Drilled shafts are often a technically sound and cost-effective foundation choice where a deep foundation solution is appropriate based on-site conditions, applied loads, and performance requirements. To avoid adverse performance […]

Spread footings are often under-utilized in comparison to the costlier deep foundation systems. This workshop will include discussions about spread footings on soil and rock.

Spread footings are often under-utilized in comparison to the costlier deep foundation systems. This workshop will include discussions about spread footings on soil and rock.

Mechanically Stabilized Earth (MSE) walls are used extensively for grade-separation fill structures in many applications, e.g., highways, railways, marine, commercial, etc. To avoid adverse performance issues, design processes for an […]

This workshop on soil nail walls will help gain a better understanding of the design and construction procedures using concepts of limit states that will be indexed to the latest guidelines based on the Load and Resistance Factor Design (LRFD) methodology of the American Association of State Highway Officials (AASHTO) and Federal Highway Administration (FHWA).

Drilled shaft foundations in soils and rocks are often a technically sound and cost-effective choice where a deep foundation solution is appropriate based on site conditions, applied loads, project schedule, […]

Mechanically Stabilized Earth (MSE) walls are used extensively for grade-separation fill structures in many applications, e.g., highways, railways, marine, commercial, etc. To avoid adverse performance issues, and to ensure safe […]

An ASCE eLearning webinar sponsored by Lumivero. From roadways to environmental, civil engineering disciplines may vary, but they all share a core priority: safety. Traditionally, safety has been assessed using […]

This 2-day workshop will discuss compaction of soils and engineering properties of compacted soils. Using a collaborative and interactive learning approach, this virtual workshop will help learners understand challenges associated with specification and construction of safe and serviceable compacted soil structures that will also help long-term maintenance needs. Learn new concepts of soil compaction that builds upon your prior knowledge and through active participation you will integrate the new knowledge into your understanding. You will also generate new ideas through brainstorming and discussion and develop a better understanding of the practical methods and processes of soil compaction, learn about real-world problems that your peers encounter on projects, and solutions they have implemented, and receive real-time expert feedback. In between the two live sessions, attendees will independently work on an application (e.g., exercises) or a reflection (e.g., reading) assignment.

Deep foundations are designed to transfer load through unsuitable subsurface layers to suitable bearing strata. One of the key advantages of deep foundations is their ability to withstand significant lateral loads. When deep foundations are installed through a soil deposit undergoing consolidation, the resulting relative downward movement of the soil around piles induces "downdrag" forces on the piles. If embankments are placed adjacent to deep foundations, as in the case of bridge abutments, “lateral squeeze” effects can induce significant unbalanced lateral forces on deep foundations. In loose, collapse-susceptible soils, moisture-induced soil collapse can exert significant lateral effects on deep foundations. Seismic events can generate lateral spread and liquefaction-related ground deformations. Adjacent excavations can induce differential lateral forces on deep foundations. This workshop presents a lateral analysis of deep foundations and methods for evaluating induced ground deformations in their design. The presentation will be based on the latest (2020) version of the Bridge Design Specifications (BDS) based on the Load and Resistance Factor Design (LRFD) platform of the American Association of State Highway and Transportation Officials, which is a key component of Federal Highway Administration (FHWA) guidelines for deep foundations. Information from AASHTO’s latest (2020) Guide Specification for Service Life Design will also be presented.