Convention, Volume 21922 |
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Halaman
... poles__ Table 19. Ultimate fiber stresses of wood poles ... Table 20. Allowable fiber stresses for wood poles under ver- tical and transverse loading .. 122 4 Revised tables for Appendix F of the National Electrical Safety Code - wood ...
... poles__ Table 19. Ultimate fiber stresses of wood poles ... Table 20. Allowable fiber stresses for wood poles under ver- tical and transverse loading .. 122 4 Revised tables for Appendix F of the National Electrical Safety Code - wood ...
Halaman 5
... poles to break off under strain , they are likely to go down during any storm , and thus put the wire service out of com- mission ; such damaged poles are a serious menace along the right of way of railroads . The beetle will attack ...
... poles to break off under strain , they are likely to go down during any storm , and thus put the wire service out of com- mission ; such damaged poles are a serious menace along the right of way of railroads . The beetle will attack ...
Halaman 9
... poles were not held too long before the treatment began , the Government inspectors have the right to cut up five poles per thousand and reject the entire lot if one of the five poles is below the requirements . After the poles are ...
... poles were not held too long before the treatment began , the Government inspectors have the right to cut up five poles per thousand and reject the entire lot if one of the five poles is below the requirements . After the poles are ...
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Report of Prime Movers Committee Continued | 699 |
30 P M | 920 |
45 P M | 1044 |
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