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PA Purlin Anchor and Strap-Tie Holdown

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The PA is a solution for CFS-to-concrete and concrete-block connections. To support code requirements, the PA is designed to connect roof purlins to a masonry exterior wall. This purlin anchor features a dual-embedment line that allows for installation in concrete or concrete block (GFCMU).

Key Features

  • Minimum embedment line indicators for both concrete and concrete block installations
  • Screw pattern optimized for flange attachment
  • Low design profile minimizes visibility


  • 12 gauge


  • Galvanized or ZMAX® coating


  • Use all specified fasteners; some models have extra fastener holes. See General Notes.
  • Purlin anchor must hook around rebar.
  • Allowable loads are for a horizontal installation into the side of a concrete or masonry wall.
  • Strap may be bent one full cycle. (Bent vertical 90° then bent horizontal.)

Edge Distance: Minimum concrete edge distance is 5″. Minimum concrete block left-to-right edge distance is 20″.

Concrete Block Wall: The minimum wall specifications are:

A — one # 4 vertical rebar, 32″ long, 16″ each side of anchor
B — two courses of grout-filled block above and below the anchor (no cold joints allowed)
C — a horizontal bond beam with two #4 rebars, 40″ long, a maximum of two courses above or below the anchor
D — minimum masonry compressive strength, f’m = 1,500 psi

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