What’s on the Choosing a Span System poster
A 7-row table: System · Typical span.
Indicative economic spans for early scheme design only.
- Timber joists — up to about 5 m
- Concrete flat slab — 6 to 9 m
- Composite steel and metal deck — 6 to 15 m
- Post-tensioned concrete — 9 to 18 m
- Steel trusses — 15 to 45 m
- Space frames — 30 to 90 m
- Cable and membrane — over 60 m
Educational reference. Economic ranges vary with loading, market and fire requirements; an engineer must confirm any span.
Questions about the Choosing a Span System poster
- What’s on the Choosing a Span System poster?
- A 7-row table: System · Typical span. Indicative economic spans for early scheme design only. Timber joists — up to about 5 m; Concrete flat slab — 6 to 9 m; Composite steel and metal deck — 6 to 15 m; Post-tensioned concrete — 9 to 18 m; Steel trusses — 15 to 45 m; Space frames — 30 to 90 m; Cable and membrane — over 60 m. Educational reference. Economic ranges vary with loading, market and fire requirements; an engineer must confirm any span.
- Who is the Choosing a Span System poster for?
- Choosing a Span System belongs to the Architecture section rather than to a school year, because design is not something one grade owns. Anyone learning structure can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Choosing a Span System poster?
- Use it when massing. Picking a span you cannot build wastes a week of plan drawing. A wall chart earns its place by being glanceable from where the work is happening, so Choosing a Span System belongs on the wall where that design work actually happens, within glancing distance, rather than filed away.
- What other posters go with Choosing a Span System?
- Arches, Vaults and Domes, How a Beam Works and Cantilevers sit alongside Choosing a Span System in the Architecture section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Arches, Vaults and DomesHow a Beam WorksCantilevers
- Is the Choosing a Span System poster free to download and print?
- Yes. Choosing a Span System downloads as a free PDF with no account, no email and no watermark, like everything else in the Architecture section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Choosing a Span System poster print at?
- Choosing a Span System is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Choosing a Span System loses nothing.Printing guide
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