A building Maintenance unit (BMU) is a programmed, remote-controlled, or mechanical gadget, normally suspended from the rooftop, which moves efficiently over some surface of a structure while conveying human window washers or mechanical robots to keep up or clean the secured surfaces. Building Maintenance Unit (BMU) in the UAE are quite often situated over the outside of a structure, however can likewise be utilized on inside surfaces, for example, extensive roofs (e.g. in stadiums or train stations) or chamber dividers. The Building Maintenance Unit, or BMU, is a definitive answer for extremely tall and captivatingly planned structures. They can be introduced on the principle rooftop on a track framework or on an altered stationary position. Telescopic blasts can be accommodated to out-compass up to 130 feet. Since raising drums and engines are situated on the rooftop, the stage is lightweight, and can be planned with extraordinary "methodology" frameworks to position the stage underneath building overhangs. This framework totally takes out the requirement for bolster hardware, for example, attachments and davits, on lower rooftops or galleries. They incorporate the Long Boom style and the Twin Boom style. As can be found in this segment, numerous varieties of both styles are accessible to meet the necessities of any building outline. On structures with couple of projections, for example, galleries or porches, or where it is conceivable to position the track near the rooftop edge, the BMU will cover most prerequisites, with an effort of up to 15m. Every machine is totally offset consolidates a pivoting head to guarantee that the support stays parallel to the building face at all focuses. The most widely recognized choices offered with BMU’S are stage rotation, collapsing blasts for moving and stopping, lifting loads on roof tops and control though suspension wire ropes.