1

“Methods of “Methods of

Measurement”Measurement”

byby

Prof. Indrawansa Samaratunga Prof. Indrawansa Samaratunga PhD, DSc,PhD, DSc,

FRICS, FAIQS, FIQS(SL), FCIArb, FCIOB, FCMI, FIAS, FBEng,FRICS, FAIQS, FIQS(SL), FCIArb, FCIOB, FCMI, FIAS, FBEng,(Arbitrator & Expert registered with Dubai International(Arbitrator & Expert registered with Dubai International

Arbitration Centre/Chartered QS/Chartered Manager/Chartered Builder)Arbitration Centre/Chartered QS/Chartered Manager/Chartered Builder)

Australian Institute of Quantity Surveyors Australian Institute of Quantity Surveyors –– Middle East Representatives Middle East Representatives

CONTROL

FORECAST

Time Clause 14 Programme

Specifications/Drawings/Standards

Priced Bill of Quantities

Quality

Cost

Standard Methods of Measurement

SMM7 Standard Method of

Measurement of Building Works : Seventh Edition. (NFBTE/RICS)

Principles of Measurement

(International) for Works of Construction. (RICS)

Civil Engineering Standard

Method of Measurement 3rd Edition. (ICE)

POM(I)

CESMM3

2

Objects of the

2.4 The objects of the Bill of

Quantities are :

(a) to provide such information

of the quantities of

work as to enable

tenders to be prepared

efficiently and accurately.

(b) when a contract has been

entered into, to provide

for use of the priced Bill

of Quantities in the

valuation of work

executed.

- CESMM3

Bill of QuantitiesMethod of

MeasurementThe object of a good method of

measurement is to set forth the

procedure/rules according to which,

the Bill of Quantities should :

(a) describe as accurate (but as

simple and brief) as

possible, the work to be

priced.

(b) distinguish between items of work

of different nature, and

between work of same nature

but having different cost

considerations.

(c) allow for separating any costs

not proportional to quantities.

Unit Rate AmountQuantityItem Description

Supply, deliver, cut, bend and fix in position, 20 mm diameter plain round mild steel bar reinforcement complying with BS 4449,

Reinforcement; plain round steel bars to BS 4449; nominal size 20mm.

including supports and cleaning where necessary.

20 mm diameter plain round mild steel bar reinforcement complying with BS 4449,

0.40 m

0.40 m

0.20 m

0.80 m

Concrete 0.4 x 0.4 x 1.0 = 0.16 m3 Concrete 0.2 x 0.8 x 1.0 = 0.16 m3

Formwork (0.4 + 0.4 + 0.4)x1.0= 1.20 m2 Formwork (0.8 + 0.2 + 0.8)x1.0 = 1.80 m2

BOQ Compilation

Taking-off Measuring quantities from Drawings/Schedules/Models/Surveys and writing abbreviated descriptions

Arranging quantities trade by trade

Preamble, bill arrangement, headings/sub-headings/common descriptions etc.

Working-up (Abstracting)

Bill writing

Studying documents (including MM), site visits, discussions with design team, queries/clarifications, planning

Preparation

Double check major quantities.Checking

All worked documents/assumptions.Archive

Unit Rate AmountQuantityItem Description

Reinforcement; plain round steel bars to BS 4449;

A

B

C

kg

Kg

T/t 1.243

nominal size;

20 mm.

12 mm.

6 mm.

B20 Paving and surfacing

B20.1 Paving and surfacing shall be measured

by area.

B20.2 Expansion joints and water stops shall be

measured by length.

B20.3 Channels, curbs, edgings or the like shall

be measured by length; curved work

shall be so described.

- POM(I)