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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Double-deck elevator</span></span>
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<p>A <b>double-deck elevator</b> or <b>double-deck lift</b> is an <a href="Elevator" title="Elevator">elevator</a> where one cab is stacked on top of another. This allows passengers on two consecutive floors to be able to use the elevator simultaneously, significantly increasing the passenger capacity of an elevator shaft. Such a scheme can improve efficiency in buildings where the volume of traffic would normally have a single-deck elevator stopping at every floor. For example, a passenger may board the lower deck (which serves only odd-numbered floors) at <a href="Basement" title="Basement">basement</a> level while another passenger may board the upper deck (which serves even-numbered floors) on the ground floor—the cab serving even floors is on top of the cab serving odd floors.
</p><p>Double-deck elevators occupy less building core space than traditional single-deck elevators do for the same level of traffic. In skyscrapers, this allows for much more efficient use of space as the floor area required by elevators is significant.
</p><p>The other main technique for reducing the floor area occupied by elevators is shared-shaft elevators where multiple elevators use different sections of the same shaft to serve different floors with <a href="Skylobbies" class="mw-redirect" title="Skylobbies">skylobbies</a> separating the sections. The <a href="ThyssenKrupp" title="ThyssenKrupp">ThyssenKrupp</a> TWIN elevator places two independent elevator cabs in one shaft and the <a href="TK_Elevator_MULTI" title="TK Elevator MULTI">ThyssenKrupp MULTI</a> system places several elevator cabs in one shaft—each cab is equipped with its own, independent linear motor and can move vertically but also horizontally from one shaft to another.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Double-deck_goods/passenger_elevators">Double-deck goods/passenger elevators</h2></div>
<p>Not all double-deck elevators are used to transport passengers simultaneously in both decks. The second deck in a double-deck car may be used for the transportation of goods, typically outside of peak traffic periods. This technique has the advantages of preventing damage to interior fixtures due to impact from trolleys and not requiring a shaft dedicated to a goods-only elevator car. During peak periods, the elevator is used in passenger-only mode.
</p><p>As of 2011, no triple-deck elevators have been built, although such a design had been considered for the 163-floor <a href="Burj_Khalifa" title="Burj Khalifa">Burj Khalifa</a> before the final design was scaled back to double-deck.<sup id="cite_ref-Emporis_3-0" class="reference"><a href="#cite_note-Emporis-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.cnbc.com/amp/2017/12/13/thyssenkrupp-multi-elevator-goes-up-down-sideways.html">"ThyssenKrupp MULTI elevator goes up, down, sideways"</a>. <i><a href="CNBC" title="CNBC">CNBC</a></i>. 13 December 2017.</cite></span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://www.wired.co.uk/article/thyssenkrupp-multi-maglev-elevator">"The Wonkavator is real! Behold the maglev Multi lift that goes up, down and left to right"</a>. <i>Wired UK</i>.</cite></span>
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<li id="cite_note-Emporis-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-Emporis_3-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1 cs1-prop-unfit"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070120063252/http://www.emporis.com/en/wm/bu/?id=burjdubai-dubai-unitedarabemirates">"Burj Dubai, Dubai, at Emporis.com"</a>. <a href="Emporis" title="Emporis">Emporis</a>. Archived from the original on 20 January 2007<span class="reference-accessdate">. Retrieved <span class="nowrap">1 March</span> 2007</span>.</cite></span>
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<ul><li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=pWyo-vEPRNE">How do they work?</a></li>
<li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=tv-jASm3Uzg">Skytrak</a></li></ul></div><!--htdig_noindex--><div><div class="zim-footer">
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