Tree Climbing Systems DdRT vs. SRT

Arborist Tree Climbing Basics: Climbing Systems DdRT vs. SRT These are the basic concepts of modern tree climbing systems that we use. Moving Rope System, better known as DdRT (Doubled Rope) and Stationary Rope System, better known as SRT. Not comprehensive by any means, I just want to give people a framework for learning these systems, so we are all on the same page. Climb High, Work Smart, Read More. TreeMuggs