{
 "format": "takeoffcraft-pack",
 "version": 1,
 "id": "trade.decking",
 "name": "Decking",
 "packVersion": "0.1.0",
 "trade": "Decking",
 "description": "Wood or composite deck surface with joists, screws, hangers and rim; ledger with fasteners and flashing; beams; footings with posts; guards with balusters; stairs by riser. Spans and sizes come from the IRC deck section or DCA 6. Assemblies only: set your own rates.",
 "author": "CadCraft",
 "license": "CC0-1.0",
 "status": "starter",
 "homepage": "https://getcadcraft.com/addons?kind=pack",
 "csi": [
  "03 30 00",
  "06 10 00"
 ],
 "sources": [
  {
   "id": "irc-r507",
   "title": "International Residential Code, Section R507 Exterior Decks",
   "edition": "2021",
   "publisher": "International Code Council",
   "url": "https://codes.iccsafe.org/"
  },
  {
   "id": "awc-dca6",
   "title": "DCA 6, Prescriptive Residential Wood Deck Construction Guide",
   "publisher": "American Wood Council",
   "url": "https://awc.org/"
  },
  {
   "id": "geometry",
   "title": "Plain geometry: the quantity follows from the measured length, height or area and the stated module (no outside source needed)"
  },
  {
   "id": "irc-r312",
   "title": "International Residential Code, Section R312 Guards and Window Fall Protection",
   "edition": "2021",
   "publisher": "International Code Council",
   "url": "https://codes.iccsafe.org/"
  }
 ],
 "items": [
  {
   "key": "deck-wood-16",
   "type": "area",
   "csi": "06 10 00",
   "group": "Deck surface",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Boards 5-1/2 in wide with 1/8 in gaps: 2.133 LF per SF, 10% waste.",
    "Joists at 16 in o.c. (span them from IRC Table R507.6): 0.75 LF per SF, 10% waste.",
    "Two screws per board at each joist: 3.2 per SF (hidden fasteners per their maker).",
    "Joist hangers: two per joist, counted from the joist length at 12 ft average: hangers = joist LF / 12 x 2.",
    "Rim joists on the outline P (doubled where the drawings say)."
   ],
   "note": "Measure the deck area on the plan.",
   "waste": 0,
   "name": "Deck surface: 5/4 x 6 wood decking, joists 2x8 at 16 in o.c.",
   "unit": "SF",
   "twin": "deck-wood-16-m",
   "components": [
    {
     "name": "Deck boards",
     "unit": "LF",
     "formula": "A*2.1333",
     "waste": 1000
    },
    {
     "name": "Joists 2x8",
     "unit": "LF",
     "formula": "A*0.75",
     "waste": 1000
    },
    {
     "name": "Deck screws",
     "unit": "EA",
     "formula": "ceil(A*3.2)",
     "waste": 500
    },
    {
     "name": "Joist hangers",
     "unit": "EA",
     "formula": "ceil(A*0.75/12*2)",
     "waste": 500
    },
    {
     "name": "Rim joist 2x8",
     "unit": "LF",
     "formula": "P",
     "waste": 1000
    }
   ]
  },
  {
   "key": "deck-wood-16-m",
   "type": "area",
   "csi": "06 10 00",
   "group": "Deck surface",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Boards 5-1/2 in wide with 1/8 in gaps: 2.133 LF per SF, 10% waste.",
    "Joists at 16 in o.c. (span them from IRC Table R507.6): 0.75 LF per SF, 10% waste.",
    "Two screws per board at each joist: 3.2 per SF (hidden fasteners per their maker).",
    "Joist hangers: two per joist, counted from the joist length at 12 ft average: hangers = joist LF / 12 x 2.",
    "Rim joists on the outline P (doubled where the drawings say)."
   ],
   "note": "Measure the deck area on the plan.",
   "waste": 0,
   "name": "Deck surface: 25 x 140 mm wood decking, joists 38 x 184 mm at 406 mm o.c.",
   "unit": "m²",
   "twin": "deck-wood-16",
   "components": [
    {
     "name": "Deck boards",
     "unit": "m",
     "formula": "A*7.0",
     "waste": 1000
    },
    {
     "name": "Joists 38 x 184 mm",
     "unit": "m",
     "formula": "A*2.4606",
     "waste": 1000
    },
    {
     "name": "Deck screws",
     "unit": "EA",
     "formula": "ceil(A*34.4445)",
     "waste": 500
    },
    {
     "name": "Joist hangers",
     "unit": "EA",
     "formula": "ceil(A*2.4606/3.6576*2)",
     "waste": 500
    },
    {
     "name": "Rim joist 38 x 184 mm",
     "unit": "m",
     "formula": "P",
     "waste": 1000
    }
   ]
  },
  {
   "key": "deck-composite-12",
   "type": "area",
   "csi": "06 10 00",
   "group": "Deck surface",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Boards 5-1/2 in wide with 1/8 in gaps: 2.133 LF per SF, 10% waste.",
    "Joists at 12 in o.c. (span them from IRC Table R507.6): 1 LF per SF, 10% waste.",
    "Two screws per board at each joist: 4.2667 per SF (hidden fasteners per their maker).",
    "Joist hangers: two per joist, counted from the joist length at 12 ft average: hangers = joist LF / 12 x 2.",
    "Rim joists on the outline P (doubled where the drawings say)."
   ],
   "note": "Measure the deck area on the plan.",
   "waste": 0,
   "name": "Deck surface: composite decking, joists 2x8 at 12 in o.c.",
   "unit": "SF",
   "twin": "deck-composite-12-m",
   "components": [
    {
     "name": "Deck boards",
     "unit": "LF",
     "formula": "A*2.1333",
     "waste": 1000
    },
    {
     "name": "Joists 2x8",
     "unit": "LF",
     "formula": "A*1",
     "waste": 1000
    },
    {
     "name": "Deck screws",
     "unit": "EA",
     "formula": "ceil(A*4.2667)",
     "waste": 500
    },
    {
     "name": "Joist hangers",
     "unit": "EA",
     "formula": "ceil(A*1/12*2)",
     "waste": 500
    },
    {
     "name": "Rim joist 2x8",
     "unit": "LF",
     "formula": "P",
     "waste": 1000
    }
   ]
  },
  {
   "key": "deck-composite-12-m",
   "type": "area",
   "csi": "06 10 00",
   "group": "Deck surface",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Boards 5-1/2 in wide with 1/8 in gaps: 2.133 LF per SF, 10% waste.",
    "Joists at 12 in o.c. (span them from IRC Table R507.6): 1 LF per SF, 10% waste.",
    "Two screws per board at each joist: 4.2667 per SF (hidden fasteners per their maker).",
    "Joist hangers: two per joist, counted from the joist length at 12 ft average: hangers = joist LF / 12 x 2.",
    "Rim joists on the outline P (doubled where the drawings say)."
   ],
   "note": "Measure the deck area on the plan.",
   "waste": 0,
   "name": "Deck surface: composite decking, joists 38 x 184 mm at 305 mm o.c.",
   "unit": "m²",
   "twin": "deck-composite-12",
   "components": [
    {
     "name": "Deck boards",
     "unit": "m",
     "formula": "A*7.0",
     "waste": 1000
    },
    {
     "name": "Joists 38 x 184 mm",
     "unit": "m",
     "formula": "A*3.2808",
     "waste": 1000
    },
    {
     "name": "Deck screws",
     "unit": "EA",
     "formula": "ceil(A*45.9264)",
     "waste": 500
    },
    {
     "name": "Joist hangers",
     "unit": "EA",
     "formula": "ceil(A*3.2808/3.6576*2)",
     "waste": 500
    },
    {
     "name": "Rim joist 38 x 184 mm",
     "unit": "m",
     "formula": "P",
     "waste": 1000
    }
   ]
  },
  {
   "key": "ledger",
   "type": "linear",
   "csi": "06 10 00",
   "group": "Framing",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Ledger 2x8 treated; two 1/2 in lag screws or bolts every 16 in staggered = 1.5 per LF (IRC Table R507.9.1.3(1) sets the spacing by joist span: check yours).",
    "Flashing over the ledger, 10% for laps."
   ],
   "note": "Draw the ledger along the house.",
   "waste": 0,
   "name": "Ledger board with fasteners and flashing",
   "unit": "LF",
   "twin": "ledger-m",
   "components": [
    {
     "name": "Ledger 2x8, treated",
     "unit": "LF",
     "formula": "L",
     "waste": 1000
    },
    {
     "name": "Ledger lag screws or bolts 1/2 in",
     "unit": "EA",
     "formula": "ceil(L*1.5)",
     "waste": 0
    },
    {
     "name": "Ledger flashing",
     "unit": "LF",
     "formula": "L",
     "waste": 1000
    }
   ]
  },
  {
   "key": "ledger-m",
   "type": "linear",
   "csi": "06 10 00",
   "group": "Framing",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Ledger 2x8 treated; two 1/2 in lag screws or bolts every 16 in staggered = 1.5 per LF (IRC Table R507.9.1.3(1) sets the spacing by joist span: check yours).",
    "Flashing over the ledger, 10% for laps."
   ],
   "note": "Draw the ledger along the house.",
   "waste": 0,
   "name": "Ledger board with fasteners and flashing (metric)",
   "unit": "m",
   "twin": "ledger",
   "components": [
    {
     "name": "Ledger 38 x 184 mm, treated",
     "unit": "m",
     "formula": "L",
     "waste": 1000
    },
    {
     "name": "Ledger lag screws or bolts 1/2 in",
     "unit": "EA",
     "formula": "ceil(L*4.9213)",
     "waste": 0
    },
    {
     "name": "Ledger flashing",
     "unit": "m",
     "formula": "L",
     "waste": 1000
    }
   ]
  },
  {
   "key": "beam",
   "type": "linear",
   "csi": "06 10 00",
   "group": "Framing",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Beam of two 2x10 plies (size it from IRC Table R507.5); posts are counted with the footings."
   ],
   "note": "Draw each beam.",
   "waste": 0,
   "name": "Beam, two 2x10 plies",
   "unit": "LF",
   "twin": "beam-m",
   "components": [
    {
     "name": "2x10 treated",
     "unit": "LF",
     "formula": "L*2",
     "waste": 1000
    },
    {
     "name": "Carriage bolts / structural screws",
     "unit": "EA",
     "formula": "ceil(L/1.333)*2",
     "waste": 0
    }
   ]
  },
  {
   "key": "beam-m",
   "type": "linear",
   "csi": "06 10 00",
   "group": "Framing",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Beam of two 2x10 plies (size it from IRC Table R507.5); posts are counted with the footings."
   ],
   "note": "Draw each beam.",
   "waste": 0,
   "name": "Beam, two 38 x 235 mm plies",
   "unit": "m",
   "twin": "beam",
   "components": [
    {
     "name": "38 x 235 mm treated",
     "unit": "m",
     "formula": "L*2",
     "waste": 1000
    },
    {
     "name": "Carriage bolts / structural screws",
     "unit": "EA",
     "formula": "ceil(L/0.4064)*2",
     "waste": 0
    }
   ]
  },
  {
   "key": "footing-post",
   "type": "count",
   "csi": "03 30 00",
   "group": "Footings and posts",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Footing 12 in diameter x 3 ft deep in a tube form (depth below the frost line: IRC R507.3; size from Table R507.3.1): 3.1416 x 0.5² x 3 / 27 = 0.0873 CY.",
    "Post 6x6 treated, one per footing, with a post base and a post cap."
   ],
   "note": "Count each footing.",
   "waste": 0,
   "name": "Deck footing 12 in x 3 ft with 6x6 post",
   "unit": "EA",
   "twin": "footing-post-m",
   "components": [
    {
     "name": "Concrete",
     "unit": "CY",
     "formula": "N*3.1416*0.25*3/27",
     "waste": 1000
    },
    {
     "name": "Tube form 12 in",
     "unit": "LF",
     "formula": "N*3",
     "waste": 500
    },
    {
     "name": "Post 6x6 treated",
     "unit": "EA",
     "formula": "N",
     "waste": 0
    },
    {
     "name": "Post base",
     "unit": "EA",
     "formula": "N",
     "waste": 0
    },
    {
     "name": "Post cap",
     "unit": "EA",
     "formula": "N",
     "waste": 0
    }
   ]
  },
  {
   "key": "footing-post-m",
   "type": "count",
   "csi": "03 30 00",
   "group": "Footings and posts",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Footing 12 in diameter x 3 ft deep in a tube form (depth below the frost line: IRC R507.3; size from Table R507.3.1): 3.1416 x 0.5² x 3 / 27 = 0.0873 CY.",
    "Post 6x6 treated, one per footing, with a post base and a post cap."
   ],
   "note": "Count each footing.",
   "waste": 0,
   "name": "Deck footing 305 mm x 0.91 m with 140 x 140 mm post",
   "unit": "EA",
   "twin": "footing-post",
   "components": [
    {
     "name": "Concrete",
     "unit": "m³",
     "formula": "N*3.1416*0.1524*0.1524*0.9144",
     "waste": 1000
    },
    {
     "name": "Tube form 12 in",
     "unit": "m",
     "formula": "N*0.9144",
     "waste": 500
    },
    {
     "name": "Post 6x6 treated",
     "unit": "EA",
     "formula": "N",
     "waste": 0
    },
    {
     "name": "Post base",
     "unit": "EA",
     "formula": "N",
     "waste": 0
    },
    {
     "name": "Post cap",
     "unit": "EA",
     "formula": "N",
     "waste": 0
    }
   ]
  },
  {
   "key": "guard",
   "type": "linear",
   "csi": "06 10 00",
   "group": "Guards and stairs",
   "sources": [
    "irc-r312",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Guard 36 in high (IRC R312.1.2), balusters 1-1/2 in with less than 4 in between them (R312.1.3): 5-1/4 in o.c.",
    "Posts at 6 ft at most plus one per run (a starting figure: the guard system’s maker and DCA 6 set it).",
    "Top and bottom rails the length of the run."
   ],
   "note": "Draw each guard run.",
   "waste": 0,
   "name": "Guard: wood posts, rails and balusters, 36 in",
   "unit": "LF",
   "twin": "guard-m",
   "components": [
    {
     "name": "Top rail",
     "unit": "LF",
     "formula": "L",
     "waste": 1000
    },
    {
     "name": "Bottom rail",
     "unit": "LF",
     "formula": "L",
     "waste": 1000
    },
    {
     "name": "Balusters",
     "unit": "EA",
     "formula": "ceil(L*12/5.25)",
     "waste": 500
    },
    {
     "name": "Guard posts 4x4",
     "unit": "EA",
     "formula": "ceil(L/6)+N",
     "waste": 0
    }
   ]
  },
  {
   "key": "guard-m",
   "type": "linear",
   "csi": "06 10 00",
   "group": "Guards and stairs",
   "sources": [
    "irc-r312",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Guard 36 in high (IRC R312.1.2), balusters 1-1/2 in with less than 4 in between them (R312.1.3): 5-1/4 in o.c.",
    "Posts at 6 ft at most plus one per run (a starting figure: the guard system’s maker and DCA 6 set it).",
    "Top and bottom rails the length of the run."
   ],
   "note": "Draw each guard run.",
   "waste": 0,
   "name": "Guard: wood posts, rails and balusters, 914 mm",
   "unit": "m",
   "twin": "guard",
   "components": [
    {
     "name": "Top rail",
     "unit": "m",
     "formula": "L",
     "waste": 1000
    },
    {
     "name": "Bottom rail",
     "unit": "m",
     "formula": "L",
     "waste": 1000
    },
    {
     "name": "Balusters",
     "unit": "EA",
     "formula": "ceil(L/0.13335)",
     "waste": 500
    },
    {
     "name": "Guard posts 4x4",
     "unit": "EA",
     "formula": "ceil(L/1.8288)+N",
     "waste": 0
    }
   ]
  },
  {
   "key": "stair",
   "type": "count",
   "csi": "06 10 00",
   "group": "Guards and stairs",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Per riser of a stair 3 ft wide: three stringers share the risers (a stringer is about 1.3 LF per riser), two treads of 5/4 x 6 x 3 ft, one riser board.",
    "Graspable handrail and guards are their own runs (IRC R311.7.8)."
   ],
   "note": "Count the risers of each stair.",
   "waste": 0,
   "name": "Deck stair, 3 ft wide, per riser",
   "unit": "EA",
   "twin": "stair-m",
   "components": [
    {
     "name": "Stringer 2x12",
     "unit": "LF",
     "formula": "N*1.3*3",
     "waste": 1000
    },
    {
     "name": "Tread boards",
     "unit": "LF",
     "formula": "N*2*3",
     "waste": 1000
    },
    {
     "name": "Riser board",
     "unit": "LF",
     "formula": "N*3",
     "waste": 1000
    }
   ]
  },
  {
   "key": "stair-m",
   "type": "count",
   "csi": "06 10 00",
   "group": "Guards and stairs",
   "sources": [
    "irc-r507",
    "awc-dca6",
    "geometry"
   ],
   "assume": [
    "Per riser of a stair 3 ft wide: three stringers share the risers (a stringer is about 1.3 LF per riser), two treads of 5/4 x 6 x 3 ft, one riser board.",
    "Graspable handrail and guards are their own runs (IRC R311.7.8)."
   ],
   "note": "Count the risers of each stair.",
   "waste": 0,
   "name": "Deck stair, 0.91 m wide, per riser",
   "unit": "EA",
   "twin": "stair",
   "components": [
    {
     "name": "Stringer 38 x 286 mm",
     "unit": "m",
     "formula": "N*0.39624*3",
     "waste": 1000
    },
    {
     "name": "Tread boards",
     "unit": "m",
     "formula": "N*2*0.9144",
     "waste": 1000
    },
    {
     "name": "Riser board",
     "unit": "m",
     "formula": "N*0.9144",
     "waste": 1000
    }
   ]
  }
 ]
}