General Order 64
Section VII
Detail Construction Requirements – Tower Lines
71
General.
The
following rules cover certain special details for the construction of tower
lines. These rules are supplemental to
the rules given for supply lines in general and to the detail constructional
requirements for supply lines, which rules must be observed in tower line construction
except as modified herein, or where clearly inapplicable. (See 17 (b) for definition of tower lines.)