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Online Workshop – Serviceability Effects of Foundation Movements and Deterioration on Bridge and Approach Structures

Online

Foundations for bridges and approach structures should be designed so that their movements will not damage the bridge superstructure and associated structures such as abutments and approach slabs. Various aspects of movements that should be considered in the design of bridges include (a) the effect of uneven (differential) settlement between various support elements, (b) the rotation and horizontal movements of the foundation system affecting movements at the bridge-seat level; (c) movements due to material deterioration; and (d) serviceability problems near a bridge abutment and approaches. The presentation will be based on latest (2020) version of the Bridge Design Specifications (BDS) and 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 this topic. Information on Extended Service Life (ESL) and Protection Index (PI) concepts from AASHTO’s latest (2020) Guide Specification for Service life design will also be presented.

Online Workshop: Mechanically Stabilized Earth (MSE) Walls – Limit State Based Design Principles

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 MSE wall must be tailored to specific geometry and the environment (conditions) expected over its specified lifetime. This workshop is geared towards development of a […]

Online Workshop: Soil Nail Walls – Design and Construction

Online

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).

Online Workshop: Drilled Shafts in Soil and Rock – Geotechnical Design Aspects

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, and performance requirements. When soils are of relatively poor quality and the structure loads are relatively large the shafts are often drilled through the poor […]

Online Workshop on Mechanically Stabilized Earth (MSE) Walls – Understanding Fill Properties and Good Practices for Details

Online

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 and serviceable MSE walls, the fills and component details must be tailored to specific geometry and the environment (conditions) expected over its specified lifetime. To […]