WEEK4A_INSTRUMENT AND STATIONARY .ppt

8/10/2019 WEEK4A_INSTRUMENT AND STATIONARY .ppt

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The Basics ofMeasurement

Fara Diva MustapaAssoc. Prof Dr. Rosli Abd. Rashid

Department of Quantity SurveyingFaculty of Built EnvironmentUniversiti Teknologi Malaysia


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The Fundamental of

MeasurementBefore proceedings to the next level oftaking- of work, one should know what arethe tools or the instruments needed tocarry out such process. Hence, thislecture is an introduction to the dimensionpapers, calculators, scale rules and colour

pencils before further explaining thedimensions papers.


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The instruments and

stationary used in a processof measurement


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It is a sheet of paper that consists of few

column that represent the item/element thathas been measured. Each column has its ownfunctions and share almost equal importance to aquantity surveyor. It is a standard format usedworldwide.

The next slide will show you a sample ofdimension paper.

A) Dimension papers


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Project: Bill No. Element/Trade. Page No.

Heading

Description Unit

Quantity

Taker-off

Squaring

The taking-off sheet

Dewan-Dwgs/12 WBLFF 1

Vibrated Reinforced Concrete Grade 25 as described incolumn stump

m3

0.800.430.20

----------

2

FDM

1

0.14----------

0.14


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B) Ink Pen The most basic tools of all which requires a goodattention. One should use only black or blue ink to write

down all the elements in the dimension paper. Whilst the red ink is used only to

SUBSTACTS/DEDUCTIONS of any items in thedimension papers. One should never writes in pencil as it can be

easily erased which further bring difficulty intracing down the measurement in future.

If one makes a mistakes during the taking-offprocess, simply crossed/slash the mistakes andDO NOT USE LIQUID PAPER.


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C) Scale Rules

A scale rules is used to measure thedrawings if there is no dimensionstated in the drawings. It comes in

different scales such as 1:100, 1:1,1:200, 1:20, 1:50, 1:5, 1:1250 and soon.

One should use the appropriate scaleas mentioned in the drawings.


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D) Calculator Calculator is used to either adding,

omitting, squaring, dividing and othercalculation needs

A small size of calculator with a basicfunction is very useful to carry around. P/S: A quantity surveyor is very synonym

with calculator that one shouldnt be

regard as a one if he or she does not carryone around.


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Colour pencils are very useful todifferentiate different items orelements in a drawings.

As there is so many items to bemeasured, by coloring andhighlighting, it shall ease the taking-off process

E) Colour pencils


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Introduction to

Dimension Paper As mentioned earlier, each column in thedimension paper represents certaininformation with regards to the itemmeasured and even the drawings.

Please pay good attention as the next fewslides will explains each column which

incorporates the dimension paper


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Project: Bill No. Element/Trade. Slip No.

Heading

Description Unit

Quantity

Taker-off

Squaring

Dewan-Dwgs/12 WBLFF 1

Vibrated Reinforced Concrete Grade 25 asdescribed in column stump

m3

0.800.430.20

----------

2

FDM

1

0.14----------

0.14

1 2 3 4

14

5

6

7

8

9

13

101112

Project/drawings no.1

Sequence of elements2

Elements measured3

Sequence of taking-off4

5 Description of item

6 Unit measured as per SMM 2

7 The total no. of item measured

8 The name of persons responsible for taking -off

9 The name of persons responsible for squaring

F1


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Heading

Description Unit

Quantity

Taker-off

Squaring

Dewan-Dwgs/12 WBLFF 1 1

Vibrated Reinforced Concrete Grade 25 asdescribed in column stump

m3

0.14

FDM

0.14----------

0.800.430.20

----------

101112

2

13

14

F1

10 The total of calculations

11 The process ofcalculation the

dimension attainedfrom the drawings

12 The total no. ofsame item/elementappeared in the

drawings13 Side

cast/annotations

14 Explanation onthe item/elementsmeasured. Notnecessarily filled.Should refer toSMM2 forfurtherexplanations


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Sequence of

measurement Usually a project consists of a few differentbuildings with different designs and even finishes.Hence, the measurement should be differentiatedin order to ease measurement.

For a buildings work, the measurement can bedivided into elements, item or trade.

However, measurements according to trade hasnot been practiced as it was according to SMM1which is very known for its complicatedness ofmeasuring process


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An example of measurement according toelements/work, the samples of distributionsare as follows:

Piling works Work below low floor

finish Structure Upper floor Roof Staircase External wall External doors andwindows

Internal wall andpartitions

Internal doors andwindows

Internal wall finishes Internal floor finishes Internal ceiling

finishes

External finishes Ect.


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Taking-off Lists Previously, it has been mentionedthat there are several items need to

be measured. Hence, it should benoted at the beginning of taking-offprocess. Sample of taking of listsare as next slides.


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Project: Bill No. Element/Trade. Page No.

Heading

Description Unit

Quantity

Taker-off

Squaring

Piling

Pre Cast Concrete PilesTaking off list

1. Bringing in & removing plant Item

2. Maintaining plant on site Item

3. Initial piles No.

4. Driven depth m.

5. Pile extension No.

6. Extension piles n.e. 3.00 long m

7. Extention piles exceedg. 3.00 ling m

8. Cut-off pile heads No.

9. Preliminary load tests Item

10.Subsequent load test Item


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Principals of taking-off


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How to measure A normal practice of taking-off areas follows:

- horizontal dimension as length- vertical dimension as width, height,

or depth


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How to write dimensions

in the taking-off paper.. All dimension in the drawings should

be transferred in the t/off paperand should follow the following order;

Length , width, height/depth


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3D drawings of a ground

beam

200

430

800


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How to transfer dimension into t/offpaper

800

430

Ground beam depth: 200


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Heading

Description Unit

Quantity

Taker-off

Squaring

0.14----------

0.800.430.20

----------

2

Height/depth

width

length

m3No. ofrepetition

of sameitemappearedindrawings


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And later after compilationof all taking-off, a sample

of Bills of Quantities shouldlook like the following slide


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Description Unit Qty Rates Amount No.

Excavating trench for foundationStarting from ground level, maximumdepth not exceeding 0.25m

Formwork to edge of concrete notExceeding 250mm high

Foundation in concrete Grade 20

Walll, 225mm thick in common bricksin English bond in cement and sand(1:6) mortar

Plate, 75mm x 50mm in wrot pressuretreated group B timber

m3 0.14 10.00

a.

b.

c.

d.

e.

Bench top, 225mm x 25mm in wrotpressure treated Group B timber

m 5 22.00

m3 0.14 170.00

m2 1 48.00

m 1 16.00

m2 1 24.00

Apply two coats of timber tone and onecoat of varnish m2 1 6.50

f.

g.

TO COLLECTION

1.40

110.00

23.80

48.00

16.00

24.00

6.50

BILL NO. 1 SMALL BENCH

229.70

Cost of each work item(By multiplying thequantity and the rate)

The quantity of eachwork item(Obtained from theTaking-off sheet)

The rate(Obtained fromsupplier orschedule of rates)

Total cost of the bench(By adding the cost ofall the items in the list)


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The EndThank You

WEEK4A_INSTRUMENT AND STATIONARY .ppt

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