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SPPU
BE CIVIL ENGINEERNG
Construction Management
© Mr. Shrikant R. Kate 1
Unit2.
Construction Scheduling
Shrikant R. Kate
...
Syllabus
• Construction scheduling, work study and work
measurement Construction scheduling.
• Construction project schedu...
Construction Project Scheduling
• Scheduling means putting the plan on a
calendar time scale.
• Purpose:
1. Simplification...
Factors Affecting Scheduling
1. Site management
2. Finance by contractors
3. Co-ordination among parties
4. Preparation of...
Steps In Project Scheduling
1. Calculation of detail control information
2. Assigning timings to events and activities
3. ...
Advantages of Scheduling
• Written plan and schedule motivates the
employees to accomplish project goals
• Communicating w...
Project Planning
• It consist of dividing project into activities and
establishing logical relationship between them
• Pro...
Work Breakdown Structure
• Dividing complex projects into simple and
manageable tasks for planning and controlling
purpose...
© Mr. Shrikant R. Kate 9
© Mr. Shrikant R. Kate 10Installation of Roof Top-PV system
© Mr. Shrikant R. Kate 11
Benefits of WBS
• Reducing the probability of important work missing.
• Precisely subdivide project into smaller work pack...
Project Work Break Down Levels
1. Sub Project Level: A sub project is defined as dividing
the project work into independen...
© Mr. Shrikant R. Kate 14
Line of Balance
• Line of balance is a management control process for
collecting, measuring and presenting facts relating ...
Line of Balance
• Advantages:
1. Indicates amount of work taking place in a
definite area at a specific time
2. Easier ana...
Scheduling with LOB
1. Prepare a logic diagram
2. To complete each operation, calculate the
estimated man hours
3. Select ...
Example of LOB
• Logic Diagram:
Earthwork Foundation Super Structure Finishing
5 days 10 days 20 days 10 days
• Logic Diag...
Unit II Part -B: Work Study and
Work Measurement
© Mr. Shrikant R. Kate 19
Work Study
• Defn: Systematic examination of the methods
of carrying out activities so as to improve the
effective use of ...
Importance of Work Study
• Increase productivity
• To find out improved technology
• Helps to set standard of performance
...
Techniques of Work Study
• Work Study is divided in two parts:
1. Method Study: used to examine the job and
finding out mo...
Objectives of Work Study
1. Improve total performance
2. Reduce time and cost of construction
3. Effective use of resource...
Advantages of Work Study
1. Reduce manufacturing cost
2. To find labour requirement
3. Provide better service to client
4....
Procedure of Work Study
1. Select-Job or any work
2. Record-by observation , collection of data
3. Examination-place , seq...
Method Study (Motion Study)
• Method study is conducted to simplify the
work or working methods which may result in
higher...
Objective of Motion Study
• Optimum use of resources
• Achieve economy in human efforts
• Improvement in layout
• Reductio...
Steps in Method Study
Defining existing method
Recording existing method
Examine existing method
Develop new method
Define...
Area where Method study required
• Required a high operating cost
• High wastage is produced
• Where overtime is utilized
...
Symbol used in Method study
• O-Operation
• - Inspection
• - Transport
• D- Delay
• - Storage
© Mr. Shrikant R. Kate 30
Work Measurement
• Defn: Is application of techniques designed to
establish time for qualified worker to carry out a
task ...
Procedure of Work Measurement
Select
Record
Examine
Measure
Compile
Define
© Mr. Shrikant R. Kate 32
Techniques of Work Measurement
1.Work sampling
2. Structured estimating
3. Time study and motion study
4. Predetermined ti...
Time Study
• Defn: Is a work measurement technique for
recording time of performing a certain specific
job carried out und...
Motion Study
• Invented by a scientist named Lillian Gilbreth
• The study is based on analysis of work motion
which includ...
Allowances
• Energy loss is experienced by worker while doing
a job and this efforts should be reduced to
minimum through ...
String Diagram
• The string diagram is scale or model on which
thread is used to trace and measure the path of
workers, ma...
© Mr. Shrikant R. Kate 38
Multiple Activity chart
• Chart on which the activities of more than one
subject (worker, machine, or item of
equipment) a...
© Mr. Shrikant R. Kate 40
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Construction Scheduling, Work Study and Work Measurement _ Unit 2 _ Construction Management _ Final Year (BE) _ Department of Civil Engineering _ TAE _ SPPU _ by Shrikant R. Kate

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Construction Scheduling, Work Study and Work Measurement _ Unit 2 _ Construction Management _ Final Year (BE) _ Department of Civil Engineering _ TAE _ SPPU _ by Shrikant R. Kate
Construction scheduling, work study and work measurement Construction scheduling.
Construction project scheduling – purpose, factors affecting scheduling, time as a control tool
Work Breakdown Structure, project work breakdown levels, line of balance technique
Repetitive project management Work study and work measurement
Definition, objectives, basic procedure of work study, symbols, activity charts, string diagrams, time and motion studies.

Construction Scheduling, Work Study and Work Measurement _ Unit 2 _ Construction Management _ Final Year (BE) _ Department of Civil Engineering _ TAE _ SPPU _ by Shrikant R. Kate

  1. 1. SPPU BE CIVIL ENGINEERNG Construction Management © Mr. Shrikant R. Kate 1 Unit2. Construction Scheduling Shrikant R. Kate BE Civil, M Tech Construction Management
  2. 2. Syllabus • Construction scheduling, work study and work measurement Construction scheduling. • Construction project scheduling – purpose, factors affecting scheduling, time as a control tool • Work Breakdown Structure, project work breakdown levels, line of balance technique • Repetitive project management Work study and work measurement • Definition, objectives, basic procedure of work study, symbols, activity charts, string diagrams, time and motion studies. © Mr. Shrikant R. Kate 2
  3. 3. Construction Project Scheduling • Scheduling means putting the plan on a calendar time scale. • Purpose: 1. Simplification of project plan 2. Time objectives 3. Optimization of resources 4. Forecasting 5. Implication of time and resource constraints © Mr. Shrikant R. Kate 3
  4. 4. Factors Affecting Scheduling 1. Site management 2. Finance by contractors 3. Co-ordination among parties 4. Preparation of schedule plans and updates 5. Experience of contractor 6. Method of construction 7. Foundation activities 8. Speed of decision making of owners 9. Availability of labour on site 10. Availability of staff to manage project 11. Availability of equipment 12. Availability of material 13. Availability of site © Mr. Shrikant R. Kate 4
  5. 5. Steps In Project Scheduling 1. Calculation of detail control information 2. Assigning timings to events and activities 3. Giving consideration to the resources 4. Allocation of resources © Mr. Shrikant R. Kate 5
  6. 6. Advantages of Scheduling • Written plan and schedule motivates the employees to accomplish project goals • Communicating with management, customer and other stakeholders is much easier with the schedule • Effective usage of all resources • Improves output of project • Helps to achieve project deadlines • Avoid overloading or underuse of resources • Reduces delivery time • Increases productivity © Mr. Shrikant R. Kate 6
  7. 7. Project Planning • It consist of dividing project into activities and establishing logical relationship between them • Project planning serves as a foundation for several functions such as cost estimating, scheduling, project control, quality control, safety management, etc • The purpose of project planning is to define each major task, estimate the time and resources required and provide an outline for management review and control © Mr. Shrikant R. Kate 7
  8. 8. Work Breakdown Structure • Dividing complex projects into simple and manageable tasks for planning and controlling purpose is called as WBS • In WBS, work is divided in small manageable work unit in hierarchical order into levels of sub divisions • WBS helps to recognize how the project will flow within a desired timeline established by Project Manager • WBS is pictorial representation of entire project • WBS is more effective for a complex project which comprises hundreds of events and activities © Mr. Shrikant R. Kate 8
  9. 9. © Mr. Shrikant R. Kate 9
  10. 10. © Mr. Shrikant R. Kate 10Installation of Roof Top-PV system
  11. 11. © Mr. Shrikant R. Kate 11
  12. 12. Benefits of WBS • Reducing the probability of important work missing. • Precisely subdivide project into smaller work packages, which makes task easier for project member. • Create effective schedule and accurate project costing. • Manage internal project team members as well as outsourced service providers. • It creates accountability. • Reduce risk of project failing to meet goals. • It illustrate the project scope, so the stakeholders can have a better understanding of the same. © Mr. Shrikant R. Kate 12
  13. 13. Project Work Break Down Levels 1. Sub Project Level: A sub project is defined as dividing the project work into independent large volume mini projects or task groups 2. Task Level: Project or sub-project work can be divided up into various tasks. 3. Work Package Level: Work package contains a sizable, identifiable, costable and controllable package of work 4. Activity Level: identifiable jobs, operations and processes which consumes time and possibly other resources and are necessary for its completion 5. Operation Level: Each operation contains a part of the work content of the activity. It generally has a particular type or a fixed group of resources associated with it © Mr. Shrikant R. Kate 13
  14. 14. © Mr. Shrikant R. Kate 14
  15. 15. Line of Balance • Line of balance is a management control process for collecting, measuring and presenting facts relating to time, cost and accomplishment - all measured against a specific plan • It illustrates the process, status, background, timing and phasing of the project activities which helps: 1. Comparison between actual progress and formal objective plan 2. From established plans, examining the deviations 3. Getting timely data and information regarding trouble areas and specifying those areas where suitable corrective action is required 4. Forecasting future performance © Mr. Shrikant R. Kate 15
  16. 16. Line of Balance • Advantages: 1. Indicates amount of work taking place in a definite area at a specific time 2. Easier analysis of cost and time optimization 3. Modification, update and changes can be easily made in schedule 4. Simpler and clearer resource management 5. Easy to supervision • Disadvantages: 1. Critical path of the project schedule cannot be generated 2. It could be divided only by location © Mr. Shrikant R. Kate 16
  17. 17. Scheduling with LOB 1. Prepare a logic diagram 2. To complete each operation, calculate the estimated man hours 3. Select buffer time which will lookout against the risk of interference between operations. 4. Calculate the requisite output target so as to meet a given project completion date 5. Complete LOB schedule © Mr. Shrikant R. Kate 17
  18. 18. Example of LOB • Logic Diagram: Earthwork Foundation Super Structure Finishing 5 days 10 days 20 days 10 days • Logic Diagram with buffers: Earthwork Buffer Foundation Buffer Super Stru. Buffer Finishing 5 days 5 days 10 days 5 days 20 days 5 days 10 days • Line of Balance: © Mr. Shrikant R. Kate 18
  19. 19. Unit II Part -B: Work Study and Work Measurement © Mr. Shrikant R. Kate 19
  20. 20. Work Study • Defn: Systematic examination of the methods of carrying out activities so as to improve the effective use of resources and set up standard of performance for the activities being carried out. © Mr. Shrikant R. Kate 20
  21. 21. Importance of Work Study • Increase productivity • To find out improved technology • Helps to set standard of performance • Contribute to improvement in safety and working condition • Relatively cheap and easy to apply • It can be used anywhere, ie. Offices, Laboratories, Industries, Distributors. © Mr. Shrikant R. Kate 21
  22. 22. Techniques of Work Study • Work Study is divided in two parts: 1. Method Study: used to examine the job and finding out more appropriate method of its performance 2. Work Measurement (Time Study): study of actual time required to complete the job and its elements © Mr. Shrikant R. Kate 22
  23. 23. Objectives of Work Study 1. Improve total performance 2. Reduce time and cost of construction 3. Effective use of resources 4. To evaluate the performance of labour 5. To assist management to obtain the optimum use of 3M’s © Mr. Shrikant R. Kate 23
  24. 24. Advantages of Work Study 1. Reduce manufacturing cost 2. To find labour requirement 3. Provide better service to client 4. Simplify the supervision 5. Finding various methods for incentive payment 6. Better utilization of resources 7. Increased quality of product 8. Increase in profit of organization © Mr. Shrikant R. Kate 24
  25. 25. Procedure of Work Study 1. Select-Job or any work 2. Record-by observation , collection of data 3. Examination-place , sequence, method 4. Develop-most new economical method 5. Establishment-standard of oraganization 6. Inspection-new method at regular interval © Mr. Shrikant R. Kate 25
  26. 26. Method Study (Motion Study) • Method study is conducted to simplify the work or working methods which may result in higher productivity with minimum consumption of resources • Method study consists of: 1. How well method utilizes the resources? 2. How selected methods affect output of production? 3. Quality of product obtained after application of selected methods. © Mr. Shrikant R. Kate 26
  27. 27. Objective of Motion Study • Optimum use of resources • Achieve economy in human efforts • Improvement in layout • Reduction in unnecessary fatigue • Improving plant and equipment design • Setting safety standards and procedure • Developing healthy environment for working in organization © Mr. Shrikant R. Kate 27
  28. 28. Steps in Method Study Defining existing method Recording existing method Examine existing method Develop new method Define new method Install new method Maintain new method © Mr. Shrikant R. Kate 28
  29. 29. Area where Method study required • Required a high operating cost • High wastage is produced • Where overtime is utilized • Rejection of product due to inefficiency • Want to improve quality of work • Adequacy of safety measures • Production of product goes on decrease continuously © Mr. Shrikant R. Kate 29
  30. 30. Symbol used in Method study • O-Operation • - Inspection • - Transport • D- Delay • - Storage © Mr. Shrikant R. Kate 30
  31. 31. Work Measurement • Defn: Is application of techniques designed to establish time for qualified worker to carry out a task at a defined rate of working • Purpose: 1. To provide standard working procedures 2. Work measurement consists of investigation and eliminating ineffective time 3. Eliminating unnecessary movement on part of machine or operation 4. Can be used to set standard time for carrying out work effectively © Mr. Shrikant R. Kate 31
  32. 32. Procedure of Work Measurement Select Record Examine Measure Compile Define © Mr. Shrikant R. Kate 32
  33. 33. Techniques of Work Measurement 1.Work sampling 2. Structured estimating 3. Time study and motion study 4. Predetermined time standards © Mr. Shrikant R. Kate 33
  34. 34. Time Study • Defn: Is a work measurement technique for recording time of performing a certain specific job carried out under specified condition and analyzing data so as to obtain the time necessary for an operator to carry it out • Steps in Time Study: 1. Select 2. Collect 3. Identify 4. Record 5. Establish © Mr. Shrikant R. Kate 34
  35. 35. Motion Study • Invented by a scientist named Lillian Gilbreth • The study is based on analysis of work motion which include the detailed study of workers activity while recording the time • Consist of: 1. Visual recording of how work had been done and provide more chance for improvement 2. Provide training to worker’s to give best performance © Mr. Shrikant R. Kate 35
  36. 36. Allowances • Energy loss is experienced by worker while doing a job and this efforts should be reduced to minimum through development of improved method and procedures • So some allowances should be made to minimize the stress suffered by worker • Types: 1. Relaxation Allowance 2. Contingency Allowance 3. Policy Allowance 4. Special Allowance © Mr. Shrikant R. Kate 36
  37. 37. String Diagram • The string diagram is scale or model on which thread is used to trace and measure the path of workers, material or equipment during a sequence of events. • Flow diagram to measure distance with help of string or thread • Prepared by recording all fact from direct observation • To find out how easily material or labour can travel • Useful for management to explain proposed change to supervisor or workers. © Mr. Shrikant R. Kate 37
  38. 38. © Mr. Shrikant R. Kate 38
  39. 39. Multiple Activity chart • Chart on which the activities of more than one subject (worker, machine, or item of equipment) are each recorded on common time scale to show their interrelationship. • It shows time of idleness of any subject • Easy to arrange activities of mass production work • Inspect number of machine at time © Mr. Shrikant R. Kate 39
  40. 40. © Mr. Shrikant R. Kate 40
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Construction Scheduling, Work Study and Work Measurement _ Unit 2 _ Construction Management _ Final Year (BE) _ Department of Civil Engineering _ TAE _ SPPU _ by Shrikant R. Kate Construction scheduling, work study and work measurement Construction scheduling. Construction project scheduling – purpose, factors affecting scheduling, time as a control tool Work Breakdown Structure, project work breakdown levels, line of balance technique Repetitive project management Work study and work measurement Definition, objectives, basic procedure of work study, symbols, activity charts, string diagrams, time and motion studies.

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