HPA Heavy Purlin Anchor
On This Page
Purlin Anchors
This product's information may differ depending on the category of use. You are currently viewing details related to Purlin Anchors. You can also view product information related to the category: Holdowns and Tension Ties for Cold-Formed Steel Construction
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.
| 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
| 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 | |||
|---|---|---|---|---|---|---|---|
