Please show your work Structural analysis 2. Trusses are only statically determinate or indeterminate with respect to internal members? a. True b, False Solution false static indeterminacy is of 2 types 1.External--It is related with the support system of the structure and is equal to number of external reaction components in addition to number of equilibrium conditions. for 2D truss De = Re - 3 2.Internal--It refers to geometric stability of the structure. for 2D truss Di = m-(2j-3).