Traditional Chinese Courtyard


The traditional Chinese house design is based around a courtyard (Siheyuan). Chinese houses normally comprised a main residence flanked on two sides by walls and smaller rooms to form an enclosed courtyard. The windows and doors open onto the courtyard rather than the exterior. It was designed for the occupation of an extended family, typically three generations. 
Traditional Courtyard in South China
Larger and grander houses have courtyards nested within courtyards but followed the same design. The courtyard is flanked on all sides by halls linked by covered walkways (廊 láng).  The evidence that this style of architecture goes back at least to the Han dynasty comes from clay models of houses that have been found in tombs, so the courtyard design is over two thousand years old. 
 
Gate & Screen Wall
The main gateway entrance into the courtyard house had two red doors; it was located on the eastern part of the south side conforming to the rules of feng shui. Immediately behind the entrance was a solid screen wall (照壁 zhào bì) that denies direct view or access to the courtyard, in Feng Shui terms it was to keep the evil spirits out (and cold winds too). The largest example of a wall of this type is the Nine Dragon Wall in Beijing made with colored glazed tiles.
The entrance hall opened into a front courtyard with the formal entrance into the main courtyard that lies to its north side. In high status houses the buildings are linked by covered walkways and the servant quarters lie to the north of (behind) the main building. They may also have been watch towers at the corners. As the architecture was so standardized it was the decoration of the entrance and internal rooms that gave each household its individuality.

Windows
As the use of window glass was pretty much unknown in China, windows were covered in waxed paper or thin silk in winter and left uncovered in summer. Often only the south side would have windows . The window frames were decorated with intricate, wooden geometric lattice-work designs. The design motifs can be used to date and locate a building as they changed with time and region. The internal walls and screens within the building were not load-bearing and could be easily taken down and rebuilt to reflect the needs of the family. Brick was used for city walls and fortifications in China but not in house construction, instead wattle and daub was used as they are easy to remove.

Wood Construction
As China is subject to violent earthquakes it was not safe to build a high stone or brick building. It has only been with the use of re-enforced concrete that high-rise building has been possible. Sturdy wooden pillars can withstand earthquakes better than stone walls. Indeed in a relatively recent earthquake of a village it was only the traditionally built temple that survived unscathed.
 
Each building around the courtyard was laid on a solid stone or brick base. The base was often raised a couple of feet to prevent the possibility of flooding. On the base are placed the main wooden supporting pillars set onto stone pads. The pillars are tenon jointed by cross-beams in both directions. Traditionally an even number of columns are used to provide an odd number of bays. The bays between the pillars was a standard (间 Jian) length and a ‘Jian’ was used as a measure of distance.

Although the wooden pillars have no capitals the pillars are attached to the roof with elaborate wooden brackets (Dougong). These Dougongs became more elaborate over the centuries and they can be used to date a building. The bracket arm length was a standard proportion of the whole building and all the timbers were cut on multiples of this unit size. High status buildings used pillars made from Nanmu wood ( 楠木) - a tough straight conifer from southern China. The interior and exteriors walls are not structurally important or load bearing, it is the pillars that take all the weight of the roof.
In terms of color scheme for the house, the base was white and the pillars red with blue eaves and for Imperial buildings it was topped by yellow tiles.

Roof
The traditional roof is constructed by laying diminishing lengths of roof timbers fixed on top of each other with purlins at the ends. The whole roof rested on a series of orthogonal timbers that ran between the evenly spaced pillars. The timber was jointed rather than nailed together. A cantilever arrangement was used to support over-hanging eaves. The whole roof was covered with alternating layers of concave and convex terracotta tiles, although in rural areas thatch was used. The ceiling beneath could be flat or vaulted.

The roof ridges often have clay figures of deities and animals including dragons and a man riding a hen because Chinese people believe that these brought luck to the house and its occupants. The more prestigious the house the more creatures there are on the roof ridge.  More than one legend attempts to explain the end figure, the man riding on a hen,  it probably symbolizes ‘impossibility’ as a man can’t ride a hen, and a hen can’t fly; so the figure is therefore doubly rooted there and protects the roof and house. Alternatively it may commemorate the tale of Prince Min of Qi, a cruel tyrant tied to the end of the roof 2,200 years ago. 
 
Other figures on the roof ridge may include the hornless dragon on protecting the building against fire as dragons control water, phoenixes, qilin and other mythical beasts. 
 
In the Ming dynasty there was a standard ordering of the protective animals: hen, dragon, phoenix, lion, qilin, horse and hornless dragon, which is always an odd number. High status houses have decorated finials at the end of each row of roof tiles as well as a pair of dragons on the ridge of the roof.
Traditional Courtyard in South China
In southern China the buildings rose to two floors, while in the north typically only one floor. There was a belief that good spirits flew not far above the ground and so high buildings would block their path. The prime dwelling space was on the first floor of the south facing building. It was here that the senior members of the extended family (the paternal grandfather and grandmother) usually lived. In the more prosperous families, each family group would occupy a separate courtyard. In the design of roofs there is a key division between northern and southern China. In the north, roofs have to cope with a heavy burden of snow while in the south more shade is needed so southern roofs are more curved and elaborate. These roofs may have the eaves so curved that the corners point upwards (flying eaves) and reach the same height as the top of the roof. 

History of Courtyard
Completed courtyards appeared as early as 3,000 years ago in the Western Zhou Dynasty. The courtyard in Han Dynasty had new additions. With the influence of Fengshui theory, the courtyard began to follow a set of Yin and Yang theory from site to layout. The courtyard in the Tang Dynasty has narrow front and square back in pattern. The courtyard in the Yuan Dynasty gradually became mature. The Traditional Beijing courtyard was finalized then. The unique Beijing courtyard was formed in the Ming and Qing dynasties. Courtyards in the Qing Dynasty were more special than that in the Ming Dynasty. Currently, from Dongdan to the two sides of Lama Temple Avenue, both sides of the North-South Luoguxiang, from Xidan to Xinjiekou street, luxurious courtyards are still can be found.


Layout of Courtyard
Formal courtyards usually refer to one yard with one family and the plane pattern is flexible. The homeowner can build the house according to the size of the land and the household of the family. It can be one-row house, three or four rows of houses, as well as two-courtyard wide cross yard. Small courtyards have 13 rooms, One-row or two-row courtyards have 25 to 40 rooms. The back wall of wing house is also the yard wall. An independent wall is built around the corner. A big courtyard has a tall and independent yard wall and does not open windows, so as to maintain its privacy. In terms of construction style, many palaces and temples are also designed and constructed in accordance with the layout of the courtyard.

Courtyard's Living Philosophy
One family living in an independent courtyard has always been the living format of the Chinese family. A courtyard is a city, a country, a clan, and a world for one family.

The traditional courtyard is independently lived in by one family. Family members follow strict living orders. The largest and best house is belonging to the oldest parents with highest authority. The room lived in by the parents is known as main room, which is not only the living place for parents, but also the gathering center for family members. Children and grandchildren live in the wing and side houses. Man servants are not allowed to enter inner chambers and can only live in the outside yard.

Traditional courtyards always have symmetrical patterns and features with obvious and prominent central axis. The symmetrical pattern creates a solemn atmosphere and makes the main house in the central axis majestic and overwhelms the subsidiary houses.



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