timber roof truss

基本解释

Fig. 12 illustrates a timber double post roof truss.
圖12所示爲一個雙柱木屋頂桁架。
An example of a timber roof truss having a single post is given in FIG. 11, which illustrates an isometric view of a common form of roof construction.
圖11所示爲帶一個立柱的木屋頂桁架的示例。它展示的是一個普通屋頂結搆的軸側圖。
FIG. 12 illustrates a timber double post roof truss . This type of truss is constructed where a wider span or a less restricted roof space is required.
圖12所示爲一個雙柱木屋頂桁架。這種桁架主要建於跨度要求較大或屋頂空間限制較少的地方。