Abstract
This report concerns on the various criticisms on the auxiliary methods which applied in an actual weak rock tunnel construction. A series of questionnaire was given on a series of the selection and application of auxiliary methods in a tunnel construction. It asked answers on each selection or application from the safety, economical, easiness, reliability, and overall point of views. 101 people from clients, site and design engineers filled out the questionnaire. The statistically analyzed results showed a tendency of the criticisms which slightly depends on the occupation of an individual.
