Tag: Forces
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Segmental Arch Bridge Designs
Segmental arches require care in laying the arch, but can also be used to great advantage, particularly where the stream being spanned is a rock-walled gorge.
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The Stone Slab Bridge
Stone slab culverts represent an early and simple way to bridge a gap with stone. However, due to the inherent structural weakness of this design, only small spans are practical, demonstrating the advantages of the arch.
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Load Distribution Within the Arch
The arch tends to gradually spread narrow loads over a larger area as the forces travel though the arch. In this post we outline why this is and some implications of this fact.
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The Spandrel Wall and the Arch
Stone arch bridges feature spandrel walls in order to create a reasonably level roadway. These walls, however, are also an important structural part of the bridge, allowing it to carry heavier loads.
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The Timeless Stone Arch Bridge
The stone arch bridge remains a form of construction that has never been equaled. Here are some considerations in favor of stone bridges even with modern advances in structures and materials.
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Structural Considerations of Low-Rise Arches
Low-rise arches make for daring designs with minimal “humps” in the road. However, there are certain structural considerations that need to be seriously taken into account when designing a low-rise arch.
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Pros and Cons of Mortarless Masonry
Mortarless masonry has several construction advantages over its mortared counterparts. However, with these advantages come a greater precision and skill required for long-term durability.
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The Middle-Third Rule
The middle-third rule is a classic rule in masonry design. In this post we explain what this rule is, why it is associated with stability, and how it is derived, as well as its limitations.
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Masonry: Always Moving
Gravity, aided by natural forces like freeze/thaw cycles, is always at work on a masonry structure either pushing it more firmly in place or pulling it apart. By working with these forces, better structures can be built.