While this doesn't directly answer some of the above questions, this article about Chicago's use of hard sleeve on the hydrants is pretty interesting: http://www.firehouse.com/blog/10850756/f...cago-style
As Grumpy mentioned, don't hook the transparent, lightweight stuff to a hydrant - bad things happen.
As Grumpy mentioned, don't hook the transparent, lightweight stuff to a hydrant - bad things happen.
Taylor Goodman
Captain - Henrico County (VA) Division of Fire
Fire Chief - Huguenot VFD, Powhatan, VA
Captain - Henrico County (VA) Division of Fire
Fire Chief - Huguenot VFD, Powhatan, VA