Construction Methods
Compare and state 5 advantages and disadvantages of each of the project delivery methods described in this presentation
only pdf
*
CSMT 348
By
Swarnali Ghosh Dastider
*
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
*
*
Projects
*
*
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 projects program
Economic feasibility assessment, including the projects 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
Architects 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)
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 Methodcompetitive sealed bidding (open bidding) -qualified
DBB Methodcompetitive sealed proposal not price alone
DBB Methodinvitational 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 Contractors 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-
Owners 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,
*
