LRFD Earth Retaining Structures: Fill Walls

*Open only to Central Ohio Section Members
*Seating is limited to the first 25 people
*Bring your own lunch

Purpose and Background
Fill walls have a wide range of applications and range in configuration from the basic gravity and cast-in-place (CIP) semi-gravity walls to complex mechanically stabilized earth (MSE) walls. The LRFD platform offers a rational framework for consideration of different types of fill walls. The webinar will use the 6th Edition (2012) American Association of State Highway and Transportation Officials (AASHTO) LRFD Bridge Design Specifications as a basis for the technical content. Applicable articles in Sections 11, 10 and 3 of the AASHTO LRFD Specifications will be used as a basis of discussion.

The webinar will assume that the participant has a basic working knowledge of design and construction of fill retaining walls including fundamental aspects of earth pressure theories. The webinar will include discussion on the terminology and types of fill walls, lateral earth pressure theories for fill walls, permanent and transient surcharge loads, applicable load factors, use of minimum and maximum load factors for permanent loads, identification of limit states and resistance factors, pressure surfaces for geotechnical and structural analysis, and consideration of extreme event limit states such as seismic events.

The webinar will concentrate on external stability of CIP and MSE walls. Introductory information on internal stability of MSE walls in the context of limit states and general concepts will also be presented. A standalone webinar on MSE walls addresses MSE walls in more detail.

RSVP to newsletter@centralohioasce.com by Thursday, November 13, 2014.

Learning Outcomes
This webinar will help participants perform external stability analysis to size fill retaining walls using the LRFD approach.

Webinar Benefits

• Learn basics of LRFD based analysis of fill retaining walls
• Continue building on the knowledge gained from previous LRFD webinars
• Examine the possibilities and benefits of improved communications between geotechnical and structural specialists for fill wall design

Intended Audience
This webinar will benefit professionals with 0-25 years of practical experience in analysis/design and construction of earth retaining structures. Basic knowledge of geoetechnical principles, LRFD, shallow foundations, and earth pressure theories is a prerequisite.

• Geotechnical and structural specialists
• General civil engineering designers involved in the analysis and design of earth retaining structures and in particular fill walls
• General and specialty wall contractors

Webinar Outline

• Terminology and types of fill walls
• Lateral earth pressures
• Consideration of surcharges
• Loads and load factors
• Limit states and resistance factors
• External stability analysis for CIP and MSE walls
• Introduction to limit states for internal stability of MSE walls
• Extreme events

See the ASCE website for more info.

The Central Ohio Section of ASCE sponsors free continuing education webinars as a service to our members. These webinars are produced by ASCE and normally cost $250 or $300 for ASCE members. However, the Central Ohio Section is paying the registration fee and inviting any interested section members to attend for free. Just RSVP by the deadline. Seating is limited, so do not delay.

You can see the complete list of webinars available from ASCE National on their website. If you see one you like, let us know. If you and your company would like to host one, let us know that too. If you open it up to any interested Central Ohio ASCE section members to come, we will pay the registration fee.