Base Flange

• Structural steel: S235, S275, S355,
• Annealed steel (S275N, S355N)
• General structural steel (St 37-2, St37-3, St52-3)
• Stainless steel (1.4301 to 1.4561)
• High-temperature steel (H II, 1.0425, 15 Mo3,1.5415)
• User-defined steel

For the base in addition:

• Reinforced concrete C12/15 to C50/60
• Reinforced concrete B10 to B35

System:

• Base (circular, rectangular, annular base plate)
• Pipe flange
• Flange (inside or outside)

Cross-sections:

• Base:
  • Circular pipes as standard sections
  • User-defined circular hollow sections
• Pipe flange:
  • Circular pipes as standard sections
  • User-defined circular hollow sections
• Flange:
  • User-defined cross-sections

Pipe flange:

• Design internal forces from axial force and moment
• Multiple combinations of internal forces can be entered

Base

• Design internal forces from axial force and moment
• Multiple combinations of internal forces can be entered

Flange:

• Entry of a tensile force or the stress in the tie member

Base:

• Screws M12; M16; M20; M22; M24; M27; M30; M36; strength classes 4.6; 5.6; 8.8; 10.9
• Tee-head bolts M24-M64, M72x6, M80x6, M90x6, M100x6; strength class 3.6
• Free entry of anchors

Pipe flange:

• Screws M12; M16; M20; M22; M24; M27; M30; M36; strength classes 4.6; 5.6; 8.8; 10.9

Flange:

• Screws M12; M16; M20; M22; M24; M27; M30; M36; strength classes 4.6; 5.6; 8.8; 10.9

The design of flange connections is performed following Petersen Stahlbau, 2^nd edition, p. 506 et seq. and p. 952 et seq.

The calculation is based on the analysis of the maximum tensile stress on the pipe and/or the tension plate.

If the service strength verification is performed, the stress calculated from the effects of actions is considered as alternating stress and compared to the permissible values for the service strength: max Δσ ≤ ΔσR

The user can pre-set these values as a reference for the service strength ΔσA of the construction detail in accordance with the notch class as per table 1 of DIN 4133 for the screws, the reinforcing steel, the base, the flange, the webs, the pipe and the annular stiffener.

The factor n for the calculation of the service strength ΔσR is determined by the alternating stress values and the boundary conditions as per DIN 4133, Annex B, Item 3 and must be specified.

ΔσR=ΔσA × n as per eq. (B.3) DIN 4133

For plate thicknesses t > 25 mm, ΔσR can be reduced in accordance with eq. (B.4) in DIN 4133.

The flange design is based on Petersen Stahlbau, 2nd edition, p. 953 et seq., “Laschenstöße – Flanschstöße”, or p. 506 et seq., “Stirnplatten und Flanschverbindungen”.

• PDF
• Word
• Printer

• User-defined

• DXF-file

• DIN 4133