Transmission poles: Hughes Brothers manufactures Douglas-fir crossarms to a large variety of specifications and cross-sectional dimensions. Find which crossarm specification is best suited to the application at hand.
1) Utility Specifications:
Hughes Brothers, Inc. can manufacture crossarms in accordance with any utility specification using material which has been pre-graded to WCLIB Paragraph 170 and 170a. Crossarms are also routinely manufactured in accordance with ANSI 05.3, RUS 1728H-701 and the old RUS DT-5B and EEI specification TD-90.
2) RUS Specification:
Unless specified otherwise, Hughes Brothers lumber- graders will apply the provisions of RUS 1728H-701 as the minimum acceptable quality of wood crossarm for any crossarm purchased.
Choice of structural materials:
Hughes Brothers, Inc. offers distribution crossarms made from solid sawn Douglas-fir, glue laminated wood in ac- cordance with ANSI 05.2. By making all types of crossarms available, the customer can make the best choice based on economic and other factors present at that time.