In {TAIL ~ this embodiment}, {HEAD ~ the cross members} 50 are re designated individually as diagonal members 50 d and as vertical members 50 v for the sake of descriptive simplicity, but are for all intents and purposes are materially equivalent to the cross members 50 as shown in FIGS 1 5 
In
In { TAIL ~ this embodiment } , { HEAD ~ the cross members } 50 are re designated individually as diagonal members 50 d and as vertical members 50 v for the sake of descriptive simplicity , but are for all intents and purposes are materially equivalent to the cross members 50 as shown in FIGS 1 5
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH