Illustrated Architecture Dictionary

King post

A vertical member connecting the apex of a triangular truss with the base.

The king post is usually strictly a tie intended to prevent the sagging of the tie beam in the middle.

In a common form of king post roof truss there are diagonal struts, supporting the main rafters, and bearing upon the enlarged foot of the king post.

Truss: A rigid framework, as of wooden beams or metal bars, designed to support a structure, such as a roof

Tie beam: In roof framing, a horizontal timber connecting two opposite rafters at their lower ends to prevent them from spreading

See also queen post

Found in Gothic Revival,Queen Anne styles

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Examples from Buffalo architecture:

• Illustration above: 298 Jersey St.
  
  
• 383 Bryant Ave.
  
  
• 22 Irving Street
  
  
• 25 Irving Street
  
  
• 249 North Street
  
  
• Richard A. Waite House (has diagonal struts)
  
  
• Ross Funeral Home
  
  
• Roycroft Inn
  
  
• Calvary Episcopal Church, Williamsville, NY
  
  
• Photo: Mrs. William J. Dickerson House, 298 Jersey Street
  
  
• Photo: 86 York Street

Other examples:

• Union Station, Palmer, MA
  
  
• San Francisco "Painted lady," CA