Queen post
Encyclopedia
A queen post is a supporting post designed to span longer openings than a king post
. A king post uses one central supporting post, whereas the queen post uses two.
and use a diagonal brace between the outer edge. The central square of between the two verticals was either unbraced on shorter spans, or had diagonal braces from the bottom of each queens post to the center of the upper cord. The deck is supported by a king post, which is held up by a triangular truss
.
An alternative truss construction used a pair of cross beams between the Queen Posts, forming an 'X'. This is then considered a Warren truss
.
King post
A king post is a central vertical supporting post used in architectural, bridge, or aircraft design applications.-Architecture:...
. A king post uses one central supporting post, whereas the queen post uses two.
Architecture
A queen post bridge has two uprights placed about one-third of the way from each bank. They are connected across the top by a beamBeam (structure)
A beam is a horizontal structural element that is capable of withstanding load primarily by resisting bending. The bending force induced into the material of the beam as a result of the external loads, own weight, span and external reactions to these loads is called a bending moment.- Overview...
and use a diagonal brace between the outer edge. The central square of between the two verticals was either unbraced on shorter spans, or had diagonal braces from the bottom of each queens post to the center of the upper cord. The deck is supported by a king post, which is held up by a triangular truss
Truss
In architecture and structural engineering, a truss is a structure comprising one or more triangular units constructed with straight members whose ends are connected at joints referred to as nodes. External forces and reactions to those forces are considered to act only at the nodes and result in...
.
An alternative truss construction used a pair of cross beams between the Queen Posts, forming an 'X'. This is then considered a Warren truss
Truss bridge
A truss bridge is a bridge composed of connected elements which may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges...
.