AACE International Recommended Practice No. 10S-90
COST ENGINEERING TERMINOLOGY - REVISION HISTORY
TCM Framework: General Reference (All Sections)

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Changes in October 10, 2019 revision:

COST BREAKDOWN STRUCTURE (CBS) (revised)
COST ELEMENT (revised)
RECASTING (new)

Changes in April 26, 2019 revision:

UNCERTAINTY (revised)

Changes in April 17, 2019 revision:

COST ENGINEER (revised)
COST ENGINEERING (new)
PROJECT ATTRIBUTES (new)

Changes is October 8, 2018 revision:

BROWNFIELD (new)
GREENFIELD (new)

Changes in October 5, 2018 revision:

AS-OF DATE (revised)
COMMON CAUSE VARIATION (new)
DATA DATE (revised)
RECOMMENDED PRACTICE (RP) (new)
SCHEDULE REVISION (revised)
SCHEDULE UPDATE (revised)
SPECIAL CAUSE VARIATION (new)
STATUSING (revised)
TIME NOW (revised)
UNCERTAINTY (revised)
UPDATE DATE (revised)

Changes in June 20, 2018 revision:

HALF-STEP/DUAL-TRACKING SCHEDULE UPDATES (new)
SCHEDULE LOG (new)

Changes in October 31, 2017 revision:

RESOURCE (revised)

Changes in October 18, 2017 revision:

MERGE POINT (new)
SCHEDULE REPORT (revised)
SCHEDULE UPDATE NARRATIVE (new)

Changes in June 6, 2017 revision:

FRAGNET (revised)
IMPACTED SCHEDULE (new)
TARGET ACTIVITY (new)
UNIMPACTED SCHEDULE (new)

Changes in December 28, 2016 revision:

PROCUREMENT LOG (new)
PROCUREMENT SCHEDULE (new)
SUBMITTAL (new)
SUBMITTAL LOG (new)
SUBMITTAL PACKAGE (new)
SUBMITTAL PROCESS (new)
SUBMITTAL STATUS (new)

Changes in November 23, 2016 revision:

ACCURACY (new)
PRECISION (new)

Changes in March 1, 2016 revision:

EARNED SCHEDULE (ES) (revised)
INDEPENDENT ESTIMATE AT COMPLETION (IAEC) (new)
INDEPENDENT ESTIMATE AT COMPLETION [IAEC(t)] (revised)

Changes in January 28, 2016 revision:

QUALITY AUDIT (revised)
PROJECT SUMMARY WORK BREAKDOWN STRUCTURE (deleted)
PROJECT WORK BREAKDOWN STRUCTURE (new)
WORK PACKAGE (revised)

Changes in September 22, 2015 revision:

ADVERSE WEATHER (new)
NORMAL WEATHER (revised)
PLANNED ADVERSE WEATHER DAY (new)
SEVERE WEATHER (new)
UNUSUALLY ADVERSE WEATHER DAY (new)
UNUSUALLY SEVERE WEATHER (deleted)
WEATHER DAY (new)
WEATHER EVENT (new)
WEATHER PREPARATION DAY (new)
WEATHER RECOVERY DAY (new)

Changes in November 14, 2014 revision:

ACTUAL TIME (AT) (new)
APPORTIONED EFFORT (revised)
EARNED SCHEDULE (ES) (new)
ESTIMATE AT COMPLETION [EAC(t)] (new)
INDEPENDENT ESTIMATE AT COMPLETION [IEAC(t)] (new)
LEVEL OF EFFORT (LOE) (revised)
PLANNED DURATION (PD) (new)
PLANNED DURATION OF WORK REMAINING (PDWR) (new)
SCHEDULE PERFORMANCE INDEX [SPI(t)] (new)
SCHEDULE VARIANCE [SV(t)] (new)
VARIANCE AT COMPLETION [VAC(t)] (new)

Changes in January 14, 2014 revision:

CREW (new)
DAILY CREW OUTPUT (new)
LABOR NORM (new)
LABOR NORM PREAMBLE (new)
LABOR PRODUCTIVITY NORM (new)
LEVEL OF EFFORT (LOE) (revised)
LOGIC - DYNAMIC (CONDITIONAL) (new)
LOGIC - STATIC (FIXED) (new)
ORGANIZATION BREAKDOWN STRUCTURE (OBS) (revised)
RESPONSIBILITY ASSIGNMENT MATRIX (RAM) (revised)

Changes in October 23, 2013 revision:

50/50 TECHNIQUE (new)
ACCRUAL (new)
ACTUAL COSTS (deleted)
ACTUAL COST (AC) (new)
ACTUAL COST OF WORK PERFORMED (ACWP) (revised)
APPORTIONED EFFORT (revised)
BASELINE (revised)
BUDGET AT COMPLETION (BAC) (new)
BUDGETED COST OF WORK PERFORMED (BCWP) (revised)
BUDGETED COST OF WORK SCHEDULED (BCWS) (revised)
BURDEN (revised)
CHANGE NOTICE (revised)
CONTRACT BUDGET BASE (CBB) (new)
CONTROL ACCOUNT (CA) (revised)
CONTROL ACCOUNT MANAGER (CAM) (new)
COST ELEMENT (new)
COST PERFORMANCE REPORT (CPR) (new)
EARNED VALUE (EV) (revised)
EARNED VALUE MANAGEMENT [SYSTEM] (EVM[S]) (revised)
EQUIVALENT UNITS TECHNIQUE (new)
ESTIMATE TO COMPLETE (ETC) (revised)
ESTIMATED ACTUAL COSTS (new)
FORMAL REPROGRAMMING (new)
INCREMENTAL MILESTONE TECHNIQUE (new)
INDIRECT COSTS (revised)
INTEGRATED PRODUCT TEAMS (IPT) (new)
LABOR EFFICIENCY VARIANCE (new)
LABOR RATE VARIANCE (new)
MANAGEMENT RESERVE (revised)
NEAR-CRITICAL ACTIVITY (revised)
NEGATIVE LAG (new)
ORGANIZATION BREAKDOWN STRUCTURE (OBS) (revised)
OVER TARGET BASELINE (OTB) (new)
OVER TARGET SCHEDULE (OTS) (new)
PERCENT COMPLETE (new)
PERFORMANCE MEASUREMENT BASELINE (revised)
PHYSICAL PERCENTAGE COMPLETE (revised)
PLANNED VALUE (PV) (revised)
REPLANNING (revised)
REPROGRAMMING (revised)
RESPONSIBILITY ASSIGNMENT MATRIX (RAM) (new)
ROLLING WAVE PLANNING (revised)
RUBBER BASELINE (new)
SCHEDULE BASELINE (new)
SCHEDULE CONTINGENCY (revised)
SCHEDULE MARGIN (SM) (revised)
SCHEDULE RESERVE (new)
SCHEDULE TRACEABILITY (new)
STATUS DATE (revised)
SUMMARY LEVEL PLANNING PACKAGE (SLPP) (new)
SUMMARY SCHEDULE (revised)
SUMMARY TASK (revised)
TARGET (new)
TECHNICAL PERFORMANCE MEASUREMENT (new)
TO COMPLETE PERFORMANCE INDEX (TCPI) (new)
TOTAL ALLOCATED BUDGET (TAB) (new)
TRACEABILITY (new)
UNDISTRIBUTED BUDGET (UB) (new)
VARIANCE AT COMPLETION (VAC) (revised)
VARIANCE THRESHOLD (new)
WORK BREAKDOWN STRUCTURE (WBS) (revised)
WORK PACKAGE (revised)

Changes in October 17, 2013 revision:

MANAGEMENT SCHEDULE RESERVE (MSR) (new)
SCHEDULE BUFFER (new)
SCHEDULE CONTINGENCY (revised)
SCHEDULE MARGIN (new)

Changes in October 10, 2013 revision:

CONTINGENCY (revised)
DE-SCOPE (new)
MANAGEMENT RESERVE (MR) (revised)

Changes in April 25, 2013 revision:

RISK MANAGEMENT TEAM (new)
ENTERPRISE RISK MANAGEMENT (new)

Changes in November 3, 2012 revision:

COST ESTIMATING (revised)
COST ESTIMATOR (PROJECT) (new)

Changes in August 24, 2012 revision:

RISK SAFEGUARD (new)
RISK CONTAINMENT (new)