Class A Wood Pilings
- Larger traditional class for heavy-duty marine and foundation projects
- CCA-treated Southern Yellow Pine with treatment options available
- Selection support for length, diameter, and treatment requirements
Our Class A Wood Pilings include CCA-treated Southern Yellow Pine pilings for commercial, marine, and structural projects. These pilings are the largest standard wood piling class, with a 14-inch minimum diameter measured 3 feet from the butt and minimum tip diameters that vary by length.
Class A wood pilings are commonly used for commercial piers, larger docks, marinas, waterfront structures, foundation projects, bridges, boardwalks, and coastal sites.
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Starting At $1,090.91
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Starting At $1,254.55
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Starting At $1,136.36
Class A Piling Size Reference
ASTM D25 includes a traditional Class A reference schedule for round timber piles. For Southern Pine and Douglas Fir Class A piles, traditional reference uses a minimum diameter of 14 inches measured 3 feet from the butt, together with minimum tip diameters that vary by broad pile-length ranges.
The table below shows the traditional ASTM D25 Class A reference schedule. It should not be confused with ASTM D25's separate dimensional-selection tables, which specify minimum butt or tip circumference at more granular pile lengths. Those detailed tables can produce different dimensional values because they are used for direct dimensional specification rather than the traditional Class A designation.
| Class A Length Range | Traditional ASTM D25 Class A Size Reference |
|---|---|
| Under 40 ft | 14" minimum diameter 3 ft from butt; 9" minimum tip diameter. |
| 40 ft to 54 ft | 14" minimum diameter 3 ft from butt; 9" minimum tip diameter. |
| 55 ft to 74 ft | 14" minimum diameter 3 ft from butt; 8" minimum tip diameter. |
| 75 ft to 90 ft | 14" minimum diameter 3 ft from butt; 7" minimum tip diameter. |
| Over 90 ft | 14" minimum diameter 3 ft from butt; 6" minimum tip diameter. |
Marine-treatment note: CCA treatment alone does not establish suitability for every marine application. For saltwater exposure, specify the applicable AWPA Use Category and preservative retention for the project location and exposure severity. Marine requirements can vary by saltwater zone and project specification; verify the treatment certification, retention, and applicable project or permitting requirements before ordering.
Important: These values are the traditional Class A reference dimensions. They are not the same as the more detailed ASTM D25 butt- and tip-circumference tables used when piles are specified directly by dimensional requirements. For engineered projects, the applicable ASTM edition and the dimensions shown in the project plans and specifications should control.
Class A Wood Pilings FAQs
What Is The Traditional ASTM D25 Class A Reference For Southern Pine And Douglas Fir Piles?
The traditional ASTM D25 Class A reference for Southern Pine and Douglas Fir piles uses a minimum 14-inch diameter measured 3 feet from the butt, with minimum tip diameter varying by pile-length range.
What Tip Diameter Does A Class A Pile Need Under 55 Feet Long?
Traditional ASTM D25 Class A references list a 9-inch minimum tip diameter for piles under 40 feet and for piles from 40 feet to 54 feet long.
What Tip Diameter Does A Class A Pile Need From 55 To 74 Feet Long?
Traditional ASTM D25 Class A references list an 8-inch minimum tip diameter for piles from 55 feet to 74 feet long, with a 14-inch minimum diameter measured 3 feet from the butt.
What Tip Diameter Does A Class A Pile Need From 75 To 90 Feet Long?
Traditional ASTM D25 Class A references list a 7-inch minimum tip diameter for piles from 75 feet to 90 feet long, with a 14-inch minimum diameter measured 3 feet from the butt.
What Tip Diameter Does A Class A Pile Need Over 90 Feet Long?
Traditional ASTM D25 Class A references list a 6-inch minimum tip diameter for piles over 90 feet long, with a 14-inch minimum diameter measured 3 feet from the butt.
Are Traditional Class A Dimensions The Same As ASTM D25 Dimensional-Selection Tables?
No. ASTM D25's separate dimensional-selection tables specify minimum butt or tip circumference at more granular pile lengths and can produce different dimensional values because they are used for direct dimensional specification rather than the traditional Class A designation.
Which Requirements Should Control For An Engineered Pile Project?
For engineered projects, the applicable ASTM edition and the dimensions shown in the project plans and specifications should control.
