<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a0fd3c-5363-79a0-9694-a227c237f585,g:f2c26574-3c38-4962-a8ce-14c813c53cbf-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.cmc.com/role/Cover" xlink:type="simple" xlink:href="cmc-20261015.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.cmc.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a0fd3c-5364-7574-a2be-2b3304c0ea7e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_DocumentType_01a0fd3c-5364-7574-a2be-2b3304c0ea7e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a0fd3c-5364-767b-87a4-cf31b272c3f6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_DocumentPeriodEndDate_01a0fd3c-5364-767b-87a4-cf31b272c3f6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a0fd3c-5364-7c46-93a5-f4c7278866f3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityRegistrantName_01a0fd3c-5364-7c46-93a5-f4c7278866f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a0fd3c-5364-7d45-9409-770568a6e4f1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a0fd3c-5364-7d45-9409-770568a6e4f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a0fd3c-5364-76cc-8ce8-7375c4e6a5ec" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityFileNumber_01a0fd3c-5364-76cc-8ce8-7375c4e6a5ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a0fd3c-5364-7d18-8ea1-f4b773339c69" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a0fd3c-5364-7d18-8ea1-f4b773339c69" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a0fd3c-5364-76f5-9da8-d0a3535dc3fc" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityAddressAddressLine1_01a0fd3c-5364-76f5-9da8-d0a3535dc3fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a0fd3c-5364-7617-a331-0c82b252dd0f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityAddressCityOrTown_01a0fd3c-5364-7617-a331-0c82b252dd0f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a0fd3c-5364-78a9-9cc4-507279bcd02d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityAddressStateOrProvince_01a0fd3c-5364-78a9-9cc4-507279bcd02d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a0fd3c-5364-741e-9f58-40ab7032431d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityAddressPostalZipCode_01a0fd3c-5364-741e-9f58-40ab7032431d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a0fd3c-5364-798a-b4aa-7c2ea1c942f4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_CityAreaCode_01a0fd3c-5364-798a-b4aa-7c2ea1c942f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a0fd3c-5364-7604-bab6-b5486cf4139d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_LocalPhoneNumber_01a0fd3c-5364-7604-bab6-b5486cf4139d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_01a0fd3c-5364-7658-bff6-53936b4d4a92" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_WrittenCommunications_01a0fd3c-5364-7658-bff6-53936b4d4a92" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_01a0fd3c-5364-7f16-a468-5a07f8724f09" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_SolicitingMaterial_01a0fd3c-5364-7f16-a468-5a07f8724f09" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_01a0fd3c-5364-745f-a94a-10ad591bc944" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_PreCommencementTenderOffer_01a0fd3c-5364-745f-a94a-10ad591bc944" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_01a0fd3c-5364-7e1e-97af-3e47c143be65" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_01a0fd3c-5364-7e1e-97af-3e47c143be65" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a0fd3c-5364-79b6-a09f-c4f4e1e8b71c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_Security12bTitle_01a0fd3c-5364-79b6-a09f-c4f4e1e8b71c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a0fd3c-5364-72e3-8ec9-c14cbcd0633b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_TradingSymbol_01a0fd3c-5364-72e3-8ec9-c14cbcd0633b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a0fd3c-5364-7634-a263-865759e85429" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_SecurityExchangeName_01a0fd3c-5364-7634-a263-865759e85429" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a0fd3c-5364-71db-ae8c-f50186f798b2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a0fd3c-5364-71db-ae8c-f50186f798b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a0fd3c-5364-748f-b117-cf79b749d3b3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_EntityCentralIndexKey_01a0fd3c-5364-748f-b117-cf79b749d3b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a0fd3c-5364-7b2a-8623-dfc7e43d5252" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0fd3c-5364-7aed-bd55-de0f6ee3dbde" xlink:to="loc_dei_AmendmentFlag_01a0fd3c-5364-7b2a-8623-dfc7e43d5252" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
