45 lines
No EOL
2.5 KiB
Markdown
45 lines
No EOL
2.5 KiB
Markdown
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### Ledger Board Fastener Spacing (On Center) at Various Joist's Lengths
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| Fastener | Band Board | 6' | 8' | 10' | 12' | 14' | 16' | 18' |
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|--------------------------------------|-------------|-----|-----|-----|-----|-----|-----|-----|
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| **Lag Screws** | 1" EWP | 24" | 18" | 14" | 12" | 10" | 9" | 8" |
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| | 1 1/8" EWP | 28" | 21" | 16" | 14" | 12" | 10" | 9" |
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| | 2x Lumber | 30" | 23" | 18" | 15" | 13" | 11" | 10" |
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| **Through-Bolts** | 1" EWP | 24" | 18" | 14" | 12" | 10" | 9" | 8" |
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| | 1 1/8" EWP | 28" | 21" | 16" | 14" | 12" | 10" | 9" |
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| | 2x Lumber | 36" | 36" | 34" | 29" | 24" | 21" | 19" |
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| **Through-Bolts w/ 1/2" Stacked Washers** | 2x Lumber | 36" | 36" | 29" | 24" | 21" | 18" | 16" |
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| **Adhesive Anchors** | — | 32" | 32" | 32" | 24" | 24" | 16" | 16" |
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### Notes
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1. These values are valid for deck ledgers consisting of douglas fir/larch, hem/fir, or southern pine; and for band boards consisting of douglas fir–larch, hem–fir, spruce–pine–fir, southern pine, or engineered wood product (EWP).
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2. Where solid–sawn pressure–preservative–treated deck ledgers are attached to engineered wood products (minimum 1" thick wood structural panel band joist or structural composite lumber including laminated veneer lumber), the ledger attachment must be designed in accordance with accepted engineering practice. These tabulated values are in accordance with that practice and are based on 300 lbs and 350 lbs for 1" and 1 1/8" EWP rim board, respectively.
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3. The thickness of the sheathing over the band board must not exceed 15/32".
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4. The maximum gap between the face of the ledger board and face of the wall sheathing is 1/2".
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5. Wood structural panel sheathing, gypsum board sheathing, or foam sheathing is permitted between the ledger board and the band board. Stacked washers are permitted in combination with wood structural panel sheathing, but are not permitted in combination with gypsum board or foam sheathing. The maximum distance between the face of the ledger board and the face of the band board is 1". |