The Simpson Strong-Tie DTT2Z-SDS2.5 ZMax® Tension Tie with 2-1/2" Screws is a safe, cost-effective way to attach deck-railing posts to the deck framing. Because the post is tied back into the deck joists, rather than to the rim joist alone, the connection is stronger than typical through-bolt installations and complies with IRC and IBC code requirements regarding handrail and guardrail post connections for decks. The DTT2Z also complies with the new IRC requirements for laterally tying the deck to the house. Additionally, the versatile DTT2Z is load rated as a holdown for light-duty shearwalls and braced wall panel applications. The DTT2Z fastens easily to a single 2x joist or stud using Simpson Strong-Tie® Strong-Drive® SDS screws (included) and accepts a 1/2" machine bolt or anchor bolt.
The DTT2 is ideal for two critical deck connections:
Guardrail-Post Connection
- Ties the guardrail post into deck framing
- Stronger and safer than nails, lag screws or bolts
- Meets provisions set in the International Residential Code® (IRC) for guardrail reinforcement (Table R301.5)
- Single post-to-deck connection tested for the concentrated load specified in ICC-ES acceptance criteria for Handrails and Guards (AC273)
Lateral-Load Connection
- Ties the deck into the house for a stronger, safer ledger connection
- Helps prevent a common type of deck failure
- Meets provisions set by the 2009 International Residential Code® (IRC) for lateral deck-to-house connections (R502.2.2.3)
- Includes: (8) 1/4" x 2-1/2" SDS Structural Screws
- Finish: ZMax® G185 Galvanizing
- Material: 14 Gauge
- Anchor Bolt/Clearance: 1/2"/13/16"
- Height: 6-15/16"
- Width (Top): 3-1/4"
- Width (Base): 1-5/8"
ZMax® Galvanized Coating Information
ZMax® Coating is a thicker coating (galvanized per ASTM A653 with a G185 coating) than the standard hot-dip galvanized coating (galvanized per ASTM A653 with a G90 coating). This thicker coating is available on select Simpson Strong-Tie connectors. Due to this increased galvanized thickness these connectors would be expected to have a longer service life than standard galvanized connectors.
Level of Corrosion Resistance: Medium
Explanation of "Simpson Ships Direct" Availability
Direct Shipments from Simpson Strong-Tie are products Simpson stocks in many of their warehouses. They will be ordered to ship directly to your location as soon as we receive your order. Simpson usually ships in 2-4 business days after they receive our purchase order. Additionally, expedited orders are not guaranteed to process sooner than the standard 2-4 business days. We will immediately notify you with the tracking information as soon as we receive it. If you have specific time related needs we encourage you to call our sales department direct at 800-323-2999 for more information.
Additional Simpson Strong-Tie Information
If there are any items on the
Simpson Strong-Tie Website that you do not see on the DHC Supplies website we will gladly special order them. Most special order Simpson items ship the same or next business day as long as there is stock available. Call us at 800-323-2999 for pricing and availability.
Possible Free Shipping! Orders (Continental USA Only) of Simpson Strong-Tie items only that total $2200.00 or more may ship free depending on location, type of business and the type of Simpson products required. Additional products will be charged standard shipping if applicable. Please call 800-323-2999 to see if your order qualifies.