NAVY MIL-P-28766 (1)-1972 POLE STRUCTURAL WOODEN FOR HIGH FREQUENCY (HF)《高频(HF)结构木杆》.pdf

1、MIL-P-27bb (1) 55 7797706 02154b 1 m, AMENDMENT 1 24 August 1972 MILITARY SPECIFICATION POLES, STRUCTURAL WOODEN, FOR HIGH FREQUENCY (HF) ANTENNAS This amendment forms a part of Military Specification MIL-P-28766(EC), 26 February 1971. Page 2 2.2: turai Steel“. Delete ASTM specification “A36 - Speci

2、fication for Struc- 3.2.2.1, line 2: Delete “pitch“ and substitute “pith“. Page 3 3.3.1: Delete first sentence and substitute “Only when specif- ically allowed by the detailed antenna specification or the pro- curement document, may poles be spliced (see 6.2).“ 3.4: Delete first sentence and substit

3、ute “When the detailed antenna specification allows non-embedded pole bases, pole anchorage design shall avoid the use of through bolts (see 6.2) .I1 Page 5 4.3.1.4: Delete “(ASTM A36).“ 5.1.1: Delete “Not applicable“ and substitute “Each pole shall be banded at each end with at least three 12 gage

4、steel sheet metal strips 1-inch wide. starting at the ends of the pole, and shall be tightly banded to the pole and securely nailed in position. The strips shall be spaced at 6-inch intervals, Page 6 6.2: Add “(g) Permission to splice poles, if desired (see 3.3.1)“ and “(h) Permission for non-embedm

5、ent of pole bases, if desired (see 3,4).“ 6.4.1: Delete “6.1“ and substitute “6.4.1.“ *U.S. COVEKNMENT PRISTING OFFICE :1972-714-537/1378 7kS DOCUMENT CONTAINS I PAGES. Preparing activity (Pro j ec t 5510-N139 ) Navy - EC (7 FLIC: 5510 / Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-