HPA Heavy Purlin Anchor
Purlin Anchors
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Product Details
The HPA is a solution for wood-to-concrete connections which satisfies code requirements. This heavy purlin anchor is designed to connect roof purlins to a concrete wall. The HPA offers the highest capacity in concrete.
Key Features
- Embedment line stamped on strap to aid installation
- Nailing pattern optimized for narrow face of nominal 3x or double 2x wood member
- Low design profile minimizes visibility
Material
- 10 gauge
Finish
- Galvanized. HPA28 also available in HDG; see Corrosion Information.
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".
Related Literature
Product Information Table
| Model No. | Ga. | W (in.) | L (in.) | Coating/Material | Packaging Qty. |
|---|---|---|---|---|---|
| HPA28 | 10 | 2 1/16 | 32 1/2 | Zinc Galvanized, G90 | 1 |
| HPA35 | 10 | 2 1/16 | 38 1/2 | Zinc Galvanized, G90 | 1 |
Load Tables
These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.
Wind and SDC A&B — Allowable Tension Loads (160)
| Max. Ledger Size | Model No. | Strap Length, L (in.) | Embed Length, le (in.) | Uncracked Concrete | Cracked Concrete | GFCMU Wall | Max. Allowable Strap Tension | Deflection at Allowable Load (in.) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concrete | GFCMU | Required Nails (in.) | Tension | Required Nails (in.) | Tension | Required Nails (in.) | Tension | |||||
| 4x Ledger | HPA28 | 32 1/2 | 6 | 6 | (22) 0.148 x 3 | 5,145 | (20) 0.148 x 3 | 4,675 | — | — | NA | 0.133 |
| HPA35 | 38 1/2 | 8 1/4 | 8 1/4 | (22) 0.148 x 3 | 5,145 | (22) 0.148 x 3 | 5,145 | — | — | NA | 0.132 | |
See Footnotes1 below
SDC C-F — Allowable Tension Loads (160)
| Max. Ledger Size | Model No. | Strap Length, L (in.) | Embed Length, le (in.) | Uncracked Concrete | Cracked Concrete | GFCMU Wall | Max. Allowable Strap Tension | Deflection at Allowable Load (in.) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Concrete | GFCMU | Required Nails (in.) | Tension | Required Nails (in.) | Tension | Required Nails (in.) | Tension | |||||
| 4x Ledger | HPA28 | 32 1/2 | 6 | 6 | (22) 0.148 x 3 | 5,145 | (20) 0.148 x 3 | 4,090 | — | — | 5,145 | 0.133 |
| HPA35 | 38 1/2 | 8 1/4 | 8 1/4 | (22) 0.148 x 3 | 5,145 | (22) 0.148 x 3 | 5,145 | — | — | 5,145 | 0.132 | |
Footnotes1
- Allowable loads have been increased for wind or earthquake loading with no further increase allowed. Reduce where other loads govern.
- Deflection listed is at the highest allowable load.
- Multiply seismic and wind ASD load values by 1.43 or 1.67, respectively, to obtain LRFD capacities.
- Nail quantities are based on Douglas fir (DF) or equivalent specific gravity of 0.50 or better. For use in spruce-pine-fir (SPF) or hem fir (HF), nails quantities shall be increased by 1.15 to achieve loads listed.
- For wall anchorage systems in SDC C-F, the maximum strap allowable load shall not be less than 1.4 times the ASD anchor design load.
- Minimum center-to-center spacing is 3x the required embedment — i.e., standard installation is based on a minimum 5" end distance.
- Structural composite lumber beams have sides that show either the wide face or the lumber strands/veneers. Values in the tables reflect installation into the wide face.
- Concrete shall have a minimum compressive strength of f'c = 3,000 psi.
- Grout-filled CMU (GFCMU) shall have a minimum compressive strength of f'm = 1,500 psi.
- For HPA models, 0.148" x 1 1/2" nails may be substituted for 0.148" x 3" nails at 100% of listed load and with a 15% increase in deflection. For installation over sheathing, use 3"-long nails minimum.
- Fasteners: Nail dimensions in the table are listed diameter by length. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.
Code Reports & Compliance
Drawings
| DWG | DXF | RFA | IFC | SAT | |||
|---|---|---|---|---|---|---|---|
