A trullo (plural, trulli) is a traditional Apulian dry stone hut with a conical roof. Their style of construction is specific to the Itria Valley, in the Murge area of the Italian region of Apulia. Trulli generally were constructed as temporary field shelters and storehouses or, as permanent dwellings by small proprietors or agricultural labourers. In the town of Alberobello, in the province of Bari, whole districts contain dense concentrations of trulli. The golden age of trulli was the nineteenth century, especially its final decades, which were marked by the development of wine growing.
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From the casedda to the trullo
The Italian term il trullo (from the Greek word ???????, cupola) refers to a house whose internal space is covered by a dry stone corbelled or keystone vault. Trullo is an italianized form of the dialectal term, truddu, used in a specific area of the Salentine peninsula (i.e. Lizzaio, Maruggio and Avetrana, in other words, outside the Murgia dei Trulli proper) where it is the name of the local agricultural dry stone hut. Trullo has replaced the local term casedda (pl. casedde) (Italian casella, pl. caselle) which was used by locals in the Murgia to call this type of house.
A stonemason specializing in the building of trulli is a trullisto or trullaro in Italian. The corresponding dialectal term is caseddaro (caseddari in the plural), i.e. builder of casedde.
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Distribution
The style of construction is specific to the Itria Valley, in the Murge area of the Italian region of Apulia. Trulli may be found in and out of Alberobello, and in the areas around Locorotondo, Fasano, Ostuni, Cisternino, Martina Franca, and Ceglie Messapica.
Geology
The Murgia is a karst plateau. Winter rains drain through the soil into fissures in the strata of limestone bedrock and flow through underground watercourses into the Adriatic. There is no permanent surface water, and water for living purposes must be trapped in catchment basins and cisterns. The surface forms a landscape of rolling hills and ridges punctuated now and again with dolines and other forms of enclosed depressions characteristic of karsts.
Architecture
Grouping
The trullo is essentially a rural building type. With its thick walls and its inability to form multi-story structures. Because it is wasteful of ground space it may be considered ill-suited to high density settlement. Being constructed of small stones, however, it has a flexibility and adaptability of form making the design most helpful in tight urban situations.
In the countryside, trullo domes were built singly or in groups of up to five, or sometimes, in large farmyard clusters of a dozen or two dozen, but never for the occupancy of more than a single rural family.
Materials
Depending on the area, the building material used could be either hard limestone or calcareous tufa.
Masonry
Traditionally trulli were built using dry stone masonry, i.e. without any mortar or cement. This style of construction also is prevalent in the surrounding countryside where most of the fields are separated by dry-stone walls.
Walls
In Alberobello, the structural walls of a trullo are laid directly on the bedrock, after removal of the topsoil when necessary. Their width varies from 0.80 metres to 2.70 metres (a measure recorded in the Trullo Sovrano). Their height (from ground level to where the vault starts) ranges from 1.60 metres to 2 metres. Their exterior facing has a 3 to 5% batter.
Underground cistern
The stones needed for starting to build a trullo were provided by digging a cistern (cisterna), an absolute necessity in an area devoid of water. The cistern was capped with a lime-mortared barrel vault or dome that in many cases, supported the floor of the house.
Plans
The trullo may take on a circular or a square plan. The circular trullo is mostly a temporary shelter for animals and their fodder, or, for the peasant himself.
The trullo that is part of a grouping of three, four, or five follows a squarish plan. It may serve as a kitchen, bedroom, animal shelter, store room for food or tools, oven, or cistern, as the case may be.
In Alberobello, groupings did not exceed two trulli, as evidenced by nineteenth-century notarial deeds.
Roofs
The roofs are constructed in two skins: an inner skin of limestone voussoirs, capped by a closing stone, and an outer skin of limestone slabs that are slightly tilted outwardly, ensuring that the structure is watertight. The roof stones may be taken away without compromising the stability of the rest of the building.
Pinnacles
In Alberobello, atop the cone of a trullo, there is normally a hand-worked sandstone pinnacle (pinnacolo), that may be one of many designs - disk, ball, cone, bowl, polyhedron, or a combination thereof, that is supposed to be the signature of the stonemason who built the trullo.
Whitewashed symbols
Additionally, the cone may have a symbol painted on it (as shown in the picture of the trulli in Alberobello.) Such symbols may include Christian symbols such as a simple cross, a cross on a heart pierced by an arrow (representing Santa Maria Addolorata, i.e. Our Lady of Sorrows), a circle divided into four quarters with the letters S, C, S, D in them (for Sanctus Christus and Sanctus Dominus according to one source, but more likely, the initials of Santo Cosma and Santo Damiano, the two saints to whom the local basilica is dedicated) and quite a few others.
The symbols now visible on a row of trulli in via Monte Pertica (cross, pierced heart, host with rays radiating from it, tree, dove symbolising the Holy Spirit, and crescent with a cross) were painted only in the late twentieth century and the early 2000s when the roof cones were renovated.
The quaint symbols that grace the trullo-like cones of bungalows at the Hotel dei Trulli in Alberobello first appeared in the late 1950s, when the hotel resort was built.
Interiors
The vast majority of trulli have one room under each conical roof, with additional living spaces in arched alcoves. Children would sleep in alcoves made in the wall with curtains hung to separate them from the central room.
A multi-room trullo house has many cones, each representing a separate room.
Along with its exterior wall, a trullo's interior room and vault intrados often were rendered with lime plaster and whitewashed for protection against drafts.
The trulli used as dwellings all have an open fireplace complete with a flue (hidden in the masonry) and a stone-built chimney stack (rising high above the roof). Because of their design, trulli are difficult to heat: the walls are very thick and warm air will rise up the interior cone. An alternative heating solution was to use a central brasero with embers in it (a specimen may be seen in Alberobello's Museo del Territorio).
The thick stone walls and dome of the trullo that cool pleasantly during the summer, tend to become unpleasantly cold during the winter months, condensing the moisture given off by cooking and breathing, making it difficult to feel warm even in front of the fire. The inhabitants simply leave the doors open during the day to keep the interior dry, and live more outdoors than in.
In trulli that were used as stables, the troughs the animals fed from may still be seen.
Windows
Owing to the concentration of houses, trulli have few openings except for their doorway and a small aperture provided in the roof cone for ventilation. As a result, it can be quite dark inside.
Façades
Some trullo houses have had their perimeter walls raised substantially so that their cones may be hidden from view, making the buildings resemble ordinary houses.
A number of conical roofs have a truncated top with a round hole in it covered by a movable circular slab. Access to the hole is by an outside stairway built into the roof. These trulli were for storage of grain, hay, or straw.
History
There are many theories behind the origin of the design. One of the more popular theories is that due to high taxation on property, the people of Apulia built dry stone wall constructions so that they could be dismantled quickly when tax inspectors were in the area.
In available historical records from the mid-fourteenth century to the late sixteenth century, the area of Alberobello is referred to mostly as selva ("forest") and occasionally, as a land from which grazing animals were excluded. Evidence is lacking as to the existence of dwellings in the area prior to the seventeenth century.
A Plan of the Territory of Mottala drawn by Donato Gallerano in 1704 reveals the existence of a nucleus of trulli in the midst of a large wood, making up the initial settlement of Arbore bello.
In a geographical map drawn by Giovanni Antonio Rizzi Zannoni in 1808, one may see the selva of Alberobello and, in the midst of it, a clearing with a settlement pattern of scattered houses that bears a striking resemblance to the present-day urban pattern.
In an 1897 photograph of the rione Monti (the district of the Mounts), the trulli are far less densely packed than today, being surrounded by enclosed gardens.
The urban trulli still extant in Alberobello date from the eighteenth, nineteenth and twentieth centuries. After having undergone a process of densification in the first decades of the twentieth century, the trulli settlements began to be deserted during the second half of the twentieth century.
The rural trulli, on cheaper land, ceased to be built when the cost of labour began to rise in the twentieth century. The sheer expense of handling the hundreds of tons necessary for a single house became prohibitive.
Trulli as a tourist attraction
Today the surviving trulli are popular among English and German tourists and often, are bought and restored for general use. Anyone wishing to restore a trullo, however, needs to conform with many regulations, as trulli are protected under the United Nations Educational, Scientific, and Cultural Organization (UNESCO) world heritage law.
Since the beginning of the twenty-first century, a large number of trullo houses have been restored and converted into second homes or self-catering cottages. In 1999, rebuilding a trullo roof would cost about three million lire (about 1,500 euros) and in 2009, the cost rose up to 15,000 euros.
In late twentieth century the Monti district in Alberobello was largely a derelict area when a local craftsman, Guido Antionetta, began buying up a few dozen abandoned trulli, installed modern kitchenettes in them and added a few pieces of wooden furniture and cast-iron bed frames with a view to renting them out as mini apartments for the night for less than rooms cost at local hotels. He even painted good-luck symbols on the roof of each trullo.
In the Alberobello region, local residents who still live in trulli seem to do so only because they cannot afford to move out or, because they provide bed and board for tourists in their trulli.
Source of the article : Wikipedia
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