SIMPSON Strong-Tie Strong-Tie ABA44RZ Adjustable and Standoff Post Bases Instruction Manual
- June 1, 2024
- Simpson Strong-Tie
Table of Contents
SIMPSON Strong-Tie Strong-Tie ABA44RZ Adjustable and Standoff Post Bases
Specifications
- Product: Adjustable and Standoff Post Bases
- Models: ABA/ABU/ABW
- Material: Varies (refer to table for details)
Product Usage Instructions
Installation
To install the bases and caps, follow these guidelines:
ABW Installation
- Place the standoff base.
- Insert the post in the ABW.
- Fasten on three vertical sides using nails or Strong-Drive SD Connector screws.
ABU Installation
- Place the standoff base.
- Insert the post in the ABU.
ABA Installation
- Place the post in the ABA.
Codes
Refer for the Code Reference Key Chart.
FAQ
- Q: Can these products be used with additional corrosion protection?
- A : Yes, these products are available with additional corrosion protection. Refer to page 16 for more information.
Adjustable and Standoff Post Bases
ABA/ABU/ABW
Additional standoff bases are on p. 345.
The AB series of retrofit adjustable post bases provide a 1″ standoff for the post, are slotted for adjustability and can be installed with nails, Strong- Drive® SD Connector screws or bolts (ABU). Depending on the application needs, these adjustable standoff post bases are designed for versatility, cost-effectiveness and maximum uplift performance.
Features
- The slot in the base enables flexible positioning around the anchor bolt, making precise post placement easier
- The 1″ standoff helps prevent rot at the end of the post and meets code requirements for structural posts installed in basements or exposed to weather or water splash
Material: Varies (see table)
Finish: ZMAX® coating and some in stainless steel
Installation
- Use all specified fasteners; see General Notes.
- See our Anchoring, Fastening, Restoration and Strengthening Systems for Concrete and Masonry catalog, or visit strongtie.com 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) or load transfer plate(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.
- See strongtie.com for information on hollow column installation.
ABW
- Place the standoff base and then the post in the ABW and fasten on three vertical sides, using nails or Strong-Drive SD Connector screws
- Bend up the fourth side of the ABW and fasten using the correct fasteners
ABU
- Place the standoff base and then the post in the ABU
- Fasten using nails or Strong-Drive SD Connector screws or bolts
- (ABU88Z, ABU1010Z, ABU1212Z – SDS optional)
ABA
- Place the post in the ABA
- Fasten using nails or Strong-Drive SD Connector screws
- Codes : for Code Reference Key Chart
SD : Many of these products are approved for installation with Strong- Drive Connector screws. See pp. 362–366 for more information.
Allowable Loads — Beam Installation
- 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.
- The specifier is to design concrete and anchorage for uplift capacity.
- Beam depth must be a minimum of 71/4″.
- Shims are required for ABU46Z double 2x (1 shim) and ABU66Z triple 2x (2 shims) installations as shown in the illustration. Additional fastening of the shim to the beam is not required.
- Fasteners: Nail dimensions are listed as diameter by length. for fastener information.
Adjustable and Standoff Post Bases
These products are available with additional corrosion protection.
For stainless-steel fasteners
SD: Many of these products are approved for installation with Strong- Drive® SD Connector screws. for more information.
Allowable Loads — Post Installation
- 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.
- The specifier is to design concrete and anchorage for uplift loads.
- Some ABU products may be installed with either bolts or nails (not both) to achieve table loads. ABU88Z, ABU88RZ, ABU1010Z, ABU1010RZ, ABU1212Z, and ABU1212RZ may be installed with eight 1/4″ x 3″ Strong-Drive SDS Heavy-Duty Connector screws (sold separately) for the same table load.
- All references to bolts are for structural quality through bolts (not lag screws or carriage bolts) equal to or better than ASTM A307, Grade A.
- For higher downloads, pack grout solid under 1″ standoff plate before installation. Base download on column or concrete, according to the code.
- HB dimension is the distance from the bottom of the post up to the first bolt hole.
- 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. See technical bulletin T-C-SCLCLM at strongtie.com for more information.
- Downloads shall be reduced where limited by allowable loads of the post.
- Fasteners: Nail dimensions are listed as diameter by length. for fastener information.
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