We request the implementation of functionality to model and include tie beams as linear structural elements within STAAD Foundation Advanced V2024 (SFA). This capability is essential to accurately represent the interaction between structural elements in combined footings, connected isolated footings, and mat foundations.
Currently, STAAD Foundation Advanced V2024 does not support modeling linear elements such as columns, pedestals, or beams. While it is expected that support for columns and pedestals will be added in future versions, there is no confirmation regarding tie beams, which are critical for realistic foundation design.
This request arises from the need to incorporate realistic structural behavior in the design of connected foundation systems. Tie beams:
Help redistribute moments and loads between footings.
Increase the overall stiffness of the system and help control differential settlements.
Are key to complying with seismic and structural codes in many countries.
As a temporary workaround, it is possible to model and analyze these beams in STAAD.Pro and then manually transfer the results into the foundation model in SFA. However, this approach introduces several limitations:
The workflow is unclear and prone to errors.
It does not properly integrate the effects of soil dead loads, self-weight of the foundation, and other gravitational effects that are inherently considered in SFA.
The disconnect between the two models prevents a coherent assessment of the beam-foundation-soil interaction.
For these reasons, we believe the implementation of this functionality is urgent and should be prioritized for future versions.