PROJECT PLANNING SCHEDULING TECHNIQUES RESOURCES SCHEDULING 2 Prof

PROJECT PLANNING & SCHEDULING TECHNIQUES RESOURCES SCHEDULING 2 Prof. Sanjay Bhoyar

Success of a project � Orderly & even progress of work � Continuous work without interruptions This is possible, if � Adequate volume of required resources � Correct combination of resources � Suitable skilled workers � Technologically adequate equipment � Standard/ required quality of materials NICMAR, PUNE SANJAY BHOYAR

Resources for a project MATERIALS are worked upon and converted to PROJECT DELIVERABLES by the assigned MANPOWER using its skills & efforts with or without help of EQUIPMENT MONEY is required for procuring other resources NICMAR, PUNE SANJAY BHOYAR

Resources scheduling: Scheduling the work for effective utilization of resources Resources identification � Resources allocation � Daily resource requirement Resources smoothing � Assigning the resources for each activity Resources aggregation � Set of resources required Time constrained scheduling Resources leveling � Resource constrained scheduling NICMAR, PUNE SANJAY BHOYAR

Resources scheduling: Early Start Schedule � Time scaled network Rescheduling the activities: � To reduce the peak requirement Shifting the start times of activities Stretching activities Splitting activities NICMAR, PUNE SANJAY BHOYAR

A (3) ESS L (2) B (2) M (3) N (2) A (2) Stretching B (2) Splitting L (2) M (3) A (3) Shifting Days DRR (ESS) B (2) 1 2 3 4 5 6 7 N (2) 8 9 10 11 12 13 14 N (2) 15 16 17 18 3 3 5 5 2 22 4 4 7 7 3 3 28 DRR (stretching) 2 2 4 4 2 22 4 5 5 DRR (Shifting) 3 3 2 2 2 NICMAR, PUNE 2 4 5 5 28 2 22 SANJAY BHOYAR

Purposes of Resources Scheduling: To know DRR To minimize idle time (and cost) of resources To decide the optimal size of resources to be procured To avoid over-allocations for resources NICMAR, PUNE SANJAY BHOYAR

Time-constrained Resources Scheduling: Reducing the peak resource requirement as low as possible Shifting/ stretching/ splitting activities � Within NICMAR, PUNE available floats SANJAY BHOYAR

Resource constrained scheduling: Reducing the peak resource requirement � To the resource limit Shifting/ stretching/ splitting activities � Firstly, within available floats � If required, beyond floats Project duration may extend NICMAR, PUNE SANJAY BHOYAR

Effectiveness of a schedule: Resource utilization factor (RUF)/ Effective force ratio (EFR): � RUF � Idle or EFR = Total resource-days required Peak resource requirement x project duration Force ratio (IFR) = 1 - EFR � Higher the RUF, more effective the resource utilization NICMAR, PUNE SANJAY BHOYAR

Effectiveness of a schedule… Based on Peak resource requirement � Lower the peak, more effective the resource utilization Burgess’ rule (Least square rule) � For comparable schedules, the one with least sum of the squares of the daily resource requirement is the most effective schedule. � Min, Σ(DRR)2 NICMAR, PUNE SANJAY BHOYAR

Activities, their durations & resource requirements are given below. Schedule the work for the most effective resource utilization. Activity Preceding activity Duration (days) Resource rate A - 6 5 B - 4 4 C A 9 6 D A 3 5 E B 7 4 F B 5 2 G C 4 6 H D, E 6 3 K F 3 2 L G 9 5 M F, H 5 7 N K 2 6 NICMAR, PUNE SANJAY BHOYAR

G/6 C/6 A/5 D/5 E/4 B/4 ESS H/3 DRR (ESS) M/7 F/2 K/2 Days L/5 1 2 3 4 15 16 17 23 24 25 26 27 28 ∑ 9 9 11 11 17 17 17 12 12 11 15 15 9 9 9 13 13 12 12 12 5 5 5 293 NICMAR, PUNE 5 6 7 8 9 10 11 12 N/6 13 14 18 19 20 21 22 SANJAY BHOYAR

G/6 C/6 A/5 ESS L/5 D/5 E/4 B/4 H/3 M/7 F/2 K/2 N/6 G/6 C/6 L/5 D/5 A/5 H/3 E/4 B/4 LSS M/7 F/2 Days DRR (ESS) DRR (LSS) 1 2 3 4 9 9 9 5 5 5 NICMAR, PUNE 5 6 14 15 16 17 18 22 23 24 25 26 27 28 ∑ 9 11 11 17 17 17 12 12 11 15 15 9 9 9 13 13 12 12 12 5 5 5 293 5 5 11 10 10 14 14 14 18 18 293 5 7 8 9 10 11 12 13 10 10 15 15 15 9 19 20 21 N/6 K/2 SANJAY BHOYAR

G/6 C/6 A/5 ESS L/5 D/5 E/4 B/4 H/3 M/7 F/2 K/2 N/6 G/6 C/6 D/5 A/5 H/3 E/4 B/4 TRIAL 1 L/5 M/7 F/2 N/6 K/2 Days DRR (ESS) DRR (Trial 1) 1 2 3 4 9 9 9 NICMAR, PUNE 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 22 23 24 25 26 27 28 ∑ 9 11 11 17 17 17 12 12 11 15 15 9 9 9 13 13 12 12 12 5 5 5 293 9 11 11 12 12 12 13 17 17 9 9 12 12 12 5 5 5 293 9 20 8 21 SANJAY BHOYAR

G/6 C/6 D/5 A/5 H/3 E/4 B/4 TRIAL 1 L/5 M/7 F/2 N/6 K/2 G/6 C/6 D/5 A/5 H/3 E/4 B/4 TRIAL 2 L/5 M/7 F/2 N/6 K/2 Days DRR (Trial 1) DRR (Trial 2) 1 2 3 4 9 9 9 NICMAR, PUNE 5 6 14 15 16 17 18 19 20 21 25 26 27 28 ∑ 9 11 11 12 12 12 13 17 17 9 9 9 8 12 12 12 5 5 5 293 9 9 9 11 11 10 12 12 12 11 11 5 293 9 7 8 9 10 11 12 13 12 12 12 11 11 11 22 23 24 SANJAY BHOYAR

G/6 C/6 A/5 ESS L/5 D/5 E/4 B/4 H/3 M/7 F/2 K/2 N/6 G/6 C/6 D/5 A/5 H/3 E/4 B/4 TRIAL 2 L/5 M/7 F/2 N/6 K/2 Days DRR (ESS) DRR (Trial 2) 1 2 3 4 9 9 9 NICMAR, PUNE 5 6 14 15 16 17 18 22 23 24 25 26 27 28 ∑ 9 11 11 17 17 17 12 12 11 15 15 9 9 9 13 13 12 12 12 5 5 5 293 9 9 9 11 11 10 12 12 12 11 11 5 293 9 7 8 9 10 11 12 13 12 12 12 11 11 11 19 20 21 SANJAY BHOYAR

NICMAR, PUNE SANJAY BHOYAR

Schedule the work if maximum size of resource is limited to 10. NICMAR, PUNE SANJAY BHOYAR

G/6 C/6 L/5 D/5 A/5 H/3 E/4 B/4 Smoothened resources M/7 F/2 TRIAL 2 N/6 K/2 G/6 C/6 L/5 D/5 A/5 H/3 E/4 B/4 N/6 K/2 DRR (Trial 2) DRR (Trial 4) M/7 F/2 TRIAL 3 Days Leveled resources 1 2 3 4 5 6 7 9 9 9 12 12 12 11 11 11 9 9 9 11 11 10 12 12 12 11 11 5 9 9 9 10 10 10 8 7 7 7 5 NICMAR, PUNE 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 8 8 9 9 9 8 5 5 ∑ 293 5 5 5 7 7 7 SANJAY BHOYAR 293