UNITED STATES DEPARTMENT OF AGRICULTURE
Rural Utilities Service
BULLETIN 1728F-810
SUBJECT: Electric Transmission Specifications and Drawings,
34.5 kV Through 69 kV
Incorporated by reference in 7 CFR Part 1728
TO: All Electric Borrowers
RUS Electric Staff
EFFECTIVE DATE: Date Of Approval
EXPIRATION DATE: Not applicable. Incorporated by reference in
7 CFR 1728.
OFFICE OF PRIMARY INTEREST: Transmission Branch, Electric Staff
Division
PREVIOUS INSTRUCTIONS: This bulletin replaces Bulletin 50-2,
Electric Transmission Specifications and Drawings, 34.5 kV
Through 69 kV, issued October 12, 1988.
FILING INSTRUCTIONS: Discard Bulletin 50-2 dated October 12,
1988, and replace with this bulletin. File with 7 CFR part 1728.
PURPOSE: To provide general construction requirements for
representative wood pole structures and assemblies for 34.5
through 69 kV transmission lines.
/S/ Blaine Stockton
April 9, 1999
Assistant Administrator Date
Electric Program
Bulletin 1728F-810
Page i
TABLE OF CONTENTS
Description
Page
Introduction - General..........................................iii-iv
Introduction - Specific Instructions............................v-viii
Technical Specifications
General....................................................... 1-1
Clearing...................................................... 2-1
Access........................................................ 3-1
Wood Poles.................................................... 4-1
Pole Top Assemblies........................................... 5-1
Structure Assembly............................................ 6-1
Structure Erection............................................ 7-1
Guys and Anchors.............................................. 8-1
Grounding & Bonding........................................... 9-1
Insulators & Hardware......................................... 10-1
Conductors & Overhead G