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ST9 user interface -
System graph with dimensions -
Output document
Bolted Steel Connection
ST9
The ST9 program is used to design bolted connections in steel construction. Splice connections, beam connections (shear force connection with angle bracket) as well as butt plate joints can be designed.
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SHOW MOREMaterial
- Structural steel: S235, S275, S355, S450
- Annealed steel (S275N – S460N)
- Thermo-steel (S275M – S460M)
- Weathering steel (S235W – S355W)
- High-temperature steel (S460Q – S460QL1)
- Hollow section, hot-finished (S235H – S355H)
- Hollow section, hot-finished, fine-grain (S275NH – S460NH)
- User-defined steel
Structural system
Connections:
- Tensile splice with fish plate(s) as single-shear, double-shear or multi-shear connection
- Beam connection with angle brackets, with and without beam notch
- Flexurally rigid joint with fish plates on the web or flange
- Butt plate joint
Cross-sections:
- Beam sections or beam tie (all types of connections)
- I-sections as standard shapes
- Rolled or welded double T-sections as user-defined shapes
- Beam section or beam tie (additionally with tensile splice)
- U-sections as standard shapes or user-defined shapes
- Flat steel and wide flat steel as standard cross-sections
- Rectangular solid section as user-defined cross-section
- But straps
- Flat steel and wide flat steel as standard cross-sections
- Rectangular solid section as user-defined cross-section
- Angle brackets
- Angles with equal or unequal legs as standard shapes or user-defined cross-sections
Loads
Design internal forces for the calculation of the connection
- Nd (tensile splice)
- Vzd (beam joint)
- Myd, Nd and Vzd (flexurally rigid joint and butt plate joint)
Design
The program performs all verifications necessary for the selected type of connection in accordance with the selected design standard.
Document file formats
- Word
- Printer
Output
- Brief output
- User-defined output scope
Import options
- ASCII-file
Export options
- ASCII-file
- DXF-file
- RTF-file
Steel construction
- DIN EN 1993
- ÖNORM EN 1993
- DIN 18800
Support resources
News
ALLPLAN is releasing powerful updates for structural analysis and design with FRILO 2025
Highlights include a direct interface to ALLPLAN for more efficient reinforcement of concrete columns, the new PLUS program SLS+ for the design of splice connections, and the option of designing transverse joints to timber beams with the HO12+.
Merger of FRILO Software and DC Software with ALLPLAN successfully completed
The merger of FRILO Software GmbH and DC-Software Doster & Christmann GmbH with the ALLPLAN Group has been legally completed since July 1, 2024.
Events
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