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PA/HPA Purlin Anchors

PA/HPA

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

PA/HPA purlin anchors offer solutions for wood-to-concrete and concrete-block connections which satisfy code requirements. The PA's dual embedment line allows installation in concrete or concrete block.

Material

  • PA — 12 gauge; HPA — 10 gauge

Finish

  • Galvanized; PAs available in HDG or ZMAX® coating

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).
  • PA51/PA68For additional length, an MST strap can be attached using 1/2" bolts through existing holes.
  • Refer to technical bulletin PA Foundation Straps for Uplift Resistance (T-PAUPLIFT) for additional information.

Edge DistanceMinimum concrete edge distance is 5". Minimum concrete block left-to-right edge distance is 20".

Concrete Block Wall The minimum wall specifications are:

AOne # 4 vertical rebar, 32" long, 16" each side of anchor.
BTwo courses of grout-filled block above and below the anchor (no cold joints allowed).
CA horizontal bond beam with two #4 rebars, 40" long, a maximum of two courses above or below the anchor.
DMinimum masonry compressive strength, f'm = 1,500 psi.

Options

  • See LTT, HTT and S/LTT, S/DTT tension ties for alternate retrofit solutions

Codes

ASCE 7-10 12.11.2.2.5 states:
... Diaphragm to structural wall anchorage using embedded straps shall be attached to, or hooked around the reinforcing steel or otherwise terminated so as to effectively transfer forces to the reinforcing steel.

Related Links

Wood Construction

Cold-Formed Steel Construction

Corrosion Information

Catalog Pages

Related Literature

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.) Non-Cracked Concrete Cracked Concrete GFCMU Wall Max. Allowable Strap Tensile Capacity Deflection at Allowable Load (in.)
Concrete GFCMU Required Nails Tension Required Nails Tension Required Nails Tension
4x Ledger PA18 18 1/2 4 6 (12) 10d 2,430 (12) 10d 2,360 (12) 10d 1,890 NA 0.087
PA23 23 3/4 4 6 (16) 10d 3,220 (12) 10d 2,360 (16) 10d 2,815 NA 0.118
PA28 29 4 6 (16) 10d 3,370 (12) 10d 2,360 (16) 10d 2,815 NA 0.085
PA35 35 4 6 (16) 10d 3,370 (12) 10d 2,360 (16) 10d 2,815 NA 0.085
HPA28 32 1/2 6 6 (22) 10d 5,145 (20) 10d 4,675 (22) 10d NA 0.133
HPA35 38 1/2 8 1/4 8 1/4 (22) 10d 5,145 (22) 10d 5,145 (22) 10d 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.) Non-Cracked Concrete Cracked Concrete GFCMU Wall Max. Allowable Strap Tensile Capacity Deflection at Allowable Load (in.)
Concrete GFCMU Required Nails Tension Required Nails Tension Required Nails Tension
4x Ledger PA18 18 1/2 4 6 (12) 10d 2,430 (12) 10d 1,980 (12) 10d 1,890 3,220 0.087
PA23 23 3/4 4 6 (14) 10d 2,830 (12) 10d 1,980 (16) 10d 2,815 3,220 0.118
PA28 29 4 6 (14) 10d 2,830 (12) 10d 1,980 (16) 10d 2,815 3,935 0.085
PA35 35 4 6 (14) 10d 2,830 (12) 10d 1,980 (16) 10d 2,815 3,935 0.085
HPA28 32 1/2 6 6 (22) 10d 5,145 (20) 10d 4,090 (22) 10d 5,145 0.133
HPA35 38 1/2 8 1/4 8 1/4 (22) 10d 5,145 (22) 10d 5,145 (22) 10d 5,145 0.132

Footnotes1

  1. Allowable loads have been increased for earthquake or wind load durations with no further increase allowed.
  2. Deflection listed is at highest allowable load.
  3. To obtain LRFD values for purlin anchors, multiply ASD seismic load values by 1.4 and wind load values by 1.6 (1.67 for 2015 IBC).
  4. Minimum center-to-center spacing is 3x the required embedment. Standard installation is based on a minimum 5" end distance.
  5. For wall anchorage systems in SDC C-F, the maximum allowable strap tensile capacity shall not be less than 1.4 times the ASD anchor design load.
  6. 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.
  7. 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.
  8. Concrete shall have a minimum concrete strength, f'c of 3,000 psi. Minimum f'm = 1,500 psi for masonry.
  9. PA models installed vertically in top of grouted masonry wall with 6" embedment and (12) 10d nails achieve an allowable uplift load of 1,890 lb.
  10. For PA models, 10d x 1 1/2" nails may be substituted for 10d nails at 100% of listed load and with a 15% increase in deflection. For installation over sheathing, use 3" long nails minimum.
  11. Nails: 10d = 0.148" dia. x 3" long, 10d x 1 1/2" = 0.148" dia. x 1 1/2" long.
    See other nail sizes and information.

 

    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.

   These models are approved for installation with the Strong-Drive® SD Connector screw. See the load values below.

  1. Allowable loads have been increased for earthquake or wind load durations with no further increases allowed.
  2. Concrete shall have a minimum concrete strength, f'c of 2500 psi.
  3. Masonry applications require grout-filled CMU with minimum compressive strength f'm = 1,500 psi.
  4. Deflection at highest allowable load is as follows: PA51 and PA68 = 0.10".
  5. PA allowable lateral loads are F1 = 795 lb. and F2 = 280 lb.
  6. Strong-Drive® SD9 x 1 1/2" (0.131" x 1 1/2") Connector screws may be substituted for nails with no reduction
  7. Nails: 10d = 0.148" dia. x 3 " long.
    See other nail sizes and information.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
HPASee specific model numbers for code listings.
HPA28 ESR-2920 ESR-2523 FL13326
HPA35 ESR-2920 ESR-2523 FL13326
PASee specific model numbers for code listings.
PA18 ESR-2920 ESR-2523 FL13326 FL13904
PA23 ESR-2920 ESR-2523 FL13326 FL13904
PA28 ESR-2920 ESR-2523 FL13326 FL13904
PA35 ESR-2920 ESR-2523 FL13326 FL13904
PA51 ESR-2920 ESR-2523 FL13326 FL13904
PA68 ESR-2920 ESR-2523 FL13326 FL13904

ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction

Drawings

Part Orthographic Perspective
HPANone
PA & HPA
DWG DXF
HPA28
HPA28
DWGDXF
HPA28 front view
DWG DXF
HPA28 left view
DWG DXF
HPA28 right view
DWG DXF
None
HPA35
HPA35
DWGDXF
HPA35 front view
DWG DXF
HPA35 left view
DWG DXF
HPA35 right view
DWG DXF
Girder/Truss to Concrete Connections 1
DWG DXF
PANone
PA & HPA
DWG DXF
PA Stud to Foundation Connection
DWG DXF
PA18
PA18
DWGDXF
PA18 front view
DWG DXF
PA18 left view
DWG DXF
PA18 right view
DWG DXF
None
PA23
PA23
DWGDXF
PA23 front view
DWG DXF
PA23 left view
DWG DXF
PA23 right view
DWG DXF
None
PA28
PA28
DWGDXF
PA28 front view
DWG DXF
PA28 left view
DWG DXF
PA28 right view
DWG DXF
High Wind-Resistant Construction D22: Girder/Truss to Masonry/Concrete
DWG DXF
High Wind-Resistant Construction D23: Girder/Truss to Masonry/Concrete
DWG DXF
Girder/Truss to Concrete Connections 1
DWG DXF
PA35
PA35
DWGDXF
PA35 front view
DWG DXF
PA35 left view
DWG DXF
PA35 right view
DWG DXF
None
PA51
PA51
DWGDXF
PA51 front view
DWG DXF
PA51 left view
DWG DXF
PA51 right view
DWG DXF
High Wind-Resistant Construction D60: Stemwall/Crawlspace
DWG DXF
High Wind-Resistant Construction D61: Stemwall/Crawlspace
DWG DXF
Girder/Truss to Concrete Connections 1
DWG DXF
Lateral Load Connectors
DWG DXF
PA51
DWG DXF
PA68
PA68
DWGDXF
PA68 front view
DWG DXF
PA68 left view
DWG DXF
PA68 right view
DWG DXF
Girder/Truss to Concrete Connections 1
DWG DXF