CPTZ ZMAX Galvanized Concealed Post Base for 6x6 Nominal Lumber
- ZMAX-galvanized coating for enhanced corrosion resistance
- Concealed design for a clean and modern post-to-base connection
- Compatible with nominal lumber sizes for versatile applications
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Product Details
About This Product
The CPTZ post base incorporates a knife plate with a standoff base. It achieves a clean, concealed look while providing a 1-in standoff height above concrete. The CPTZ is installed with 1/2-in diameter galvanized pins (supplied).
Highlights
- The 1-in standoff height is code-required when supporting permanent structures that are exposed to weather or water splash, or in basements
- The standoff reduces the potential for decay at post or column ends
- The anchorage for the CPTZ can be either cast-in-place or retrofit with adhesive or mechanical anchors
- Nominal post size: 6x6
- Base: 12-gauge; knife plate: 10-gauge
- ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
- Install with 1/2 in. anchor bolts and supplied dowels
- Shop all Simpson Strong-Tie products
- Return Policy
Product Information
Specifications
Dimensions: H 5.72 in, W 5.38 in, D 5.38 in
Dimensions
Nominal Post Size (in.) | 6x6 |
|---|---|
Product Depth (in.) | 5.38 in |
Product Height (in.) | 5.72 in |
Product Width (in.) | 5.38 in |
Details
Base Type | Standoff Post Base |
|---|---|
Connector Finish | G185 Galvanized |
Fasteners Included | Fasteners Not Included |
Features | No Additional Features |
Gauge | 12 |
Material | Steel |
Material Connector Compatibility | Wood to Wood |
Package Quantity | 1 |
Product Weight (lb.) | 3.66 lb |
Returnable | 90-Day |
Warranty / Certifications
Manufacturer Warranty | Limited Warranty |
|---|
Questions & Answers
what is the thickness and height of the "FIN" plate. I'm looking for options to mortise the post instead of cutting a groove.
Hi Rick, thank you for your message. The CPT66Z is 12 ga. material and has a height of 5.75". Unfortunately, I cannot recommend installing the knife blade any other way than by cutting slot into the post per our instructions. 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.
What is the max side load for a 6x6 5ft tall post using this anchor??
Hi jarhead74, this is Colin from Simpson Strong-Tie. I believe you are referring to the F1 lateral load which would be 1025#. However, you can verify by viewing the load tables for the CPTZ on our website at www.strongtie.com. Type in "C-C-2021" in the searchbox and hit enter. This will direct you to our Wood Construction Connectors Catalog. See pages 70-71 for those CPTZ load tables. If you need more information or have additional questions, please contact the Simpson Strong-Tie Customer Service team at 800-999-5099. Thank you.
Great video, but the anchors mentioned, where do I find them? NPBZ, I believe they're called?
Hey Gazebobuilder, this is Ricardo with Simpson Strong-Tie. There are several videos that I saw on Home Depot's website. The one that I think you are referring to is the one which shows our Titen HD line of anchors for anchoring into the concrete. We do have these available in a 1/2" diameter and they come in different lengths. We (Simpson) do not specify the depth of embedment, this is up to the designer to do so. If you would like to discuss this further, please contact our Technical Support Team at 800-999-5099. Hope you have a great Friday!
Home Depot
Can this product be used on rough cut / actual dimension 6x6 post?
It would hang over the base
Hi Luis, thank you for your message. We want to make sure we address your question regarding the CPTZ Concealed Post Tie. The CPT66Z is sized for sawn cut 6x6 posts(5-1/2" dimensional lumber) if you were to use a rough cut 6x6 with the CPT66Z the base would be able to transfer the full published loading but the base would hang over the edges, this is an aesthetic decision for you to make as structurally the connection is ok. 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. - Stacy
Can these be used for a free standing pergola?
Hello, this is McKenzie with Simpson Strong-Tie. If all installation instructions are followed, the CPTZ can be used for a free standing Pergola. Keep in mind, although the CPTZ does resist some lateral forces, this post base does not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non-top-supported installations, and these moment forces must be addressed elsewhere. I hope this helps and good luck with your project!
Yes having a drill press helps important to drill straight
Yes Provided you bolt the plates down to a good footing for uplift prevention
how this product is attached to the floor.
The CPT66Z anchors to the concrete with 2 - 1/2" diameter anchors. It is up to the Designer to specify the anchor bolt type (i.e. cast-in-place, mechanical, adhesive), length and embedment. Thank you!
Can PL Premium Construction Adhesive be used to anchor this product to a concrete porch and steps?
We can only support the installation as designed/rated. The CPT66Z is rated using 2 - 1/2" diameter anchors to the concrete. Thank you!
I really like the idea of these post base because I did not want any hardware showing on the base of my newly installed 6 x 6 post leading to my front door. However; my contractor hated them & we gave up on trying to use these. it was diffident to get the 3 metal plugs to align perfectly.
Is this base appropriate for attaching a wooden handrail to a concrete porch and steps?
Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non-top-supported installations (such as fences, railings or unbraced carports). We do not have a base to recommend for railing applications to existing concrete. Thank you!
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Customer Reviews
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