Product Description
The Simpson CPT44Z CPTZ ZMAX Galvanized Concealed Post Base for 4x4 by Simpson Strong-Tie is engineered to deliver a clean, concealed connection between a 4x4 post and a concrete foundation. Combining a knife plate with a standoff base, this connector achieves a streamlined appearance while providing a code-compliant 1 in. standoff height above concrete - reducing moisture-related decay and meeting requirements for posts exposed to weather, water splash, or basement conditions.
Key Features
- 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: 4x4
- Base: 12 ga.; knife plate: 10 ga.
- ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
- Knife plate, washers, and standoff base are ZMAX galvanized steel; standoff base features an additional textured, flat black powder-coat finish for aesthetic purposes
- The 1/2 in. diameter drift dowels are mechanically galvanized
- Installed with 1/2 in. diameter galvanized pins (supplied)
Specifications
- MPN: CPT44Z
- Brand: Simpson Strong-Tie
- Nominal/Rough Post Size: 4x4
- Coating / Finish: ZMAX
- Gauge: Base 12 ga.; knife plate 10 ga.
- Standoff Height: 1 in.
- Install With: 1/2 in. anchor bolts and supplied dowels
- Width: 3-1/2 in.
- Length: 3-1/2 in.
- Country of Origin: United States
What's Included
Each pack contains (1) CPT44Z Concealed Post Base, 1/2 in. diameter galvanized pins (supplied with connector).
Downloads and Resources
Frequently Asked Questions
- Why does the CPTZ post base have a 1 in. standoff height?
- The 1 in. standoff height is code-required when supporting permanent structures that are exposed to weather or water splash, or in basements. It also reduces the potential for decay at post or column ends by keeping wood from direct contact with concrete.
- What anchorage methods are compatible with the CPT44Z?
- The anchorage for the CPTZ can be either cast-in-place or retrofit with adhesive or mechanical anchors, providing flexibility for both new construction and existing concrete applications.
- Why is ZMAX galvanization used on this post base?
- ZMAX galvanization offers extra corrosion resistance, making the CPT44Z well suited for exterior applications and use with treated wood, where standard galvanization may not provide sufficient protection against the elements.
- What fasteners are needed to install the CPT44Z?
- Installation requires 1/2 in. anchor bolts along with the supplied dowels. The 1/2 in. diameter drift dowels are mechanically galvanized and are included with the connector.
Related Products
Note: Product dimensions and/or screw or bolt holes may differ from picture.
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