An arch supports weight by controlling the forces at play in such a manner that they are actually used to strengthen the arch’s spanning abilities.
The pros and cons and design logic behind multi-span stone arch bridges. Multi-span arch bridges are often necessary for spanning wide streams.
The basic process for determining where and how to build a stone arch bridge, with the DIY enthusiast kept specifically in mind.
Stone arch bridges, like any other bridge, need to be designed with the properties of the stream they are to span kept in mind to ensure long life.
The thickness of an arch is determined by the arch’s type, span and masonry, with thicker arches generally being both forgiving and stronger.
While the stone for an arch bridge is generally reflective of local geology, different types of stone perform better in different parts of the bridge.
Making the wedge-shaped stones necessary to form an arch can be challenging, often prompting builders to utilize easier ways to “turn” stone arches.
Many stone bridges were built with shallow foundations, often with various tricks added past and present to try to improve their stability.
There is a basic process involved in building a stone arch bridge based on the fact that the arch cannot stand until all the arch stones are in place.
The arch is unsurpassed as the most practical method of spanning gaps with stone, and its workings are surprisingly simple and intuitive.