(a) Fireplaces and similar construction used, or intended to be used for burning fuel in open fires shall be connected to approved chimneys and shall be installed so that nearby or adjacent combustible material and structural members shall not be heated to unsafe temperatures.
(b) Hearths and linings or other parts of fireplaces exposed directly to flame shall be of materials that will not melt, disintegrate, spall or shatter at high temperatures.
(c) Wood mantels and trim on fireplaces shall be placed and attached so that they cannot be heated to unsafe temperatures or ignited by sparks or embers from the fire.