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PAHD/HPAHD Strap Tie Holdowns

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Wood-to-concrete connectors that satisfy engineering and code requirements.

Material: HPA - 10 gauge; all others - 12 gauge

Finish: Galvanized.

Installation:

Foundation Corners: Nail and bolt quantities have been reduced when the load is limited by tested concrete pullout strength (fill holes from bottom up); additional nail holes need not be filled. Nail and bolt quantities may be reduced further for less than 8" corner distance design loads - use code allowable loads for fasteners used in shear.

Two-Pour Systems: When a cold joint exists between slab and foundation, the holdown will be lower on the stud wall since the embedded portion of the holdown must be in the foundation (see footnote 1 for exception). Fewer fasteners are used, reducing allowable loads. Loads are calculated using a 4" slab over 6" and 8" foundation walls.

PAHD42, HPAHD22, HPAHD22-2P Holdowns: Designed to be installed at the edge of concrete. Tests determined the pullout strength with one horizontal #4 rebar in the shear cone. Rebar should be a minimum length of 2x embedment depth + 12" (except corner installations, see illustration). Install before pouring concrete by nailing to form. Installation holes allow nailing to the form, resulting in 1" deeper embedment; see illustration.

Options:


top Gallery:
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HPAHD22 HPAHD22-2P    
         
     

top Single Pour Installations:
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Installation 1
Typical HPAHD Single Pour Edge Installation
Installation 2
Typical HPAHD Single Pour Corner and Endwall Installation
Installation 3
Typical HPAHD Single Pour Rim Joist Installation
(Reduce allowable load based on quantity of effective nails used.)
Single Pour Rebar Installation
*Maintain minimum rebar cover, per ACI-318 concrete code requirements.

top Two Pour Installations:
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Installation 4
Typical HPAHD22-2P Two Pour Edge Installation. Unless noted, install other models with bend embedment line at cold joint between slab and foundation.
Installation 5
Typical HPAHD Two Pour Corner Installation
 
Two Pour Rebar Installation
*Maintain minimum rebar cover, per ACI-318 concrete code requirements.
  Typical PAHD42 before the Concrete Pour

top Spalling Reduction System for PAHD and HPAHD:
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Spalling
Spalling may occur if the anchor is bent horizontally 90° before installation, and then bent up vertically to attach to the stud.
Load reduction may apply.
Spall Reduction System for PAHD and HPAHD

Features
  • Secures holdown to wood form-board.
  • Allows for properside-cover.
  • Keeps strap vertical.
  • Prevents tilting or twisting of strap during the concrete pour.
  • Uses one 16d duplex nail.

Benefits
  • Greatly reduces spalling and costly retrofits.
  • Helps prevent strap movement parallel and perpendicular to plate.
  • Decreases possibility of misinstallation of strap to wood member.
  • Simple to use:
    • Common jobsite nail.
    • No additional expense.
When using keyhole feature, care should be taken when removing form boards. If concrete is not set, the duplex nail will move the strap placement.
top Load Tables:See code repot listings below

Table
  1. HPAHD22 may be embedded 4" into the slab and 6" into the 8" stemwall beneath for a maximum load of 2810 lbs. at 8" minimum
    from the closest corner, and 1200 lbs. at 1/2" from the closest corner (like installation 4).
  2. Allowable loads have been increased for earthquake or wind load durations with no further increase allowed; reduce where
    other load durations govern.
  3. 16d sinkers (0.148" dia. x 3 1/4" long) or 10d commons may be substituted for specified 16d commons at 0.85 of table loads.
  4. Minimum nail end distance to prevent splitting is 10x the nail diameter, or 1 5/8" for 16d nails.
  5. Calculate loads using straight line interpolation for corner distances between 1/2" and 8".
  6. Optional fastener holes are provided on selected products. Because the product is limited by the concrete foundation, you may
    not need to install optional fasteners.
  7. Strap may be bent one full cycle. (Bent horizontal 90° then bent vertical.)
  8. Rim Joist application: see Installation 3 for corner condition.
  9. Loads show apply to post-tension slabs when one #4 rebar (minimum) is installed as shown above.
  10. Post design shall be by designer.
  11. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. Values in the tables reflect installation into the wide face.
  12. NAILS: 16d = 0.162" dia. x 3 1/2" long. See other nail sizes and information.
top Code Reports (PDFs):
Legacy Reports
  IAPMO ES ER ICC-ES ESR CITY OF LOS ANGELES STATE OF FLORIDA ICC-ES NER ICC-ES ER ICC-ES ES
HPAHDSee specific model numbers for code listings.
HPAHD22      FL5805   ER-1211  
HPAHD22-2P      FL5805 / FL9601 NER-469 ER-1211 / ER-5275  
PA18Z No code listing. Please contact us for test data.
PA23Z No code listing. Please contact us for test data.
PA28Z No code listing. Please contact us for test data.
PA35Z No code listing. Please contact us for test data.
PAHDSee specific model numbers for code listings.
PAHD42      FL5805   ER-1211  

   
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