commonly referred as cross yarns strut yarns or through the thickness yarns which were subsequently cured in place fig3 is a drawing of the cross section of open structured tubular member 101 in fig2 fig4 is an elevated end view of jacketed yarn 102 exhibiting a true triaxial configuration in which prepreg filaments 113 also referred to as u201c tows u201d that define a yarn core are hexagonally packed within jacketed sheath 110 fig5 is an enlarged elevated side view of an embodiment of jacketed yarn 102 defining a true triaxial configuration which may be used for to form open structured tubular member 101 this orientation is identified by the interlacing of respective helical yarns 106 at a position u201c offset u201d or spaced from their engagement with axial yarns 105 the u201c offset u201d engagement coupled with the over under interlacing demonstrated in fig4 and 5 bestows jacketed yarn 102 and any resulting open structured member 101 with improved structural stability and crush resistance relative to other braided members in a braiding hierarchy tows 113 are collected within jacketed sheath 110 and other yarns for example axial yarns 105 and smaller helical yarns 106 may be braided therearound resulting jacketed prepreg yarn 102 may then be braided to form open structure member 101 is described in the examples below fig8 shows a picture of the prepreg yarns 102 as they transition from the carrier 111 yarn packages to the braid consolidation point fell point not shown of tubular member 101 one skilled in the art will immediately understand that the size and shape of the braid openings as well as the diameter of.