OD
D ext
Nominal diameter
160
200
250
315
400
500
630
800
1000
1200
300
400
500
600
110
125
160
200
250
315
400
500
630
800
110
125
160
200
250
315
400
500
630
110
125
160
200
250
315
400
500
630
SN
(Kpa)
4
8
4
8
2
4
8
2
4
8
SDR
(
)
Minimum wall thickness
e
min
(mm)
Maximum wall thickness
e
max
(mm)
Internnal diameter
Di
(mm)
Slot type
C2
C3
C4
T3
T4
T6
C2
C3
C4
T3
T4
T6
C2
C3
C4
T3
T4
T6
C2
C3
C4
T3
T4
T6
C2
C3
C4
T3
T4
T6
Slot pattern
S
H
S
H
S
H
S
H
S
H
Number of slot in a pitch
""
""
""
""
""
Slot pitch
b
(mm)
Slot width
a
(mm)
Slot thickness
w
(mm)
0,5
1
2
4
5
7
10
0,5
1
2
4
5
7
10
0,5
1
2
4
5
7
10
0,5
1
2
4
5
7
10
0,5
1
2
4
5
7
10
Draining area
(cm
2
/m)
Draining area %
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