bids are invited for structural analysis laboratory equipment three hinged arch , simple suspension bridge , two hinged parabolic arch , deflection of frames , plastic bending of portals , shear force in a beam , bending moment in a beam , continuous and intermminate beams , deflection of curved bars , deflection of beams and cantivelers , redudant truss , forces in a truss resolution , suspended centre span bridge , pin jointed frameworks , unsymmertrical bending and shear centre , strain measurement for structure , equibrium of forces , buckling of struts , combined shear and bending moment , elastic properties of delected beam appartus , curved member apparatus , elastically coupled beam apparatus total quantity : 22