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.
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
Varies (see table)
ZMAX® and some in stainless steel; see Corrosion Information
Use all specified fasteners; see General Notes.
See our Anchoring and Fastening Systems for Concrete and Masonry catalog for retrofit anchor options.
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.
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
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.
ABU products may be installed with either bolts or nails (not both) to achieve table loads. ABU88Z, ABU88RZ, ABU1010Z, ABU1010RZ, and ABU1212Z/RZ may be installed with (8) 1/4" x 3" Strong-Drive® SDS Heavy-Duty Connector screws (sold separately) for the same table load.
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.
Downloads shall be reduced where limited by capacity of the post.