For this task $,$ the requirements are: $$ Complete checks to find the support reactions, and establish that the framework is stable and statically determinate. Also, prepare using a suitable scale and annotation a space diagram for the framework.

$$ Use $(1)$ the method of sections, $(2)$ graphical methods $($including calculations$)$ and $(3)$ analytical methods to determine support reactions and primary forces in the central members of a pin jointed structure.

$$ Evaluate the three different techniques you have used to justify the most appropriate methods of finding the forces in the central members of the pin jointed structure. Make sure that all steps have been provided and information such as assumpions, clockwise$/$anticlockwise have been provided. L$1=9$KN; L$2=18$KN; L$3=15$KN;