Class A roof assemblies are those that are effective against severe fire test exposure.

Structural standing-seam metal panel roof systems shall be tested in accordance with ASTM E1592 or FM 4474

ind loads on clay and concrete tile roof coverings shall be in accordance with Section 1609.5.

Roof decks shall be covered with approved roof coverings secured to the building or the structure in accordance with the provisions of this chapter.

This code implies that scuppers are an acceptable form of roof drainage.

Clay roof tile shall comply with ASTM C 1167.

Liquid-applied roofing shall have a design slope of a minimum of 1/4 unit vertical in 12 units horizontal.

The installation of liquid-applied roofing shall comply with the provisions of this section.

This code implies that all roof materials that pass the testing provided in the ASTM E 108 fire testing under the light category are identified as Class C roof assemblies.

Roof replacements shall comply with Section C402.1.3, C402.1.4, C402.1.5 or C407 where the existing roof assembly is part of the building thermal envelope and contains insulation entirely above the roof deck.