While rubble masonry is considered the lowest class of stone work, it still can be used to make enduring structures and is peculiarly suited to DIY projects.
Squared-stone masonry is a method of building masonry to achieve a highly durable structure without resorting to the difficulty and labor required for ashlar.
Ashlar is the highest grade of stone work, and features extensive stone cutting and tight fitting joints. Ashlar work is difficult, but very durable due to the precision required.
Here are several methods that have been developed to repair stone bridges that consistently extend the life and usefulness of the structure.
The stones atop of a stone wall are fairly easily dislodged, especially for mortarless builds. Here are some ideas to help keep everything in place.
Though it has seen some damage, the stone Rock Creek Bridge near Latham in Butler County, Kansas by C. C. Jamison remains a favorite, scenic bridge.
Mortarless stone retaining walls have to resist the perpetual thrust of the soil they are withholding. Here are several ways this can be done.
Mortarless stone arch bridges need extra care to ensure they are not overwhelmed by foliage and that friction between stones remains high.
A key concern when maintaining a mortarless stone arch bridges is how stones can be worked loose by vibration. There are ways to prevent this.
The keystone, while generally no more important than any other arch stone, does require some special attention to fit properly.