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Installation

View step-by-step installation instructions

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

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

Finish: Galvanized.

Installation:

• Use all specified fasteners. See General Notes.
• Install before concrete pour with a StrapMate®, or other holding device.
• Strap may be bent one full cycle. Bending the strap 90° to aid wall placement may cause spalling behind the strap. If the spall is 1" or less, measured from the embedment line to the bottom of the spall, full loads apply. For spalls between 1" and 4" (see illustration), the allowable load is 0.90 of the table loads.
• For two pour installations spalling is measured from the first pour.
• Nail strap from bottom up. Strap may be bent one full cycle.
• Where fewer fasteners are used in the structural wood member, reduce loads according to the code. A wood splitting problem may occur when holdowns are nailed to lumber less than 3 1/2" wide. To lessen splitting of 3x's or double 2x's, either fill every nail hole with 10dx1 1/2" nails or fill every other nail hole with 16d commons. Reduce the allowable load based on the size and quantity of fasteners used.
• Unless otherwise noted, do NOT install where: (a) a horizontal cold joint exists within the embedment depth between the slab and foundation wall or footing beneath, unless provisions are made to transfer the load, or the slab is designed to resist the load imposed by the anchor; or (b) slabs are poured over concrete block foundation walls.
• To get the full table load, the minimum center-to-center spacing is twice the embedment depth when resisting tension loads at the same time.
• To tie multiple 2x members together, the Designer must determine the fasteners required to bind members to act as one unit without splitting the wood.
• Additional studs attached to the shearwall studs or post may be required by the Designer for wall sheathing nailing.

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:

• See also STHD Holdowns, LTT, HTT Tension Ties.