After receiving a Bachelor's degree, if you are not ready to start or apply for graduate admission for a degree or certificate program but still want to take a few graduate courses, you can go through the non-degree graduate program.

Apply online through the Auburn Graduate School, select "Non-Degree/Graduate School." Not the CE Department but the Graduate School and the College of Engineering will process your application. You need to submit your transcripts for the application.

The Letters of Recommendation (LORs) are not required for the Non-Degree/Graduate School applications.  The LOR section in the AY system will not disappear, however, you may skip the section.

With departmental approval, up to 12 non-degree credit hours of graduate courses may be used toward the degree/certificate.

You should contact the instructor to see whether you have an adequate academic background to take the course.