Rebuilding a Deck

Asked March 30, 2018, 4:37 PM EDT

Hello, The deck I'm re-building has some larger lumber 4x12 holding the deck up, cantilevered from the house, My main question is about the stairs: Doubled up 2" x 12" ea. side for stairs stringers, is there a rating system for structual beams under stairs or joists that could be assigned to a class A , B , C
Three sides of the house are standard stucco walls, a barrier between house and deck.
High fire zone. Any Ideas would be appreciated

Santa Cruz County California

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