The H40R has three-sided webbing. The thicker braces on the bottom side allow easy mounting of automated luminaires/moving heads and central loading, reducing the torsion effect resulting from one-sided loading in standard trusses.
The spigot orientation follows that of the S series truss, allowing easy assembly while the truss is still on the floor. The H40R measures 339mm high by 239mm wide. The diagonals are placed to allow room for a 30D truss to rest on the bottom chords.
The loading rate is comparable to the H40V, taking into account that, due to the three-sided webbing, lateral forces are limited. The H40R is available in three standard lengths of one, two and three metres, plus a box-corner.
(Jim Evans)
