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GLB5A Beam Seat

Simpson Strong-Tie

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Retail Price: $175.67
Sale Price: $130.13
Usually ships the same business day
Gray Primer
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Product Overview

GLB5A Beam Seat

The GLB is designed to support and connect glulam, sawn lumber or engineered wood beams to structural concrete or concrete masonry unit (CMU) pilasters. The rectangular, steel-plate seat features two vertical plates that secure the beam with one or two bolts and has two #6 by 12"-long rebar for placement in forms before concrete is poured. This glulam beam seat provides necessary bearing capacity at structural walls.

Key Features

  • Designed for cast-in-place applications
  • Provides additional bearing for beam connections
  • Steel plate provides barrier for wood from masonry


  • Simpson Strong-Tie gray paint. Hot-dip galvanized available; specify HDG.


  • Use all specified fasteners; see General Notes
  • Bolt hole diameters in wood shall be a minimum of 1/32" to a maximum of 1/16" larger than the bolt diameter (per the 2015/2018 NDS)
  • Check the rebar spacing requirements on all installations


  • Beam seats for sawn timber and other sizes may be ordered by specifying special dimensions; use the letter designations shown on the illustrations
  • Specify if two-bolt GLB model is desired; see illustration


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