What are the four main types of trusses?
The four most basic categories in the truss bridge arena are the Warren, Pratt, Howe and K Truss. Each utilises the basic ‘triangle’ design, characteristic of the truss bridge, however, each varies slightly in the way they distribute compression and tension.
What are the different types of truss configurations?
Truss Configurations:
- Barrel Vault. A barrel vault offers a unique rounded effect using trusses.
- Bowstring. Bowstring trusses have the appearance of a rounded top chord utilizing many top chord panels of varying pitch.
- Cantilevered Mansard with Parapets.
- Clerestory.
- Double Cantilever.
- Double Inverted.
- Dual Pitch.
- Flat Vault.
What is the bottom chord of a roof truss?
The bottom chord is one of three key components to any truss. In addition to the top chord and webs, the bottom chord is used to transfer forces to the truss bearings. The bottom chord typically carries combined tension and bending stresses.
Why are there different types of trusses?
A roof truss is made up of a couple of different elements. The exterior frame members are called chords and the interior triangle structures are webs. These two elements can be manufactured in different shapes and sizes depending on the requirements of the job.
What is AK truss?
Definition of K truss : a building truss in which the vertical member and two oblique members in each panel form a K.
What is Baltimore truss?
The Baltimore truss is a subclass of the Pratt truss. A Baltimore truss has additional bracing in the lower section of the truss to prevent buckling in the compression members and to control deflection. It is mainly used for train bridges, boasting a simple and very strong design.
What are mono trusses?
Mono and vaulted mono trusses are only sloped in one direction. These types of trusses are often used to create multilevel roof lines or construct additions to an existing building. A bobtail truss has the same pitch on each side, but the peak is not in the center of the span.
What are roof chords?
TOP CHORD An inclined or horizontal member that establishes the upper edge of a truss. This member is subjected to compressive and bending stresses.
What are end trusses called?
Residential dropped end trusses (also referred to as gable end frames) are commonly used to achieve up to a 2′ gable overhang. The end trusses are built with lower top chords that allow 2×4 lookouts or ladder sets to be placed on top of the end truss and nailed to the first common truss.
What is a truss chord?
CHORDS – the outer members of a truss that define the envelope or shape. TOP CHORD – An inclined or horizontal member that establishes the upper edge of a truss. This member is subjected to compressive and bending stresses.