Engineering Reference

Pole & Structural Data

Wood pole classes per ANSI O5.1, steel and concrete pole capacities, crossarm specifications, guy wire strand, and anchor selection. Field reference for distribution and transmission structure design.

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Reference only. Pole and hardware values shown are general industry data per ANSI O5.1 and manufacturer literature. Always verify against current standards and engineering specifications for any job-specific application. Pole class, height, embedment, and hardware selection must follow your utility\'s design standards and project drawings.

Species:

Southern Yellow Pine

Fiber stress: 8,000 psi · Southeast US

Most common pole species in NA. CCA or penta treated.

62 poles shown for Southern Yellow Pine. Designated load is the horizontal force at 2 ft from top (ANSI O5.1).

Height	Class	Top Circ	GL Circ	Weight	Embedment	Designated Load
30 ft	1	23.0 in	33.5 in	720 lb	5.5 ft	4,500 lbf
30 ft	2	22.0 in	31.5 in	640 lb	5.5 ft	3,700 lbf
30 ft	3	21.0 in	29.5 in	570 lb	5.5 ft	3,000 lbf
30 ft	4	19.0 in	27.5 in	490 lb	5.5 ft	2,400 lbf
30 ft	5	17.0 in	25.5 in	420 lb	5.5 ft	1,900 lbf
35 ft	1	23.0 in	35.5 in	900 lb	6 ft	4,500 lbf
35 ft	2	22.0 in	33.5 in	800 lb	6 ft	3,700 lbf
35 ft	3	21.0 in	31.5 in	710 lb	6 ft	3,000 lbf
35 ft	4	19.0 in	29.5 in	610 lb	6 ft	2,400 lbf
35 ft	5	17.0 in	27.5 in	520 lb	6 ft	1,900 lbf
40 ft	1	23.0 in	37.5 in	1,100 lb	6 ft	4,500 lbf
40 ft	2	22.0 in	35.5 in	980 lb	6 ft	3,700 lbf
40 ft	3	21.0 in	33.5 in	870 lb	6 ft	3,000 lbf
40 ft	4	19.0 in	31.0 in	740 lb	6 ft	2,400 lbf
40 ft	5	17.0 in	29.0 in	640 lb	6 ft	1,900 lbf
45 ft	1	23.0 in	39.5 in	1,300 lb	6.5 ft	4,500 lbf
45 ft	2	22.0 in	37.5 in	1,170 lb	6.5 ft	3,700 lbf
45 ft	3	21.0 in	35.5 in	1,040 lb	6.5 ft	3,000 lbf
45 ft	4	19.0 in	33.0 in	890 lb	6.5 ft	2,400 lbf
45 ft	5	17.0 in	30.5 in	760 lb	6.5 ft	1,900 lbf
50 ft	H1	25.0 in	43.0 in	1,700 lb	7 ft	6,400 lbf
50 ft	1	23.0 in	41.0 in	1,530 lb	7 ft	4,500 lbf
50 ft	2	22.0 in	39.0 in	1,370 lb	7 ft	3,700 lbf
50 ft	3	21.0 in	37.0 in	1,220 lb	7 ft	3,000 lbf
50 ft	4	19.0 in	34.5 in	1,050 lb	7 ft	2,400 lbf
55 ft	H2	26.0 in	46.0 in	2,090 lb	7.5 ft	7,500 lbf
55 ft	H1	25.0 in	44.5 in	1,940 lb	7.5 ft	6,400 lbf
55 ft	1	23.0 in	42.5 in	1,750 lb	7.5 ft	4,500 lbf
55 ft	2	22.0 in	40.5 in	1,570 lb	7.5 ft	3,700 lbf
55 ft	3	21.0 in	38.5 in	1,400 lb	7.5 ft	3,000 lbf
60 ft	H3	27.0 in	49.0 in	2,550 lb	8 ft	8,700 lbf
60 ft	H2	26.0 in	47.5 in	2,360 lb	8 ft	7,500 lbf
60 ft	H1	25.0 in	46.0 in	2,180 lb	8 ft	6,400 lbf
60 ft	1	23.0 in	44.0 in	1,990 lb	8 ft	4,500 lbf
60 ft	2	22.0 in	42.0 in	1,780 lb	8 ft	3,700 lbf
65 ft	H3	27.0 in	50.5 in	2,860 lb	8.5 ft	8,700 lbf
65 ft	H2	26.0 in	49.0 in	2,640 lb	8.5 ft	7,500 lbf
65 ft	H1	25.0 in	47.5 in	2,440 lb	8.5 ft	6,400 lbf
65 ft	1	23.0 in	45.5 in	2,240 lb	8.5 ft	4,500 lbf
70 ft	H4	28.0 in	53.5 in	3,420 lb	9 ft	10,000 lbf
70 ft	H3	27.0 in	52.0 in	3,180 lb	9 ft	8,700 lbf
70 ft	H2	26.0 in	50.5 in	2,950 lb	9 ft	7,500 lbf
70 ft	H1	25.0 in	49.0 in	2,730 lb	9 ft	6,400 lbf
70 ft	1	23.0 in	47.0 in	2,510 lb	9 ft	4,500 lbf
75 ft	H4	28.0 in	55.0 in	3,790 lb	9.5 ft	10,000 lbf
75 ft	H3	27.0 in	53.5 in	3,530 lb	9.5 ft	8,700 lbf
75 ft	H2	26.0 in	52.0 in	3,290 lb	9.5 ft	7,500 lbf
75 ft	H1	25.0 in	50.5 in	3,050 lb	9.5 ft	6,400 lbf
80 ft	H5	29.0 in	58.0 in	4,470 lb	10 ft	11,400 lbf
80 ft	H4	28.0 in	56.5 in	4,180 lb	10 ft	10,000 lbf
80 ft	H3	27.0 in	55.0 in	3,900 lb	10 ft	8,700 lbf
80 ft	H2	26.0 in	53.5 in	3,640 lb	10 ft	7,500 lbf
80 ft	H1	25.0 in	51.5 in	3,370 lb	10 ft	6,400 lbf
85 ft	H5	29.0 in	59.0 in	4,870 lb	10.5 ft	11,400 lbf
85 ft	H4	28.0 in	57.5 in	4,560 lb	10.5 ft	10,000 lbf
85 ft	H3	27.0 in	56.0 in	4,260 lb	10.5 ft	8,700 lbf
85 ft	H2	26.0 in	54.5 in	3,990 lb	10.5 ft	7,500 lbf
90 ft	H5	29.0 in	60.0 in	5,270 lb	11 ft	11,400 lbf
90 ft	H4	28.0 in	58.5 in	4,940 lb	11 ft	10,000 lbf
90 ft	H3	27.0 in	57.0 in	4,630 lb	11 ft	8,700 lbf
95 ft	H5	29.0 in	61.0 in	5,680 lb	11 ft	11,400 lbf
95 ft	H4	28.0 in	59.5 in	5,340 lb	11 ft	10,000 lbf

Pole Material Comparison

Choosing the right pole material

Wood (CCA / Penta treated)

Default for distribution and most sub-transmission. Cheapest first cost. ~30-50 yr service life. Lighter than steel/concrete. Most common species: SYP, Douglas Fir, Western Red Cedar.

Steel (Hot-dip galvanized)

Common in fire-prone areas (CA, AZ), urban replacement, and transmission. ~50 yr service life. Higher first cost than wood. Direct-embed for distribution; base-plate for transmission.

Concrete (Spun / Reinforced)

Coastal, industrial, fire-prone. Heaviest; requires crane to set. 60+ yr service life. Common in BC, Eastern Canada, and Florida. Excellent corrosion resistance.

FRP / Composite

Helicopter-set in remote areas. Non-conductive. Very light. Excellent in coastal/swamp/wildfire zones where wood rots quickly. Premium first cost but lowest maintenance.

Authoritative Standards

Source standards

ANSI O5.1 →

Wood Poles — Specifications and Dimensions

ASCE Manual 72 →

Design of Steel Transmission Pole Structures

ASCE Manual 123 →

Prestressed Concrete Transmission Pole Structures

ASTM A475 →

Standard Specification for Zinc-Coated Steel Wire Strand (Guy)

RUS Bulletin 1728F-700 →

Specification for Wood Crossarms (USDA Rural Utilities Service)

CSA O15 →

Wood Utility Poles and Reinforcing Stubs (Canada)

ANSI C29 series →

Insulator and crossarm hardware standards

IEEE Std 691 →

Guide for Transmission Structure Foundation Design and Testing

Legal Disclaimer

The data on this page is provided for general reference and educational purposes only. Wood pole values follow ANSI O5.1 published specifications; steel, concrete, FRP, crossarm, guy strand, and anchor values are sourced from manufacturer literature and industry handbooks (ASCE Manual 72/123, ASTM A475, RUS Bulletin 1728F-700). Specifications can vary between manufacturers and may be revised over time. Anchor holding capacity in particular varies dramatically with actual site soil conditions — these values are starting points only. Enerzas makes no representation that this data is current, complete, or appropriate for any specific design, construction, or operating decision. Always reference the engineering specifications, design drawings, and applicable standards (ANSI O5.1, NESC, CSA C22.3 No. 1, IEEE 691, OSHA 1910.269) for your specific job. When in doubt, consult a licensed professional engineer or your utility\'s standards group. Enerzas assumes no liability for the use or misuse of this data.

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