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Explosion Standoff Distances

Marvin Liebler, PE

Course Outline

This course provides a background on explosive materials and their reduction to equivalent pounds of TNT. The major blast parameters, namely initial overpressure and duration are then calculated. This data is then used to figure displacement of an SDOF (Single Degree of Freedom) system, used three different models. A concrete beam example provides insight and clarification of the material covered.

This course includes a multiple choice quiz at the end, which is designed to enhance the understanding of the course materials.

Learning Objective

At the conclusion of this course, the student will:

Intended Audience

Architects and engineers concerned with layout of new buildings and grounds, and revision of existing buildings and grounds to meet explosive threats.

Benefit to Attendees

The student will have a basic understanding of explosive behavior as a start towards reading the available literature and design.

Course Introduction

This course provides the nature of explosions, models for overpressure behavior, and two distinctly different mathematical methods of solutions. a practical example ties these concepts together.

Course Content

In this lesson, you are required to download and study the following course content in PDF format:

Explosion Standoff Distances

Please click on the above underlined hypertext to view, download or print the document for your study. Because of the large file size, we recommend that you first save the file to your computer by right clicking the mouse and choosing "Save Target As ...", and then open the file in Adobe Acrobat Reader. If you still experience any difficulty in downloading or opening this file, you may need to close some applications or reboot your computer to free up some memory.

Course Summary

The course provides three models (impulse,   triangular, and friedlander) for overpressure,  with two different types of solutions for each.  A practical , in depth, example concludes the text.


Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.

Take a Quiz

DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDH Center or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered architect and/or professional engineer/surveyor. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.