CONSTRUCTION METHODOLOGY OF BUILDINGS IN DUBAI

Transcription

1 CONSTRUCTION METHODOLOGY OF BUILDINGS IN DUBAI CONFERENCE HALL OF THE MANTUA INDUSTRIAL ASSOCIATION 11 MAY 2018 BY: ENG. HUSSAM A. MATALGAH 1

2 AGENDA : TIME DESCRIPTION Presentation of the Seminar Introduction Technical-Financial Audit Criteria for Environmental Sustainability Project Life Cycle & Construction Methods of Controls Break Examples of Selected Projects Debate and Conclusion 2

3 THE SEMINAR will be presented in logical and systematic flow to cover the investments in building projects from selecting the appropriate business models, feasibility, design, technical audits, permits, construction, handing over and finally operations. The sustainability implementation during each stage shall also be covered in the sustainability section. At the end there will be movies and photos to show the story of selected projects during the construction stage. This has been prepared inline with the agenda and letter of the invitation. 3

4 TECHNICAL-FINANCIAL AUDIT 4

5 AUTHORITY APPROVALS BP 5

6 6 BCC

7 CONSTRUCTION COST BREAK DOWN (HOTELS) Description of Work Weight Factor Preliminaries ( logistics, site setup,..etc) 2.50% Engineering 15.00% Procurement 7.50% Construction 72.50% Handing Over, Testing & Commissioning 2.50% Total Project % 7

8 CONSTRUCTION COST BREAK DOWN Sr. No. Description of Work Sub-Division Weight Factor Sub Factor 1 Preliminaries 2.50% % 2 Engineering 15.00% % 3 Procurement 7.50% % 4 Construction 72.50% % 4.1 Earthworks 0.25% 4.2 Piling Works 5.00% 4.3 Concrete Works (Structure) 12.50% 4.4 Masonry (Structure) 2.50% 4.5 Waterproofing 2.50% 4.6 Structural Steel 0.50% 4.7 Metalworks & Aluminum Works 2.50% 4.8 Curtain Wall 3.50% 4.9 Doors & Windows 3.50% 4.10 Joinery 4.50% 4.11 Finishes 15.00% 4.12 Specialties & Special Construction 0.25% 4.13 Mechanical Works 10.00% 4.14 Electrical Works 10.00% 4.15 Plumbimg Works 7.00% 4.16 Lifts 0.50% 4.17 Furnishings 10.00% 4.18 Landscaping 5.00% 4.19 Swimming Pools 5.00% 5 Handing Over, Testing & Commissioning 2.50% % Total Project % % 8

9 OVER ALL PROJECT WEIGHT RATIO ( HOTELS) Handing Over, Testing & Commissioning, 2.50% Preliminaries, 2.50% Engineering, 15.00% Procurement, 7.50% Construction, 72.50% 9

10 CONSTRUCTION PHASE WEIGHT RATION Swimming Pools, 5.00% Landscaping, 5.00% Earthworks, 0.25% Piling Works, 5.00% Concrete Works (Structure), 12.50% Furnishings, 10.00% Masonry (Structure), 2.50% Lifts, 0.50% Plumbimg Works, 7.00% Electrical Works, 10.00% Waterproofing, 2.50% Structural Steel, 0.50% Metalworks & Aluminium Works, 2.50% Curtain Wall, 3.50% Doors & Windows, 3.50% Mechanical Works, 10.00% Joinery, 4.50% Specialities & Special Construction, 0.25% Finishes, 15.00% 10

11 Methods of Cost Estimate ( ref(pmbok ) Description of Work Risk ( %) Rough Order of Magnitude -50% to +50% Preliminary estimate -15% to + 50% Budget estimate -10% to +25% Definitive estimate -5% to +10% Final estimate 0% 11

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13 CRITERIA FOR ENVIRONMENTAL SUSTAINABILITY 13

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28 DESIGN - CONSTRUCTION - END OF WORKS 28

29 PROJECT LIFE CYCLE Engineering Data Base PROJECT DEVELOPMENT BUSINESS DESIGN CONSTRUCTION MAINTENANCE Construct proposal Needs Analyses Business Plan Business Feasibility -& Budget Schematic Design Development Design CAD Detail Design Concept Design Construct proposal Preparation Construction TenderBid Revit BIM CAM CAE Management Data Base 29 Completed Operation Management Maintenance Hand Over Flow of information

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31 THE MAF WAY? Business Model Business Development Units, Legal, Delivery units CEO/ Board / BAR CAM : Gate Ways, Oracle, Share point, Communication protocols, Consents & Validations Project Procured & Delivery by PMBU Safety, Time, Green and within Budget Asset and Operation Units (Mall Operators, Hotel Operators, Real Estate Managements (CRT) BAR / initiations Processes Delivery Vision/Market Demand Ambiguity? need to Simplify Challenges: Is it fit for purpose, where are we? What do we want? And where to raise the bar. CEO s Visions. Obtain Consent, validate, seek periodical feedbacks, early warnings, risks, qualified team work, must share challenges and knowledge, read mind and comply with visions. And finally, is it a turnkey service? 31 Practical Handing over Team work spirit, challenge for Good, avoid positioning, meet expectations, Sustainable Operation and preventive maintenance by INOVA Final handing over Fit for purpose, lessons learnt, improve ahead. Meet Operator s expectations and record concerns.

32 CONSTRUCTION REPORTING Construction is a risky business for all the team players. Reporting is the GPS for the unknown paths of the construction projects. (human interpretation, room for assumptions) Project Navigation Pattern Decision makers: Owners, investors, insurances, designers, technical, cost engineers, managers REVIEW OF PROJECT REPORTING 32

33 UNIQUE NATURE OF CONSTRUCTION PROJECTS Construction Engineerin g Procuremen t REVIEW OF PROJECT REPORTING 33

34 PROJECT LIFE CYCLE Tender Triggers Reporting Project Phases ( After Bid) Interdependent three main phases for reporting should be equally observed 10% 50% 40% Engineering (approx. 10 % of the project price) Procurement (approx. 40 % of the project price) Construction / Installation / Commissioning (approx. 50 % of the project price) REVIEW OF PROJECT REPORTING 34

35 PROJECT LIFE CYCLE Engineering Required drawings-specifications to proceed with procurement and construction Usually, good for Tenders, not good for Construction REVIEW OF PROJECT REPORTING 35

36 PROJECT LIFE CYCLE Procurement Missing required Drawing = drive risky indicators REVIEW OF PROJECT REPORTING 36

37 PROJECT LIFE CYCLE Construction Weak Engineering Weak Construction Weak Procurement Weak = Stop or re-do = Risk REVIEW OF PROJECT REPORTING 37

38 WEIGHTING METHODOLOGY Applications Engineering: Example of coordinated drawings needs to be superimposed to eliminate conflicts between disciplines and allow them to be executable. Status Percentage Not started 0% Initiated 15% Prepared for construction 40% Checked/approved 65% Released for execution 100% REVIEW OF PROJECT REPORTING 38

39 WEIGHTING METHODOLOGY Applications Procurements: This method would be very effective for long lead items where delivery is critical. Status Percentage Not started 0% Request for Quotation 10% Purchase order issue 25% Sent by Suppliers 95% On site arrival 100% REVIEW OF PROJECT REPORTING 39

40 WEIGHTING METHODOLOGY Cost Weighted Main Activities Activities Weight % Progress Weighted % Progress General Requirements Case Study for Multistory Engineering Procurement Construction Assumed Planned Progress Planned Planned Actual Actual Planned Planned Actual % Actual Planned % Planned Actual Actual % Weight % Weight % Weight Weight Weight % Weight weight Site Work Concrete Work Internal Partitions Metal Work Wood Work Thermal & Moisture Protection Door s and Windows Hardware Sets Finishes Accessories Equipment Special Construction Conveying System Mechanical Engineering Installation Electrical Engineering Installation External Works Adjustment Bill Provisional Sum Total REVIEW OF PROJECT REPORTING 40

41 WEIGHTING METHODOLOGY Present Outputs Effort Weighted Main Activities REVIEW OF PROJECT REPORTING 41

42 WEIGHTING METHODOLOGY Present Outputs With this method, this curve can reflect, cost and scheduling performing, in two separate curves Effort Weighted Main Activities 42

43 CONCLUSION Quality of the works done is not addressed in many of the reporting methods. Most of the reporting method provides monetary information only. It is important to have a comprehensive approach when reporting, keeping all the phases into consideration. Weighting analysis technique can be a good source for problem diagnosis phased during construction and for tracking data for claims. Proper reporting leads to precise control and economics results. REVIEW OF PROJECT REPORTING 43

44 BREAK 44

45 EXAMPLES OF SELECTED PROJECTS 1. Tilal Liwa : Desert Hotel 2. Al Raha Beach Hotel 3. Pullman DCC Hotel Refurbishment 4. Al Zahia Community Phase 2 & 3 45

46 UESTIONS!!!! THANK YOU! 46