A rice barn is a type of barn used worldwide for the storage and drying of harvested rice. The designs, usually specialized to its function, and it may vary between countries or between provinces. Rice barns in Asia appear quite different from rice barns found in other parts of the rice cultivating world. In the United States rice barns were once common throughout the state of South Carolina.
Rice barns in Indonesia (known as lumbungs) are built on four poles, usually stand between 1½ metre and 2 metres up from ground level. The upper storage area often has a distinct omega shape created by bending flexible framing of split bamboo or betel nut trees to support the roof. The roof is generally covered with alang-alang grass and the sides are made of woven, split bamboo (called pagar). The pole support structure beneath the raised, enclosed rice barn is open with no walls. A floor or platform is constructed of wood and bamboo about 1/2 metre above the ground. This lower platform provides a convenient, shady place for people to sit and relax. In many traditional villages this lower sitting area is a meeting place for village residents where both business activities and social interaction commonly occur.
In vernacular architecture of Indonesian archipelago rice barns are made of wood and bamboo materials, and roof usually made from dried grass, palm leaves, or ijuk (Arenga pinnata fibers), and most of them are built raised up on four or more posts to avoid rodents and insects. The styles could be differ according to each Indonesian ethnics architectural styles. The omega shaped curved roof is typical Sasak style of Lombok island. The distinct tongkonan style roof can be found on the rice barns of Torajan. Other examples include the Sundanese leuit and Minang rangkiang.
Rice barns in Laos commonly reflect the design of Laotian homes, though they are usually separate buildings from the home. The rice barn, built on wooden or bamboo piles, is usually located near the home or on the edge of the village.