CBS/CBSQ Column Bases


The CBS column base installs with machine bolts and provides tested capacity. The 1″ standoff (included) meets code requirements for structural posts installed in basements or exposed to weather or water splash. The CBSQ uses Simpson Strong-Tie® Strong-Drive® SDS Heavy-Duty Connector screws, which allow for fast installation, reduced reveal and high capacity, provides a greater net section area of the column compared to bolts.

Material: See table.

Finish: Galvanized, available in HDG with HDG screws.


  • Use all specified fasteners. See General Notes.
  • For CBS, install with two machine bolts.
  • For CBSQ, install 1⁄4″ x 2″ Strong-Drive SDS Heavy-Duty Connector screws, which are provided with the column base. (Lag screws will not achieve the same load.)
  • For full loads, a minimum of 3″ side cover shall be provided.
  • 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).

Ordering: To order with screws, specify CBSQ-SDS2. To order without screws, specify CBSQ.

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