Any new or existing commercial, industrial, or multiunit residential structure of three units or more, which uses horizontal or vertical light-frame truss-type or truss construction in any portion shall be marked with an approved symbol. Townhouses are not multiunit residential structures and therefore not subject to this rule. Each approved symbol shall include within the center circle one of the following designations:
(a) Structures with light-frame truss roofs shall be marked with the letter "R."
(b) Structures with light-frame truss floor systems shall be marked with the letter "F."
(c) Structures with light-frame truss floor and roof systems shall be marked with the letters "RF."
(d) Structures with steel bar joist truss roofs shall be marked with the letters "BR."
(e) Structures with steel bar joist truss floor systems shall be marked with the letters "BF."
(f) Structures with steel bar joist truss floor and roof systems shall be marked with the letters "BRF."
(g) Structures where wood or steel bowstring truss roof systems shall be marked with the letters "BOW."
(Ord. 2014-50, passed 10-21-2014)