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Thurston County Resource Stewardship Department 2000 Lakeridge Dr SW; Olympia, WA 98502 Phone: (360) 786-5490; TDD: (360) 754-2933
FAX (360) 754-2939 Website: www.co.thurston.wa.us/permitting
12’−0" MAX
12’−
0" M
AX
1 2
3
2x RIM
P.T. 2x LEDGER
FLASHING
FASTENERS USED IN P.T. WOOD MUST BE AS SPECIFIED BY WOOD MFR
1/2"x5" LAG SCREWS w/ WASHER (*), 2” FROM BOTTOM OR TOPOF DECK LEDGER AND2”-5” FROM ENDSSTAGGERED ALONGLEDGER
P.T. 2x DECK JOIST
6" MIN CONC PAD BELOW POST
3’−6" MIN x 18" DIA HOLE. BACKFILL WITH CONCRETE
P.T. 6x6 POST
METAL POST CAP (*)
P.T. DECK BEAM
MIN 8d AT 6" O.C.
P.T. 2x RIM JOIST
18" DIA.
LAGS INTO MANUFACTURED LUMBER MUST HAVE APPROVAL DOCUMENTATION OR HAVE SOLID WOOD RIM BACKING w/ PENETRATING LAG SCREWS
SIDING OVER FLASHING
TC Figure 20 Deck Construction 2/23/11
WHEN P.T., DECK LEDGERS MUST BE ATTACHED TOMINIMUM 1” THICK ENGINEERED WOODPRODUCT. THE LEDGER ATTACHMENT MUST BE DESIGNED (ENGINEERED).
*
15/32” MAXIMUM SHEATHING
6’
30”
REQUIRED LEDGER CONNECTION FOR EXT. - STAGGERED DECKS USING MIN 1/2” LAG SCREWS w/ WASHERS
8’
23”
10’
18”
12’
13”
JOIST SPAN
SPACING OFLAG SCREWSWITH 15/32”SHEATHING