Question

Q1) A cantilevered structure (or a structure witn an unsupported end)can only be achieved using a rigid moment connection at one end.

TRUE or FALSE

Q2) A reaction develops where movement is restricted at a support.

TRUE or FALSE

Q3)Trusses are efective as long-spanning structural members because their cross-sectional maximizes flexural strength and stiffness while minimizing weight.

TRUE or FALSE

Answer 1

A cantilevered structure (or a structure witn an unsupported end)can only be achieved using a rigid moment connection at one end

above statement is totally TRUE. since a cantelever beam is a structure with one end unsupported. At supported we get two support reactions. Now external stability will be determined by using equation R-r. To make R-r grater than equal to zero there should be one resisting moment at the support end. So we requaire a rigid moment at one end.

A reaction develops where movement is restricted at a support.

The above statement is totally true. This can be understood by stress-strain concept. When movement is restricted, this generates strain in structure which in return causes stress. Further stress developed is the root cause of reaction. Therefore we can say a reaction develops where movement is restricted at a support.

Trusses are efective as long-spanning structural members because their cross-sectional maximizes flexural strength and stiffness while minimizing weight.

The above statement is also true. As truss is a structure formed by using members connecting pinned in triangular fashion. In this large cross sectional area remains open making it light-weight and covering large area.