LRFD Earth Retaining Structures: Cut Walls

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

Purpose and Background
Cut walls (top down construction) have a wide range of applications and encompass a diverse range of wall families including sheet pile, post and panel, H-pile and lagging, slurry and soil mix. These walls resist lateral earth and water pressures through their structural stiffness and anchorages. The LRFD platform offers a rational framework for consideration of different types of walls. This webinar will use the American Association of State Highway and Transportation Officials (AASHTO) LRFD Bridge and Structures Specifications as a basis for the technical content. Applicable articles in Sections 11, 10 and 3 of the 6th Edition (2012) of 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 cut retaining walls including fundamental aspects of earth pressure theories and earth pressure diagrams. It will include discussion on the terminology and types of cut walls, lateral earth pressure design approaches for cut walls, applicable load factors, use of minimum and maximum load factors for permanent loads, permanent and transient surcharge loads, identification of limit states and resistance factors, pressure surfaces for geotechnical and structural analysis, and consideration of extreme event limits state such as scour and seismic events. Introductory information on ground anchor application, construction and design of ground anchor walls in the context of limit states and general concepts will also be presented. A standalone webinar on ground anchor walls addresses the application of ground anchors in all types of cut walls in more detail.

RSVP to newsletter@centralohioasce.com by Thursday, November 27, 2014.

Learning Outcomes
The webinar will help you perform external stability analysis to size cut retaining walls using the LRFD approach.

Webinar Benefits

• Learn basics of LRFD based analysis of cut 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 cut 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 specialists involved in the selection, design and construction of cut retaining walls
• General and specialty wall contractors

Webinar Outline

• Terminology and types of cut walls
• Lateral earth pressures
• Consideration of surcharges
• Loads and load factors
• Failure modes and limit states
• External stability analysis for sheet pile, H-pile, slurry and soil mix walls
• Introduction to ground anchor application, construction and design
• 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.