In 1971 the original ARCO Center towers were built in downtown Los Angeles using a Manning & Lewis Wallglider roof car and platform system. 35 years later, with lack of availability of replacement components and the constant maintenance requirements, it was evident that the technology was in need of some modern updates.
Now referred to as City National Plaza, Sky Rider Equipment Co. was hired to install easy to maintain Building Maintenance Units (BMU’s) on the Paul Hasting and City Plaza Towers. Utilizing a gantry crane, the BMU's were hoisted to the rooftop of each tower, and later used to remove the old machines.
More information about the City National Plaza Building Maintenance Unit project can be found by clicking here.