Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
Session 17B: Construction & Alternate Delivery - Livestream
3:00pm - 4:30pm
3:00pm - 3:45pm
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
3:45pm - 4:30pm
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.