Use and Care Manual

Holdowns

MiTek

Product Catalog

HPA / PA / PAI Purlin Anchors

HPA series – For installation into poured concrete walls,

foundations, or masonry. The HPA is the heavy-duty version

of the PA anchor.

PA series – For installation into poured concrete or concrete

block walls and foundations.

PAI series – For wood I-Joist applications. An expanded 3"

on-center nail spacing reduces splitting along I-Joist ange.

Materials: HPA – 10 gauge; PA / PAI – 12 gauge

Finish: G90 galvanizing

Options: See chart for Corrosion Finish Options

Codes: IBC 1620.2.1

Installation:

• Use all specied fasteners. See Product Notes, page 18.

• Minimum concrete strength is 2,500 psi.

• The allowable loads for bolts are based on parallel to grain

loading with a 3" minimum member thickness, except the

HPA which requires a 3-1⁄2" thick wood member. Reduce

load per code requirements when minimum member

thickness is not achieved.

• Minimum concrete end/edge distance is 4" for PA / PAI series,

and 6" for HPA series.

• Minimum CMU end/edge distance is 20".

• Designer may specify alternate fastening schedules. Refer

to Nail Specication Table on page 23 for nail shear values.

Load values shall not exceed published allowable loads.

• No anchor bolts are needed for achieving efcient stress

transfer from framing to concrete walls or foundations.

Typical PA holdown

installation

Typical PA

purlin installation

Typical PAI

I-Joist purlin face installation

Ledger

#4 rebar

min

PA / HPA

2-1/16"

1-1/2"

4-1/2"

PAI

2-1/16"

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