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Session 17B: Construction & Alternate Delivery - Livestream
3:00pm - 4:30pm
3:00pm - 3:45pm ID: 286 / Session 17B: 1 Main Technical Program Topics: Construction & Alternate Delivery Keywords: Project Delivery, Construction, Risk Management
Rethinking Risk Management Approaches in Design-Bid-Build Projects
Jacobs, United States of America;
As the use of Collaborative Delivery models (e.g. CM/GC, GC/CM, Progressive Design Build) expand, Owners and Engineers are becoming exposed to the risks that Contractors regularly manage and price. These models inherently require characterization and negotiation of risk allocation, with the goal of shifting risks to the party best able to manage them. This analysis of likelihood and consequence of failure, along with an understanding of the practical cost implications associated with simply shifting risk to the Contractor, results in better informed decision-making. A similar approach can be implemented in traditional Design-Bid-Build delivery models to support better project outcomes.
This presentation will first provide an overview of the risk management process utilized in collaborative models. Then, examples of how to apply these techniques in a traditional delivery model to manage project costs and reduce potential for claims will be discussed. Specific areas of focus include:
Actively managing scope growth during design
Use of a Risk Register during design development
Minimizing unknowns through additional pre-construction investigations
Good and bad examples of allocating risk to the contractor
Effective utilization of Allowances, Contingencies, incentives, etc.
Risks that Owners should retain
Brief Biography and/or Qualifications Ms. Green has over 25 years of experience delivering a variety of water and wastewater projects. Her responsibilities have included the full range of project development—from planning and design through Construction Phase services—in all delivery formats. These have included providing project delivery analyses, leading design services for CM/GC projects, leading Fixed Price and Progressive Design-Build projects, and providing Owner’s Advisory services for both CM/GC and Progressive Design-Build projects.
3:45pm - 4:30pm ID: 186 / Session 17B: 2 Main Technical Program Topics: Collection and Conveyance Keywords: UV-CIPP, Trenchless, Rehabilitation, Sanitary sewer
Between a Lake and a Hard Place: Constructability Constraints & CIPP Lining
Murraysmith, United States of America; Brendan.O'Sullivan@murraysmith.us
The City of Fairview’s Interlachen trunk sewer, constructed in 1966, is a 12-inch-diameter concrete sanitary sewer along Fairview Lake’s northern shoreline. To extend the service life of their system, the City decided to rehabilitate approximately 12,000 linear feet of the degraded concrete trunk sewer.
The trunk sewer is located predominantly in private backyards routed through backyard easements of nearly 70 private properties along the lakeshore within an existing easement, presenting a unique set of construction challenges. Any excavation along the Fairview Lake shoreline would trigger floodplain permitting and likely an archaeological investigation, as the project area was once the site of a large Multnomah Native American village known as ničáqʷli. Since development of the land in 1911, an abundance of artifacts and burial remains associated with ničáqʷli have been uncovered.
These challenges provided the opportunity for an innovative solution. In the case of the Interlachen Trunk Sewer, constructability constraints presented the perfect opportunity to use UV-CIPP lining. The small construction footprint helped minimize impacts to residents, requiring less equipment to install the liner than steam or water cured CIPP methods.
This presentation will provide an overview of the challenges faced during the Interlachen Sewer Rehabilitation Project and the advantages of using UV-CIPP lining to minimize private property impacts.
Brief Biography and/or Qualifications Brendan O’Sullivan, P.E.
With a bachelor’s in civil engineering from the University of Portland Brendan is a principal engineer and project manager at Murraysmith for public improvement projects involving rehabilitation and new installation of municipal water and wastewater infrastructure. And was the recipient of the NASTT 2019 Trent Ralston Young Professional Achievement Award.