Questions and Answers for Simpson Strong-Tie DTT ZMAX Galvanized Deck Tension Tie for 2x Nominal Lumber with 1-1/2 in. SDS Screws

A:  Hi Joey, thank you for your message. This is Ricardo with Simpson Strong-Tie. The DTT2Z has a pre-punched hole to accommodate a 1/2" rod. Please be aware that holes cannot be enlarged or modified as this would void any value or warranty on our parts. If you need more information or have additional questions, please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. We look forward to hearing from you.

A:  It makes no sense that a 2 pack costs $30 and the single costs $10. But they are the same item.

A:  Hello CJ, this is McKenzie with Simpson Strong-Tie. Single kit versus 2-pack.

A:  Hello RobG, this is Efrain from Simpson Strong-Tie. Most of the anchor bolts we stock don't have any finish to them but they can be ordered in hot-dipped galvanized. No finish or hot-dipped would be preferred to be used with the ZMAX finish of the DTT. We only recommend a stainless steel anchor when the DTT is also in stainless steel. If you have any further questions feel free to call us at (800) 999-5099. We look forward to hearing from you.

A:  1/8 bit for pre-drilling if you must,or use the slighty smaller simpson deck tie screws , use the longer ones if you are securing to double joists

A:  Hello BTTT, this is Ricardo from Simpson Strong-Tie. Yes, you can predrill. The answer as to what size depends on a couple of different variables such as what type of lumber you are installing them into. For Doug Fir, Spruce Pine Fir, or Hem Fir, 5/32 or 11/64 lead hole. If you have a different material than these, please contact our technical support team at 800.999.5099.

A:  3/4 inch inside, both directions, unless you want to clear the small gussets, then 5/8. see strongtie.com, search for DTT or this letter from Simpson strongtie http://embed.widencdn.net/pdf/plus/ssttoolbox/5gqitb0bde/C-C-2019-p289.pdf

A:  The Centerline (CL) dimension of the DTT2Z is 13/16". Thank you!

A:  More information would be needed. It would depend on what application you are using them for and what code requirement you are using them to satisfy. Please see the Deck Connection and Fastening Guide on our website for further information. The DTT2Z is featured on page 19 for Lateral-Load Connections and pages 20-22 for Guard Post to Deck Framing connections. We recommend that deck designs be approved by the local building department before construction begins. Thank you!

A:  Yes, mine came with the six 1 1/2 inch screws in a bag attached to the tie.

A:  Yes

A:  Yes, the SDS 1/4 x 1 1/2" screws are included with the DTT2Z. Thank you!

A:  Please see the T-GRDRLPST10 technical bulletin on our website. The second application on page 2 details the installation described. Thank you!

A:  You need to offset the two brackets vertically, so the bolts don't interfere with each other. Picture below and a video showing the technique: https://youtu.be/lTRquLcL6Jo?t=7m59s