Design of Foundations for Dynamically Loaded Equipment

By the end of this course, you will be able to:

• Calculate dynamic loads generated by common types of machinery
• Select appropriate foundation systems based on performance and soil conditions
• Analyze the dynamic response of shallow and pile-supported foundations
• Design tabletop structures to support equipment under dynamic loading
• Diagnose vibration issues and implement effective mitigation strategies

Description

When designing equipment foundations, you are responsible for ensuring stable performance under dynamic loads while accounting for soil behaviour, structural response, and vibration risks. Inadequate analysis or design decisions can lead to excessive movement, equipment damage, or long-term operational failures, particularly in challenging conditions such as frozen or expansive soils.

This course equips you with the practical tools and frameworks needed to evaluate and design foundations for dynamically loaded equipment. You will work through how machinery induces loads, how those loads interact with soils and structural systems, and how different foundation types perform under varying conditions. Emphasis is placed on analyzing dynamic response, selecting appropriate design approaches, and addressing vibration-related issues that affect reliability and safety.

Through applied examples and real-world case studies, you will learn how to model and verify foundation behaviour using industry software such as DYNA 6.1, alongside manual and finite-element approaches. By the end of the course, you will be able to confidently assess design options, validate results, and make informed engineering decisions that improve the performance and longevity of equipment foundation systems.

Who Should Attend

This course is designed for:

• Structural and consulting engineers involved in design of foundation for vibratory or moving equipment
• Field engineers working with industrial vibratory equipment
• Intermediate to senior professionals seeking to enhance their expertise in the subject with advanced knowledge and practical design skills.

Day I

Welcome, Introduction, Course Preview, and Learning Objectives

Introduction to Design of Equipment Foundations (Introduction, Advanced)
Design objectives, design procedure, degrees of freedom, pure and coupled modes of vibration, free and forced vibrations, and resonance. Types of foundations and their uses: rigid block foundations, mat foundations, deep foundations, and the significance of damping. Anchorages for vibrating machinery.

Dynamic Soil Properties (Introduction, Advanced)
Small strain elastic moduli of soil, shear wave, compression wave, methods of soil exploration for dynamic problems, method of dynamic impedance

Methods of Analysis (based on example) - oil pump on pile foundation (Introduction, Advanced)
Demonstration of computer analysis using DYNA 6 software, its capabilities and limitations

Design of Shallow Foundations (Introduction, Advanced)
Theory of isotropic elastic half-space, the response of circular footings, shape factors for the response of non-circular footings, stiffness and damping functions, the effect of footing embedment, proximity of bedrock layers

Design Example (Introduction, Advanced)
Free vibration analysis of a rigid block foundation

Design of Shallow Foundations – additional chapters (Advanced)
Theory of layered elastic half-space, complex stiffness and damping functions, frequency dependence

Dynamically Loaded Foundations on Frozen and Expansive Soils (Advanced)
Frost effects, dynamic properties of frozen soil, design considerations, static and dynamic design criteria. Expansive soils, principles of foundation construction on expansive soils, types of foundations for dynamic machinery

Adjournment

Day II

Design of Pile Foundations - Single Piles (Introduction, Advanced)
Examples of piles applications, the effect of vibration on static pile design, stiffness and damping of single piles,

Design Example (Introduction, Advanced)
Common pump foundation on piles (illustrates the concept of “good” vs “bad” speed range for rotary machinery)

Dynamic Response of Vibratory Machinery Foundations (Introduction, Advanced)
Dynamic forces from reciprocating machinery, dynamic forces from rotary machinery, high-tuned and low-tuned foundations, normal and abnormal regimes

Dynamic Response of Impact Machinery Foundations (Introduction, Advanced)
Types of impact machinery, foundations for impact machinery, design criteria, derivation of impact forces, mathematical models and methods of solution, propagation of vibrations in the soil

Vibration Damage and Taking Suitable Remedial Measures (Introduction, Advanced)
Design criteria, resonance separation, admissible dynamic amplitudes and velocities, stationary and transitional resonance, problem assessment and evaluation, remedial principles and techniques

Design of Pile Foundations - Single Piles – additional chapters (Advanced)
Pile dynamic response - analytical methods, pile dynamic response using common FE software

Design of Pile Foundations - Pile Groups (Advanced)
Pile-soil-pile interaction, understanding of dynamic group effects, group factors calculation

Design Example – pile foundations – special chapters (Advanced)
Pump foundation on piles – case of layered and irregular soils

Dynamic Response of Vibratory Machinery Foundations – specialty chapters (Advanced)
Basics of rotor dynamics, critical and tripping speeds, dynamic loads from multiple pieces of equipment

Adjournment

Day III

Tabletop Structures (Advanced)
Definitions, modes of oscillation, foundation-structure interaction, stiffness and damping, static and dynamic design criteria, method of symbolic dynamic models

Methods of Analysis (based on example) - tabletop-mounted, turbine-driven centrifugal compressor (Advanced)
Hand analysis using MS Excel: generalized dynamic models, equations for free vibrations, equations for forced vibrations, interpretation of results

Methods of Analysis (based on example) - tabletop-mounted, turbine-driven centrifugal compressor (Advanced)
Demonstration of computer analysis using common FE software

Methods of Analysis (based on example) - skid-mounted reciprocating compressor (Advanced)
Hand analysis partially automated using common FE software: derivation of stiffness and inertial properties, pile group effects, equations for free vibrations, assessment of damping, equations for forced vibrations, interpretation of results, mitigation of excessive vibration

Open Forum

Questions and Answers and Feedback to Participants on Achievement of Learning Objectives