Introduction
Définition :
A roof should help in protecting the building against external conditions in order to provide comfort and safety for the building occupants.
When a beam spans between two simple supports and carriers a uniformly distributed load (such as a roof covering) it tends to bend in the centre.
Long span roof construction:
Categories of buildings
Fondamental :
Can a simple span roof support be used for distance in excess of ex. 15m ?
In essence, we want to:
Increase a beam's resistance to bending
Whilst minimizing the self weight of structural member
Maximizing its efficiency both economically and structurally