Is assumed to resist all the flexural tension from the diaphragm in-plane bending moment resulting from the lateral load. Also called drag struts or ties, are diaphragm framing members that collect diaphragm shear forces from laterally unsupported areas to vertical resisting elements. For more details download the CAD file from our cadbull website. This can be used by architects and engineers. Download this 2d AutoCAD drawing file.