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ITEM MATERIAL MINIMUM FINISHICOATING ALTERNATE FINISH/COATING° <br /> Stainless steel,silicon bronze or <br /> Nails and timber rivets In accordance with ASTM F1667 Ho dipped galvanized per ASTM A153 <br /> t <br /> copper <br /> Bolts° In accordance with Hot-dipped galvanized per ASTM A153,Class C <br /> Lag screwsd ASTM A307(bolts), (Class 13 for 3/8-inch diameter and less)or mechanically Stainless steel,silicon bronze or <br /> (including nuts and <br /> ASTM A563(nuts), galvanized per ASTM 6695,Class 55 or 410 copper <br /> washers). ASTM F844(washers) stainless steel <br /> ASTM A653 type GI85 zinc coated galvanized <br /> Per manufacturer's steel or post hot-dipped galvanized per <br /> Metal connectors Stainless steel <br /> specification ASTM A123 providing a minimum average coating <br /> weight of 2.0 oz.Ift2(total both sides) <br /> For SI:1 inch=25.4 mm,1 foot=304.8 mm. <br /> a.Equivalent materials,coatings and finishes shall be permitted. <br /> b.Fasteners and connectors exposed to salt water or located within 300 feet of a salt water shoreline shall be stainless steel. <br /> a Holes for bolts shall be drilled a minimum 1/32 inch and a maximum 1116 inch larger than the bolt. <br /> d.Lag screws 1/2 inch and larger shall be predrilled to avoid wood splitting per the National Design Specification(NDS)for Wood Construction. <br /> e.Stainless-steel-driven fasteners shall be in accordance with ASTM F1667. <br /> R507.2.4 Flashing <br /> Flashing shall be corrosion-resistant metal of nominal thickness not less than 0.019 inch(0.48 mm)or approved nonmetallic <br /> material that is compatible with the substrate of the structure and the decking materials. <br /> R507.2.5 Alternate Materials <br /> Alternative materials,including glass and metals,shall be permitted. <br /> R507.3 Footings <br /> Decks shall be supported on concrete footings or other approved structural systems designed to accommodate all loads in <br /> accordance with Section R301.Deck footings shall be sized to carry the imposed loads from the deck structure to the ground as <br /> shown in Figure R507.3.The footing depth shall be in accordance with Section R403.1.4. <br /> Exception: Free-standing decks consisting of joists directly supported on grade over their entire length. <br />