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 Indiana Administrative Code (Last Updated: December 20, 2016)
 Title 675. FIRE PREVENTION AND BUILDING SAFETY COMMISSION
 Article 675IAC14. ONE AND TWO FAMILY DWELLING CODE
 Rule 675IAC14-4.3. 2005 Indiana Residential Code

  Section 675IAC14-4.3-84. Table R502.2.1; MAXIMUM SPACING OF FASTENERS FOR LEDGERS SUPPORTING DECKS  

Latest version.

  •    Add TABLE R502.2.1 as follows:

    TABLE R502.2.1

    SPACING OF FASTENERS FOR LEDGERS

    SUPPORTING DECKS

    MAXIMUM FASTENER SPACING IN INCHESa, c, f, g

    JOIST SPAN

    6ʹ

    8ʹ

    10ʹ

    12ʹ

    14ʹ

    16ʹ

    18ʹ

    Lag Screwsb, d, e

    30

    23

    18

    15

    13

    11

    10

    Boltsb, e

    36

    36

    34

    29

    24

    21

    19

    aBolts or lag screws shall be a minimum of ½ inch in diameter.

    bAssumes connection directly to 1½ inch thick solid wood or 1⅛ inch thick composite wood band joist or through maximum ½ inch thick wood sheathing to band joist.

    cFlash ledger in accordance with SECTION R703.8(5).

    dLag screws shall fully penetrate the band joist and be staggered to prevent splitting.

    eWashers shall be installed under lag screw heads, bolt heads, and nuts. Carriage bolts shall have a washer under the nut.

    fLedgers shall be anchored to the band joist with a minimum of two fasteners per ledger section with one fastener located not more than 12 inches (30.5 cm) or less than seven bolt diameters from the end of each ledger section.

    gWith a minimum 1⅛ inch (28.6 mm) composite wood band joist, bolts shall be used; lag screws shall not be used.

    (Fire Prevention and Building Safety Commission; 675 IAC 14-4.3-84; filed Jun 13, 2005, 3:00 p.m.: 28 IR 3274, eff 90 days after filing with the Secretary of State; readopted filed Aug 4, 2011, 8:35 a.m.: 20110831-IR-675110254RFA)