Three ties may be used of which the first (6) joins the foot and the head of the principle rafters (1). The second (7) acts with a stub king post (2) to reinforce the ridge, and third (8) connects the foot of the leg (3) to an interior point on the principle rafters (1)....
original source: http://www.southernpine.com/span-tables/joists-rafters/ - Complete set of46 tables for live loads 30 to 100 psf and dead loads 10 to 20 psf and deflection limit 360 (joists) or 180 - 240 (ceilings and rafters for various snow loads), popular examples of these tables ...
Three ties may be used of which the first (6) joins the foot and the head of the principle rafters (1). The second (7) acts with a stub king post (2) to reinforce the ridge, and third (8) connects the foot of the leg (3) to an interior point on the principle rafters (1)....
Structural use of timber. Recommendations for the calculation basis for span tables. Purlins supporting raftersdoi:BS 5268-7.6:1990传统斜屋顶结构中使用的实木檩条的允许净跨度的计算基础,即不包括桁架椽屋顶.交叉引用:BS 648BS 4471BS 4978BS 5268:第2BS 5268部分:第3BS 5268部分:第7.1BS 6100节:第2.1BS...
A five-purlin flush-gable roof is typically used. The roof consists of a five-purlin beam, short struts, a three-purlin beam, and a king post from bottom to top to support the roof purlins (Figure 8). The traditional roof covering consists of rafters, reed matting, mud, and slate tile...