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UnitIII.docx

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2

Schedule Management

Unit III

Schedule Management

A well-designed and developed method will ensure all the activities are conducted on time and all variables are integrated into the plan.

Activities

Responsible party

Estimation technique

Preparation of drawing

Architecture

Three-point estimates technique

Estimation of material cost

Surveyor

Three-point estimates technique

Estimation of labor costs &contingencies

Surveyor

Three-point estimates technique

Preparation of a formal drawing of the project.

Architect

Three-point estimates technique

Approval of the drawing from the authority.

Project manager

Fixed duration

Marking the ground

Case engineer

Three-point estimates technique

Cleaning the marked ground

Casual workers

Three-point estimates technique

Marking the ground-based on accurate dimensions

Casual workers

Fixed duration

Excavation

Casual workers

Fixed duration

Compacting the ground

Lead mansion

Fixed duration

Putting solid bases on which footing can be placed.

Lead mansion

Three-point estimates technique

Footing replacement

Lead mansion

Three-point estimates technique

Shuttering

Lead mansion

Three-point estimates technique

Footing concrete

Lead mansion

Three-point estimates technique

Column costing

Lead mansion

Three-point estimates technique

Constructing the base of the wall

Lead mansion

Fixed duration

Wall construction

Lead mansion

Fixed duration

Reinforcing openings using cement concrete

Lead mansion

Fixed duration

Pouring the roof slab

Lead mansion

Fixed duration

Fixing doors and windows

Lead mansion

Fixed duration

Fixing electrical works

Electrical technician

Fixed duration

Fixing plumbing work

Lead plumber

Fixed duration

Tiles laying

Lead mansion

Fixed duration

Painting

Interior designing team leader

Fixed duration

Terrace waterproofing

Lead plumber

Three-point estimates technique

Part A: Defining activities

Activity

Definition

Preparation of drawing

Involves laying a sketch of the building based on the client’s preferences.

Estimation of material cost

Involves estimating the cost incurred in acquiring the materials needed for the building.

Estimation of labor costs &contingencies

This involves estimating the budget that should be prepared to cater for labor and other costs that may come along the way.

Preparation of a formal drawing of the project.

After reconciling it with the client’s needs and preferences and the most cost-effective plan, this involves drawing the final building.

Approval of the drawing from the authority.

The authorities must approve the building based on whether it meets the building plan policies.

Marking the ground

It involves going to the space where the homebuilding will be established and putting on marks that identify the proposed space size.

Cleaning the marked ground

This involves clearing the ground cover to provide a clear space for the structure.

Marking the ground-based on accurate dimensions

The project team marks the ground based on the proposed solutions.

Excavation

It involves digging the trenches where the foundation lays in.

Compacting the ground

This involves trimming the excavation pits.

Putting solid bases on which footing can be placed.

This involves identifying the concrete to enforce the foundation.

Footing replacement

This involves tying together steel bars.

Shuttering

This is done to ensure the concrete attains its proper shape and prevents it from coming into contact with the soil.

Footing concrete

This involves leveling the foundation.

Column casting

The shuttering framework is shuttered, and concrete poured on the

Constructing the base of the wall

This involves using a solid material to ensure the walls are well-supported.

Wall construction

It involves building the walls using bricks.

Reinforcing openings using cement concrete

This involves putting cement concrete on the upper end of the window and door opening.

Pouring the roof slab

The roof is reinforced with a concrete slab.

Fixing doors and windows

Involves placing the windows and doors on the opening.

Fixing electrical works

This involves putting on the electrical wiring and bulbs or sockets.

Fixing plumbing work

Involves piping and ensuring the water can flow through the pipes across the building.

Tiles laying

Tiles are laid on the floor and the kitchen and bathroom walls.

Painting

Involves painting the exterior and the interior of the house.

Terrace waterproofing

This is done to ensure the running rainwater is harvested and the flow controlled within the compound to prevent flooding.

Part B: Assess activity durations

In assessing the duration of the activities, the PERT method is used. This follows the formula (O+4M+P)/6, where P is pessimistic, O is optimistic, and M is most likely (Bagshaw, 2018).

Activity

Duration

Preparation of drawing

14 days

Estimation of material cost

Seven days

Estimation of labor costs &contingencies

Seven days

Preparation of a formal drawing of the project.

Seven days

Approval of the drawing from the authority.

Three days

Marking the ground

One day

Cleaning the marked ground

Five days

Marking the ground-based on accurate dimensions

One day

Excavation

Two days

Compacting the ground

Two days

Putting solid bases on which footing can be placed.

Seven days

Footing replacement

Four days

Shuttering

Two days

Footing concrete

Four days

Column casting

Ten days

Constructing the base of the wall

Five days

Wall construction

20 days

Reinforcing openings using cement concrete

Ten days

Pouring the roof slab

One day

Fixing doors and windows

Three days

Fixing electrical works

Five days

Fixing plumbing work

Ten days

Tiles laying

Seven days

Painting

20 days

Terrace waterproofing

Five days

Part C: Sequence activities

The table used in part B represents the activities as they follow each other within a sequence in implementing the project. The following table describes the series.

Activity

Duration

Preparation of drawing

A

Estimation of material cost

B

Estimation of labor costs &contingencies

C

Preparation of a formal drawing of the project.

D

Approval of the drawing from the authority.

E

Marking the ground

F

Cleaning the marked ground

G

Marking the ground-based on accurate dimensions

H

Excavation

I

Compacting the ground

J

Putting solid bases on which footing can be placed.

K

Footing replacement

L

Shuttering

M

Footing concrete

N

Column casting

O

Constructing the base of the wall

P

Wall construction

Q

Reinforcing openings using cement concrete

R

Pouring the roof slab

S

Fixing doors and windows

T

Fixing electrical works

U

Fixing plumbing work

V

Tiles laying

W

Painting

X

Terrace waterproofing

Y

B

A

C

E

D

X

T

H

Y (COMPLETION)

S

O

M

L

K

N

Q

J

P

U

I

G

R

W

F

Based on the forward pass method, the project will take 105 days, while the back pass method will take 155 days.

Reference

Bagshaw, K. B. (2021). PERT and CPM in Project Management with Practical Examples. American Journal of Operations Research11(4), 215-226.