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CONSTRUCTION COST ESTIMATING
COMPOSITE CREW RATES
What is a crew and how is it used in cost estimating?
CREW DEFINITION
CREW DEFINITION
MERRIAM WEBSTER DICTIONARY DEFINES A CREW
AS:
“ A COMPANY OF PEOPLE WORKING ON ONE JOB, OR UNDER ONE FOREMAN, OR
OPERATING A MACHINE”
CONSTRUCTION CREWS
CONSTRUCTION CREWS
• CONSTRUCTION CREWS ARE RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.
CONSTRUCTION CREWS• CONSTRUCTION CREWS ARE
RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.• CONSTRUCTION CREWS
RESOURCES:
CONSTRUCTION CREWS• CONSTRUCTION CREWS ARE
RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.• CONSTRUCTION CREWS
RESOURCES:• LABOUR
CONSTRUCTION CREWS• CONSTRUCTION CREWS ARE
RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.• CONSTRUCTION CREWS RESOURCES:• LABOUR• CONSTRUCTION EQUIPMENT
CONSTRUCTION CREWS• CONSTRUCTION CREWS ARE
RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.• CONSTRUCTION CREWS RESOURCES:• LABOUR• CONSTRUCTION EQUIPMENT• SMALL TOOLS (OPTIONAL)
CONSTRUCTION CREWS• CONSTRUCTION CREWS ARE RESOURCES,
SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.• CONSTRUCTION CREWS RESOURCES:• LABOUR• CONSTRUCTION EQUIPMENT• SMALL TOOLS (OPTIONAL)• TEMPORARY CONSTRUCTION
MATERIALS (OPTIONAL)
TYPES OF CONSTRUCTION CREWS
TYPES OF CONSTRUCTION CREWS
• LABOUR DRIVEN
TYPES OF CONSTRUCTION CREWS
• LABOUR DRIVEN • THE PERFORMANCE OF THE CREW IS BASED ON
THE OVERALL PERFORMANCE OF THE LABOUR COMPONENT
TYPES OF CONSTRUCTION CREWS
• LABOUR DRIVEN • THE PERFORMANCE OF THE CREW IS BASED ON
THE OVERALL PERFORMANCE OF THE LABOUR COMPONENT
• EQUIPMENT DRIVEN
TYPES OF CONSTRUCTION CREWS• LABOUR DRIVEN • THE PERFORMANCE OF THE CREW IS BASED ON
THE OVERALL PERFORMANCE OF THE LABOUR COMPONENT
• EQUIPMENT DRIVEN• THE PERFORMANCE OF THE CREW IS BASED ON
THE OVERALL PERFORMANCE OF THE EQUIPMENT COMPONENT
WHY USE CONSTRUCTION CREWS
WHY USE CONSTRUCTION CREWS
• CONSTRUCTION OF A PROJECT IS A PROCESS COMPOSED OF CONSTRUCTION ACTIVITIES/TASKS WHICH ARE CAREFULLY PLANNED FOR OPTIMAL PROJECT PERFORMANCE.
WHY USE CONSTRUCTION CREWS• CONSTRUCTION OF A PROJECT IS A PROCESS
COMPOSED OF CONSTRUCTION ACTIVITIES/TASKS WHICH ARE CAREFULLY PLANNED FOR OPTIMAL PROJECT PERFORMANCE.
• WE USE CREWS IN COST ESTIMATING TO PLAN AN EXPECTED PROJECT PERFORMANCE.
WHY USE CONSTRUCTION CREWS• CONSTRUCTION OF A PROJECT IS A PROCESS
COMPOSED OF CONSTRUCTION ACTIVITIES/TASKS WHICH ARE CAREFULLY PLANNED FOR OPTIMAL PROJECT PERFORMANCE.
• WE USE CREWS IN COST ESTIMATING TO PLAN AN EXPECTED PROJECT PERFORMANCE.
• WE USE CREWS TO MEASURE ACTUAL PERFORMANCE AND IMPROVE THE PROCESS FOR BETTER FUTURE PERFORMANCE.
HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION
HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION
• EXPERIENCE
HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION
• EXPERIENCE• THE BEST WAY TO DETERMINE CONSTRUCTION
CREW COMPOSITION IS FROM EXPERIENCE ON PREVIOUS PROJECTS
HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION
• EXPERIENCE• THE BEST WAY TO DETERMINE CONSTRUCTION
CREW COMPOSITION IS FROM EXPERIENCE ON PREVIOUS PROJECTS
• COMMERCIALLY AVAILABLE DATA
HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION
• EXPERIENCE• THE BEST WAY TO DETERMINE CONSTRUCTION
CREW COMPOSITION IS FROM EXPERIENCE ON PREVIOUS PROJECTS
• COMMERCIALLY AVAILABLE DATA• THIS IS ONLY RECOMMENDED TO USE AS A
STARTING POINT. IT SHOULD NOT BE USED IN A COST ESTIMATE, UNLESS IT CAN BE VALIDATED.
HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION
• EXPERIENCE• THE BEST WAY TO DETERMINE CONSTRUCTION
CREW COMPOSITION IS FROM EXPERIENCE ON PREVIOUS PROJECTS
• COMMERCIALLY AVAILABLE DATA• THIS IS ONLY RECOMMENDED TO USE AS A
STARTING POINT. IT SHOULD NOT BE USED IN A COST ESTIMATE, UNLESS IT CAN BE VALIDATED.
• THROUGH CONSULTATION WITH CONSTRUCTION PROFESSIONALS EXPERIENCED IN THE TYPE OF PROJECT
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND
ADJUST FOR:
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND
ADJUST FOR:
• SITE CONDITIONS
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND
ADJUST FOR:
• SITE CONDITIONS
• PROJECT LOCATION
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND
ADJUST FOR:• SITE CONDITIONS
• PROJECT LOCATION
• SUPERVISION
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND
ADJUST FOR:
• SITE CONDITIONS
• PROJECT LOCATION
• SUPERVISION
• PROJECT LEVEL OF STRESS (SCHEDULE DRIVEN
PROJECTS)
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND
ADJUST FOR:• SITE CONDITIONS
• PROJECT LOCATION
• SUPERVISION
• PROJECT LEVEL OF STRESS (SCHEDULE DRIVEN PROJECTS)
• OVERTIME/SHIFT WORK
HOW TO PLAN FOR:
CONSTRUCTION CREW PERFORMANCE
• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND ADJUST FOR:
• SITE CONDITIONS
• PROJECT LOCATION
• SUPERVISION
• PROJECT LEVEL OF STRESS (SCHEDULE DRIVEN PROJECTS)
• OVERTIME/SHIFT WORK
• RISK: EXTREME WEATHER, ECONOMIC CONDITIONS,
ENVIRONMENTAL RESTRAINS
PLANNED VS ACTUAL PERFORMANCE
PLANNED VS ACTUAL PERFORMANCE
CREW PERFORMANCE IS THE AMOUNT OF UNITS PER HOUR.
PLANNED VS ACTUAL PERFORMANCE
CREW PERFORMANCE IS THE AMOUNT OF UNITS PER HOUR. • PLANNED OR ESTIMATED PERFORMANCE IS
CALLED PRODUCTION RATE. IT IS THE AMOUNT OF UNITS WE EXPECT THE CREW TO COMPLETE IN AN HOUR, BASED ON PROJECT SPECIFIC CONDITIONS.
PLANNED VS ACTUAL PERFORMANCECREW PERFORMANCE IS THE AMOUNT OF UNITS PER HOUR. • PLANNED OR ESTIMATED PERFORMANCE IS
CALLED PRODUCTION RATE. IT IS THE AMOUNT OF UNITS WE EXPECT THE CREW TO COMPLETE IN AN HOUR, BASED ON PROJECT SPECIFIC CONDITIONS.• ACTUAL PERFORMANCE IS CALLED
PRODUCTIVITY. PRODUCTIVITY IS THE ACTUAL AMOUNT OF UNITS COMPLETED BY THE CREW IN AN HOUR.
PLANNED VS ACTUAL PERFORMANCECREW PERFORMANCE IS THE AMOUNT OF UNITS PER HOUR. • PLANNED OR ESTIMATED PERFORMANCE IS CALLED
PRODUCTION RATE. IT IS THE AMOUNT OF UNITS WE EXPECT THE CREW TO COMPLETE IN AN HOUR, BASED ON PROJECT SPECIFIC CONDITIONS.• ACTUAL PERFORMANCE IS CALLED PRODUCTIVITY.
PRODUCTIVITY IS THE ACTUAL AMOUNT OF UNITS COMPLETED BY THE CREW IN AN HOUR.
EFFICIENCY IS PRODUCTION RATE DIVIDED BY PRODUCTIVITY. WE MEASURE EFFICIENCY AND USE IT TO ADJUST PERFORMANCE.
COMPOSITE CREW RATES DATA
COMPOSITE CREW RATES DATA
USING COMPOSITE CREWS TO DEVELOP COST ESTIMATING IS THE MOST ACCURATE METHOD.
COMPOSITE CREW RATES DATA
USING COMPOSITE CREWS TO DEVELOP COST ESTIMATING IS THE MOST ACCURATE METHOD. IT ALSO SERVES THE PURPOSE OF EXTRACTING DATA FOR VARIOUS PURPOSES:
COMPOSITE CREW RATES DATA
USING COMPOSITE CREWS TO DEVELOP COST ESTIMATING IS THE MOST ACCURATE METHOD. IT ALSO SERVES THE PURPOSE OF EXTRACTING DATA FOR VARIOUS PURPOSES:
• SCHEDULING
COMPOSITE CREW RATES DATA
USING COMPOSITE CREWS TO DEVELOP COST ESTIMATING IS THE MOST ACCURATE METHOD. IT ALSO SERVES THE PURPOSE OF EXTRACTING DATA FOR VARIOUS PURPOSES:
• SCHEDULING
• CASH FLOW
COMPOSITE CREW RATES DATAUSING COMPOSITE CREWS TO DEVELOP COST ESTIMATING IS THE MOST ACCURATE METHOD. IT ALSO SERVES THE PURPOSE OF EXTRACTING DATA FOR VARIOUS PURPOSES:
• SCHEDULING
• CASH FLOW
• UNIT RATES: LABOUR AND EQUIPMENT COST, MAN-HOURS AND CREW HOURS.
COST ESTIMATING CHALLENGES
COST ESTIMATING CHALLENGES
• ACCESS TO EXISTING, VALIDATED DATA
COST ESTIMATING CHALLENGES
• ACCESS TO EXISTING, VALIDATED DATA• BALANCE THE JUDGEMENT OF ADJUSTING
FACTORS
COST ESTIMATING CHALLENGES
• ACCESS TO EXISTING, VALIDATED DATA• BALANCE THE JUDGEMENT OF ADJUSTING
FACTORS • KEEPING UP WITH NEW CONSTRUCTION
TECHNOLOGIES
COST ESTIMATING CHALLENGES• ACCESS TO EXISTING, VALIDATED DATA• BALANCE THE JUDGEMENT OF ADJUSTING
FACTORS • KEEPING UP WITH NEW CONSTRUCTION
TECHNOLOGIES• ESTIMATING A TYPE OF PROJECT FOR THE
FIRST TIME
COST ESTIMATING CHALLENGES• ACCESS TO EXISTING, VALIDATED DATA• BALANCE THE JUDGEMENT OF ADJUSTING
FACTORS • KEEPING UP WITH NEW CONSTRUCTION
TECHNOLOGIES• ESTIMATING A TYPE OF PROJECT FOR THE
FIRST TIME• OTHERS. THERE IS NO SHORTAGE OF
CHALLENGES THAT A COST ESTIMATOR HAS TO OVERCOME. LEARNING WHERE TO TURN FOR GUIDANCE IS THE IMPORTANT THING TO KNOW.
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