Welcome to the Iceni Dry Stone Walling website! We hope you will enjoy browsing our website, and that you will find a lot of useful information. Dry stone is a building method by which structures are constructed from without any to bind them together. Dry stone structures are stable because of their unique construction method, which is characterized by the presence of a load-bearing façade of carefully selected interlocking stones. Dry stone technology is best known in the context of wall construction, but dry stone artwork, buildings, bridges, and other structures also exist.
A dry stone wall, also known as a dry stone dyke, drystane dyke, dry stone hedge, or rock fence, is a wall constructed from stones withoutto bind them together. As with any dry stone construction, the structural integrity arises from compressional forces and the interlocking of the stones. Such walls are used in building construction, as field boundaries, and on steep slopes as retaining walls for terracing.
Location and terminology
Terminology varies regionally. When used as field boundaries, dry stone structures often are known as dykes, particularly in. Dry stone walls are characteristic of upland areas of and where rock outcrops naturally or large stones exist in quantity in the soil. They are especially abundant in the West of Ireland, particularly . They also may be found throughout the , as in the , , , , , , the region of , , , and in the , including retaining walls used for terracing. Such constructions are common where large stones are plentiful (for example, in ) or conditions are too harsh for hedges capable of retaining livestock to be grown as reliable field boundaries. Many thousands of miles of such walls exist, most of them centuries old.
In thethey are common in areas with rocky soils, such as , , , and and are a notable characteristic of the of central as well as , where they are usually referred to as rock fences, and the in north central . The technique of construction was brought to America primarily by and immigrants. The technique was also taken to (principally western and some parts of and ) and (especially ).
Similar walls also are found in the Swiss-Italian border region, where they are often used to enclose the open space under large natural boulders or outcrops.
The higher-lying rock-rich fields and pastures in's South-Western border range of (e.g. around the mountain river of Vydra) are often lined by dry stone walls built of removed from the arable or cultural land, serving both as cattle/sheep fences and the lot's borders; sometimes also the dry stone terracing is apparent, often combined with parts of stone masonry (house foundations and shed walls) held together by a clay-cum-needles "composite" mortar.
Dry stone wall construction was known totribes in south-eastern as early at 1350 to 1500 AD. When some of the migrated west into the region of present day , they imparted their building skills to Bantu peoples who used dry stone walls to improve their fortifications.
Inin the 15th century AD, the made use of otherwise unusable slopes by building dry stone walls to create . They also employed this mode of construction for freestanding walls. Their type construction in uses the classic of polished dry-stone walls of regular shape. The Incas were masters of this technique, in which blocks of stone are cut to fit together tightly without mortar. Many junctions are so perfect that not even a knife fits between the stones. The structures have persisted in the high earthquake region because of the flexibility of the walls and that in their double wall architecture, the two portions of the walls incline into each other.
There are several methods of constructing dry stone walls, depending on the quantity and type of stones available. Most older walls are constructed from stones andcleared from the fields during preparation for agriculture but many also from stone quarried nearby. For modern walls, quarried stone is almost always used. The type of wall built will depend on the nature of the stones available.
One type of wall is called a “Double” wall and is constructed by placing two rows of stones along the boundary to be walled. The rows are composed of large flattish stones. Smaller stones may be used as chocks in areas where the natural stone shape is more rounded. The walls are built up to the desired height layer-by-layer, and at intervals, large tie-stones or through stones are placed which span both faces of the wall. These have the effect of bonding what would otherwise be two thin walls leaning against each other, greatly increasing the strength of the wall. The final layer on the top of the wall also consists of large stones, called capstones, coping stones or copes. As with the tie stones, the cap stones span the entire width of the wall and prevent it breaking apart. In addition to gates a wall may contain smaller purposely built gaps for the passage or control of wildlife andsuch as sheep. The smaller holes usually no more than 8 inches in height are called 'Bolt Holes' or 'Smoots'. Larger ones may be between eighteen and 24 inches in height, these are called a 'Cripple Hole'.
Boulder walls are a type of single wall in which the wall consists primarily of large boulders, around which smaller stones are placed. Single walls work best with large, flatter stones. Ideally, the largest stones are being placed at the bottom and the whole wall tapers toward the top. Sometimes a row of capstones completes the top of a wall, with the long rectangular side of eachperpendicular to the wall alignment.
Another variation is the “” or Welsh clawdd, which is a stone-clad earth bank topped by turf, scrub, or trees and characterised by a strict inward-curved batter (the slope of the "hedge"). As with many other varieties of wall, the height is the same as the width of the base, and the top is half the base width.
Different regions have made minor modifications to the general method of construction — sometimes because of limitations of building material available, but also to create a look that is distinctive for that area. Whichever method is used to build a dry stone wall, considerable skill is required. Selection of the correct stone for every position in the wall makes an enormous difference to the lifetime of the finished product, and a skilled waller will take time making the selection.
As with many older crafts, skilled wallers, today, are few in number. With the advent of modern wire fencing, fields can be fenced with much less time and expense using wire than using stone walls; however, the initial expense of building dykes is offset by their sturdiness and consequent long, low-maintenance lifetimes. As a result of the increasing appreciation of the landscape and heritage value of dry stone walls, wallers remain in demand, as do the walls themselves. A nationally recognised certification scheme is operated in the UK by the Dry Stone Walling Association, with four grades from Initial to Master Craftsman.