Kingpost Roof Details

The king post truss is also used for simple roof lines and short span bridges.

Kingpost roof details.

366 represents a king post roof truss. The top two diagonal pieces that serve as rafters are known as the upper cords. In the south a king post roof truss may be able to span 36 feet with 16 foot spacing where the same truss in a snow belt up north may only be able to span 24 feet with the same spacing. Conventional parapet detail 2.

Queen post roof truss queen post truss is define as a pitched roof support using two vertical tie posts connected between the tie beam and the rafters. Therefore the king post truss would have been without doubt the construction used. Conventional parapet or ribbon window figure 11. P r is the principal rafter 5 inches deep and 4 inches thick.

Usage in mechanical plant and marine engineering differs again as noted below. It is used in aircraft construction. T the tie beam 9x4 inches. Rafters in turn support the common rafters.

S the struts 4x4 inches. King post truss is used when there is a need to support the weight of an expansive roof. And the king post k is 5 1 2 x 4 inches at x. The king post in tension holds up the middle of the summer beam those 1 ton 12 by 12 s that run that are supported by those big jowled posts and in turn support all the floor joists.

The kingframe steel framing system sfs kingpost provides both installation and performance benefits offering up to 20 savings on material and 40 savings on installation compared to conventional parapet details. This roof provides not only functionally but also adds beauty as well. In aircraft design a strut called a king post acts in compression similarly to an architectural crown post. The truss has four main parts.

Its bottom chord acts as a tie for the room holding the walls from spreading. But as it has to be cut out to give a bearing for the struts and principal rafter it really comes out of 9 x 4 inch stuff being 9 inches wide both at top and bottom reduced between to 5 1 2 inches as shown. Detail of king post and bottom tie beam exploded view of the king post with stirrup connection. The king post itself is an 8 by 8 and the principal rafters are.

The bottom horizontal which serves as ceiling and upper floor joist is known as the lower cord. Kingpost parapet or ribbon window figure 12. A king post truss solves many structural problems as well. A king post is a central vertical post used in architectural or bridge designs working in tension to support a beam below from a truss apex above.