ESFR system materials tend to cost more than control mode systems (larger pipe sizes, more expensive sprinkler heads). Also, in most cases an ESFR system will require the installation of a fire pump, which is not always required for a control mode system. sprinkler systems are not required.
Definition of flay. 1 : to strip off the skin or surface of : skin The hunter flayed the rabbit and prepared it for cooking. 2 : to criticize harshly : excoriate He was flayed by the media for his controversial comments.
Slay is defined as to kill or destroy in a violent way, or is slang meaning to impress or amuse. 1  An example of slay is to kill a vampire. 2  An example of slay is to tell ten hysterical jokes one right after another. 3  to kill or destroy in a violent way.  Slang to impress, delight, amuse, etc. with overwhelming force.