(dimensions; alinement) (4-70)
Construction characteristics, such as the type of lining and portal material, ventilation, and drainage are entered
in the next four boxes.
What types of materials were used in the construction of the tunnel described by Panel 4-5?
(go to next fame) (4-98)
Study the front of the sample form, Panel 4-9. Notice that there is a brief heading, which indicates the
The Ferry Reconnaissance Report is dated and addressed in the _____________________________________ .