Accessorizing with Stone


Natural Stone

The following case studies highlight the use of natural stone. The stone used was obtained from various stone quarries located in the Rhône-Alpes area of France. Many stones also were obtained from ruins located in various parts of the countryside.

stone quarries located in the Rhône-Alpes area of France

This article highlights five projects: a cabin, a fireplace, a bench and a stone wall. All four projects incorporate the philosophy of Daniel Hörning: integrating organic shapes and placing them in a geometrical order. Hörning places emphasis on natural stone patterns, rather than focusing on joints, using them solely to highlight the design. They are all located in the Drôme provencale, the southern part of the Rhône-Alpes region of France.

Natural Stone  Accessorizing with Stone

Stone cabin – Bourdeaux

The cabin is based on the “borie,” a dry stonewalling hut found in the Provence-Alpes-Côte d’Azur region of France. It can be viewed as a mock up for a possible bigger property – a meditation room or church. The structure is unique as it is a half a square and half a circle combined, making it a mixture of architecture and art.

The cabin was constructed using “la pierre calcaire” of Puygiron, a limestone (from ivory in color to an intense gray-blue hue) with accents of “pierre du grès,” a sandstone. This limestone is easy to shape as the stone is of a medium hardness. This gives you control in the shaping process, resulting in the sharpest edges possible. Natural lime mortar was used solely to assemble the stones.

Natural Stone  Accessorizing with Stone

Natural Stone  Accessorizing with StoneHörning began with about 65,000 pounds of stones, having selected the blocks at a local quarry. After cutting the blocks with a hydraulic stone splitter followed by manual stone shaping, he ended up with about 33,000 pounds used for the construction.

The total surface size (from outside) is 210 SQUARE FEET; the diameter is 18 feet, and the wall is 20 inches wide. From the inside, the height ranges from 5.6 to 6.9 feet (see Figure 1.)

Fireplace – Truinas

This project was the first fireplace Hörning had ever constructed and was built using sandstone from local ruins. Sandstone is not only esthetically pleasing to this piece, but also it is an excellent heat incubator, because it is compact and porous – similar to bricks.

stone masonry fireplaceThe philosophy Hörning abides by creates an artistic feel to his work. Therefore, the design needed to consist of simple, straight lines and rectangular shapes. To add contrast, small details such as the niche pictured on the side were created as simple accents. A layer of bricks is placed around the fireplace insert to the very top of the fireplace. A gap exists between the brick wall and the natural stone wall, in order for the hot air to circulate and progressively heat the stones. The hot air outlet is located on the right side of the fireplace.

The width of the fireplace is 3.28 feet, the depth is 2.45 feet, the mantle is 5.5 inches, the fireplace insert is 1.8 X 2 feet, and the height is 7.7 feet.

The Bench – Comps

The natural stones for the bench were found in the wilderness, and were used exactly as they were found, with no splitting or cutting aside from the groove created to place the wood portion. What makes it unique is that the stones are asymmetrical and are not shaped into perfect rectangular blocks.

The height of the seat is 18 inches, the depth is 12.5 inches and the length is 4.2 feet. The table that accompanies this piece consists of a metal bar placed into a stone sphere (10-inch diameter).

use of natural stone

The Wave – Salettes

This sandstone wall is created from old “murs de soutènement,” retaining walls used by farmers. This project was built against an already existing wall for visual purposes and was erected in the form of an abstract “wave.” One challenging aspect was to not disrupt the horizontal stone pattern placement when constructing the “movement” of the wave at the very top. The wall is 18 feet in length, and ranges from 4.25 to 6.5 feet.

use of natural stone

Volcanic stone house

The volcanic house is located at 3,000 feet in the middle of Auvergne, a region in central France. It is an isolated stone house built of volcanic stone, called Basalte. The goal of this project was to build a house with the hardest stone on the planet under the concept of “organic shapes in geometrical order,” where no joints are visible. The house will be available for purchase at the end of 2013.

use of natural stone

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