(1) Engineering experience shall include the following:

(a) Subprofessional experience gained before graduation. This experience shall be credited to the required preprofessional experience at a maximum of one-half the period of experience. Subprofessional experience shall be limited to no more than one year of preprofessional experience. Credible subprofessional experience may include one or more of the following:

(i) engineering experience, supervised; or

(ii) construction experience, supervised.

(b) Preprofessional experience is four years of total progressive experience, all of which is required to be completed at the time of application. Credible experience may include:

(i) approved subprofessional experience;

(ii) progressive experience on engineering projects which indicate the experience is of increasing quality and required greater responsibility;

(iii) experience not obtained in violation of the licensure act;

(iv) experience gained under the supervision of a licensed professional engineer/land surveyor or, if not, an explanation of why the experience should be considered acceptable;

(v) credible teaching experience at an advanced level, post graduate or senior graduate, in a college or university offering an engineering curriculum of four years or more that is approved by the board;

(vi) experience gained in engineering research and design projects by members of an engineering faculty, in an engineering curriculum approved by the board;

(vii) successful completion of graduate study leading to the master's degree in engineering, which has followed a baccalaureate degree in engineering, as credit for one year's experience. If the Ph.D. in engineering is completed under the same conditions, two year's total experience may be credited, including the one year credited for the master's degree, in the two year's total. If the Ph.D. is obtained without the master's degree, two year's experience may be credited. All degrees shall have been obtained from colleges or universities with board approved programs.

(2) Experience must be completed at the time of application. Experience time cannot be counted during periods counted for education.

(3) Experience should be gained under the supervision of a registered professional engineer or, if not, an explanation should be made showing why the experience should be considered acceptable.

(4) Upon request by the board, an applicant must demonstrate knowledge of fundamental principles of engineering design and the practical solution of engineering problems.