The teleconference method allows the audience to see this webinar straight from my office, without having to travel. I have attended many ASCE webinars and find that ASCE knows how to put together an effective webinar.  -    Anonymous Attendee

INSTRUCTOR: Jerry A. DiMaggio, P.E., D.GE, M.ASCE

Purpose and Background

This webinar concentrates on cut walls (top down construction). Cut walls 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.  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 of the  current Edition  of AASHTO LRFD Specifications will be used as a basis of discussion.

The webinar assumes 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 includes 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.

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  design and construction  of cut retaining walls  
• Examine the possibilities and benefits of improved communications between geotechnical and structural specialists for cut wall design and construction

Intended Audience

The webinar will benefit professionals with 0-30  years of practical experience in analysis/design and construction of earth retaining structures.  Basic knowledge of geotechnical design and construction principles and earth pressure theories is a suggested. .

• 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