Date post: | 11-Apr-2015 |
Category: |
Documents |
Upload: | api-3836341 |
View: | 8,108 times |
Download: | 18 times |
Please wait...
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
Thank you!