Resource Planning and Scheduling

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Resource Planning and

Scheduling

CSTM 462

“Resource Loading” Fall 2012


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Schedule

October 01/02- Resource Loading Lecture

October 03/04- ASiMI Lab

Week of October 08- No ClassDownload Software-Download instructionsgiven in October 03/04 Lab

October 15/16- Midterm- Lectures 1-7- OpenNotes during exam


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Float


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4

Schedule – Typical Critical Path Method


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Schedule – “RACS”

Resource Allocation Control System

5


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Resource Loading


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Resource Curve


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Importance of Resource Planning

and Scheduling

A network schedule that does not include

resource constraints assumes that an

unlimited quantity of resources is available

to the project. Schedules developedwithout resource constraints may not be

feasible or realistic when actual resources

are considered.


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The five categories of resource

planning techniques.

1. Resource Loading

2. Resource Aggregation

3. Resource Availability Analysis4. Resource-Constrained Scheduling

5. Resource Leveling


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Resource Loading

• Resource loading allows the planner to

assign resources such as labor,

equipment and materials to each activity in

the project schedule.

• These units might be craftsmen, pieces of

equipment or quantities of construction

materials.

• Craftsmen or equipment the norm.


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Loading the Schedule

Form Concrete

Six Carpenters

Fabricate Wall FormsEight Carpenters

Set Wall Forms

Five Carpenters

6 6 6 6 14 14 14 8 8 8 13 13 5 5 5 5 5 5


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Resource Aggregation

• Resource aggregation totals each type ofresource used in the schedule for each time unitbetween scheduled project start and finish.

• Look at the early and late start and finish dates.

• Remember your resource requirements for thecritical path doesn’t change only the floatactivities

• You like to see a bell curve on your resource

aggregation always keeping in mind the earlyand late dates on the items with float.

• EX-Average daily manpower per week graph


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Resource Availability Analysis

• Simply compares the amount of resources

required to the maximum amount of

resources that are available for use.

• In the real world can we get more

resources.


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Time-and-Resource-Constrained

Scheduling

• Time constrained or resource constrained.

• Time use an end date.

• Resources schedules the project onavailable resources.


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Resource Availability Analysis

• Simply compares the amount of resources

required to the maximum amount of resources

that are available for use

• In the real world can we get more resources.• When the assigned resources exceed those

available:

– Shift non-critical activities within the schedule

– Obtain more resources

– Extend the schedule to lower the demand during the

original schedule.


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Time and Resource

Constrained Scheduling• Schedules can be time constrained or

resource constrained but not both.

– Time use an end date

– Resource schedules the project on available

resources

• Time- get more resources

• Resource- a shortage extend the time


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Resource Leveling

• Attempts to keep the requirements for a construction resource asconstant as possible over the duration of the project.

• Non-critical activities are shifted within the schedule using theavailable total float in order to level resource usage and the plannedproject completion date is unchanged as a result of the levelingprocess.

• This techniques are used when the project duration is fixed.• Maximizing the effects of resource leveling requires performing both

a backward and forward pass again through the network.

• The primary objective is to reduce the peaks and valleys withoutincreasing the duration.

• Delaying those activities to the last available space.• Use of algorithms and the software program for this class.


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Leveling

Basically delaying the scheduled

performance of non-critical activities .

The daily total resource usage of the project

decreases at the beginning of the project

and increases at the end.


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Resource Curves

• The bell shape

• Leveling resources

• Planning tool• Tracking Tool


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Resource Leveling

– Some people in

the industry find it

too random

– Look at loading

and make

changes

– Getting

appropriate

information from

you

subcontractors.1

2 3 4 5 6 7 8 9 10 11 12

Before

After0

1

2

3

4

5

6

7

8

9

10

Equivalent Person

Time in Weeks

Resource Profile Before & After Leveling


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Resource Curve


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Float & Resource Leveling


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Float & Resource Leveling


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Advanced Scheduling andMeasuring Productivity Workshop 27

Schedule – “RACS” Resource Allocation Control System


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Advanced Scheduling andMeasuring Productivity Workshop 28

Schedule


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Documents

Resource Planning and Scheduling