Mezzanine additions inside an existing building depend as much on what the existing structure can carry as on the new steel frame itself.
- Confirmed intended use of the mezzanine — storage, office, retail, or mixed
- Existing building structural drawings, if available
- Racking or equipment load data, where storage is involved
- Clear height available and any existing roof/services clashes
- Whether the existing structure has been assessed for the additional load
- Which authority governs approval for the plot
This checklist is a preparation aid, not professional advice for a specific project — every project should still be reviewed individually.