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Installation Options for Deck Lateral Load Connections <br /> (house wall framing 24" <br /> not shown) 8th"Typ.Spacing DTT1Z—750-Pound Assembly (cont.) <br /> 3" 1"Typ. 1%2" <br /> Condition 3—Wall Plate Is <br /> Joist Below Bottom of Deck Joist <br /> Extension <br /> ® ° ° (31/a"Max.) The DTT1Z has been tested <br /> with the blocking assembly <br /> - shown in Figures 5A and 513, <br /> 1/2 <br /> which allows the holdown to <br /> shown f clarity) of no I be lowered up to 33/4"below <br /> of to Centerline DTT1Z Anchor the bottom of the deck joist <br /> 6-Strong-Drive®SDWS TIMBER Figure 5A Figure 5B in order to anchor into the <br /> Screws(Model No.SDWS23000DB) (side view) (end view) center of a wall plate. <br /> 2x8x24"Blocking for Extensions up to 1a/a" <br /> 2x10x24"Blocking for Extensions up to 3a/a" <br /> Condition 4—Wall Stud Receiving <br /> Anchor Does Not Align with Deck Joist <br /> ;r1Z <br /> 1IW �° � �° The DTT1Z may be positioned on <br /> Deck Ledger horizontal 2x8 blocking that can be <br /> installed between two deck joists,as <br /> shown in Figures 6A and 6B.This <br /> ° allows the holdown to be centered on a <br /> 2-Strong-Drive®SDWS TIMBER Extend Screws(Model No.SDWS22400DB) wall stud that does not align with a deck <br /> 4"Min. into each joist joist.Alternatively,an additional deck <br /> Each Side 2x8 Blocking joist can be added to the deck to align <br /> Figure 6A Figure 6B Center DTT1Z on Wall Stud with a wall Stud (not shown). <br /> (wall sheathing not shown for clarity) <br /> (side view) (end view) <br /> (House wall framing <br /> not shown) <br /> FDTT1Z Condition 5—Joist Hanger Flanges <br /> Interfere with Screw Anchor <br /> ® ® In some cases it may be necessary to <br /> 2" position the DTT1Z in a location that <br /> 12" conflicts with a joist hanger or other <br /> w 3Y2"Typ.J L 4-Strong-DrivelSDWS TIMBER obstruction. Figures 7A and 7B detail an <br /> Screws(Model No.SDWS2230oDB) assembly that allows the DTT1 Z to be <br /> (Siding not L <br /> � shown for clarity) 2x4x12"Blocking installed 11/2"away from the face of the <br /> Figure 7A Figure 713 deck joist. <br /> (side view) (end view) <br /> E <br /> 25e'Min.Anchor <br /> S Embedment <br /> 3-K"Min.to <br /> top of concrete <br /> °, <a•a Condition 6—Ledger Attaches to Concrete Foundation Wall <br /> ®®®®® As an alternative to using a Strong-Drive®SDWH Timber-Hex HDG <br /> s4 screw or fully threaded a/8"lag screw,the DTT1Z may be anchored with <br /> a 3/8"mechanically galvanized Wedge-AII°anchor(as shown in Figure 8) <br /> 3rs"x7"Mechanically Galvanized .'o '. to achieve the 750-pound load requirement. <br /> Wedge-AII®Anchor <br /> (Model WA37700MG) <br /> Figure 8 <br /> Condition 7— Floor Joist Framing Is Perpendicular to the Deck Joist(Not Shown) <br /> The IRC states that the 750-pound holdown detail is"applicable where the floor joists are parallel to deck joists." <br /> For floor joists perpendicular to deck joists, refer to Condition 2 for the DTT2—1,500-Pound Assembly on the next page. <br /> 3 <br />