Download presentation
Published byMadlyn Willis Modified over 8 years ago
1
Project Delivery And The Changing Roles Of Contractors
By Awad S. Hanna, Ph.D., P.E. Professor University of Wisconsin-Madison Department of Civil and Environmental Engineering 2320 Engineering Hall, 1415 Engineering Dr. Madison, WI, 53706 Tel (608) No part of this publication may be reproduced or transmitted in any form, or by any means, without written consent from Hanna Consulting Group Inc. Copyright
2
Changing Project Delivery
Outlines: Traditional Project Delivery (Design-Bid-Build or Single Prime) Separate Prime Contractors Single Source Delivery Design-Build Construction Management CM “Pure” and Others (Owner CM and Designer CM) Lean Construction and Integrated Project Delivery (IPD) Success Factors Ⓒ Prof Awad S. Hanna
3
Traditional Method (Design_then _Build)
Also known as design-bid-build or single Prime Contractor Has three sequential phase design - bid - construction. Architect- Engineer hired Bid/Award Design Phase Construction Phase Single Construction Contract Ⓒ Prof Awad S. Hanna Prof Awad Hanna
6
Hierarchy of Contract Document
Addenda Special Conditions General Conditions Specification Drawing
7
Definitions Project Team (General Manager, Project Manager, Superintendent, Project Engineer, Foreman, ) Bonding Liquidated Damages Master Format Workers’ compensation Insurance Builder’s risk insurance Ⓒ Prof Awad S. Hanna Prof Awad Hanna
8
Contractors Needs for Design-Bid-Build
A complete Complete set of drawings Specifications Other contract documents General conditions Special conditions Addenda Others (soil report) Ⓒ Prof Awad S. Hanna Prof Awad Hanna
9
Single Source Delivery
1. Design Build 2. Engineer/Procure/Construct (EPC) EPC model#1 ( CM agency “pure” ) EPC model#2 ( CM at Risk ) Others 3. Lean and Integrated Project Delivery Ⓒ Prof Awad S. Hanna Prof Awad Hanna
10
Fast Track or Phased Construction Method
CM and A/E or DB hired Concepts Working Drawing Design Phase Construction Phase Variable separate construction contracts Ⓒ Prof Awad S. Hanna Prof Awad Hanna
11
Level of Influence Time Project Cost Influence Ability to Influence
Ⓒ Prof Awad S. Hanna Prof Awad Hanna
13
Advantages of Design & Build
Owner only has to communicate with one entity Total project duration can be reduced because phased construction is easier to implement (Fast-tracking) Integration of construction planning and design phases Claims reduction (reduction of adversary relationships) Innovation in design and construction can be encouraged Risk assigned to party best able to manage that risk Ability to react rapidly to change in scope Ⓒ Prof Awad S. Hanna Prof Awad Hanna
14
Disadvantages of DB for Owners
Fewer checks and balances, owner must rely on integrity of the design-build firm All your eggs in one basket Acceptance of additional project risk Scope of work changes can be difficult to identify under DB/ fast track construction Ⓒ Prof Awad S. Hanna Prof Awad Hanna
15
Summary of average differences between project delivery systems (CII-133)
Ⓒ Prof Awad S. Hanna
16
Importance of Involving Specialty Contractors up front in the Project Development
Specialty works represent 60% to 70% of the project cost Specialty works control the pace of construction Integration of electrical and mechanical systems early in the design stage Specialty works are labor intensive (high risk for cost overrun) Ⓒ Prof Awad S. Hanna
21
TYPES OF CONTRACT Ⓒ Prof Awad S. Hanna
22
Types of Contract Single fixed cost or Lump-sum
Negotiated Cost-plus-a-fee contract Guaranteed maximum price Ⓒ Prof Awad S. Hanna
23
Single Fixed Cost or Lump-sum
Contractor agrees to perform the work for a predetermined price that includes profit. Same as unit price contract Ⓒ Prof Awad S. Hanna
24
Negotiated Cost-Plus-A-Fee Contract
Contractor agrees to perform the work for a fixed or variable fee to cover overhead cost and profit. Fee can be flat dollar sum or % of cost estimate. Incentive fees are now increasingly popular. Ⓒ Prof Awad S. Hanna
25
Guaranteed Maximum Price
The contractor agrees for a fixed fee and profit at a cost not to exceed pre-established max. price. Costs above the guarantee are absorbed by the contractor. Savings may be reverted to the owner or in most cases shared by the owner and the contractor. Ⓒ Prof Awad S. Hanna
26
Degree of Risk for Owner and Contractor
(No Change in Contract) (Some Changes in Contract) Lump-sum (many changes) Unit Price Agreement Guaranteed Max Cost with Sharing Clause (50/50) (25/75) Cost-Plus- Fixed-Fee Percent-Fee (or) Cost-plus guaranteed max cost Ⓒ Prof Awad S. Hanna
27
Lean Construction and Integrated Project Delivery
Outlines: Defining Lean Construction and Single Source Delivery (IPD) Driving Forces Organization Structures and Decisions Contractual Issues Tools Metrics Success Factors Ⓒ Prof Awad S. Hanna
28
Lean Production Goals Deliver the product, while…
maximizing value (give the customer what they need when they need it) and minimizing waste (eliminate anything not needed for delivering value), and pursuing perfection (never stop striving to better achieve the lean ideal)
29
What Is Lean? Definition: A systematic approach to identifying and eliminating waste (non-value-added activities) through continuous improvement by flowing the product at the pull of the customer in pursuit of perfection. Value Added: Any activity that increases the market form or function of the product or service. These are things the customer is willing to pay for. Non-Value Added: Any activity that does not add market form or function or is not necessary. (These activities should be eliminated, simplified, reduced, or integrated.)
30
Lean Project Goals Achieve the shortest possible (project) cycle time by streamlining the work flow. Achieve the highest appropriate quality the first time without defects and rework. Achieve lowest possible cost by eliminating waste in the workflow.
31
Definitions Lean Project Delivery System (LPDS): A systematic approach to produce “value”, as defined by the customer and eliminating waste (non-value-added activities) through continuous improvement by flowing the product at the pull of the customer in pursuit of perfection Integrated Project Delivery (IPD) is a project delivery approach that integrates people, systems, business structures and practices into a process that collaboratively harnesses the talents and insights of all participants to reduce waste and optimize efficiency through all phases of design, fabrication and construction.” AIA 2007
32
Definition: What the “Bible” Says:
Philosophy (Long-Term Thinking) Process (Eliminate Waste) People and Partners (Respect, Challenge and Grow Them) Problem Solving (Continuous Improvement and Learning)
33
Forces Driving Change Waste/Lack of Productivity
Technological evolution (BIM) Owner demand (Cost and Time) Sustainability (Lean and Green) Lean design and construction
34
Waste and Lack of Productivity: Current practices are not working
35
The End of Excess
36
Waste Examples 1 – Overproduction 2 – Waiting – Material waiting 3 – Unnecessary transport or conveyance - Material 5 – Excess inventory 6 – Unnecessary movement - Workers 7 – Defects / Rework – Materials may become damaged while waiting
37
Waste Example: (Hospital Project)
Surgeon with a specific need [Have complexity appear from basic three circles] Surgeon needs specific temperature control in operating room. What do you think the odds are of that request being implemented correctly? How the complex structure affects communication. A temperature control need may have been stated by a user (e.g. a surgeon) that is ultimately acted on by a sub- subcontractor. The link between need and action is tenuous at best, manifested by questions like: "Why the hell would they need that?" . It may be that we never get the controls sub and the surgeon in the same room but through collaboration, the link can be much closer (and the data more likely to arrive unadulterated) and more individuals will be aware of why. There will be more opportunities to optimize the response. The conventional contract didn't anticipate the now highly complex structures of Owners, designers and contractors This contractor must meet the need Electrical Controls
38
“Integrated Lean Delivery”
Organization Structure (The leadership Team) “Integrated Lean Delivery” Customer Providing continual assistance and support of architect’s design development process which critiques constructability and updates cost estimates to maintain budget with a true team approach A/E GC/CM Leadership Team Subs Other Partners
39
Have an Effective Core Team
Small Owner Designer Constructor and key subcontractors Authorized Speak for their respective organizations Are the “deciders” Fair Timely Consistent Thorough Open
40
Contractual Principles
Key participants bound together as equals Key participants sign one contract Shared financial risk and reward based on project outcome Liability waivers between key participants Fiscal transparency between key participants Early involvement of key participants Intensified design Jointly developed project target criteria Collaborative decision making
41
Contractual Principles
Key participants bound together as equals Key participants sign one contract Shared financial risk and reward based on project outcome Liability waivers between key participants Fiscal transparency between key participants Early involvement of key participants Intensified design Jointly developed project target criteria Collaborative decision making
42
Tools Used in Achieving IPD Value Propositions
Establishing baseline metrics Co-location of entire project team ‘Big Room’ concept Virtual Design and Construction (VDC) Leveraging the use of new technologies Continuous cost modeling Reliable promises Early Trade Involvement Packages (ETIP’s) Joining Agreements Reverse phase scheduling Use of third party consulting IPD contingencies
43
Metrics (Targets) Minimizing Waste in PM Control Systems
Target Reduction in RFI’s (2 RFI/$Million) Target Reduction in Re-submittals Target Reduction in Field Conflicts Target Reduction of Scoping Issues Target Reduction of Deficiency Issues Targeted Final Punch List Lost Time Injuries = zero Kaizen Event = once/month
44
Commit to Reliable Promising
Measure weekly hit rate of promises kept > 90% Excellent > 80% Good < 70% or Missed Major Milestones – Change Something or Someone Watch for warning phrases (what it isn’t): “I’ll do my best” “It’s on my schedule” “I told my staff”
45
Change The Risk Proposition!
Allocation vs. “aversion.” Ability to manage vs. benefit Owner Contractor Designer
46
Success Factors A knowledgeable owner
An experienced team assembled as early as possible A contract that encourages and rewards organizations for behaving as a team A Very Front End Loaded Effort This is Not Business as Usual Let the Experts be Experts Trust and Transparency are Key Metrics are Key Requires a “New Vocabulary” Owner Controlled Insurance Program (OCIP)
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.