ABA Adjustable Post Base
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Product Details
The ABA is designed to attach wooden posts to existing concrete. The built-in 1" standoff of this adjustable post base helps to prevent rot at the end of the post. The ABA has a slotted anchor hole in the base for adjustability and attaches to the post with nails or Strong-Drive® SD Connector screws. This versatile post base makes a cost-effective option for securing a post to the foundation.
Key Features
- The slot in the base enables flexibility around the anchor bolt, making precise post placement easier
- 1" stand-off design meets code requirements for structural posts installed in basements or exposed to weather or water splash
- Increased uplift loads for earthquake or wind loading
Material
- See table
Finish
- ZMAX®; see Corrosion Information
Installation
- Use all specified fasteners; see General Notes.
- See our Anchoring, Fastening and Restoration Systems for Concrete and Masonry catalog for retrofit anchor options, such as Titen HD®, Stainless-Steel Titen HD or SET-3G™.
- 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 or unbraced carports).
- Place the base, cut washer(s) and nut(s) on the anchor bolt(s). Make any necessary adjustments to post placement and tighten the nut securely on the anchor bolt.
- Place the post in the ABA and fasten using nails or Strong-Drive SD Connector screws.
Related Literature
Product Information Table
| Model No. | Nominal Post Size | Ga. | W (in.) | H (in.) | L (in.) | Coating/Material | Packaging Qty. |
|---|---|---|---|---|---|---|---|
| ABA44RZ | 4x4 rough | 16 | 4 1/16 | 2 13/16 | 3 1/8 | ZMAX® | 1 |
| ABA44Z | 4x4 | 16 | 3 9/16 | 3 1/16 | 3 3/8 | ZMAX® | 1 |
| ABA46RZ | 4x6 rough | 14 | 4 1/16 | 2 7/8 | 5 3/16 | ZMAX® | 1 |
| ABA46Z | 4x6 | 14 | 3 9/16 | 3 1/8 | 5 3/16 | ZMAX® | 1 |
| ABA66RZ | 6x6 rough | 14 | 6 | 2 7/8 | 5 3/16 | ZMAX® | 1 |
| ABA66Z | 6x6 | 14 | 5 1/2 | 3 1/8 | 5 3/8 | ZMAX® | 1 |
Load Tables
Allowable Loads — Post Installation
These products are available with additional corrosion protection.
Many of these products are approved for installation with Strong-Drive® SD Connector screws.
| Model No. | Nominal Post Size | Material (ga.) | Dimensions (in.) | Fasteners | Allowable Loads (DF/SP) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Base | Strap | W | L | H | Anchor Dia. (in.) | Nails (in.) | Uplift | Down (100) | ||
| ABA44Z | 4x4 | 16 | 16 | 3 9/16 | 3 3/8 | 3 1/16 | 1/2 | (6) 0.148 x 3 | 690 | 5,925 |
| ABA44RZ | Rough 4x4 | 16 | 16 | 4 1/16 | 3 1/8 | 2 13/16 | 1/2 | (6) 0.148 x 3 | 655 | 7,215 |
| ABA46Z | 4x6 | 14 | 14 | 3 9/16 | 5 3/16 | 3 1/8 | 5/8 | (8) 0.162 x 3 1/2 | 870 | 10,500 |
| ABA46RZ | Rough 4x6 | 14 | 14 | 4 1/16 | 5 3/16 | 2 7/8 | 5/8 | (8) 0.162 x 3 1/2 | 870 | 10,695 |
| ABA66Z | 6x6 | 14 | 14 | 5 1/2 | 5 3/8 | 3 1/8 | 5/8 | (8) 0.162 x 3 1/2 | 850 | 10,245 |
| ABA66RZ | Rough 6x6 | 14 | 14 | 6 | 5 3/16 | 2 7/8 | 5/8 | (8) 0.162 x 3 1/2 | 850 | 11,500 |
- Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
- Downloads may not be increased for short-term loading.
- Specifier is to design concrete and anchorage for uplift capacity.
- For higher downloads, pack grout solid under 1" standoff plate before installation. Base download on column or concrete, according to the code.
- Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. For SCL columns, the fasteners for these products should always be installed in the wide face.
- Downloads shall be reduced where limited by capacity of the post.
- Fasteners: Nail dimensions in the table are listed diameter by length. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.
Load Values with Strong-Drive® SD Connector Screws
| Model No. | Dimensions (in.) | Fasteners (Quantity-Size/Type) |
Allowable Loads (lbs)1,2 | ||||
|---|---|---|---|---|---|---|---|
| W | L | H | Anchor Diameter (in.) |
Post | Uplift CD=1.6 |
Downloads CD=1.0, CD=1.5, CD=1.25 |
|
| ABA44 | 3 9/16 | 3 1/8 | 3 1/16 | 1/2 | 6-SD9112 | 610 | 6,000 |
| ABA44R | 4 1/16 | 3 1/8 | 2 13/16 | 1/2 | 6-SD9112 | 610 | 8,000 |
| ABA46 | 3 9/16 | 5 3/16 | 3 1/8 | 5/8 | 8-SD10112 | 940 | 9,435 |
| ABA46R | 4 1/16 | 5 3/16 | 2 7/8 | 5/8 | 8-SD10112 | 940 | 12,000 |
| ABA66 | 5 1/2 | 5 1/4 | 3 1/8 | 5/8 | 8-SD10112 | 970 | 10,665 |
| ABA66R | 6 | 5 3/16 | 2 7/8 | 5/8 | 8-SD10112 | 970 | 12,665 |
- Tabulated allowable loads have been adjusted for load duration factors, CD, as shown, in accordance with the NDS, and are not permitted to be adjusted for other durations.
- Anchor bolts and concrete footings must be capable of resisting all loads and forces transferred from the post base connector.
Code Reports & Compliance
Drawings
| DWG | DXF | RFA | IFC | SAT | |||
|---|---|---|---|---|---|---|---|
