49.1-A |
Strength |
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(1) |
Wood poles shall be of sound timber and shall meet the following: |
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a) |
Temperature and loading factors as specified in Rule 43. |
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b) |
Safety factors not less than those specified in Rule 44, and the modulus of rupture used in calculation of safety factors per Rule 48.1. |
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(2) |
Non-wood poles, towers and structures, including their foundations, shall meet the following: |
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a) |
Temperature and loading factors as specified in Rule 43. |
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b) |
Safety factors not less than those specified in Rule 44, and the structural values used in calculation of safety factors per Rules 48.2, 48.3 and 48.6. |
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(3) |
In cases where lateral stresses on a pole or structure require the use of a guy(s), the pole or structure below the point of the guy attachment shall be considered merely a strut, the guy(s) taking all lateral stresses. In such cases, the pole strength requirement shall apply at the point of guy attachment rather than at the ground line. |
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(4) |
Crossing spans - for crossing spans, spliced or stub reinforced poles or pole top extensions, including the attachment (joint) of the different members involved, shall meet all of the vertical, transverse and longitudinal strength requirements of these rules as if a whole pole were used. |
49.1-A |
Strength (See Rule 48) |
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(1) |
Wood poles shall be of sound timber and shall meet the following: . |
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|
a) |
Temperature and loading factors as specified in Rule 43. |
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|
b) |
Safety factors not less than those specified in Rule 44, and the modulus of rupture used in calculation of safety factors per Rule 48.1. |
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(2) |
Non-wood poles, towers and structures, including their foundations, shall meet the following: |
|
|
a) |
Temperature and loading factors as specified in Rule 43. |
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|
b) |
Safety factors not less than those specified in Rule 44, and the structural values used in calculation of safety factors per Rules 48.2, 48.3 and 48.6. |
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(3) |
In cases where lateral stressesloads on a pole or structure require the use of a guy(s), the pole or structure below the point of the guy attachment shall be considered merely a strut, the guy(s) taking all lateral stresses. loads. In such cases, the pole strength requirement shall apply at the point of guy attachment rather than at the ground line. |
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(4) |
Crossing spans - for crossing spans, spliced or stub reinforced poles or pole top extensions, including the attachment (joint) of the different members involved, shall meet all of the vertical, transverse and longitudinal strength requirements of these rules as if a whole pole were used. |