The original materials used were the walls (pared =guambipe, in ancient Guaraní, Ogyke in current Guaraní) made of clay (tuju) reinforced with wood or sticks, pillars (oga okyta, in Guaraní)), resistant wooden pillars, thatched roof (Ogahoya. in Guaraní) on a wooden structure, and doors and windows. The koty guasu is a free space, like a covered gallery (ogaguy), in the sense that it does not have the front walls, generally oriented to the North (unpleasant warm winds) or Northeast (soft and cool winds, considered the best orientation in Paraguay and surrounding regions): however, on the South front (cold and temporary winds) a wall materializes with small openings or separation from the roof, protected by the low eaves, for the cross ventilation and the breeze effect: As an enclosure of the North or Northeast front (koty mbotyha) of this space (tenda), a "trillage" or kuarapemby (kind of curtain wall of tacuaras in crossed diagonals) was sometimes used. This kuarapemby is also made of light wooden slats, bricks, or ceramic pieces, forming a lattice wall of ceramic elements. The typology accepts any type of materials: they have been built and continue to be built in mud, tacuara, "picanilla" or "caña de Castilla" (a type of small diameter tacuara, (used for enclosures and fences, ceilings, light and temporary structures in general), adobe, common brick, pressed or machine brick, as well as a combination of all of them is usual. The Chiriguanos or Andean Guaraníes"), build them with stones. The biggest problem with the open front is to maintain privacy and not cut off cross ventilation, as well as prevent the entry of dust. Hence the need to use the irrigation of the front patio, the bower and/or gallery, as well as bushes, vines and vegetables that filter said environmental dust. In areas with a lot of dust, the walls are built on the north front, but with large openings, with natural and artificial filter systems of a variety of nature. trillage, lattice walls, light curtains, mosquito nets, vines, dust-filtering bushes and other resources, such as a large low eave and frequent watering of the patio. It is essential that the front patio be compact, free of dust, for which it is built with earth rammed with ashes or with cement mortar, or covered with floors of stone slabs, common bricks, tiles, or calcareous, cementitious or ceramic tiles. The patio is generally covered by some vine or combination of them. The common brick or terracotta floor is widely used: they absorb the irrigation water that evaporates little by little during the course of the day, producing with the slightest breeze, a very pleasant cooling effect. Lately, the use of open-weave awnings, popularly called "half shade" has proliferated for both horizontal and vertical semi-enclosures. of large surfaces with a very low cost.
The stilt version of the "kulata jovái" is used in flooded areas along the floodplains of large rivers such as the Paraná and Paraguay. This stilt typology has been studied in the Argentine province of Santa Fe, by the architect César Carli, as "the islander's home", highlighting its functionality, flexibility, economy and aerodynamic, resistant and ecological qualities.
Houses of this typology are also built with material based on Karanda'y logs, both the walls, the structural elements: pillars and beams, as well as Karanda'y tiles, in the rural area of the community called "Ceibo", former tannin works, district of Puerto Pinasco, in the Department of Presidente Hayes in the Western Region of Paraguay, that is, the Paraguayan Chaco.[13].
Recently, neighborhoods with a version of Casa Carli based on the Kulata Jovái are being built in the city of Santa Fe (Argentina) "Santa Fe (Argentina)"). Mathematical studies have demonstrated the possibility of making more than 10 million variations of this prototype.
In Buenos Aires, the most recent work of the famous Argentine architect Mario Roberto Álvarez, the "Madero Office" is a 140 m high building, based on the symmetrical typology similar to the Kulata Jovái: The typical floor plans consist of a central open floor, which has service cores at its ends (or "butts").[14]
Similar parties exist in the vast South American Amazon region, especially in the stilt homes of Peru, Venezuela, Brazil and Bolivia. The original Mayan peasant home is almost identical to the "kuláta jere", in the sense of the construction system and the rounded shape of the ends. The roof structure of the Mayan house is reinforced by a cross (TANCHE, in the Mayan language) or San Andrés-type cross that does not exist in the Paraguayan jovái culata. On the other hand, the Mayan house does not have the central multipurpose space or Koty guasu.
This symmetrical match has been used by famous architects, such as Louis I. Khan. In the work Trenton bath house, New Jersey, included in the National Register of Historic Places of the United States. It is a beautiful work, which can be described as exemplary, consisting of a double Kulata Jovái with a central patio.
