cesmm

SEMINAR on

Standardising and Enhancing Bills of Quantities

forCivil Engineering Works

usingMalaysian Standard Method of

Measurement (CESMM)

31st MARCH 2010

EQUATORIAL BANGI

KAMALALDIN ABD. LATIF

JKR. MALAYSIA

CONTENT

• OVERVIEW

• CLASS E – EARTHWORK

• CLASS P – ENVIRONMENTAL PROTECTION

• CLASS G – ROADWORKS

O1- CLIENT – CONSULTANT - CONTRACTOR

OVERVIEW – CESMM_________________________________________________________________________________________________

CLIENT

CONTRACTORCONSULTANT

Idea, concept

Functional, size, material

Estimated cost (range)

Time

confirmation

- conceptual design

- detailed design

- Specification (work & material)

- Bill of Quantities

- Estimated Cost

COST & TIME

O2 - PRINCIPLE OF BILL of QUANTITIES

OVERVIEW – CESMM_________________________________________________________________________________________________

ENGINEER(DESIGNER)

CONTRACTORWORK

What ? - Item Ref. / Description

Quantity ?

Coverage Rules ?

Size (dimension) ?

Where ?

When/Duration/Interval ?

Material Specification ?

Additional Descripion Rule

O3 - PRINCIPLE OF BILL of QUANTITIES

OVERVIEW – CESMM_________________________________________________________________________________________________

WHAT? - Q 3

- Carry out routine maintenance

WHERE? - on existing road

SIZE / DIMENSION - within the limit of work

DURATION - for the duration of the contract period

O4 – BILL of QUANTITIES

OVERVIEW – CESMM_________________________________________________________________________________________________

Item Description- Describes briefly the work to be executed by the Contractor(the details of work will be described in the Tender Drawing and coverage rule in the Preamble to BQ and the MoM)

e.g: ‘Excavate unsuitable material below embankment or belowFormation in cuttings as shown in the drawing or as perspecification to disposal areas within the R.O.W asapproved by the S.O.’

Quantities- BQ quantity as a basis for estimating the rate - Final quantity to be remeasured

O5 – PREAMBLE to BQ

OVERVIEW – CESMM_________________________________________________________________________________________________

- Describes briefly the work to be executed by the Contractor(the details of work will be described in the Tender Drawing and items coverage in the Pramble to BQ and the MoM)

e.g: ‘Excavate unsuitable material below embankment or belowFormation in cuttings as shown in the drawing or as perspecification to disposal areas within the R.O.W asapproved by the S.O.’

Quantities- BQ quantity as a basis for estimating the rate - Final quantity to be remeasured

O6 – ITEM DESCRIPTION

OVERVIEW – CESMM_________________________________________________________________________________________________

- Describes briefly the WORK component (not the TASK i.e. howthe Work should be done) to be executed by the Contractor

- (the details of work will be described in the TenderDrawing and coverage rule in the Preamble to BQ and the MoM)

e.g: - ‘Excavate unsuitable material below embankment orbelow Formation in cuttings as shown in the drawing or as per specification to disposal areas outside the R.O.W asapproved by the S.O.’

- ‘Mild steel bar of nominal diameter 20mm’

not as: ‘Supply, deliver, cut, bent and fix mild steel bar of diameter 20mm’

O7 – MEASUREMENT RULE

OVERVIEW – CESMM_________________________________________________________________________________________________

Sets out the CONDITION under which the Work will be measured

and

the METHOD by which the Quantities shall be computed in accordance with paragraph 5.17

Section 5: Preparation of the Bill of Quantities5.17 : ‘All measurement shall be taken nett otherwise stated in the

measurement rules of the CESMM. No allowance shall bemade for bulking, shrinkages or wastages. Quantities can be rounded where appropriate but common sense must be applied. The total quantity and the effect on its rounding offmust be considered. Where unavoidable, fractional quantities should be given to one decimal place only’.

O8 – SPECIFICATION

OVERVIEW – CESMM_________________________________________________________________________________________________

Gives the requirement of the workwrt material use & method statement

“Unsuitable material shall be excavated to such depth and over sucharea as directed by the S.O”

O9 – CONSTRUCTION DRAWING

OVERVIEW – CESMM_________________________________________________________________________________________________

indicates shapes & dimension- length- breadth- depth

as a basis for the Tenderer to calculate the ratesfor construction

the final dimension will be determined base on actual requirement on site

CLASS E - EARTHWORK

Class E – Earthwork __________________________________________________________________________________

CESMM (UK) - excavation in stageseg. ‘excavate from 0m to 1.5m depth

from 1.5m to 3.0m depth a.s.o

CESMM (M) - let the Contractor choose the appropriate method of construction

- difficulties encountered and loss of productivityassociated with increasing depth of excavation to be reflect in the builtup rate

- measured ‘whole’- item description or drawing should indicate the depth of excavation to facilitate computation of rateby the contractor

CLASS E - EARTHWORK


Rule M1

In accordance with Paragraph 5.17, the quantities of earthwork shall be computed nett using dimension from the Drawings with no allowancefor bulking, shrinkages or wastages.

Where boundaries between different materials are not shown in theDrawings, measurement shall be made on Site.

CLASS E - EARTHWORK


IMPORTED FILL

Importing fill materials occur, when

CUT (effective) – FILL = -ve

DIPOSAL OF EXCAVATED EARTH

Disposing of excavated materials occur, when

CUT (effective) – FILL = +ve

RULE 1

CUT < FILL

4.04.0

2.0

4 units – 6 units = 2 units imported

Cut

Fill

Import

2.0

RULE 1

CUT > FILL

4.06.0

2.0

6 units – 4 units = 2 units disposed

Cut

Fill

Dispose

RULE 1

Filling – Shrinkage Factor

1.2

4.86.0

1.5

Balance Cut & Fill SituationTo Fill 6 units – require 7.5 units

Cut - 6.0 units (4.8 units)Imported - 1.5 units (1.2 units)

RULE 1

Imported Volume – covered in Filling rate

1.2

4.86.0

1.5

Computation of Filling Rate6.0 m3 @ RM5.00 – RM30.00 1.5 m3 @ RM10.00 – RM15.00

Fill = RM45.00/6 m3 = RM7.50/m3

CLASS E - EARTHWORK

BACK ISSUES:

Defination for ROCKJKR/SPJ/1988Specification for Roadworks published by Jabatan Kerja Raya, Malaysia

“Rock shall mean material found in ledges or masses in its original position which would normally have to be loosened either by blasting or pneumatic tools or, if excavated by hand, by wedges and sledge hammers. “

“ It shall NOT include material which can be loosened with a track-type tractor with mounted and drawn ripper of the following description:

Class E – Earthwork (CESMM)__________________________________________________________________________

DOZER & RIPPER UNIT

Tractor Unit:Equiptment with a minimum weight of 20 tonnes and nett horse power rating of 200 brake horse power or more. The tractor unit is to be in good condition and operated by experienced personnel skilled in the use of ripping equipment

Ripping Unit:The ripper to be attached to the tractor shall be the most efficient parallelogram type recommended by the tractor or ripper manufacturer. The ripper shall have single shank in good working condition with sharpened cutting point.


ROCK CLASSIFICATION

Class E – Earthwork (CESMM)____________________________________________________________________________

ROCK (Grade I & II)

EARTH (Grade V & VI)

ROCK (Grade III & IV)

Fresh, monolithic, no fractures or cracks

Cracks and fissures, partially weathered

Totally weathered

THE PROBLEM


ROCK (Grade I & II)

EARTH (Grade V & VI)

SEDIMENTARY– HARD MATERIAL

THE PROBLEM

On Site:In between the two extreme material on site (earth and rock) we have “ HARD MATERIAL”

which is not been clearly defined not included in the scope of specification which the Contractor has to excavate but not

priced accordingly the current practice, it is usually been paid

under normal excavation i.e. excavation in earth


Resulting in:

Claim by the Contractor due to low productivity for excavation in natural hard material (get paid for earth excavation instead of excavation in rock)

THE SOLUTION

REDEFINE “ROCK”

ROCK or ARTIFICIAL HARD MATERIAL shall be material that requires the use of either hydraulic rock breaker, pneumatic tools or explosives. …..(CESMM)

DEFINE “ NATURAL HARD MATERIAL”

NATURAL HARD MATERIAL shall be material other than ROCK and ARTIFICIAL HARD MATERIAL that requires ripping and other specialised equipment. ….(CESMM)


“The Contractor gets paid For what he Did”

POINT TO TAKE NOTE

JKR TECHNIAL DIRECTIVE (ARAHAN TEKNIK) has redefine the term COMMON EXCAVATION, HARD MATERIAL and ROCK EXCAVATION (Draft)

COMMON EXCAVATION Common Excavation shall mean excavation in any

material either than hard material/rock excavation

HARD MATERIAL/ROCK EXCAVATION Hard material/rock excavation shall mean excavation

in any material that cannot be loosened by an excavator with a minimum mass of 44 tons and a minimum rating of 321 BHP. The excavator shall be in good condition and operated by an experience personnel skilled in the use of excavator equipment.


POINT TO TAKE NOTE…….cont.

HARD MATERIAL/ROCK EXCAVATION shall required one or a combination of the following

methods:

Excavation using track excavator exceeding a mass of 44 tones and 321 BHP rating

Ripping using a tractor unit of minimum weight of 37 tones and 305 BHP rating and a ripper attached

Excavation using pneumatic tools Open blasting Controlled blasting


- Hard Material & Rock will have a common rate -

COMPROMISE

ADDITIONAL DESCRIPTION RULE

Item description for EXCAVATION IN NATURAL HARD MATERIAL and ROCK shall state the method of excavation where appropriate …… A4

This clause will cater for Designer’s requirement to dictate the method of construction where specific need prevails


CLASS P – ENVIRONMENTAL PROTECTION AND ENHANCEMENT

Is of great concern lately in road projects, especially those road alignments traversing through environmentally sensitive areas

Quality & adequacy the mitigating measures varies from project to project depending on amount allocated for Environmental and Enhancement method of construction adhererance to the specification by the

contractor during construction concise statement of Owner’s requirement in

the Bill

Class P – Environmental Protection & Enhancement (CESMM)____________________________________________________

Class P – Environmental Protection & Enhancement (CESMM)______________________________________________________________

EIA REPORT

(MITIGATION MEASURES)

DRAWING & SPECS & BILL of QUANTITIES

DESIGNER

CONTRACTOR

ENVIROMENTAL MANAGEMENT

PLAN

HOW?

WHO?

WHAT?

WHEN?

OLD PRACTICE

itemised under Preliminaries description of Bill too general, up to the Contractor’s imagination in determining

the coverage required for the Environmental Protection & Enhancement

no indication as to what the work items included under this Class

allocated sum is Lump Sum (no detailed breakdown of work given)

e.g. ‘To carry out environmental protection works according to the existing laws and regulations’


CURRENT PRACTICE

separate Bill for Environmental Protection & Enhancement

work items to be indicated

item description has to be clear and concise

allocated as Provisional Sum or can be subjected to re-measurement of quantities at the end of contract


ITEMS COVERAGE

7 items coverage:

Appointment of Environmental Officer Preparation of Environmental Management Plan

(EMP) Pollution Control Measures Preservation of Flora Preservation of Fauna Environmental Monitoring Programme Environmental Audit


SAMPLE BQ

- CLASS P -

ENVIRONMENTAL PROTECTION AND

ENHANCEMENT

Code DESCRIPTION Unit Qty. Rate Amt.

P1 0 0

P 2 0 0

P 3 0 0P 3 1 1

P 3 1 2

P 3 1 3

P 3 1 4

CLASS P: ENVIRONMENTAL PROTECTION AND ENHANCEMENT

APPOINTMENT OF ENVIRONMENTAL OFFICERAppoint an Environmental Officer for the duration of the contract period.

PREPERATION OF ENVIRONMENTAL MANAGEMENT PLAN (EMP)To prepare the Environmental Management Plan (EMP) according to the guideline produced by the Department of Environment (DOE).

POLLUTION CONTROL MEASURESWater Quality Control, Silt FenceSupply and install 1.0m height silt fence including non-woven geo-textile and wooden post with dimension as shown in the drawing or as directed by the S.O.

Gabion WallTo construct gabion earth retaining wall of dimension as shown in the drawing using block stones of size 150mm

Sediment BasinTo construct sediment basin of the dimension:7m x 4m x 2m15m x 4m x 2m

Silt TrapTo construct Silt Trap of the following dimensions:2m x 3m4m x 6m

manmonth

sum

m2

m3

nrnr

nrnr


P 3 2 1

P 3 2 2

P 3 2 3

P 3 3 1

P 3 4 0

Air Quality Control,Tyre Washing FacilitiesSupply portable water jet including operators, water tank and other necessary equipment needed to carry out the cleaning tyres of vehicles at the exits of the worksite

Water Browser TruckSupply Browser Truck to carryout water spraying 3 times a day along existing road and near settlement as directed by S.O

Lorry Wash TroughTo construct Lorry Wash Trough of dimension: 2m x 5m x 250mm deep

Noise Control, Noise BarrierSupply and install 1.0m height concrete reflective type noise barrier with dimension as shown in the drawing or as directed by the S.O

Vibration ControlTo carryout vibration control at the following locations:a. Hospital Besar Kuala Terengganu

nr

nr

nr

m2

sum


P 4 1 1

P 4 1 2

P 4 1 3

CONSERVATION / PRESERVATIONPreservation of Flora,Floral Survey ReportConduct Flora Survey and prepare 30 copies of Floral Survey Report according to the format as set in Appendix

Floral Conservation PlanPrepare Floral Conservation Plan according to the format as set in the Appendix

Relocation of Treesa) To relocate the following flora species to the approved location within the construction site:1. Tongkat Awang2. Tualang Salak

b) To relocate the following flora species to the Arboretum at Pusat Penyelidekan Tumbuhan Hutan di Kuala Berang, Terengganu1. Kemuning Minyak2. Kemuning Kuning

sum

sum

nrnr

nrnr


P 4 2P 4 2 1

P 4 2 2

P 4 2 3

Preservation of FaunaFauna Survey ReportConduct Fauna Survey and prepare 30 copies of Fauna Survey Reportaccording the format as set in Appendix

Relocation of FaunaTo relocate the following fauna species to Taman Negara Belum, Ulu Perak, Darul Redzuan:1. Gajah2. Harimau

Conservation of Archeological / Heritage

sum

nrnr

cesmm

Documents

artificial

natural hard

environmental

environmental

excavate unsuitable

environmental

hard material

item description