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  <xs:element id="bxc_ValuationAllowanceOperatingLossCarryforwardsStateAndLocalJurisdiction" abstract="false" name="ValuationAllowanceOperatingLossCarryforwardsStateAndLocalJurisdiction" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_A60SeniorSecuredNotesDue2029Member" abstract="true" name="A60SeniorSecuredNotesDue2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bxc_LondonInterbankOfferedRateLIBOR1Member" abstract="true" name="LondonInterbankOfferedRateLIBOR1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxc_DebtInstrumentPercentageOfPrincipalDiscount" abstract="false" name="DebtInstrumentPercentageOfPrincipalDiscount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="bxc_CentralStatesSoutheastandSouthwestAreasPensionFundMember" abstract="true" name="CentralStatesSoutheastandSouthwestAreasPensionFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bxc_MultiemployerPlansEmployerContributionAmountAsAPercentageOfTotalContributions" abstract="false" name="MultiemployerPlansEmployerContributionAmountAsAPercentageOfTotalContributions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="bxc_MultiemployerPlansEmployerContributionAmountasaPercentageofPlanContributions" abstract="false" name="MultiemployerPlansEmployerContributionAmountasaPercentageofPlanContributions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="bxc_MultiemployerPlansWarrantyLiabilityPaymentPeriod" abstract="false" name="MultiemployerPlansWarrantyLiabilityPaymentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bxc_MultiemployerPlansWithdrawalLiability" abstract="false" name="MultiemployerPlansWithdrawalLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_MultiemployerPlansWithdrawalLiabilityYearlyPayment" abstract="false" name="MultiemployerPlansWithdrawalLiabilityYearlyPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_MultiemployerPlansPartialWithdrawal" abstract="false" name="MultiemployerPlansPartialWithdrawal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_HourlySavingsPlanMember" abstract="true" name="HourlySavingsPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bxc_SalariedSavingsPlanMember" abstract="true" name="SalariedSavingsPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bxc_DefinedContributionPlanNumberofPlans" abstract="false" name="DefinedContributionPlanNumberofPlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxc_DefinedContributionPlanCostPriorYear" abstract="false" name="DefinedContributionPlanCostPriorYear" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_DefinedBenefitPlanVestedBalance" abstract="false" name="DefinedBenefitPlanVestedBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_DefinedBenefitPlanAmortizationOfUnrecognizedGainsLosses" abstract="false" name="DefinedBenefitPlanAmortizationOfUnrecognizedGainsLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_DefinedBenefitPlanNetPeriodicBenefitCostCreditBeforeSettlements" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostCreditBeforeSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_A2021LongTermIncentivePlanMember" abstract="true" name="A2021LongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bxc_StockRepurchasedDuringPeriodAveragePricePerShare" abstract="false" name="StockRepurchasedDuringPeriodAveragePricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="bxc_EarningsPerShareTable" abstract="true" name="EarningsPerShareTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bxc_EarningsPerShareLineItems" abstract="true" name="EarningsPerShareLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_LesseeLeasesNumberOfOptionsToExtend" abstract="false" name="LesseeLeasesNumberOfOptionsToExtend" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxc_SaleLeasebackTransactionUnamortizedDeferredGainGross" abstract="false" name="SaleLeasebackTransactionUnamortizedDeferredGainGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_LesseeRightOfUseAssetAbstract" abstract="true" name="LesseeRightOfUseAssetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_LesseeRightOfUseAsset" abstract="false" name="LesseeRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_LesseeLeaseLiabilitiesCurrentAbstract" abstract="true" name="LesseeLeaseLiabilitiesCurrentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_LesseeLeaseLiabilitiesNoncurrentAbstract" abstract="true" name="LesseeLeaseLiabilitiesNoncurrentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_LesseeLeaseLiabilities" abstract="false" name="LesseeLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_FinanceLeaseCost" abstract="false" name="FinanceLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bxc_WeightedAverageRemainingLeaseTermAbstract" abstract="true" name="WeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_WeightedAverageDiscountRateAbstract" abstract="true" name="WeightedAverageDiscountRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bxc_EquipmentAndVehiclesMember" abstract="true" name="EquipmentAndVehiclesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bxc_UnpaidDutiesMember" abstract="true" name="UnpaidDutiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bxc_PercentageOfEmployeesEmployedOnPartTimeBasis" abstract="false" name="PercentageOfEmployeesEmployedOnPartTimeBasis" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="bxc_PercentageOfEmployeesRepresentedByVariousLaborUnions" abstract="false" name="PercentageOfEmployeesRepresentedByVariousLaborUnions" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="bxc_NumberOfCollectiveBargainingAgreementsRenewalsInNextFiscalYear" abstract="false" name="NumberOfCollectiveBargainingAgreementsRenewalsInNextFiscalYear" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxc_PercentageOfEmployeesRepresentedAreUpForRenewal" abstract="false" name="PercentageOfEmployeesRepresentedAreUpForRenewal" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="bxc_NumberOfCollectiveBargainingAgreementsRenewalsRenegotiated" abstract="false" name="NumberOfCollectiveBargainingAgreementsRenewalsRenegotiated" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bxc_AccumulatedOtherAdjustmentNetOfTaxMember" abstract="true" name="AccumulatedOtherAdjustmentNetOfTaxMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="bxc_OtherComprehensiveIncomeLossDefinedBenefitPlanReclassificationAdjustmentFromAOCIBeforeTaxAndFromSettlement" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanReclassificationAdjustmentFromAOCIBeforeTaxAndFromSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
