Commercial and public
Community facility with long-span roof
A single-volume public building with a clear-span roof, used here to demonstrate how commercial and public projects are presented.
- Role
- Structural engineer
- Structural system
- Long-span steel roof trusses on masonry and concrete supports
- Structure type
- Clear-span public assembly building
- Roof system
- Steel trusses
- Stage
- Design through construction
Scope
- Roof structure design and analysis
- Supporting wall and footing design
- Coordination with architectural and services documentation
- Construction-phase support
The brief
A public assembly building needs an uninterrupted floor area, which pushes the roof span well past what conventional framing handles economically, and it carries a higher importance level than a comparable private building.
Structural approach
Long-span steel trusses carry the roof to perimeter supports, keeping the floor free of columns. Truss depth was set against both the structural requirement and the architectural ceiling line, and services routing was coordinated through the truss zone rather than below it.
Coordination
The structural set was checked against the architectural and services documentation at each issue, so that penetrations, plant locations and ceiling heights were resolved on paper rather than on site.