In a tender, the wording they use, bless them. Think they want me to use a turbo nozzle to remove gum.
Which can be done on particular surfaces but it's much faster to use a fan nozzle or a vario nozzle with a slight pin jet on or even wet blasting nozzle which I find pretty good.
The Supplier shall remove all chewing gum and other deposits from all the **********************************************************************************, using a rotary head pressure wash lance or similar approved equipment/method.
The Supplier shall clean all the ********** walkways within the *************, all ************** to the perimeter of the ************** and all ***************, using a wheel mounted rotary head pressure wash or similar approved equipment/method.