Simpson Strong-Tie MPAI44 - 45-1/2" Masonry Purlin Anchor for I-Joist - Galvanized

Purlin Anchors

The MPAI is a solution for wood-to-concrete and wood-to-masonry connections which satisfies code requirements. This purlin anchor is specifically designed for open-web truss joint connections to concrete or masonry walls. The MPAI features minimum embedment line indicator for ease of installation.

Key Features

• Minimum embedment line indicators for both concrete and masonry installations
• Nailing pattern optimized for an I-joist wood member
• Low design profile minimizes visibility

Material

• 14 gauge

Finish

• Galvanized

Installation

• 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