5 advantages and disadvantages of project delivery methods
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CSMT 348
TUSKEGEE UNIVERSITY
TAYLOR SCHOOL OF ARCHITECTURE & CONSTRUCTION SCIENCE (TSACS)
By
Swarnali Ghosh Dastider
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Construction Project Delivery
Introduction
Five blind men encountering different parts of an elephant,
Construct
Plan
Operate
Finance
Design
Project Management metaphor
What is a Project?
- Is a collection of tasks that must be completed in minimum time or at minimal cost.
- temporary undertaking to create a unique product or service
- Altering something to the desired condition
- Unique, two projects are never done one exact way
- Several related activities
- Focuses on the outcome
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Projects
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The Project Life Cycle
• Predesign phase : planning or programming phase
• Design phase
• Preconstruction phase
• Construction phase
• Post-construction phase
PROJECT DELIVERY PHASES
• Predesign phase : planning or programming phase
- Details of the project’s program
- Economic feasibility assessment, including the project’s overall budget and financing.
- Site assessment and selection
- Governmental constraints assessment
- Sustainability rating (LEED)
- Design team selection
PROJECT DELIVERY PHASES
• Design phase
- Members : Architects, Engineers, consultants
PROJECT DELIVERY PHASES
Architect’s Liability for Work Done by Owner-Contracted Consultant
• Design phase
- Members : Architects, Engineers, consultants
PROJECT DELIVERY PHASES
Architect and some consultants are contracted directly by the owner.
• Design phase
- Document creation
PROJECT DELIVERY PHASES
• Design phase
- Specifications : Specifications are written technical descriptions of the design intent and the drawings provide the graphic description
PROJECT DELIVERY PHASES
CSI MASTERFORMAT AND SPECIFICATIONS
PROJECT DELIVERY PHASES
• Preconstruction phase: Relationship Between Construction Drawings and Spec
PROJECT DELIVERY PHASES
Construction Drawings
- Design intent represented graphically
- Product/material may be shown many times
- Product/material shown generically
- Quality indicated
- Location of elements established
- Size, shape, and relationship of building elements provided
Specifications
- Design intent represented with words
- Product/material described only once
- Product/material identified specifically, sometimes proprietary to a manufacturer
- Quality indicated
- Installation requirements of elements established
- Description, properties, characteristics, and finishes of building elements provided
• Preconstruction phase
- Bid, contractor selection, Legal notice etc.
- The bidding documents
PROJECT DELIVERY PHASES
• Preconstruction phase: THE SURETY BONDS
- Bid Bond
- Performance Bond
- Payment Bond
- Pros and Cons of Bonds
PROJECT DELIVERY PHASES
• Construction phase
- Members : Architects, Engineers, consultants
PROJECT DELIVERY PHASES
Preconstruction phase: selecting the general contractor and project delivery
1. Get Multiple Estimates
2. Hire Local, Licensed Contractors Whenever Possible
3. Check Their Past Work
4. Take Your Time Making a Sound Decision
5. Check Their Insurance and Bonding
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
Some of the most commonly used
• Design-bid-build (DBB) method
• Design-negotiate-build (DNB) method
• Construction manager at risk (CMAR) method
• Design-build (DB) method
• Integrated project delivery (IPD)
https://www.youtube.com/watch?v=jAz0I2BPyks
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
• Design-bid-build (DBB) method - Oldest and most familiar method of project delivery. It has stood the test of time and enjoys the largest market share.
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
• Design-bid-build (DBB)
• DBB Method—competitive sealed bidding (open bidding) -qualified
• DBB Method—competitive sealed proposal – not price alone
• DBB Method—invitational bidding (closed bidding) – Preselect
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
• Design-negotiate-build (DNB) method - Owner knows of one or more reputable, competent, and trusted GCs and negotiates with them concerning the overall contract price, time required for completion, and other important details of the project
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
• Construction manager at risk (CMAR) method
- Acts as an advisor to the client.
- reduces the risk to the Owner
- holds the subcontract agreements. Often, the Construction Manager is also the Contractor. Other advantages include:
- typically provides a Guaranteed Maximum Price (GMP)
- Owner knows the Contractor’s profit on the project and any change order
- Construction can begin without the design being fully completed
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
• Design-build (DB) method - the owner awards the contract to one firm, which designs the project and also builds it, either on a cost-plus-profit basis or on a lump-sum basis.
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
PROJECT DELIVERY PHASES
Preconstruction phase: Delivery methods.
• Integrated project delivery (IPD)
PROJECT DELIVERY PHASES
• Construction phase
- Members : Architects, Engineers, consultants
PROJECT DELIVERY PHASES
• Construction phase
Submittals and Construction progress documentation
Contract Administration
Shop Drawings
Mockups
Construction Progress Documentation
Payment Certifications
Change Orders
PROJECT DELIVERY PHASES
• Construction phase
Shop Drawings
Produced by the contractor, supplier, manufacturer, subcontractor, or fabricator
To the Architect / Engineer.
typically required for prefabricated components
When construction drawings do not describe them to a level of detail that makes their fabrication possible
PROJECT DELIVERY PHASES
• Construction phase
Shop Drawings
PROJECT DELIVERY PHASES
• Construction phase
Shop Drawings
PROJECT DELIVERY PHASES
• Construction phase
Mockups
full-size built ups of one or more critical elements
PROJECT DELIVERY PHASES
• Construction phase
- Construction phase: submittals and Construction progress documentation
- Contract Administration-
- Owner’s representative
- Making sure work is getting done according to contract, drawing and quality
PROJECT DELIVERY PHASES
• Construction phase
Construction Progress Documentation – progress documents
Safety
Schedule
Addition + new issues
Payment Certifications
Submitted by GC
To CA/ architect / engineer/ owner
Incudes substantial completio0mn of specific work
Verified and approved by CA/ architect / engineer
Once approved payment is made to the general contractor.
PROJECT DELIVERY PHASES
• Construction phase
Change Orders
Document to demonstrate and change in design/construction
Typically impact cost and schedule
Due to unclear design or spec
PROJECT DELIVERY PHASES
• Construction phase
Change Orders
PROJECT DELIVERY PHASES
• Postconstruction phase:
Project closeout
Substantial Completion
Final Completion Inspection
Record Documents
Facility management
PROJECT DELIVERY PHASES
• Postconstruction phase:
Project closeout
Substantial Completion
certificate of occupancy, the GC must submit
all required guaranties and warranties from the manufacturers of equipment and materials and the specialty subcontractors and installers used in the building
Documents shows completion of the whole project
Final Completion Inspection
Architect, engineers and consultants inspect the final product
Punch list
GC completes the punch list items
PROJECT DELIVERY PHASES
• Postconstruction phase:
Project closeout
Record Documents
A set of drawing with the changes made
A blue print of the building that is standing
Facility management
encompasses multiple disciplines to ensure efficient functionality, comfort, safety and efficiency of the built environment
PROJECT DELIVERY PHASES
Due Sep 5th @ 1.00pm, submit in BB
Compare and state 5 advantages and disadvantages of the each project delivery methods described in this presentation.
Assignment 1
Sources and references
Construction Project Scheduling and Control – Third Edition by Saleh Mubarak
Construction Project Management, people.tamu.edu › ~i-choudhury › cosc353_1
Building Construction: Principles, Materials, & Systems, 2nd Edition, Madan L Mehta, Ph.D., Walter Scarborough, Diane Armpriest,
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