GHS/Physics/PROPERTIES OF MATERIALS

GIRDERS
To proceed with this lesson, the learner should be conversant with the terms 'Tension' and 'Compression'

A girder is a beam or straight part of a structure.

Types of girders;
 * 1) Struts
 * 2) Ties

Struts and Ties
Beams are categorised depending on the impact of the forces acting on a structure.

Identifying Struts and Ties
To identify ties and struts we look at the structure before us and imagine it with the girder in question removed. If the end points appear to move adrift (apart) then the girder is tie i.e it is in tension. If the points move towards each other,then the girder is a strut i.e it is compression.





Applications of Struts and Ties
In this section we shall try to link what we have studied in the previous sections to our daily life experiences.