Any individual who is prepared to provide his best knowledge and experience regarding underground construction and building altruistically can become a member of DAUB. Membership should be made up in equal parts from representatives of public authorities, science and industry.

The maximum membership should not exceed 30 members. Admission of new members requires endorsment of 2/3 of a duly convened committee meeting. Term of office is 3 years, with re-election being possible.

Withdraw of membership can be declared by a written note to the chair at any time. On request of the chair, a committee meeting can exclude a member, should it not meet its obligations within DAUB. The decision can be taken with a 2/3 majority only.