Page 43 of Wood Construction Connectors 2006 Catalog by Simpson Strong-Tie

44 Anchors PA/PAHD/HPAHD Strap Tie Holdowns Wood-to-concrete connectors that satisfy engineering and code requirements. MATERIAL: HPA 10 ga; all others 12 ga FINISH: Galvanized, some models available in ZMAX or HDG. INSTALLATION: Use all specified fasteners. See General Notes. Install before concrete pour with a StrapMate, or other holding device. 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 on page 45), 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 wide. To lessen splitting of 3xs or double 2xs, either fill every nail hole with 10dx1 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 double 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 table 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, page 45). 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, MTT, HTT Tension Ties. CODES: See page 12 for Code Listing Key Chart. Model No. Min Stem Wall Embed. Depth le Nails Code Ref. PAHD42 6 6 " 12-16d 8 16-16d HPAHD22 6 10" 16-16d 8 23-16d PAHD42 6 6 " 12-16d 8 12-16d HPAHD22 6 10" 16-16d 8 19-16d HPAHD22-2P 6 14 " 16-16d 20, 124 20, 124 8 23-16d 8, 20, 28, 121, 124 Allowable Tension Loads (133 160) DF/SP 2000 psi Concrete 2500 psi Concrete " 8" " 8" 133 160 133 160 133 160 133 160 SINGLE POUR 920 920 2030 2030 1225 1225 2205 2205 1050 1050 2715 2715 1400 1400 2945 2945 1315 1315 3335 3335 1750 1750 3335 3335 2030 2030 4745 4745 2210 2210 4875 5160 TWO POUR 920 920 2030 2030 1225 1225 2205 2205 1050 1050 2305 2715 1400 1400 2305 2765 1315 1315 3335 3335 1750 1750 3335 3335 2030 2030 4030 4745 2210 2210 4030 4835 2455 2455 3335 3335 2455 2455 3335 3335 2455 2455 4745 4745 2455 2455 4875 5160 End Distance Model No. L Min. Embed. Depth Nails Allowable Uplift Loads (133) (160) PA51 51 4 9-16d 1690 2030 8, 36, 121 PA68 70 4 9-16d 1690 2030 Code Ref. 1.Loads have been increased 33% and 60% for earthquake or wind loading with no further increase allowed; reduce where other loads govern. 2.16d sinkers (9 ga x 3 or 10d commons may be substituted for the specified 16d commons at 0.84 of the table loads. 3.Optional fastener holes provided. Calculate loads according to the code to a maximum of 3685 lbs. Minimum embedment is 4"; 5" to the nearest edge. 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 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 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 for 16d nails. 5. Calculate loads using straight line interpolation for corner distances between 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 shown apply to post-tension slabs when one #4 rebar (minimum) is installed as shown on page 43. 10. Post design shall be by Designer. 11. NAILS: 16d 0.162" dia. x 3 long. See page 16-17 for other nail sizes and information. HPAHD22-2P HPAHD22 PA51 (PA68 similar) Embedment Line (Top of Concrete) Available with additional corrosion protection. Check with factory. Typical PA connecting Stud to Foundation (use PAHD42 or HPAHD22 for edge applications)

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