Roof Ladder 4 : A single-section ladder with hooks on one end. The hooks are put over the ridge or peak of a roof to hold the ladder in place. Compare with aerial ladder and ground ladder
Wikipedia, The Free Encyclopedia, Glossary of firefighting equipment, Wikimedia Foundation, http://en.wikipedia.org/wiki/Glossary_of_firefight ing_equipment, CA, USA 2012. (Fr Srvc - Amer) {509}