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  <xs:element id="wms_FinanceLeaseCost" abstract="false" name="FinanceLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" abstract="true" name="CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wms_RightOfUseAssetsObtainedInExchangeForLeaseObligationsAbstract" abstract="true" name="RightOfUseAssetsObtainedInExchangeForLeaseObligationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wms_PipeSegmentMember" abstract="true" name="PipeSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_AlliedProductsAndOtherBusinessSegmentsMember" abstract="true" name="AlliedProductsAndOtherBusinessSegmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_ReallocationDueToChangeInSegments" abstract="false" name="ReallocationDueToChangeInSegments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_FiniteAndIndefiniteLivedIntangibleAssetsTable" abstract="true" name="FiniteAndIndefiniteLivedIntangibleAssetsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="wms_PatentsAndNonCompeteAgreementsMember" abstract="true" name="PatentsAndNonCompeteAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_FiniteAndIndefiniteLivedIntangibleAssetsLineItems" abstract="true" name="FiniteAndIndefiniteLivedIntangibleAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wms_ReceivablesMember" abstract="true" name="ReceivablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_OtherAccruedLiabilitiesMember" abstract="true" name="OtherAccruedLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_DieselFuelOptionCollarsAndSwapsMember" abstract="true" name="DieselFuelOptionCollarsAndSwapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_EquipmentFinancingMember" abstract="true" name="EquipmentFinancingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_A5SeniorNotesDue2027Member" abstract="true" name="A5SeniorNotesDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_A6375SeniorNotesDue2030Member" abstract="true" name="A6375SeniorNotesDue2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_A5.375SeniorNotesDue2034" abstract="false" name="A5.375SeniorNotesDue2034" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_ADSMexicanaMember" abstract="true" name="ADSMexicanaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_SouthAmericanJointVentureMember" abstract="true" name="SouthAmericanJointVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_NumberOfConsolidatedJointVentures" abstract="false" name="NumberOfConsolidatedJointVentures" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="wms_EQTruePointeOneMember" abstract="true" name="EQTruePointeOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_UsDollarDenominatedLoansMember" abstract="true" name="UsDollarDenominatedLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_PercentageOfDebtSecuredGuaranteed" abstract="false" name="PercentageOfDebtSecuredGuaranteed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wms_CommercialLoanAgreementMember" abstract="true" name="CommercialLoanAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_SublimitOfRevolvingCreditFacilityMember" abstract="true" name="SublimitOfRevolvingCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_TermBenchmarkBasedLoansRateMember" abstract="true" name="TermBenchmarkBasedLoansRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_DebtInstrumentCovenantLeverageRatioMinimumForVariableRateStepDown" abstract="false" name="DebtInstrumentCovenantLeverageRatioMinimumForVariableRateStepDown" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="wms_DebtInstrumentCovenantLeverageRatioMaximumForVariableRateStepDown" abstract="false" name="DebtInstrumentCovenantLeverageRatioMaximumForVariableRateStepDown" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="wms_DebtInstrumentCovenantMaximumAmount" abstract="false" name="DebtInstrumentCovenantMaximumAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_DebtInstrumentCovenantRatioOfConsolidatedEBITDA" abstract="false" name="DebtInstrumentCovenantRatioOfConsolidatedEBITDA" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wms_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemedExcludingMakeWholePremium" abstract="false" name="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemedExcludingMakeWholePremium" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wms_LongTermDebtMaturityYearFiveExcludingInterestAndDeferredFinancingCosts" abstract="false" name="LongTermDebtMaturityYearFiveExcludingInterestAndDeferredFinancingCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_EquityClassifiedStockOptionsMember" abstract="true" name="EquityClassifiedStockOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_NonEmployeeDirectorCompensationPlanMember" abstract="true" name="NonEmployeeDirectorCompensationPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_TwoThousandSeventeenOmnibusPlanMember" abstract="true" name="TwoThousandSeventeenOmnibusPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_PerformanceSharesBasedOnReturnOnInvestedCapitalMember" abstract="true" name="PerformanceSharesBasedOnReturnOnInvestedCapitalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_PerformanceSharesBasedOnFreeCashFlowOrCashFlowFromOperationsMember" abstract="true" name="PerformanceSharesBasedOnFreeCashFlowOrCashFlowFromOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_ShareBasedCompensationArrangementByShareBasedPaymentAwardsEquityInstrumentsOtherThanOptionsGrantsInPeriodPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardsEquityInstrumentsOtherThanOptionsGrantsInPeriodPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wms_PerformanceAwardsPerformancePeriod" abstract="false" name="PerformanceAwardsPerformancePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="wms_TwoThousandThirteenStockOptionPlanMember" abstract="true" name="TwoThousandThirteenStockOptionPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAndVestedWeightedAverageExercisePrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAndVestedWeightedAverageExercisePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="wms_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedSharesWeightedAverageExercisePrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedSharesWeightedAverageExercisePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="wms_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageRemainingContractualTerm1" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageRemainingContractualTerm1" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="wms_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAddedByPerformanceFactor" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAddedByPerformanceFactor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="wms_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAddedByPerformanceFactorWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAddedByPerformanceFactorWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="wms_LiabilityClassifiedStockOptionsMember" abstract="true" name="LiabilityClassifiedStockOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallments" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="wms_EmployeeStockPurchasePlanMaximumSharesInOfferingPeriod" abstract="false" name="EmployeeStockPurchasePlanMaximumSharesInOfferingPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="wms_EmployeeStockPurchasePlanPurchaseDiscount" abstract="false" name="EmployeeStockPurchasePlanPurchaseDiscount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wms_EffectiveIncomeTaxRateReconciliationExecutiveCompensationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationExecutiveCompensationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_EffectiveIncomeTaxRateReconciliationExecutiveCompensation" abstract="false" name="EffectiveIncomeTaxRateReconciliationExecutiveCompensation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="wms_DeferredTaxAssetsNetLossOnAssetsAndLiabilitiesHeldForSale" abstract="false" name="DeferredTaxAssetsNetLossOnAssetsAndLiabilitiesHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_DeferredTaxAssetsValuationAllowanceHeldForSale" abstract="false" name="DeferredTaxAssetsValuationAllowanceHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_DeferredTaxAssetsAcqusitionCosts" abstract="false" name="DeferredTaxAssetsAcqusitionCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_DeferredTaxAssetsOperatingLeaseLiabilities" abstract="false" name="DeferredTaxAssetsOperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_IncomeTaxesTable" abstract="true" name="IncomeTaxesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="wms_IncomeTaxesLineItems" abstract="true" name="IncomeTaxesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="wms_RestrictedStockNonparticipatingMember" abstract="true" name="RestrictedStockNonparticipatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_PurchaseCommitmentContractPeriod" abstract="false" name="PurchaseCommitmentContractPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="wms_AccruedRebateLiabilityCurrent" abstract="false" name="AccruedRebateLiabilityCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_SellingGeneralAndAdministrativeAdjusted" abstract="false" name="SellingGeneralAndAdministrativeAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_SegmentAdjustedEBITDA" abstract="false" name="SegmentAdjustedEBITDA" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_ConsolidatedAdjustedEBITDA" abstract="false" name="ConsolidatedAdjustedEBITDA" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_TransactionCosts" abstract="false" name="TransactionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_OtherAdjustedEBITDAAdjustments" abstract="false" name="OtherAdjustedEBITDAAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_CorporateAndOtherAdjusted" abstract="false" name="CorporateAndOtherAdjusted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_OtherCountriesMember" abstract="true" name="OtherCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wms_SettlementPendingCommonStockRepurchase" abstract="false" name="SettlementPendingCommonStockRepurchase" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_ExciseTaxAccrualShareRepurchase" abstract="false" name="ExciseTaxAccrualShareRepurchase" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wms_ValuationAllowancesAndReservesChargedToCostAndExpenseIncome" abstract="false" name="ValuationAllowancesAndReservesChargedToCostAndExpenseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
