|
A board roof or boarded roof〔"Boarded roof" def. 1.Davies, Nikolas, and Erkki Jokiniemi. ''Dictionary of Architecture and Building Construction''. Amsterdam: Elsevier/Architectural, 2008. 43. Print.〕 is a roofing method of using boards as the weather barrier on a roof. Board roofs can be applied in several ways, the basic types have the boards installed vertically and installed horizontally. ''Double board roofs'' were sometimes used on railroad cars.〔"Double-board roof". Forney, Matthias N., Leander Garey, and Calvin A. Smith. ''The Car-builder's Dictionary: An Illustrated Vocabulary of Terms Which Designate American Railroad Cars, Their Parts and Attachments''. New York: Railroad Gazette, 1879. Print.〕 ==Vertical board roofs== Vertical board roofs may have the boards installed in a number of ways. The ''board-on-board'' roof has two layers of vertical boards, the upper layer covering the gap between the boards in the lower layer. The lower layer may be spaced apart or installed tightly together.〔(The Roof from tesa )〕 In any type of vertical board roof the boards may be grooved to catch runoff. The board-and-batten'' roof the upper layer are slender pieces of lumber called battens. The lower layer of boards are installed tightly because the battens are narrow. Traditional roof coverings in Japan are mostly thatch, tile and wood shingle but some board roofs were used and are called yamatobuki (大和葺), the boards themselves naga-itabuki (長板葺)〔(JAANUS )〕 The framing for a vertically boarded roof needs purlins spaced evenly apart instead of rafters. In parts on New England a common type of roof framing has ''common purlins'' which are boarded vertically, but evidence of these roofs having exposed boards as roofing is rare. Animal shelters may have board roofs which are a single layer with small gaps between the boards to allow light and ventilation. Any leakage is minimal and does not bother the animals.〔Fream, William, William Youatt, and Thomas Hartwell Horne. ''The Complete Grazier and Farmers' and Cattle-Breeders' Assistant; A Compendium of Husbandry Embracing the Breeding''. London: C. Lockwood, 1893. 667-668. Print.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Board roof」の詳細全文を読む スポンサード リンク
|