Abstract: Session B  9:10 am (Back to Session B)
A Live Demonstration of 3D Stream Restoration Design Using AutoCAD® Civil 3D® 2018 Corridors

Nathan Ober, P.G.
Civil & Environmental Consultants, Inc.
Bridgeport, WV

The complexity of multifaceted streams presents a challenge for three-dimensional grading plans and hydraulic modeling.  With the development of customized subassemblies in AutoCAD® Civil 3D®, corridors surfaces can be created to produce three-dimensional features such as riffles, runs, pools, glides, point bars, inn-berms, and scour pools. Not only does this style of design create the detail that is attractive for natural channel design, but it also dynamically and inherently links the three components (pattern, profile, and dimension) of a stream allowing a designer to make iterative changes with instantaneous and accurate three-dimensional updates.  A workflow model was developed by Civil & Environmental Consultants, Inc. to provide optimization and balancing of earthwork volumes, accurate grading plans and quantities, precision construction grades, and cost savings during design and construction.  Additionally, customized tools and processes have been developed to provide users with the capability to complete accurate, early stage design decisions with a minimal amount of training/expertise in AutoCAD and Civil 3D.  This presentation will include a live demonstration of a natural stream design using corridors in AutoCAD® Civil 3D® 2018 to produce the bankfull channel and associated floodplain.  This demonstration will not cover the necessary steps required to develop geomorphic, hydrologic, and hydraulic data for a natural stream design.

About the Speakers: Nathan (Nate) Ober is the ecosystem restoration practice lead and geomorphologist at Civil & Environmental Consultants, Inc.  As a geomorphologist, Nate has managed and designed 50+ miles of stream restoration projects, drawing from more than 15 years of experience in fluvial geomorphology, natural channel design, construction management, and post-restoration monitoring.