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Step-stone bridge

 
Wikipedia: Step-stone bridge
 
Step-Stone Bridge
In a Japanese-style garden
In a Japanese-style garden
Ancestor: None, this is one of the few foundational types, but see also: ford (crossing).
Related: None
Descendant: Clapper bridge, log bridge
Carries: Pedestrians
Span range: Has no spans, but must be spaced to allow sufficient water flow and a comfortable step, or perhaps a reasonable leap
Material: Selected stone
Movable: No
Design effort: Low
Falsework required: No

A step-stone bridge is a simple means for a pedestrian to cross a watercourse during periods of low flow while keeping feet and (particularly) footwear dry. This type, along with the log bridge are likely the oldest bridge types. Unlike all other bridges, this bridge has no spans. Water is allowed to course between the stones that form the steps. Step-stone bridges are often seen in gardens in China and Japan. It is one of several principal types found in such gardens. Sometimes one will find these as informal crossings of small streams when hiking, as they are often built by hikers during the drier seasons and are subject to being swept away (or at least disarranged) during periods of high, fast water.

When step-stone bridges are in gardens open to the public, the step-stones are usually quarried from rough blocks and may be smoothed on their upper surface by a stone mason or topped with a smooth concrete treading surface.

A rough creek crossing

See also

References


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Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Step-stone bridge" Read more