Georgia Amendments Prescriptive Deck Details - Lateral Support

05/23/12 Georgia Amendments- Prescriptive Deck Details Sheet 12 of 22
FRAMING AT CHIMNEY OR BAY WINDOW
All framing at a chimney or bay shall be constructed in accordance with FIGURE 21 and the requirements
below.
• Header size shall be equal to the joist size.
• When the chimney or bay window is deeper than 3'-0", install a 6x6 post with footing per the
requirements on Sheet 8 below each triple joist at the location of the header connection.
• When the header is longer than 6'-0", install 6x6 posts with footing per the requirements on Sheet
8 below the header to reduce the span to less than 6'-0".
• Post footings must meet the requirements on Sheet 8.
• Joist hangers shall be specifically designed to accommodate the number of members identified in
FIGURE 21.
PLAN VIEW
SECTION
decking may
extend 6" maximum
3' max.
Note: joist hangers shall be sized for the number of plies supported
3-ply
1
joist,
each side
3-ply
1
joist
2 ledger board interior
fasteners on each side of
chimney or bay window
2
6'-0" maximum
chimney or
bay window
ledger
board
ledger
board
2-ply header
chimney
or bay
window
FIGURE 21: REQUIREMENTS FOR FRAMING AT CHIMNEY OR BAY WINDOW
1
May be reduced to 2-ply joists if joist spacing = 24" on center, joist span ≤ 8'-6" or chimney/bay window depth ≤ 18".
2
Fasteners adjacent chimney/bay window are considered interior to the ledger board. See FIGURE 20 for fasteners requirements
at the end of the ledger board.
LATERAL SUPPORT
All decks greater than 4'-0" above grade shall resist lateral loading by providing diagonal bracing as shown
in FIGURE 22 and in accordance with the following:
• Diagonal bracing shall be 2x4 minimum.
• Decks shall have diagonal bracing installed at beam locations.
• Free-standing decks shall also have diagonal bracing installed parallel to joists at each post location
in accordance with FIGURE 23.
• Only one type of diagonal bracing shall be provided in each beam line as identified in FIGURE 22
and each joist line as identified in FIGURE 23.
• Connection of diagonal bracing shall be in accordance with FIGURE 24.