No tunneling or driving shall be done under this permit without prior approval of the method to be followed where pipes or conduits are to cross the roadway. The crossing shall be made without disturbing the pavement, if possible, by tunneling or driving the pipe under the roadway. The pipe shall be carried under and across the road in a large casing unless otherwise herein provided or by written consent of the Municipal Engineer.
(1980 Code 95.17)