Burj Khalifa world's record BMU's by CoxGomyl , aka Burj Dubai

Burj Khalifa BMU's by CoxGomylTo service the facades of the 828 m high structure, 3 permanent parapet mounted BMUs were installed at each of Levels 40, 73 and 109. These track-mounted and telescoping systems are operate on a horizontal track which has been installed on Burj's exterior façade. The machines are very flexible in their operation and are able to luff, telescopic, hoist, slew and