Type H compact electric transmission line support structure

An electric transmission line support tower, comprising:

• a vertical shaft mounted on a ground surface;
• a crossarm perpendicular to and depending from the vertical shaft on a first side of the vertical shaft, the crossarm comprising:
• a first mounting point;
• and
• a second mounting point located between the first mounting point and the vertical shaft;
• a central mounting support depending from a point on the crossarm that is between the first mounting point and the second mounting point;
• a first structural string connecting the first mounting point to a first conductor bundle attachment point;
• a second structural string connecting the central mounting support to the first conductor bundle attachment point;
• a third structural string connecting the central mounting support to a second conductor bundle attachment point;
• a fourth structural string connecting the second mounting point to the second conductor bundle attachment point;
• a fifth structural string connecting the central mounting support to a third conductor bundle attachment point, where the fifth structural string is oriented perpendicularly relative to the crossarm and extends between the first conductor bundle attachment point and the second conductor bundle attachment point, where the third conductor bundle attachment point is further from the crossarm than the first conductor bundle attachment point and the second conductor bundle attachment point;
• a sixth structural string connecting the vertical shaft to the third conductor bundle attachment point;
• a second crossarm oriented perpendicular to and depending from the vertical shaft on a second side of the vertical shaft that is opposite the first side, the second crossarm comprising:
• a second crossarm first mounting point;
• and
• a second crossarm second mounting point located between the second crossarm first mounting point and the vertical shaft;
• a second central mounting support depending from a point on the second crossarm that is between the second crossarm first mounting point and the second crossarm second mounting point;
• a seventh structural string connecting the second crossarm first mounting point to a fourth conductor bundle attachment point;
• an eighth structural string connecting the second central mounting support to the fourth conductor bundle attachment point;
• a ninth structural string connecting the second central mounting support to a fifth conductor bundle attachment point;
• a tenth structural string connecting the second crossarm second mounting point to the fifth conductor bundle attachment point;
• an eleventh structural string connecting the second central mounting support to a sixth conductor bundle attachment point, where the eleventh structural string is oriented perpendicularly relative to the second crossarm and extends between the fourth conductor bundle attachment point and the fifth conductor bundle attachment point, where the sixth conductor bundle attachment point is further from the second crossarm than the fourth conductor bundle attachment point and the fifth conductor bundle attachment point;
• and
• a twelfth structural string connecting the vertical shaft to the sixth conductor bundle attachment point.