35–45 m Span
45 m clear span for large industrial, commercial and special-purpose facilities; special steel and high-strength bolted plates.
- Series
- CFS-S4
- Span
- up to 45 m clear span

S4 is the step where span changes the material. At forty-five metres, increasing truss depth alone is no longer enough; the connection points come under load, and that is where superior-strength special steel members and high-strength bolted connection plates take over.
At this scale demountability becomes a distinct engineering subject. If a hangar or exhibition building is to be re-erected on another site, the connection detail must be designed so that dismantling keeps material loss to a minimum — something a welded system cannot offer.
If a clear span beyond forty-five metres is required, the series changes: CFS-S5 reaches sixty metres and the barrel vault systems reach eighty.
Key Advantages
- Large column-free spans
- High-strength special steel
- Durable bolted connection components
- Straightforward erection
- Can be dismantled and reassembled
- Adaptable to different large-scale facilities
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