BCGBC4010A Apply structural principles to residential low-rise constructions

Structural principles - Structural members

Roof trusses

Truss terminology
A diagram of a roof truss is shown with the following information:
•	Apex - the highest point of the truss
•	Top cord - the piece of timber which runs to the top of the truss
•	Web - is a short timber which runs from the bottom chord to the top chord
•	Panel point - is where the web meets the top chord. It is the strongest point for lifting the truss
•	Heel - is where the bottom chord meets the top chord
•	Bottom chord - is the large horizontal member (timber or steel) at the bottom of the truss
•	Truss span - is the length of the bottom beam that spans the wall frames
•	Pitch - is the angle the top chord makes with the bottom chord
•	Eave overhang - is the horizontal distance the top chord extends from the wall.

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