Siemens COMOS User Manual

Bolt length calculation for the normal bolted connection
Example: Two flanges with gasket and normal bolted connection
BL = Bolt length
The bolt length is calculated as follows:
1.
The clamping length is calculated.
2. The bolt parameters are determined.
3. The theoretical bolt length is calculated.
Calculation of the clamping length
The clamping length is determined from the 3D model on the basis of topology.
Formula: Clamping length = Sheet thickness + gasket height + sheet thickness
● Gasket height: Is read out from the properties of the gasket, "3D geometry" tab, "Length
(L)" attribute.
● Sheet thickness: Is read out from the properties of the flange, "Connector <counter>" tab,
"Sheet height" attribute.
If the attribute is missing or blank, the internal calculation formula is used to determine
which basic table the sheet thickness is read out from.
Database reference
13.2 Algorithm for calculating the screw length
PipeSpec Designer
Operating Manual, 09/2014, A5E32076948-AA 147

Siemens COMOS Specifications

General

Manufacturer	Siemens
Description	COMOS is plant engineering software for the process industry. It manages plant projects and documentation. It covers the entire plant lifecycle from engineering and design to operation and maintenance.
Functionality	Plant design and engineering
Integration	Integrates with Siemens TIA Portal, SIMATIC PCS 7, and other third-party systems
Data Management	Centralized data management
Modules	Includes modules for process engineering, electrical engineering, instrumentation, and automation
Collaboration	Supports multi-disciplinary team collaboration with role-based access
Documentation	Automated generation of documentation (e.g., P&IDs, loop diagrams, instrument lists), document management, version control.
Customization	Highly customizable to meet specific project requirements and industry standards. Allows for scripting and API integration.
Industry Standards	ISO, IEC