composite crews in construction cost estimating

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CONSTRUCTION COST ESTIMATING COMPOSITE CREW RATES

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Page 1: Composite Crews in Construction Cost Estimating

CONSTRUCTION COST ESTIMATING

COMPOSITE CREW RATES

Page 2: Composite Crews in Construction Cost Estimating

What is a crew and how is it used in cost estimating?

Page 3: Composite Crews in Construction Cost Estimating

CREW DEFINITION

Page 4: Composite Crews in Construction Cost Estimating

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”

Page 5: Composite Crews in Construction Cost Estimating

CONSTRUCTION CREWS

Page 6: Composite Crews in Construction Cost Estimating

CONSTRUCTION CREWS

• CONSTRUCTION CREWS ARE RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.

Page 7: Composite Crews in Construction Cost Estimating

CONSTRUCTION CREWS• CONSTRUCTION CREWS ARE

RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.• CONSTRUCTION CREWS

RESOURCES:

Page 8: Composite Crews in Construction Cost Estimating

CONSTRUCTION CREWS• CONSTRUCTION CREWS ARE

RESOURCES, SELECTED AND GROUPED TOGETHER FOR THE PURPOSE OF PERFORMING SPECIFIC CONSTRUCTION TASKS/ACTIVITIES.• CONSTRUCTION CREWS

RESOURCES:• LABOUR

Page 9: Composite Crews in Construction Cost Estimating

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

Page 10: Composite Crews in Construction Cost Estimating

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)

Page 11: Composite Crews in Construction Cost Estimating

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)

Page 12: Composite Crews in Construction Cost Estimating

TYPES OF CONSTRUCTION CREWS

Page 13: Composite Crews in Construction Cost Estimating

TYPES OF CONSTRUCTION CREWS

• LABOUR DRIVEN

Page 14: Composite Crews in Construction Cost Estimating

TYPES OF CONSTRUCTION CREWS

• LABOUR DRIVEN • THE PERFORMANCE OF THE CREW IS BASED ON

THE OVERALL PERFORMANCE OF THE LABOUR COMPONENT

Page 15: Composite Crews in Construction Cost Estimating

TYPES OF CONSTRUCTION CREWS

• LABOUR DRIVEN • THE PERFORMANCE OF THE CREW IS BASED ON

THE OVERALL PERFORMANCE OF THE LABOUR COMPONENT

• EQUIPMENT DRIVEN

Page 16: Composite Crews in Construction Cost Estimating

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

Page 17: Composite Crews in Construction Cost Estimating

WHY USE CONSTRUCTION CREWS

Page 18: Composite Crews in Construction Cost Estimating

WHY USE CONSTRUCTION CREWS

• CONSTRUCTION OF A PROJECT IS A PROCESS COMPOSED OF CONSTRUCTION ACTIVITIES/TASKS WHICH ARE CAREFULLY PLANNED FOR OPTIMAL PROJECT PERFORMANCE.

Page 19: Composite Crews in Construction Cost Estimating

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.

Page 20: Composite Crews in Construction Cost Estimating

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.

Page 21: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION

Page 22: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION

• EXPERIENCE

Page 23: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:CONSTRUCTION CREW COMPOSITION

• EXPERIENCE• THE BEST WAY TO DETERMINE CONSTRUCTION

CREW COMPOSITION IS FROM EXPERIENCE ON PREVIOUS PROJECTS

Page 24: Composite Crews in Construction Cost Estimating

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

Page 25: Composite Crews in Construction Cost Estimating

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.

Page 26: Composite Crews in Construction Cost Estimating

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

Page 27: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:

CONSTRUCTION CREW PERFORMANCE

Page 28: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:

CONSTRUCTION CREW PERFORMANCE

• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND

ADJUST FOR:

Page 29: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:

CONSTRUCTION CREW PERFORMANCE

• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND

ADJUST FOR:

• SITE CONDITIONS

Page 30: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:

CONSTRUCTION CREW PERFORMANCE

• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND

ADJUST FOR:

• SITE CONDITIONS

• PROJECT LOCATION

Page 31: Composite Crews in Construction Cost Estimating

HOW TO PLAN FOR:

CONSTRUCTION CREW PERFORMANCE

• USE OF KNOWN (OR ESTIMATED) PERFORMANCE AND

ADJUST FOR:• SITE CONDITIONS

• PROJECT LOCATION

• SUPERVISION

Page 32: Composite Crews in Construction Cost Estimating

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)

Page 33: Composite Crews in Construction Cost Estimating

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

Page 34: Composite Crews in Construction Cost Estimating

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

Page 35: Composite Crews in Construction Cost Estimating

PLANNED VS ACTUAL PERFORMANCE

Page 36: Composite Crews in Construction Cost Estimating

PLANNED VS ACTUAL PERFORMANCE

CREW PERFORMANCE IS THE AMOUNT OF UNITS PER HOUR.

Page 37: Composite Crews in Construction Cost Estimating

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.

Page 38: Composite Crews in Construction Cost Estimating

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.

Page 39: Composite Crews in Construction Cost Estimating

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.

Page 40: Composite Crews in Construction Cost Estimating

COMPOSITE CREW RATES DATA

Page 41: Composite Crews in Construction Cost Estimating

COMPOSITE CREW RATES DATA

USING COMPOSITE CREWS TO DEVELOP COST ESTIMATING IS THE MOST ACCURATE METHOD.

Page 42: Composite Crews in Construction Cost Estimating

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:

Page 43: Composite Crews in Construction Cost Estimating

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

Page 44: Composite Crews in Construction Cost Estimating

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

Page 45: Composite Crews in Construction Cost Estimating

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.

Page 46: Composite Crews in Construction Cost Estimating

COST ESTIMATING CHALLENGES

Page 47: Composite Crews in Construction Cost Estimating

COST ESTIMATING CHALLENGES

• ACCESS TO EXISTING, VALIDATED DATA

Page 48: Composite Crews in Construction Cost Estimating

COST ESTIMATING CHALLENGES

• ACCESS TO EXISTING, VALIDATED DATA• BALANCE THE JUDGEMENT OF ADJUSTING

FACTORS

Page 49: Composite Crews in Construction Cost Estimating

COST ESTIMATING CHALLENGES

• ACCESS TO EXISTING, VALIDATED DATA• BALANCE THE JUDGEMENT OF ADJUSTING

FACTORS • KEEPING UP WITH NEW CONSTRUCTION

TECHNOLOGIES

Page 50: Composite Crews in Construction Cost Estimating

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

Page 51: Composite Crews in Construction Cost Estimating

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.

Page 52: Composite Crews in Construction Cost Estimating

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