Richard 2: Do you want to turn it? Both can stand vertically or slope at an angle usually downhill. Lay a stone at each end so that the string can be set tightly at the required height usually about 11 inches. The wall is then continued on until it is leveled off at the desired height. If you try and put one in like that, you’ll force them apart. Speaker 1: All stones should be carefully sorted into the different types needed for each stage of the wall and laid in rows close by. The voids between the facing stones are carefully packed with smaller stones (filling, hearting). A wall's style and method of construction will vary, depending on the type of stone available, its intended use and local tradition. For foundation, there are footings or footers. As more courses are added, the tie rocks will become firmly embedded in the wall. Big, small, retaining, free-standing... love 'em all. Relatively large standing stones are also positioned on the edifice's corners. I had after all been working in an office for some years, but when I moved to the country and had a house with many walls on it, I found that I had to get them repaired and I didn’t know how to do it. Richard: Only if there’s a big hallow on them. This cross section of a wall shows the key points. Good luck. Richard: Exactly. If you lay them in that way, they tie and bind into the packing in the middle of the wall very much better than if they’re turned long ways. Speaker 1: Richard Tufnell is a master craftsman and instructor for the Dry Stone Masonry Institute of America, a non-profit corporation dedicate to preserving the craft, its structures and history.  Dry stone structures are stable because of their construction method, which is characterized by the presence of a load-bearing façade of carefully selected interlocking stones. Richard: It’s not on my farm. Whatever the style of coping, the stones must be locked off so that there is no sideways movement when the copes are shaken. You’ll appreciate of course with a wall head because of the slight irregularities of the stones. Dry stone wall building is one of the oldest construction methods known to mankind. [further explanation needed][clarification needed], The dry stone walling tradition of Croatia was added to the UNESCO Representative List of the Intangible Cultural Heritage of Humanity in November 2018, alongside those of Cyprus, France, Greece, Italy, Slovenia, Spain and Switzerland. To make it of even height, we’ll just put another pin under there. In County Mayo, Ireland, an entire field system made from dry stone walls, since covered in peat, have been carbon-dated to 3800 BC. Their profiles match the cross section of the wall and they must have straight edges. The changing construction of agricultural walls on the island of Gozo", "An experimental and analytical study of dry-stone retaining walls", The Dry Stone Wall Association of Ireland, Dry Stone Walling Association of Great Britain, Current Archaeology notes on Working Holidays repairing dry stone walls, Project Alpter, Terraced Landscapes of the Alpine Arc, International Union of Bricklayers and Allied Craftworkers, Operative Plasterers' and Cement Masons' International Association, https://en.wikipedia.org/w/index.php?title=Dry_stone&oldid=986981584, Articles needing additional references from August 2017, All articles needing additional references, Wikipedia articles needing clarification from May 2016, Articles containing Croatian-language text, Creative Commons Attribution-ShareAlike License. CONSULTATION & PLANNING. Skilled dry-stone walling professionals have created taller walls and even the entire temples in the ancient era of civilization. Speaker 2: Richard, are we going to build this wall exactly like it is here or are we going to build it with a batter? If a wall is of particular historic importance, then you should try to maintain archaeological authenticity. Absolutely fantastic. The reason is that walls do tend to settle a little bit over time. Dry stonewalls are mainly built as fencing to keep animals in, to mark out a garden and for terracing sloping gardens. Fantastic. Speaker 1: From New England to Texas stand monuments of scale, 200-year-old structures of rock and stone, the purest forms of craftsmanship laid dry without a drop of mortar. Lay the largest stones first, keeping them level by packing underneath. A dry stone retaining wall obtains its stability through a unique construction method of creating a load-bearing facade of interlocking stones. Speaker 1: The wall head has been built up at the same rate as the wall and is now ready for its top end stone. There we go. From shore to fell, defining fields & boundaries, or enclosing cliffs and other terrain dangerous to farm animals, they criss-cross our land The complex local geology means a wide variety of stone occurs across the Lake District, and this is reflected in the various styles of wall construction. If you build a wide, double stone wall, you can fill the top with a little bit of soil for shallow-rooted plants. Smaller stones may be used as chocks in areas where the natural stone shape is more rounded. Dry stone walling involves either stripping and rebuilding existing walls that have fallen into disrepair, or gapping – repairing gaps where the wall has collapsed. Richard: We are going to certainly use the same style and design as these here, although we’re going to slightly improve matters by incorporating in an inward slope or batter to the design. In some areas, such as South Wales, there is a tradition of placing the coping stones on a final layer of flat stones slightly wider than the top of the wall proper (coverbands). It’s at this stage that there are the greatest number of style variations. Such constructions are common where large stones are plentiful (for example, in The Burren) or conditions are too harsh for hedges capable of retaining livestock to be grown as reliable field boundaries. Dry stone retaining walls were once built in great numbers for agricultural terracing and also to carry paths, roads and railways. If you notice here, you see it has a shape there? The foundation stones are ideally set into the ground so as to rest firmly on the subsoil. Richard: Yeah, exactly. It’s quite important the face of the stone, that is the one that is facing the string, actually also slopes in. Try and gauge the average thickness of the foundation stones you have available. In over 100 years, they will go down a little bit. Dry stone retaining walls add beauty and enhance the value of your property as well as retain slopes to add usable level ground. The rows are composed of large flattish stones, diminishing in size as the wall rises. A-frames are the same as batter-frames. The first decision you need to make is whether you want a "dry-laid" (also called "dry stone" or "dry stacking") wall or a mortared wall — meaning whether your wall will be built only of stacked stone, or whether you will use mortar in its construction. The Incas were masters of this technique, in which blocks of stone are cut to fit together tightly without mortar. You had the right stone, but it was upside down. The coping is a row of stones that are laid on edge. During the Burke’s Backyard trip to Ireland, Don visited the Rock of Cashel, a cathedral built entirely (including the ceiling) by this dry stone method. There are common principles for all types of walls and walls that don’t have them are guaranteed to fall down. The style can be a single row or pairs that overlap. By remembering these key points, you too can get started. Great. August 08, 2020. Speaker 2: Matching two stones on either side of the wall, yup. It’s terribly important that each stone is manipulated in to the tightest possible fit with those that are beside it. Because here we are rebuilding a section of existing wall, the top must be finished in the same style. If a wall is to be well built, preparation is all important. Richard: There’s an old saying, each stone should do its duty by its neighbor. Richard: Okay. Speaker 1: When finished, a good foundation will look like a well laid path. Remember, each stone has a specific job to do so think carefully every time you lay a stone. It’s also able to accommodate the slight movement of earth especially with freezing and thawing in winter. The copes are then laid with their top edge as close to the string as possible, but not going above it. Speaker 1: No matter what size wall you build, keep the batter constant, one inch inward for every six inches of height will give the correct angle of slope. We take them one by one slowly and welt them down until you can’t move them into a better position so that they all settle down and they all interlock. They are also found in grazing areas where they are used to maximize the utility of the available stones (where ploughing was not turning up ever more stones). Richard: I certainly wasn’t a natural waller to begin with.  Burial sites near Burao in the northwestern part of the country likewise feature a number of old stelae.. Level off the wall exactly to the line of the strings before continuing on to the covers and the coping. You’re looking at this business of dove tailing it in. The stones used for pinning should be flat and wedge shaped for the greatest area of contact with the ground. It’s the flat base that the wall is built on and is wide to spread the load reducing the pressure on the ground. As the wall narrows in, smaller face stones will be needed which was why it was important to use the largest ones at the bottom. A single craft shape intricate spring houses and huge stone furnaces, all held together by friction and gravity, cleverly directed by the ingenuity of stone masons. Once level, tie the frame securely to rebar driven into the ground so that they cannot slip out of alignment during building. There are examples of dry stonewalls and structures that date back 5000 years and are still standing today. Dry-stone walls are strong and attractive and can last hundreds of years. Many junctions are so perfect that not even a knife fits between the stones. Gravity: It comes with a weight of stones and ultimately increases the friction. Never leave any gaps between them. The cyclopean walls of the acropolis of Mycenae, Greece, have been dated to 1350 BC and those of Tiryns slightly earlier. Although that sounds simple -- and in many ways it is -- building dry stone walls is not without challenges. In other words, we more or less match the string. You can throw yourself off with the level. If we’ve got a fairly decent sized hammer … Have we got a cutting hammer? Speaker 4: Okay. Now we set up the A-frames. Speaker 1: A deep footing is unnecessary. A stone wall can be a beautiful asset to your landscape, but building one requires research, planning, and patience. The natural finish of the stones visually complements most landscapes. They serve both as cattle/sheep fences and the lot's borders. You must avoid leaving holes. They’re placed three feet apart covering the joints between face stones wherever possible. That’s it, that’s it. Speaker 3: We could go down to smaller and smaller and smaller? We might have to trim that a little bit so we can put another face stone on. At the existing wall, set the strings at the correct height by pegging them directly into a sound part of the wall. In Belize, the Mayan ruins at Lubaantun illustrate use of dry stone construction in architecture of the 8th and 9th centuries AD. Dry stone construction is best known in the context of stone walls, traditionally used for the boundaries of fields and churchyards, or as retaining walls for terracing, but dry stone sculptures, buildings, bridges, and other structures also exist. Richard: What we have here is a stone which we really need to turn so that it runs along way in. Richard: This wall here is typical of the type of damage that you can see as you drive around the countryside. This will probably be between three and five inches. The cover stones are quick to lay, faster than a layer of face stones. Even on this side, you just break little pieces of waste and tuck them home so that by the time you finished, you should be able to stand on that stone and there is no movement on it whatsoever. Richard: It blends in really well. Walls-of-Stone-How-to-Build-Drystone-Walls-and-Rock-Fences.mp4 Transcript Speaker 1: From New England to Texas stand monuments of scale, 200-year-old structures of rock and stone, the purest forms of craftsmanship laid dry without a drop of mortar. Some dry stone wall constructions in north-west Europe have been dated back to the Neolithic Age. The wall is finished off with a heavy row of stones called the coping. Richard: Slide those into place. Although there’s a little bit of movement, by the time you’re packing them all together, they’re locked up tight. The style that follows depends on your area. Alen MacWeeney (photog.) Then what we need to do, you can see that it overlaps well, what we need to do is to pack very carefully underneath so that the tie-rock itself is bound to the core. 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. Natural rocks. Most older walls are constructed from stones and boulders cleared from the fields during preparation for agriculture (field stones) but many also from stone quarried nearby. A loosely packed core is a common reason why walls collapse. The strings are now set and we’re ready to start building the first of the lower courses. Lay the foundation stones side by side, touching each other in an unbroken row. They are so stable and strong that Malta’s Hagar Qi… Speaker 1: Lay the throughs or tie-rocks once the wall has been leveled off as close as possible to the strings. From there, you lay the face stones layer by layer, course by course, carefully, carefully packing as you go. It’s very important to remove all stones as far down as they have penetrated the earth and then we will clear that out, level it and we will have a nice smooth surface to rebuild the new wall on. The technique was also taken to Australia (principally western Victoria and some parts of Tasmania and New South Wales) and New Zealand (especially Otago). Above the throughs, the courses continue with careful packing in the middle. Richard: It is traditional in some areas to lay in tie-rocks but to flash them off one face and have them extending the other, but that’s not the correct principle. Those that are too big, have their edges trimmed off so that when the wall is finished, the top of the cope stones will have a clean and accurate line. Set aside those that are more than two feet long as these are often hard to find and are needed as the throughs or tie-rocks and the covers. 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