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Bolted L-Flange
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Kitesurf Forecast
ⓘ
L flange design to DNV-ST-0126 & IEC 61400-6 (2025). Units in N and mm only.
Assessment type
Assess
Design (optimise)
Foundation geometry
Outer diameter
Wall thk
L-flange geometry
Height (t)
Length (radial)
Bolt size
M64
M72
M80
M90
M100
Optional
If blank, bolts no. is maximised; b* minimised for tensioner tool req's (see "Flange details" for values)
No. of bolts
b*
Materials
Bolt steel grade
10.9
8.8
6.8
Flange steel grade
S355
S420
S460
Monopile steel grade
S355
S420
S460
ULS Loading
Loads should be factored for ULS. No further load factors are applied.
Axial force
Bending moment
Plot options
X-axis vary
flange_height (t)
flange_length
n_bolts
Optimisation (flange designer)
Target utilisation
Min bolt size
M64
M72
M80
M90
M100
Maintain a/b <= 1.25
Submit
Results
Flange details
Optimal flange geometries (sorted by mass ascending)