Class 5 1, lb. Compression (psi). Tension (psi). Bending Capacity = k x fiber strength x C3 (ft-lb). Fiber Strength. Fiber Stress. Modulus of Rupture. ANSI O 4. ANSI. American National Standards Institute. 4 ANSI accredits the procedures of standards developing organizations. National ANSI O – Wood Poles. (ANSI) publishes such a standard: ANSI , Wood. Poles, Specifications, and Dimensions (2). Mem bers of ANSI Committee 05 periodically review and update .

Author: Kigalrajas Akinole
Country: Slovenia
Language: English (Spanish)
Genre: Art
Published (Last): 2 May 2006
Pages: 474
PDF File Size: 9.16 Mb
ePub File Size: 18.22 Mb
ISBN: 651-5-20562-284-4
Downloads: 28698
Price: Free* [*Free Regsitration Required]
Uploader: Nilabar

The factors that adjusted the test values ranged from 1. Results and Application This derivation was found to result in a design methodology that has a good correlation with the test ahsi see examples in Figures Your Alert Profile lists the documents that will be monitored.

If the maximum stress point is at the groundline, the pole capacity is based on the Table 1 fiber stress and minimum pole dimensions. Available for Subscriptions Available in Packages Standard is included in: Proceed to Checkout Continue Shopping. ansii

The adjustment factor is calculated by comparing the change in section modulus between the minimum dimension for a pole and the dimension that ajsi one half of a pole class larger. Conditioning Adjustment The test poles were not conditioned for treatment. This standard is also available to be included in Standards Subscriptions.

The MOR will increase above groundline due to drying to equilibrium conditions as compared to test results of green poles. Therefore, the test data needed to be adjusted to account for the effects of conditioning so that expected strength correlates with the test data.

In some cases, the projected values were higher than the observed and in other cases lower. This standard provides minimum specifications for the quality and dimensions of wood poles that are to be used as single-pole utility structures.


If the document is revised or amended, you will be notified by email. Please copy and paste this embed script to where you want to embed Embed Script.

These calculated pole capacities show a good correlation with the test data. Should you need to use one of these three materials, you must determine the correct properties for your jurisdictions and incorporate them into your library.

PLS-POLE ANSI Wood Pole Components Page

Standards Subsctiption may be the perfect solution. No adjustment for load sharing 2. Strength Of MaterialsMathematicsNature. The same pole unincised, groundline or full length standard incising treated with Penta or Copper Naphthenate in Oil or Creosote will weigh lbs.

These files are being provided on an “as-is” basis. Please help us to share our service with your friends. However, utilities use poles that are conditioned and treated before going into service. An applied load anis feet from the tip of a taller pole will cause the maximum stress point to occur above groundline. Finally, the density of wood poles can vary greatly. aansi

We have also provided a complete file ansi. The fiber stress values needed to be re-evaluated based on consideration of the additional test data.

PLS-POLE ANSI Wood Pole Component Files

Since all designs are based on the minimum dimensions, the design fiber stress value is multiplied by the oversize factor to account for the actual average oversize. This results in Douglas Fir poles having a density of 56 to 65 pcf, depending on the treatment process.

Not only does the actual species of wood vary, but the moisture content, drying process, and treatment are all factors that can result in large density variations. If the maximum stress point is above ground, adjust the fiber stress per the height adjustment equation and use the minimum dimension at that height.


However, consensus agreement was reached for the standard because the resulting designs are conservative in the vast majority of pole sizes. One other result of this exercise was the confirmation that pole capacity on taller poles changes depending on the height of the applied loads.

ANSI O – Wood Poles – Specifications and Dimensions

Should you need to use one of these three materials you must determine the correct properties for your jurisdictions and incorporate them into your library.

The derivation applied the formula in reverse in order to provide an estimate of actual groundline MOR, and if the resulting pole capacity correlated well with the test data, then designers would have a method to reliably project pole capacity.

No adjustment for variability 3. The resulting projected fiber stress values at the groundline varied compared to the observed groundline stress due to actual pole geometry. For the most part, distribution designs should remain the same while some transmission designs may call for higher class poles. Power Line Systems, Inc. MAT file you can download below.

For poles that break above the groundline, it is important to note the difference between the theoretical projected fiber stress at the groundline and the observed groundline fiber stress.