Prof Awad S. Hanna

Prof Awad S. Hanna

A hierarchical system which sub-

divides larger elements of the

project into smaller elements.

The smallest unit of the WBS is the

work package.

Prof Awad S. Hanna

Level

Level Description

1

Total Project2

Subproject3

Category of Work

4Work

Package

5

Resources

Work Breakdown Structure

MasonryWall

FloorSlab

FootingSiteworkInteriorFinishes

RoofSystem

SteelColumns& Joints

PlaceFootings

Form &ReinforceFootings

ExcavateFootings

EquipmentMaterialLabor

MasonryWall

Mobilization/DemobilizationAdministration

RoofSystem

SteelColumns& Joints

Warehouse

Prof Awad S. Hanna

The scope of work in each work package

should be defined to avoid overlaps and

omissions between work packages.

Work packages should be defined in terms of

design, construction methods, and completion

requirements, with associated performance

dates

Prof Awad S. Hanna

Each work packages should be:

1. ManageableSpecific authority and responsibility can be

assigned.

2. IndependentWith minimum interfacing or dependence

on other elements.

3. MeasurableIn terms of progress.

Prof Awad S. Hanna

Objectives of Establishing Project Cost

System.

1. Keep the construction costs of the

project within the established budget.

2. Develop labor and equipment

productivity information for estimating

the cost of future work.

Prof Awad S. Hanna

9708B 05 03157.20 3

ProjectNumber

AreaCode

Work Type Code

DistributionCode

Cost Code for stripping concrete formwork for bridge deck (Labor).

Prof Awad S. Hanna

Eighth project in 1997 (Bridge)

9708B 05 03157.20 3

Prof Awad S. Hanna

Geographic location

OR

Associate Field Cost to Specific supervisor or Management

9708B 05 03157.20 3

Prof Awad S. Hanna

03 Concrete

0315 Concrete Formwork

03157 Wood Concrete Formwork

03157.20 Wood Concrete Formwork for

Deck

03157.30 Wood Concrete Formwork for

Abutment

9708B 05 03157.20 3

Prof Awad S. Hanna

9708B 05 03157.20 3 1. Total

2. Material

3. Labor

4. Equipment

5. Sub-Contract

Prof Awad S. Hanna

All items of expense are charged to the

project where they are incurred.

"General" or "miscellaneous" cost

accounts should not be used, is poor

practice, and should be avoided.

The cost code is to serve its basic

purpose, it must be understood and used

consistently by all company personnel.

Prof Awad S. Hanna

Cost report intervals are a function of

the project size, nature of the work, and

the type of contract involved.

There must be a balance between the

cost of generating the reports and the

value of the management information

received

Prof Awad S. Hanna

The most widely used cost codes are

Masterformat, CSI (Construction Specifications

Institute)

Uniformat, UCI (Uniform Construction Index).

Masterformat is widely used software

companies and government agencies.

Prof Awad S. Hanna

Most contractors match their cost

control system to their payroll

periods and to their time-

monitoring system.

Prof Awad S. Hanna

MasterformatHas 16 divisionsDivisions were developed according to

trades

UniformatHas 12 divisionsTends to follow the progress of

construction

Prof Awad S. Hanna

Leve

l 2

01 G

ener

al R

equi

rem

ents

02

Sub

stru

ctur

e

03

Sup

erst

ruct

ure

04

Ext.

Clo

sure

05

Roofi

ng

06

Int.

Clo

sure

07

Conv

eyin

g S

ys.

08

Mec

hani

cal

09

Elec

tric

al

10 G

en. C

ond.

OH

& P

11 Eq

uipm

ent

12 S

ite W

ork

Leve

l 3

011

Sta

ndar

d Fo

unda

tions

012

Spe

c. F

ound

atio

n Co

nd.

021

Sla

b on

Gra

de

022

Bas

emen

t Ex

cava

tion

023

Bas

emen

t W

all

031

Flo

or C

onst

ruct

ion

032

Roo

f Con

stru

ctio

n

033

Sta

ir Co

nstr

uctio

n

041

Ext

erio

r Wal

ls

042

Ext

. Doo

rs &

Win

dows

06

1 Par

titio

ns

06

2 In

terio

r Fin

ishe

s

06

3 S

peci

altie

s

08

1 Plu

mbi

ng

08

2 H

.V.A

.C.

08

3 Fi

re P

rote

ctio

n

08

4 S

pec.

Mec

hani

cal S

yst.

091

Ser

vices

& D

istr

ibut

ion

092

Lig

htin

g &

Powe

r

093

Spe

c. E

lect

rical

Sys

t.

111 fi

xed

& M

ovab

le E

quip

.

112 F

urni

shin

gs

113 S

peci

al c

onst

ruct

ion

121 S

ite P

repa

ratio

n

122

Site

Impr

ovem

ents

123

Site

Util

ities

124

Off-S

ite W

ork

01 General Requirments

02 Site work

03 Concrete

04 Masonry

05 Metals

06 Wood & Plastic

07 Therm. & Moisture Protect.

08 Doors & Windows

09 Finishes

10 Specialities

11 Equipment

12 Furnishings

13 Special Construction

14 Conveying Systems

15 Mechanical16 Electrical

Des

ign

Uni

form

at

Prof Awad S. Hanna

Total Building Costs0100 Foundation (level A) 0620 Interior Finishes 0920 Lighting-Power0110 Standard (level B) 0630 Specilties 0930 Special Electrical Systems0120 Special (level B) 0700 Conveying Systems 0940 Communications Systems0200 Substructure 0710 Elevators 0950 Electrical Heating System0210 Slab on Grade 0720 Moving Stairs/Walks 1000 General Conditions0230 Basement Walls 0730 Dumwaiters 1100 Equipment0300 Superstructure 0740 Pneumatic Yubes 1110 Special Equipment0310 Floor Construction 0750 Other Conveying Systems 1120 Furnishings0320 Roof Construction 0800 Mechanical 1130 Special Construction0330 Stair Construction 0810 Plumbing0400 Exterior Closure 0820 HVAC0410 Exterior Walls 0830 Fire Protection0420 Exterior Doors and Windows 0840 Medical Gases 1200 Site Work0500 Roofing 0850 Sewage Treatment 1210 Site Preparation0600 Interior Construction 0900 Electrical Systems 1220 Site Improvement0610 Partitions 0910 Basic Materials 1230 Site Utilities

Total Base Construction Cost