EMBEDMENT OF POLES

THE INTENDED SPECIFICATION IS PRESENTED TO OFFER A DESIGN PROCEDURE WHICH WILL DETERMINE THE REQUIRED EMBEDMENT FOR POLES FOR TRANSMISSION LINES AND SIGNS. SEVERAL INDETERMINATE FACTORS WILL AFFECT THE DESIGN SUCH AS CYCLICAL NATURE OF THE LOADS WHICH WILL LEAVE A VOID AROUND THE POLE AND ALLOW INFILTRATION OF WATER, PLUMBNESS OF THE POLE, VARIATION OF THE SOIL STRATA, VARIATION IN THE SOIL AT DIFFERENT LOCATIONS, AND THE INDETERMINATE NATURE OF SOME OF THE LOADING CONDITIONS. FACTORS INFLUENCING EMBEDMENT MUST BE DETERMINED FROM EXPECTED EXTERNAL LOADS AND SOIL CHARACTERISTICS. THE POLE MAY BE PLACED BY ENCASEMENT USING CONCRETE WHICH IS POURED DIRECTLY INTO A HOLE AND RESULTS IN COMPOSITE ACTION BETWEEN THE POLE AND THE ENCASEMENT. THE BACKFILL MATERIAL MAY BE THE SAME AS THE SOIL REMOVED DURING EXCAVATION AND SHALL BE FIRMLY TAMPED AROUND THE POLE. FACTORS CONSIDERED SHOULD BE SIZE OF THE HOLE, TYPE OF BACKFILL, AND TYPE OF VIRGIN GROUND. THE DESIGN PROCEDURE RECOMMENDED TO DETERMINE THE REQUIRED EMBEDMENT OF THE POLE CONSIDERS THE SIZE OF THE POLE (AND/OR ITS ENCASEMENT), THE DEPTH OF EMBEDMENT, AND THE MOMENTS AND SHEARS ACTING ON THE POLE. THIS PROCEDURE WILL INSURE THAT THE SOIL IS NOT OVERSTRESSED. A CHECK MUST THEN BE MADE OF THE STRESSES IN THE POLE TO DETERMINE THAT THEY ARE WITHIN THE ALLOWABLES FOR THE MATERIAL USED.

  • Supplemental Notes:
    • No 618, ProCEEDINGS VOL 70, PP 617-624, 2 FIG, 2 TAB
  • Publication Date: 1969-1

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Filing Info

  • Accession Number: 00208944
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 21 1994 12:00AM