Japanese Roof Slope

It s based on convention and math.

Japanese roof slope.

The hidden roof is a type of roof widely used in japan both at buddhist temples and shinto shrines. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials. A type of gable found in some traditional japanese buildings. It is composed of a true roof above and a second roof beneath permitting an outer roof of steep pitch to have eaves of shallow pitch jutting widely from the walls but without overhanging them.

The second roof is visible only from under the eaves and is therefore called a hidden roof while the first roof is externally visible and is called an exposed roof in english and cosmetic roof in jap. The application of curved lines in japanese architecture is based on a style imported from the asiatic continent and dates from about the middle of the 6th century. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. Apr 29 2016 the four fundamental forms of japanese roof design.

A hipped roof is sloped in two pairs of directions e g. These relate to how high the roof is from the rest. Built up roofs should be installed on roof slopes 0 25 12 or greater 2015 irc r905 9 1 except for coal tar built up roofs that have a minimum roof slope of one eighth unit vertical in 12 units horizontal 1 slope. A hybrid of a gable and a hipped roof.

Roof pitch is a measurement of a roof s slope expressed as a ratio. There are 2 sets of numbers that convey a roof s pitch. There are many curved lines in the design of the japanese roof and the most remarkable are the curves of the eaves and the slope of the roof. N s and e w compared to the one pair of direction e g.

N s or e w for a gable roof. The tricky part is determining pitch for any existing roof. For example our azumayas use rafters ridge beam rafter ties and modern connectors which are mostly concealed instead of the traditional japanese way of constructing roofs. Many of our projects plans and kits are in japanese style design but we do employ some traditional american joinery and western style building techniques.

Asian teahouse japanese gazebo plans we presently offer over 35 different sized azumaya plans with straight curved and draped roof versions of the dutch hip or irimoya style roof with a curved extended ridge beam and wide roof overhangs. Eaves in japanese architecture.