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Space Frame Steel Roofs: A More Cost-Effective Choice for Large-Span Buildings Than Concrete

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 When planning large-span buildings—from industrial warehouses and exhibition halls to transportation hubs—selecting the right roof system is not just a structural decision, but a financial one that impacts budgets for decades. Concrete has long been a traditional option for such projects, valued for its familiarity rather than its long-term efficiency. However, space frame steel roofs have emerged as a superior alternative, delivering cost savings that extend far beyond upfront expenses and align with the practical needs of modern large-span construction. The myth that concrete is the cheaper choice often stems from a narrow focus on material costs alone. While concrete may have a lower price per ton at first glance, this ignores the full scope of expenses that come with concrete roof installation. Space frame steel roofs, by contrast, are engineered for efficiency at every stage, starting with their lightweight and modular design. Unlike concrete roofs, which require massive, rei...

Features of truss

 



From the perspective of material layout (or distribution), the truss can be regarded as a latticed beam as a whole, and its overall mechanical performance is similar to that of the beam. In the detail structure, each rod is used to re-direct the force flow (the nodes between the rods are not overlapped, and the bending moment cannot be transferred), and the overall layout is basically consistent with the main stress trace. Each rod is a secondary force rod, which is only subjected to tension and compression

Truss, especially space pipe truss, is often made into arch. However, at this time, the arch is not a pure pressure arch, and the whole arch is still dominated by bending. We can also consider it as a curved beam in a certain sense. Of course, arch camber can increase the span capacity, and the role of "axial force" in the "beam" can not be ignored at this time, but in most cases, especially when the rise-span ratio is small, the bending is still the main part.

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