Member $99.00 | Non-Member $159.00
Sponsored by ASCE Continuing Education and the Structural Engineering Institute (SEI).
View all webinars related to Alexander Newman.
ASCE webinars are great for us. We are in a remote location and it is difficult to get quality training for our staff without much expense. - Anonymous Attendee
INSTRUCTOR: Alexander Newman, P.E., F.ASCEPurpose and Background
Many renovation projects involve strengthening of foundations. Whenever an increase in gravity loading or a lateral load retrofit is proposed, foundation strengthening is likely to follow. Underpinning, the lowering or enlarging an existing foundation, is a basic technique of foundation strengthening. Underpinning of existing foundations is particularly common when new construction occurs nearby.
There are few standards dealing with strengthening of foundations, and many designers are looking for some relevant references. Whether you are one of them, or simply want to validate the practices that your firm follows, this webinar will help. The objective is to provide a concise yet practical primer on foundation strengthening and underpinning practices in the United States. The presentation describes the everyday challenges associated with this work, illustrated by a host of practical design details and several case studies.
The webinar begins with an overview of the reasons foundations might require strengthening. After explaining the basic philosophy of foundation strengthening and underpinning, the instructor examines the available approaches. The first one is an often overlooked but typically cost-effective method of adding structural supports in lieu of strengthening existing foundations. A discussion of shoring and replacement of foundations is next, followed by other techniques.
The largest webinar segment is devoted to underpinning, including both the pit variety and the various methods involving drilled piers, micropiles, and proprietary piers. The webinar concludes with final questions and answers from the audience.
Learning Outcomes/Benefits
- Study various methods of strengthening building foundations
- Understand where pit underpinning is appropriate and where other strengthening methods might be more useful
- Examine the techniques for strengthening rubble foundations
- Find out how minipiles and proprietary piers can help strengthen foundations
- Learn about modern methods of soil improvement that can be used in lieu of the conventional underpinning techniques
Intended Audience
Structural and civil engineers and other design and construction professionals seeking to learn about underpinning and strengthening of foundations will benefit from this webinar.
Webinar Outline
- Introduction: Why strengthen foundations
- General approach and methods
- Adding supports
- Shoring and replacement
- Underpinning
- Pit underpinning
- Using drilled piers, minipiles, proprietary piers
- Enlarging footings
- Other strengthening topics
- Modifying soil properties
- Conclusion