A truss is a very useful structures as far as weight of building is considered.
Roof truss construction term.
We will then discuss the framing square and learn how it s used to solve some basic construction problems.
Truss designing buildings wiki share your construction industry knowledge.
Piggyback truss a truss supported directly on top of another.
But before discussing roof framing we will first review some basic terms and definitions used in roof construction.
Without roof buildings would be exposed to all kinds of elements rendering them completely useless.
Nominal dimension an approximate dimension usually used to describe the size of an item such as a 2x4 which should actually measure 1 1 2 x 3 1 2.
Also commonly used in cathedral ceilings for its construction convenience the scissor roof truss reduces the need for a bearing beam.
Trusses are most commonly used in bridges roofs and towers.
One more definition is that truss is a structural member that is assembled in such a way that forces are applied only on the ends.
They serve a critical function and design depends on various factors.
It uses lower chords that slope inward instead of being horizontal.
A roof truss is considered the most important key component in engineering system in a building.
Of wood used in trusses usually ranges between 1 200 000 and 2 400 000.