112) The degree of static indeterminacy of a rigid-jointed space frame is [where m, r and j have their usual meanings]

113) The degree of kinematic indeterminacy of a pin-jointed space frame is [where j is number of joints and r is reaction components]

114) The number of independent displacement components at each joint of a rigid-jointed space frame is

115) If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is

116) The principle of virtual work can be applied to elastic system by considering the virtual work of