What are the different classes of telephone poles?
Types of utility poles used in overhead lines
- According to Pole materials, there are 3 types: wooden utility poles, steel utility poles and concrete utility poles.
- According to applications, there are also 3 types: transmission poles, distribution poles and light poles.
What is a Class 5 telephone pole?
Class 1 poles range from 35 to 125 feet in length and have a minimum 27-inch circumference at the tip. Their horizontal load-bearing capacity is 4,500 lbs. The sizes drop incrementally down to Class 5, which are 20 to 50 feet in length and a minimum of 19 inches in circumference.
What does the class of a pole mean?
The classes’ definition specifies a minimum circumference that depends on the species of tree and the length of the pole. This circumference is measured 6 feet from the butt of the pole. There is also a minimum top circumference that is the same for all species and lengths.
How is the class of a pole determined?
Pole Dimensions The load-carrying capacity of wood poles is determined by its dimensions, length and amount of taper from top to bottom. ANSI national standards, developed by the ASC O5 Committee, define poles in classes based on these dimensions and the species.
How much does a 30 ft telephone pole weigh?
30’OVERALL LENGTH | 25’ABOVE GRADE
| i | Pole Chart Legend | |
|---|---|---|
| POLE CATALOGUE NUMBER | OVERALL LENGTH (FT.) | NOMINAL POLE WEIGHT (LBS.) |
| HA-300-D | 30 | 1950 |
| HA-300-E | 30 | 1967 |
| HA-300-F | 30 | 1992 |
Why do telephone poles not rot?
In order to last for decades after they are sunk into the ground, wood utility poles need preservatives that fend off termites, fungi, and the elements. Not many chemicals are up to the challenge. About half the wood poles in the US are treated with pentachlorophenol, known as “penta” in the trade.
How tall is a wooden telephone pole?
The standard utility pole in the United States is about 40 ft (12 m) long and is buried about 6 ft (2 m) in the ground. However, poles can reach heights of 120 ft (37 m) or more to satisfy clearance requirements.
How much does a 60 ft telephone pole weigh?
60’OVERALL LENGTH | 52’ABOVE GRADE
| i | Pole Chart Legend | |
|---|---|---|
| POLE CATALOGUE NUMBER | OVERALL LENGTH (FT.) | NOMINAL POLE WEIGHT (LBS.) |
| HA-600-F | 60 | 7385 |
| HA-600-G | 60 | 9177 |
| HA-600-H | 60 | 9227 |
How much does a 25 ft power pole weigh?
364 lbs
25-ft PG&E-Approved Class 5 Utility Pole. Approximate weight: 364 lbs.
Can you burn telephone pole wood?
Preserved wood poles should not be burned in open fires or boilers because the preservatives may be in the smoke and ashes. Wood poles may be burned only in commercial or industrial incinerators or boilers in accordance with state and federal regulations.
How tall is a residential telephone pole?
30 to 60 feet
Typical utility poles measure 30 to 60 feet for poles in residential neighborhoods, and from 60 feet to over 120 feet along major highways.
How tall are residential utility poles?
How thick is a wooden telephone pole?
FRC poles are hollow and similar to the tubular steel poles, with a typical wall thickness of 1/4 to 1/2 inch with an outer polyurethane coating that is ~0.002-inch thin.
Are old telephone poles safe?
(Last year, a California court ruled that the state’s five major utility companies would have to warn the public via their power bills that more than four million wooden utility poles across the state have been deemed toxic.
How high is an average telephone pole?
Utility poles range in height The utility poles in your neighborhood can range in height from 30- to 60-feet tall. The larger ones you see along major roads and highways measure from 60 feet to more than 120 feet in height.
How much does a 25 ft telephone pole weigh?
25-ft PG&E-Approved Class 5 Utility Pole. Approximate weight: 364 lbs.
How much is a power pole cost?
VERY rough numbers – commonly about $5-10/LF for overhead runs (meaning new poles typically every 100-300 feet, possibly more in high tree area), plus $500-3000 per pole needed depending on length (probably about 36-40′ tall minimum for your area if not rural but can be much more in heavily treed areas, so closer to …
What is the difference between Class 1 and Class 5 poles?
Class 1 poles range from 35 to 125 feet in length and have a minimum 27-inch circumference at the tip. Their horizontal load-bearing capacity is 4,500 lbs. The sizes drop incrementally down to Class 5, which are 20 to 50 feet in length and a minimum of 19 inches in circumference.
What trees are telephone poles made of?
Shops that make telephone poles typically choose the stems from pine or cedar trees since they match the natural attributes to fulfill the engineering and style requirements in order to support telephone lines. The basic utility pole in the United States is 40 feet; nevertheless, poles can reach as high as 120 feet.
What is the weight of a Class 4 pole?
40 ft Class 4 Poles Douglas fir (8000 psi) 36 1/2” Western Red Cedar (6000 psi) 33 1/2” 2400 lb 86 Annex B: Groundline Stresses Note 7 87 Annex B: Groundline Stresses Average circumference tapers in the groundline zone of a pole Note 7 88 ANSI O5.1 Summary 2 ft Lc Bending Capacity = kxfiber strength xC3(ft-lb) 89 ANSI O5.1 Summary 2 ft Lc
What is a Class 1 pole on a totem pole?
Just below the H classification poles the scale starts over and goes from 1 to 10, so a Class 1 pole is the next smallest after a Class H1. Class 1 poles range from 35 to 125 feet in length and have a minimum 27-inch circumference at the tip.