Clear-span volume
Large-span structural systems prioritise open floor area and roof volume, then coordinate enclosure, doors, services and internal fit-out around that space.
International Decision Centre / Global
A large unobstructed volume and a room-based building solve different planning problems even when both use prefabricated manufacturing.

Direct answer
Use a clear-span structure when the project needs a large unobstructed interior for sport, storage, events, equipment or assembly. Use modular building systems when the brief is organised around rooms, accommodation, offices, ablutions or repeatable enclosed spaces.
Project decision
Use these points to structure the first project conversation. Final suitability stays tied to the actual site, selected system and local project team.
Large-span structural systems prioritise open floor area and roof volume, then coordinate enclosure, doors, services and internal fit-out around that space.
Modular building systems prioritise repeatable room modules, service zones and floor-plan organisation, often making accommodation or office programmes easier to standardise.
Large precincts can combine a clear-span hall with modular changing, office, ablution or support buildings if interfaces are planned early.
Comparison matrix
Use this as an early project-screening matrix. Final suitability depends on the exact system, site, configuration and project requirements.
| Factor | Clear-span structure | Modular building |
|---|---|---|
| Internal space | Large open volume | Room / module based |
| Columns | Minimised internally | Module layout controls |
| Typical use | Sport, warehouse, event, hangar | Accommodation, office, changing, community |
| Fit-out | Project coordinated | More repeatable |
| Hybrid potential | Can pair with modules | Can support hall / precinct |
Project brief
Frequently asked
No. The useful choice depends on the project outcome, site conditions, scale, local work, operating expectations, maintenance and required technical evidence.
No. Apollo uses a manual project-brief and quotation process so product family, quantity, destination, freight, configuration and project interfaces are reviewed before pricing.
Apollo is primarily supply-only. Local engineering, approvals, foundations, services, installation and other site work remain with the appointed local project team unless a written scope states otherwise.
Next step
Send the site, dimensions, intended use, quantities and known local requirements. Apollo will review the relevant product pathway and keep local engineering, approvals and site-work responsibilities explicit.