building wiring estimating & costing

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BUILDING WIRING ESTIMATING AND COSTING

Institute of Integrated Electrical Engineers of the Philippines, Inc.Council of Student Chapters (IIEE-CSC)

10th MEGA SEMINARFebruary 7, 2007 10:30am-12:00nn, University of Sto. Tomas

byFLORIGO C. VARONA, PEE

FCVARONA CONSULTANCY SERVICESVALUE-ZEN MECHANELEC CONSTRUCTION, INC.

AboutThe Speaker

VALUE-ZENMECHANELEC CONSTRUCTION, INC.

FLORIGO C. VARONAProfessional Electrical Engineer

A Management and Technical Consultant

• Conducting Technical Audit as well as providingManagement and Technical advice and solution to clients like

• PRUDENTIAL LIFE, WALTERMART, KINGS COURT, CLEAN LIVING, ASIA FUSION EQUIPMENT, & others.

A Management and Technical Lecturer of

• Project Management Series at IIEE, SPECS, UP-NEC, CMDF, and other companies in the construction industries.

• Senior Course on Building Construction Managementsponsored by Japan International Cooperation Agency (JICA) for project managers in Asia-Pacific region in six (6) consecutive years.

VALUE-ZENMECHANELEC CONSTRUCTION, INC.

FLORIGO C. VARONAProfessional Electrical Engineer

A member of TESDA-SPECS Panel of Expert who prepared the Occupational Skills Standard as well as the Competency Assessment Instrument for the Electrical Construction Sector.

A Professional Electrical Engineer since 1985backed up by 30-years combined work experience in design, construction, maintenance, and training.

VALUE-ZENMECHANELEC CONSTRUCTION, INC.

FLORIGO C. VARONAProfessional Electrical Engineer

BUILDING WIRING ESTIMATING AND COSTING

IIEE-CSC 10th MEGA SEMINAR

The objective ofBW ESTIMATING AND COSTING

After the technical session the participants should be able to:

• Know the purpose and importance of estimating & costing.

• Become aware of the factors affecting accurate estimate.

• Determine the estimating phases in a project cycle.

• Understand the steps in preparing cost estimate.

• Identify several types of estimates and their application.

Course Outline

1.0 Introduction2.0 Purpose of Estimating & Costing3.0 Importance of Detailed Costing4.0 Estimating Phases in a Project Cycle5.0 Steps in Preparing Cost Estimate6.0 Types of Estimates and Their Costing

Introduction

COST ESTIMATES

A forecast of future project costprepared to ensure success of

project undertaking - particularly financial success.

COST ESTIMATES

A basis for approving an economical and reasonable budgetneeded to complete the project

on time with required quality.[Proponents and Owners]

COST ESTIMATES

A basis for endorsing a realistic and reasonable budget acceptable to the owner without sacrificing public safetyin compliance with codes & regulations

[Designers]

COST ESTIMATES

A basis for declaring BID PRICEthat is acceptable to the client with

reasonable profit.

[Contractors]

COST ESTIMATES

A basis for requesting BUDGETnecessary to perform construction

activities in conformance with quality and delivery requirement.

[Project Engineers]

Purpose of Estimating and Costing

There are several purposes in estimating and costing

--depending on point of view of--

Proponents/OwnersDesigners

ContractorsProject Engineers

Proponents’/Owners’ Point of View

To establish a reliable and dependable Cost Estimate that will serve as a basis for awarding the

project to qualified contractor.

For proponents and owners with reliable and accurate estimate, Bid

Price is gauge how close it is to realityof completing the project on time

without sacrificing quality.

The objective of estimating is to declare the right budget for the project to be completed on time

without sacrificing quality.

A budget acceptable to contractorsthat is economical and reasonable.

Contractors’ Point of View

To establish a realistic and accurate Price with greater chance

of winning the bid and gaining reasonable profit.

Winning the project without gaining profit is a losing proposition.

On the other hand, ensuring greater profit without winning the

project is a futile exercise.

The objective of estimating is to declare the right price for each

work item.

A price acceptable to the client with reasonable profit.

Designers’ Point of View

To establish alternative budget options that is realistic and

acceptable to owners without sacrificing Public Safety.

For designers with realistic and reasonable estimate, Owner’s Budget

is gauge how close it is to reality of ensuring Public Safety and complying

Codes and Regulations.

The objective of estimating is to endorse the right budget for the project without sacrificing public

safety and code compliance.

A budget acceptable to owners that is realistic and reasonable.

Project Engineer’s Point of View

To establish alternative budget options that is realistic and

reasonable to company without sacrificing Quality and Delivery.

For engineers with realistic and accurate estimate, Company’s Budget

is gauge how close it is to reality of ensuring the project will be completed

on time without sacrificing quality.

The objective of estimating is to endorse the right budget for the project to be completed on time

with the required quality.

A budget acceptable to the companythat is realistic and reasonable.

Importance ofDetailed Costing

Importance of Detailed Costing

DURING DESIGN & PLANNING STAGEPreliminary Cost Advice and Budgetary

For owners, knowing the budgetary requirement is a must.

It is necessary for making a --GO or NO GO decision.

Importance of Detailed Costing

DURING DESIGN & PLANNING STAGE

With costing in design options,the owner is able to study not only

the quality behind…

But also the cost implicationfor such option.

Studying Possible Design Option

Importance of Detailed Costing

DURING DESIGN & PLANNING STAGE

The management can planfor cost appropriation,if cost of work is clear.

Budget approvalwould be easier --eventually.

Cost Planning

Importance of Detailed Costing

PRIOR TO CONSTRUCTION STAGE

For contractors, cost estimating is necessary in coming up with the

most reasonable price with…

greater chance of winning the bid and gaining good profit.

Basis for Pricing

Importance of Detailed Costing

DURING CONSTRUCTION STAGE

With cost details, monitoring and control is easier to implement.

Cost Performance Evaluationcan be done quickly to assess

savings or cost over run.

Basis for Project Cost Control

Importance of Detailed Costing

DURING CONSTRUCTION STAGE

Without Cost Estimates, billing would be unreliable.

Worst, it might become unrealistic that the client will seek further

justification.

Basis for Billing and Collection

Importance of Detailed Costing

DURING CONSTRUCTION STAGE

In detailed costing, work items are declared with clear and definite

costing per time interval.

Time scaled costing serves as a basis for Progress Evaluation.

Basis for Evaluating Work Progress

Importance of Detailed Costing

DURING CONSTRUCTION STAGE

Change Orders and Extra Works have to be quantified and given

costing prior to execution.

Approved Detailed Costing is necessary before working.

Basis for Variation Claims

Importance of Detailed Costing

POST CONSTRUCTION STAGE

After completing the project, final costing is done to reflect profit.

The final cost becomes part of cost information needed as reference of future project.

Basis for Performance Analysis of the Project

Estimating Phasesin a Project Cycle

Estimating Phases in a Project Cycle

BUDGETARY ESTIMATE

It serves as a basis for sizing up whether financial standing is

sufficient or not.

Most appropriate during Conceptualization Stage.

An owner’s quick estimate of Total Project Cost

Estimating Phases in a Project Cycle

PROGRAMMING ESTIMATE

It serves as a basis for cost allocation of major work items.

Most appropriate duringProject Definition Stage.

An estimate of major work item in percent weight

Estimating Phases in a Project Cycle

SCHEMATIC ESTIMATE

Estimates are more accurate when material specifications and

bill of quantities are known.

Most appropriate duringProject Planning Stage.

A designer’s estimate of major work items

Estimating Phases in a Project Cycle

PRELIMINARY ESTIMATE

An estimate that is focused on winning the bid and gaining profit.

Most appropriate duringProject Tendering Stage.

A contractor’s estimate of the project

Estimating Phases in a Project Cycle

FINAL ESTIMATE

An estimate that is focused on establishing cost control as well

as maximizing profit.

Most appropriate duringPre-planning Stage.

An optimum estimate from a bid winner

Estimating Phases in a Project Cycle

CONSTRUCTION ESTIMATE

An estimate that is focused on optimizing resources, productivity

and cost savings.

Most appropriate duringProject Execution Stage.

A construction estimate based on production plan

Steps in preparingCost Estimates

Step #1

LEARN ABOUT THE PROPOSED PROJECT

Step #1LEARN

about the proposed project.

BEGINby fully understanding the Proposed Project Package.

Apply 5W2H.

First “W”

Knowing the ownerwill give us an idea about the

Proposed Project Package.Owners have particular quality, delivery, and cost

requirement.

(Who is the owner of project?)Stands for WHO?

A brief description thatwill give us an overview about

the Proposed Project.Details can be found in

the Invitation to Bidand Scope of Work.

Second “W”Stands for WHAT?

(What the project is all about?)

Be familiar with the location of the proposed project.Is it remote? Far?

Is it Near? Accessible? Some factors have to be

considered based on project location.

Third “W”Stands for WHERE?

(Where the project is located?)

Know the deadline in order to submit the bid on-time.

Determine when to start and finish the proposed project.

Know the project schedule.When? What date? How long?

Fourth “W”

(When to submit the bid?)Stands for WHEN?

(When to start and finish the project?)

It answers the quality, delivery and cost requirement.

Unwritten most of the time.But, there is always a reason behind a project being done.Knowing this hidden

“WHY?” is a plus factor.

Fifth “W”Stands for WHY?

(Why undertake the project?)

First “H”Stands for HOW?

(How the project would be done?)Knowing “HOW” is...

...knowing the step-by-step work to be undertaken on the project.Knowing the “STEP” is...

…knowing the quality, delivery and cost component

of the WORK.

Second “H”Stands for HOW MUCH?

(How much is the cost of the project?)

Knowing how much...…is the approved budget…

... is a plus factor.DECLARED OR NOT...

…you must have an idea to make the estimate realistic.

5W2H

WHO?WHAT?

WHERE?WHEN?WHY?HOW?

HOW MUCH?

5W2H

WHO IS THE OWNER?WHAT?

WHERE?WHEN?WHY?HOW?

HOW MUCH?

5W2H

WHO IS THE OWNER?WHAT IS THE PROJECT?

WHERE?WHEN?WHY?HOW?

HOW MUCH?

5W2H

WHO IS THE OWNER?WHAT IS THE PROJECT?WHERE IT IS LOCATED?

WHEN?WHY?HOW?

HOW MUCH?

5W2H

WHO IS THE OWNER?WHAT IS THE PROJECT?WHERE IT IS LOCATED?

WHEN TO START/FINISH?WHY?HOW?

HOW MUCH?

5W2H

WHO IS THE OWNER?WHAT IS THE PROJECT?WHERE IT IS LOCATED?

WHEN TO START/FINISH?WHY DO THE PROJECT?

HOW?HOW MUCH?

5W2H

WHO IS THE OWNER?WHAT IS THE PROJECT?WHERE IT IS LOCATED?

WHEN TO START/FINISH?WHY DO THE PROJECT?

HOW IS IT UNDERTAKEN?HOW MUCH?

5W2H

WHO IS THE OWNER?WHAT IS THE PROJECT?WHERE IT IS LOCATED?

WHEN TO START/FINISH?WHY DO THE PROJECT?

HOW IS IT UNDERTAKEN?HOW MUCH IS THE COST?

Step #2

ACQUIRE PLANS, SPECS, AND PROPOSAL.

THEN CHECK & ACT

Step #2Acquire Plans, Specs & Proposal

then CHECK, and ACT

GET & CAUSIOUSLY STUDYThe Technical Drawings, Specifications, and Contract

Documents

QUALIFIED? CAPABLE?DECIDE IF OK OR NOT.

ACQUIRE AND CHECK FOR

Ensure the details are clear.Completeness of Plans.

ELECTRICAL PLAN

LIGHTING LAYOUTPOWER LAYOUT

AUXILIARY LAYOUTSCHEDULE OF LOADSONE-LINE DIAGRAM

RISER DIAGRAMSYMBOLS & LEGEND

CHECK FOR COMPLETENESS OF

ELECTRICAL PLAN

MOUNTING DETAILS

WIRING DIAGRAM

SCHEMATIC DIAGRAM

OTHER PARTS OF

The Focus of Checking the Plan is...

To make accurate & reliable estimate.Completeness & Clarity.

Part of the Electrical Plan not mentioned is...

NOTES & SPECIFICATIONOthers prepare this on separate sheet.

TECHNICAL SPECIFICATION

SCOPE OF WORK

CODES, PERMITS

GUARANTEE

MATERIALS

ACQUIRE AND STUDY PARTS OF

ELECTRICAL MATERIALS

WIRESCONDUITS

BOXES & FITTINGSLIGHTING FIXTURE

WIRING DEVICESPANELS & BREAKERSAUXILIARY DEVICES

CHECK FOR SPECIFICATION OF

TECHNICAL SPECIFICATIONS

SECTION EW – ELECTRICAL WORK

EW 101: SCOPE

The work to be done by the CONTRACTOR under this division consists of furnishing all labor and materials required completing and making ready for use the following items in accordance with the specifications and drawings.

.General Lighting System

.Stalls Individual Electrical Power System

.(MECO) Electric Meter Center

.Submeters for Tenants (temporary power provisions)

EW 102: CODES, PERMITS, CERTIFICATE OF INSPECTION AND APPROVAL:

102.1 The installation specified herein shall comply with the provision of the latest approved edition of the Philippine Electrical Code with all laws and regulations of local authorities having jurisdiction over electrical installations, and with all rules and requirements of the local power company.

102.2 The Contractor, prior to the start of the work, shall obtain at his own expense, all permits required by the government approving Authorities and, after completion of the work, shall furnish the Owner a copy of the Certificate of Final Inspection and Approval from the above authorities. The Contractor shall pay all penalties incurred by him or his agents.

EW 104: MATERIALS

All materials shall be new and shall conform to the Standard of the Underwriter’s Laboratories and shall comply with the specifications, unless specifically accepted and all materials where not specified shall be of their respective kind. Samples of any materials shall be submitted for approval as required by theProject Architect.

EW 105: WIRE

105.1 All wire shall be copper, soft-drawn and annealed, shall be of 90% conductivity, shall be smooth and true of a cylindrical form and shall be within 1% of the actual size called for.

105.2 No wire shall be smaller than 2.0 sq. mm. except for control leads, plastic insulated for 600 volts working pressure,type THW insulation and shall be as manufactured by PhelpDodge or Duraflex.

The Focus of Studying the SPECS is...QUALITY REQUIREMENT.

To make realistic and competitive cost estimate.

The other aspect of the project to be...CAUTIOUSLY STUDIED IS

THE BID PROPOSAL

THE BID PROPOSAL

Bid FormDETAILED ESTIMATE

Summary SheetCASH FLOW

Payment ScheduleSCHEDULE, S-CURVE

Construction Methods

CAREFULLY STUDY THE REQUIREMENTS OF

THE BID PROPOSALORGANIZATIONAL CHARTList of Construction PersonnelMANPOWER SCHEDULE

Equipment LoadingSITE INSPECTION

Bid SecurityCREDIT LINE

Other requirements to be studied as part of the

Safety and Health Program

THE SCOPE OF WORK

Roughing-in WorksWIRING WORKS

Wiring Device Installation WorksFIXTURE MOUNTING WORKS

Equipment Installation Works

Thoroughly study the details of

GENERAL REQUIREMENTPERMIT & LICENSES

MobilizationDEMOBILIZATION

Insurance, Coverage, BondsUTILITIES & SECURITIES

Temporary FacilitiesAS-BUILT PLANS/DRAWINGS

Cautiously study also the

Others needed prior to operation

BILL OF QUANTITIES

Unit of Measurement

Details of BOQ

Summary of BOQ

Review also the prescribed

ACQUIRING COMPLETE SET OF

PLANS, SPECS, & PROPOSALIs a must. Focusing on

CLARITY AND ACCURACYTo come up with a

COMPETITIVE & PROFITABLE ESTIMATE.

AFTER ACQUIRING & STUDYING

PLANS, SPECS, & PROPOSALThe next thing to do is to…

ACT PROMPTLY

Quickly DecidingTO PROCEED OR NOT.

Step #3

PERFORM ON-SITE VISIT AND OCULAR INSPECTION

Step #3Perform On-Site Visit and OCCULAR INSPECTION

As much as possibleVISIT THE SITEAND CONDUCT

OCCULAR INSPECTIONTo become familiar of the

locality.

ON-SITE VISITTransportation

UTILITIESLocal Government Requirement

EMERGENCY SERVICESVendors & Suppliers Capability

SECURITYLocal Climatic Condition

Focus and Become Familiar of the following during

Project Site Situation

AT THE PROJECT SITEMaterial & Equipment Handling

WAREHOUSINGFabrication Yard

BARRACKSLayout Difficulties

MOUNTING DIFFICULTIESLocation Uncertainties

Look into difficulties/uncertainties of the following

OBSTRUCTIONS

ACTUAL CONDUCT OF

ON-SITE VISITIs really very necessary to come up with more accurate, more realistic,

And above all, most reasonablebut profitable estimate.

Step #4

GATHER SUBSTANTIAL AND ACCURATE ESTIMATE DATA

Step #4Gather Substantial & Accurate

ESTIMATE DATAOBTAIN UPDATEDESTIMATE DATA.

DETERMINE 5M TO BE UTILIZED AND

ANALYZE SWOT.

ESTIMATE DATA

Latest Material PricingUPDATED PRODUCTIVITY

MEASUREMENTCurrent Project PerformanceRESOURCE UTILIZATION

SWOT Analysis

Secure substantial and accurate

THE LATEST MATERIAL PRICE

Basic Material ListingMATERIAL PRICE

DATA BANKQuotation Form

ABSTRACT OF CANVAS

Accurate Estimating Involves Acquiring

UPDATED PRODUCTIVITY MEASUREMENT

Method Study

WORK MEASUREMENTS

Productivity Index

Reliable Labor Cost Estimate is derived from

CURRENT PROJECT PERFORMANCE

Progress Report

MATERIAL COST GRAPH

Labor Cost Graph

CASH FLOW ANALYSIS

Realistic Estimating Requires Comparing with

RESOURCE UTILIZATION

Manpower Utilization

EQUIPMENT UTILIZATION

Material Utilization

Competitive Estimate is based on economical

SWOT Analysis

STRENGTH

Weakness

OPPORTUNITY

Threat

Optimized Profitability could be gained by conducting

Gathering Substantial and Accurate

ESTIMATE DATAIs really very necessary to come up with more accurate, more realistic,

And above all, most reasonablebut profitable estimate.

Step #5

PREPARE CAREFULLY AND PROMPTLY THE

COST ESTIMATE

COST ESTIMATEIdentify Sub-con Items

SECURE SUB-CON PRICESVerify Track Record/Capability

CONTACT SUPPLIERSReview Insurance, BondingREVIEW WAGE POLICY

Prepare Work Breakdown Structure

The following are steps in coming up with

DEVELOP TAKE-OFF SHEET

BREAKDOWN OF WORKRoughing-in WorksWIRING WORKS

Wiring Device InstallationFIXTURE MOUNTING WORKSEquipment Mounting & InstallationAUXILIARY WIRING WORKS

Auxiliary Device Installation

The following are suggested

TESTING & COMMISSIONING

DEVELOPING TAKE-OFF SHEET

Material Quantity Take-off

Bill of Materials with costing

Detailed Labor Costing

Detailed Bill of Quantities

Suggestion in

MATERIALS

Transport ExpenseHANDLING EXPENSE

Storage ExpenseWASTE & LOSSES

Value Added TaxMISCELLANEOUS EXPENSE

The following are cost additive of

LABORSSS

Pag-ibigMEDICARE

Cost of Living Allowance13th MONTH PAY

BonusHOLIDAY PAY

The following are cost additive for

Other Compensation

COST SUMMARYDIRECT COST

Job Overhead ExpensesGENERAL OVERHEAD

Project CostPROFIT

Total CostCONTRACTOR’S TAX

The final part of estimating is to come up with

Bid Cost

ITEM DESCRIPTION QTY. UNIT UNIT COST TOTAL COST1.0 wire # 125 mm.sq. thhn 900 mts. 278.00 250,200.00 2.0 50mm.dia.RSC 40 pcs. 450.00 18,000.00 3.0 50mm.dia.coupling 40 pcs. 75.00 3,000.00 4.0 locknut & bushing 8 pcs. 30.00 240.00 5.0 50mm.Elbow 6 pcs. 160.00 960.006.0 Pullbox.30x.30x.15mm. 2 pcs. 450.00 900.00 7.0 Entrance cap 50mm. 2 pcs. 150.00 300.00 8.0 Secondary rack 14 pcs. 150.00 2,100.00 9.0 Expansion bolt 30 pcs. 7.00 210.00

10.0 Guide wire 2 kilo 45.00 90.00 11.0 Wire connector 250mm. 4 pcs. 240.00 960.00 12.0 Rubber tape 4 roll 75.00 300.00 13.0 Electrical tape 5 roll 40.00 200.00 14.0 U- clamp 12 pcs. 15.00 180.00 15.0 U- clamp holder 12 pcs. 45.00 540.00 16.0 L- vie 50mm. 2 pcs. 250.00 500.00

A. TOTAL MATERIAL COST........................................................ 278,680.00

BILL OF MATERIALS FOR CLI MAIN FEEDER LINE

PROJECT : SUPPLY AND INSTALLATION OF CLI SERVICE ENTRANCEOWNER : CLEAN LIVING INC.LOCATION : Tunasan, MuntinlupaCONTRACTOR : VALUE-ZEN/FCVARONA CONSULTANCY SERVICES

ITEM DESCRIPTION QNTY. UNIT UNIT COST TOTAL COST1.00 One (1) unit CONCRETE PEDESTAL

dimension: 300 x 450 x 2000mmon top of CLI Perimeter wall (includesform, rebar, and concreting works)

1.10 MATERIALS1.1.1 Cement 4.00 bags 95.00 380.001.1.2 Sand 0.25 cu.m. 200.00 50.001.1.3 Gravel 0.50 cu.m. 400.00 200.001.1.4 Tie Wires 0.50 kgs. 35.00 17.501.1.5 Coco lumber 16.00 bd.ft. 7.00 112.001.1.6 Plywood 1/2" x 4' x 8' 2.00 shts. 500.00 1,000.001.1.7 Rebar #3 2.00 length 36.00 72.001.1.8 Rebar #5 4.00 lengths 95.00 380.00

Sub-total of 1.10 2,211.50

1.20 LABOR1.2.1 Labor 4.00 mday 180.00 720.001.2.2 Steel man 1.00 mday 250.00 250.00

DETAILED COST ESTIMATE

Contractor : VALUE-ZEN INC. / FCVARONA CONSULTANCY SERVICESProject : Proposed Renovation of Caltex Clubhouse (ELECTRICAL WORKS)Location : San Pascual, BatangasOwner : CALTEX (Philippines) INC.

ACTIVITIES QTY. UNIT UNITCOST TOTAL COSTA. Labor & Materials

I. Mobilization 1.0 lot 40,000.00 40,000.00II. Preparatory Works 1.0 lot 18,000.00 18,000.00III. Roughing-in works

II.1 80mm dia. RSC Pipes & Acc. 48.0 lm 1,500.00 72,000.00II.2 25mm dia. RSC Pipes & Acc. 150.0 lm 135.00 20,250.00II.3 20mm dia. RSC Pipes & Acc. 1,200.0 lm 125.00 150,000.00

IV. Wiring Works III.1 60 sq.mm. THW 100.0 mts. 275.00 27,500.00III.2 30 sq.mm. TW 100.0 mts. 135.00 13,500.00III.3 8 sq.mm. THW 300.0 mts. 36.00 10,800.00III.4 3.5 sq.mm. TW 3,600.0 mts. 9.75 35,100.00

V. Panelboards IV.1 500A DPDT Switch 1.0 set 25,000.00 25,000.00IV.2 500A MDP w/ 32 Branch 1.0 set 45,000.00 45,000.00

BILL OF QUANTITIES

PROJECT : ELECTRO-MECHANICAL WORKS FOR PRUDENTIAL BANK BUILDING PROJECTOWNER : PRUDENTIAL BANK/UNICORN CONSTRUCTIONLOCATION : Grace Park, Caloocan CityCONTRACTOR : VALUE-ZEN ELECTRO-MECHANICAL SPECIALISTS CO. / FCVARONA CONSULTANCY

ITEM DESCRIPTION QNTY. UNIT UNIT COST TOTAL COST %WT.ELECTRICAL WORKS

I. ROUGH-IN BOXES & FITTINGS

1.00 Materials1.01 40mm dia. IMC Pipe (MATSUSHITA) 38.00 lengths 723.69 27,500.13 1.121.02 80mm dia. IMC Pipe (MATSUSHITA) 9.00 lenghts 2,003.75 18,033.75 0.731.03 40mm dia. IMC Elbow 25.00 pcs. 312.50 7,812.50 0.321.04 80mm dia. IMC Elbow 4.00 pcs. 1,125.00 4,500.00 0.181.05 40mm dia. IMC Coupling 50.00 pcs. 93.75 4,687.50 0.191.06 80mm dia. IMC Coupling 15.00 pcs. 112.50 1,687.50 0.071.07 40mm IMC Locknut & Bushing 50.00 pcs. 6.44 321.88 0.011.08 80mm IMC Locknut & Bushing 15.00 pcs. 13.19 197.81 0.011.09 15mm dia. EMT Pipe (MATSUSHITA) 345.00 lengths 122.06 42,111.56 17.061.10 20mm dia. EMT Pipe (MATSUSHITA) 160.00 lenghts 185.19 29,630.00 12.011.10 25mm dia. EMT Pipe (MATSUSHITA) 20.00 lenghts 222.23 4,444.50 1.801.10 50mm dia. EMT Pipe (MATSUSHITA) 10.00 lenghts 555.56 5,555.63 2.251.11 15mm dia. EMT Elbow 345.00 pcs. 25.94 8,948.44 3.631.12 20mm dia. EMT Elbow 160.00 pcs. 37.13 5,940.00 2.411.12 25mm dia. EMT Elbow 20.00 pcs. 44.55 891.00 0.361.13 15mm dia. EMT Coupling 345.00 pcs. 7.13 2,458.13 1.001.14 20mm dia. EMT Coupling 160.00 pcs. 11.25 1,800.00 0.731.14 25mm dia. EMT Coupling 20.00 pcs. 22.50 450.00 0.181.14 50mm dia. EMT Coupling 10.00 pcs. 56.25 562.50 0.231.15 15mm EMT Connector 690.00 pcs. 6.44 4,441.88 1.80

BILL OF QUANTITIES

PROJECT : ELECTRO-MECHANICAL WORKS FOR PRUDENTIAL BANK BUILDING PROJECTOWNER : PRUDENTIAL BANK/UNICORN CONSTRUCTIONLOCATION : Grace Park, Caloocan CityCONTRACTOR : VALUE-ZEN ELECTRO-MECHANICAL SPECIALISTS CO. / FCVARONA CONSULTANCY

ITEM DESCRIPTION LABOR EQPT/MATLS PROFIT/OH TOTAL

I. Rough-in Boxes & fittings 80,445.00 300,344.56 67,198.16 447,987.723.27 12.22 2.73 18.22

II. Wires & Cables 56,250.00 239,696.25 52,225.81 348,172.062.29 9.75 2.12 14.16

III. Panelboards, Breaker 52,400.00 246,804.75 52,800.84 352,005.59Gutter & Circuit Breaker 2.13 10.04 2.15 14.32

IV. Lighting Fixtures 45,000.00 259,543.75 53,743.01 358,286.76 1.83 10.56 2.19 14.57

V. Wiring Devices 27,450.00 107,214.00 23,764.24 158,428.24 1.12 4.36 0.97 6.44

VI. Fire Alarm System 22,844.32 419,024.25 77,976.81 519,845.38 0.93 17.04 3.17 21.14

VII. Telephone System 10,850.00 32,062.50 7,572.79 50,485.29 0.44 1.30 0.31 2.05

VIII. Others (Plans, Permits, 70,000.00 120,000.00 33,529.41 223,529.41Testing & Commissioning) 2.85 4.88 1.36 9.09

T O T A L 365,239.32 1,724,690.06 368,811.07 2,458,740.45

14.85 70.15 15.00 100.00

LUMP SUM PRICE BREAKDOWN

CONTRACTOR : VALUE-ZEN EMS COMPANYPROJECT : 2 STOREY RESIDENCE WITH ATTICLOCATION : MUNTINLUPA CITY DATE : FEB. 10, 1999

BILL OF QUANTITIESITEM DESCRIPTION QNTY UNIT UNIT COST AMOUNT I GENERAL PROVISIONS PHP PHP

1.1 Mobilization/ demobilization 1.00 lot 50,000.00 50,000.001.2 Temporary Facilities 1.00 lot 50,000.00 50,000.001.3 Permits & Licenses 1.00 lot 45,000.00 45,000.001.4 Bonds & Insurance 1.00 lot 21,000.00 21,000.001.5 Power, water, illumination, Misc. 1.00 lot 40,000.00 40,000.00 Sub-total I 206,000.00

II SITE WORK2.1 Clearing & Grabbing 225.00 sq.m. 188.50 42,412.502.2 Excavation 210.00 cu.m. 325.00 68,250.002.3 Backfilling & Compaction 290.00 cu.m. 134.85 39,106.502.4 Gravel Fill & Compaction 30.00 cu.m. 735.15 22,054.502.5 Hauling & Disposal of excess soil 160.00 cu.m. 331.50 53,040.002.6 Termite Treatment 1.00 lot 75,000.00 75,000.002.7 Others. 1.00 lot 25,000.00 25,000.00 Sub-total II 324,863.50

III FORMWORKS 1,019.00 sq.m. 568.50 579,301.50 IV REBARWORKS 25,375.00 kgs. 25.50 647,062.50

Well experience Bidder could determine the

BEST BID.Having the maximum marked-up that

could be inserted in a bid.The mark-up is usually basedon mathematical computation

as well as extra-sensory calculationfocused on winning and gaining.

In conclusion

A BID WINNERCould release the right bid proposal, at the right price, at right time and place.

Just like a martial art champion releasing the right strike at the right

time at the right point.

Types of Estimatesand Their Application

Types Estimates• Ratio Estimate (±25% Accurate)

– Used in Feasibility Study. • Factored Estimate (±15% Accurate)

– Used in Early Stage Estimate.

• Office Estimate (±10% Accurate)– Used in Preliminary Budget Approval

• Definitive Estimate (±5% Accurate)– Used in Preparing Control Budget

• Final Estimate (±5% Accurate)– Used in Preparing Cost Information

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