(425 ILCS 68/20)
    Sec. 20. Truss construction emblem.
    (a) The truss construction emblem shall have a bright and reflective color or be made of reflective material. The shape of the emblem shall be an isosceles triangle and the size shall be 12 inches horizontally by 6 inches vertically. The following letters shall be printed on the emblem in a conspicuous size and color:
    "F" to signify a floor with truss construction;
    "R" to signify a roof with truss construction; and
    "F/R" to signify both a floor and roof with truss construction.
    (b) The emblem shall be permanently affixed to the left of the main entrance door at a height between 4 and 6 feet above the ground and shall be installed and maintained by the building owner.
(Source: P.A. 90-434, eff. 8-16-97.)