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    Author(s): R.W. Rumsey; G.E. Woodson
    Date: 1973
    Source: Forest Products Journal 23(12):47-50
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (902 KB)

    Description

    Woodpecker damage caused extensive reductions in strength of 50-foot, class-2 utility poles, the amount depending on the cross-sectional area of wood removed and its distance from the apex. Two methods for estimating when damaged poles should be replaced proved to be conservative when applied to results of field tests. Such conservative predictions of falling loads could be used for systematic replacement of damaged poles. Each utility company would have to balance the cost of timely replacement (with resultant loss of some serviceable pole life) against the cost of pole failure and replacement after failure.

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    Citation

    Rumsey, R.W.; Woodson, G.E. 1973. Strength loss in southern pine poles damaged by woodpeckers. Forest Products Journal 23(12):47-50

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