garage-portal

Design and installation information to guide the use of our Steel Strong-Wall® shearwalls in garage portal systems on concrete foundations.

Steel Strong-Wall Garage Portal Systems on Concrete Foundations

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<h1>Garage Portal Systems  on Concrete Foundations</h1>
  <div class="row">
    <div class="col-md-6">
      <p>Simpson Strong-Tie offers a Steel Strong-Wall shearwall option for garage portal systems which combines simplified installation with superior performance.</p>
      <ul>
        <li>Higher allowable loads with reduced concrete anchorage requirements (see Alternate Garage Front Options below for other options)</li>
        <li>Same anchor bolt template </li>
        <li>Complete kit available to simplify the connection to the header or beam </li>
      </ul>
      <p><a href="/products/lateral-systems/strong-wall-shearwalls/technical-notes/steel-installation-standard-application-concrete-foundations">For product data and naming scheme information.</a></p>
      <p><strong>Suggested Example Specification: SSW12x7 with SSWP-KT</strong></p>
      <h2>Garage Header Rough Opening Height</h2>
      <img alt="Table: Garage Header Rough Opening Height" src="https://embed.widencdn.net/img/ssttoolbox/78t22rcvm6/500px@2x/C-L-SW21-47a.png"><br>
      <ol>
        <li>The height of the garage curb above the garage slab is critical for rough header
          opening at garage return walls. </li>
        <li>Shims are not provided with Steel Strong-Wall. </li>
        <li>Furring down garage header may be necessary for correct rough opening height. </li>
        <li><a href="/products/lateral-systems/strong-wall-shearwalls/technical-notes/steel-installation-standard-application-concrete-foundations"> Refer to wall dimensions</a>.</li>
      </ol>
    </div>
    
    <div class="col-md-6">
      <div class="row">
        <div class="col-md-6 img-panel"><img alt="Drawing: Exterior face" src="https://embed.widencdn.net/svg/ssttoolbox/kx3cjrl7va/C-L-SW21-47b.svg"></div>
        <div class="col-md-6 image__caption"><a href="/products/lateral-systems/strong-wall-shearwalls/technical-notes/steel-installation-standard-application-concrete-foundations">For a complete set of wall profile drawings.</a></div>
      </div>
      <h3 class="h4">Installation</h3>
      <ul>
        <li>Portal Frame Connection Kit is required to achieve increased load
          values listed for portal frame system. </li>
        <li>SSWPS straps must be installed on exterior face of the Steel
          Strong-Wall shearwall. Position header flush with exterior face of the
          Steel Strong-Wall shearwall. </li>
        <li>Do not cut the Steel Strong-Wall or enlarge existing holes. Doing so
          will compromise the performance of the wall. </li>
        <li>Do not use an impact wrench to tighten nuts on the
          anchor bolts. </li>
        <li>Maximum shim thickness between the Steel Strong-Wall and
          header is 7/8" using Simpson Strong-Tie&reg;  Strong-Drive&reg; 1/4" x 3 1/2"
          SDS Heavy-Duty Connector screws. </li>
        <li>Walls with 2x4 preattached studs may also be used in 2x6 wall
          framing. Install the wall flush to exterior face of the framing and add
          furring to the opposite side. </li>
        <li>Walls may be installed with solid headers in all cases or multi-ply
          headers in Wind and SDC A-C, <a href="/search?v=%3Arelevance%3AdrawingFileType%3APDF%3AdrawingDimension%3ADetail+Sheets&tab=drawing&keywordFilter=ssw2">see detail 11/SSW2.</a></li>
      </ul>
      <h2>Portal Frame Connection Kit</h2>
      <img alt="Table: Portal Frame Connection Kit" src="https://embed.widencdn.net/img/ssttoolbox/fh2pll6pyc/500px@z/C-L-SW21-47c.png"> </div>
     
    
  </div>
  
  
  <div class="row">
    <div class="col-md-12">
      <div class="img-panel"> 
        <img alt="Drawing: Installation reflecting lateral load requirements of a single-wall portal system" src="https://ssttoolbox.widen.net/content/6xpr0rb6wo/png/
        SW_SSW_InstIll_Ill_Instld_SteelStrongWall-GarageFrontPortal-OnConcrete-WithDetail_CY.png?crop=false&position=c&color=ffffffff&w=2048&h=1316">

        <img alt="SW_Saw_InstDtl_Ill_Other_ReciprocatingSaw-Sawzall-DoNotCut_CY.ai" src="https://ssttoolbox.widen.net/content/8dkagbrdw9/png/
        SW_Saw_InstDtl_Ill_Other_ReciprocatingSaw-Sawzall-DoNotCut_CY.png?crop=false&position=c&color=ffffffff&w=120">

        <div class="image__caption">
          <p>US Patent</p>
          <p>8,281,551</p>
          <p>* This installation reflects lateral load requirements of a single-wall portal system. It is the designer’s responsibility to provide a complete load path for all loads in accordance with the governing codes. Refer to footnotes 2, 4 and 9.</p>
        </div>
      </div>
    </div>
    
    
    <div class="col-md-12"><img alt="Table: Single-Wall Garage Portal System" src="https://embed.widencdn.net/img/ssttoolbox/d7wfewwct9/500px@2x/C-L-SW21-48a.png"></div>
    <div class="col-md-12">
      <ol>
        <li>Allowable shear loads and anchor tension forces are applicable to Single-Wall Garage Portal System installation on concrete with minimum f'<sub>c</sub> = 2,500 psi using the ASD basic (Section 1605.3.1) or the alternative basic (Section 1605.3.2) load combinations. Load values include evaluation of bearing stresses. </li>
        <li>A Double-Wall Garage Portal System consists of two walls with a header continuous across both panels.
          The allowable load is twice the Single-Wall Portal value. </li>
        <li>For seismic designs based on the 2021 IBC using R=6.5. For other codes, use the seismic coefficients corresponding to light-frame bearing walls with wood structural panels or sheet steel panels. </li>
        <li>The minimum header size shown in the details is the minimum required for lateral rigidity of the portal system. Larger headers may be required due to
          vertical loading. Support post uplift connectors may be reduced where justified by calculations. </li>
        <li>Recommended header moisture content is 19% or less at time of installation. </li>
        <li>Allowable shear, drift and anchor tension values may be interpolated for intermediate height or axial loads. </li>
        <li>High-strength anchor bolts are required for anchor tension forces exceeding the <a href="/products/lateral-systems/strong-wall-shearwalls/steel-strong-wall/shearwalls/anchorage-solutions">allowable load for  standard-strength bolts</a>. High-strength anchor bolts are required for SSW12 when the seismic overturning moment (seismic shear x shearwall height) exceeds 61,600 in.-lb. See <a href="/products/lateral-systems/strong-wall-shearwalls/steel-strong-wall/shearwalls/anchor-reinforcement-solutions-grade-beams">SSWAB anchor bolt information</a> and <a href="/products/lateral-systems/strong-wall-shearwalls/steel-strong-wall/shearwalls/anchorage-solutions">anchorage solutions</a>.</li>
        <li>Tabulated anchor tension loads assume no resisting axial load. For anchor tension loads at design shear values and including the effect of axial load, refer to the <a href="https://www2.strongtie.com/webapps/strongwallshearwallselector/?_ga=2.188557931.2106467000.1614011909-1533774003.1497308962">Strong-Wall Selector</a> (include K factor in uplift calculations). Drifts at lower design shear may be linearly reduced.</li>
        <li> Longer header spans can be accommodated if larger headers are used such that equivalent stiffness is equal to or greater than that provided by the minimum header size and maximum length indicated.</li>
      </ol>
    </div>
  </div>
  
  
  <div class="row">
    <h2>Alternate Garage Front Options</h2>
    <div class="col-md-4">
      <p>These alternate garage front options may be used for applications when the Steel Strong-Wall shearwall is installed at the full height (option 1) or without the additional Portal Frame Kit (option 2), when higher capacity or reduced concrete anchorage are not needed. <a href="/products/lateral-systems/strong-wall-shearwalls/technical-notes/steel-installation-standard-application-concrete-foundations">Refer to the Standard Application on Concrete Foundations  for product data and allowable load values.</a></p>
      <p><strong>For Garage Wall Option 2, the designer shall design for: </strong></p>
      <ol>
        <li>Shear transfer </li>
        <li>Out-of-plane loading effect </li>
        <li>Increased overturning and drift
          due to additional height</li>
      </ol>
    </div>
    <div class="col-md-8"><img alt="Drawing: Alternate Garage Front Options" src="https://ssttoolbox.widen.net/content/jznuxcdphf/png/
    SW_SSW_InstIll_Ill_Instld_SteelStrongWall-AltGarageFrontOptions-WithDetail_CY.png?crop=false&position=c&color=ffffffff&w=2048&h=1728"></div>
  </div>

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