Class B Wood Pilings
- CCA-treated Southern Yellow Pine for lasting marine and ground contact durability
- Intermediate sizing balances structural capacity with cost-effective project budgets
- Suitable for docks, piers, marinas, boardwalks, and foundation applications
Our Class B Wood Pilings include CCA-treated Southern Yellow Pine pilings for commercial, marine, and structural projects. This intermediate piling class is available in length ranges from under 40 feet to over 90 feet. Minimum diameters measured 3 feet from the butt are 12 inches for lengths under 55 feet and 13 inches for lengths of 55 feet and longer. Minimum tip diameters range from 8 inches for pilings under 40 feet to 5 inches for pilings over 90 feet. Treatment levels are available for different soil, freshwater, brackish water, saltwater, tidal, and marine borer exposure conditions.
Common applications for these wood pilings include residential and light commercial docks, piers, marinas, boardwalks, waterfront structures, bulkheads, retaining applications, and foundation projects. They are also used for pedestrian structures, access piers, waterfront walkways, and marina support structures. Supported installation methods include driving, drilling, and jetting, depending on project specifications and site conditions. Class B pilings occupy the intermediate classification between the larger Class A piling and the lighter-duty Class C piling, with defined minimum butt and tip diameter references based on piling length.
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Starting At $1,072.73
Class B Wood Pilings for Docks, Piers, Marine Structures, and Foundation Projects
Class B pilings are intermediate-size wood pilings used when a project needs more structural capacity than a lighter-duty piling, but does not require the largest standard Class A size. They are commonly used for docks, piers, marinas, boardwalks, waterfront structures, retaining applications, and foundation projects where the required piling class, length, and treatment level match the project design.
LED Lighting Supply provides Class B CCA-treated Southern Yellow Pine wood pilings for commercial, marine, and structural applications. Class B pilings can be a practical choice when the project requires a balance of strength, diameter, availability, and cost.
Before ordering Class B pilings, confirm the required length, minimum diameter, treatment level, embedment depth, soil conditions, water exposure, structural load, and local code requirements with the project engineer, contractor, or authority having jurisdiction.
When to Choose Class B Pilings
Class B pilings are generally selected when the project requires more support than Class C pilings, but the larger Class A piling is not required by the design. They should be chosen based on project specifications, soil conditions, exposure, and structural requirements, not simply because they are a middle option.
| Application | Why Class B May Be a Good Fit |
|---|---|
| Residential and light commercial docks | Class B pilings may provide appropriate support for docks that need stronger sizing than Class C but do not require the largest Class A diameter. |
| Piers and boardwalks | Intermediate piling size can be useful for pedestrian structures, access piers, and waterfront walkways when approved by the project design. |
| Marina support structures | Class B pilings may be used in marina applications where load, exposure, and treatment requirements fall between lighter-duty and heavy-duty structural needs. |
| Foundation applications | Class B pilings may be selected where soil conditions, structural loads, and embedment requirements call for an intermediate timber pile. |
| Bulkheads and retaining applications | Intermediate diameter pilings may be used where lateral loads, soil pressure, and site conditions are within the project design limits. |
| Freshwater and coastal projects | Class B pilings may be used in freshwater, brackish, or saltwater applications when the correct treatment level is specified for the exposure. |
Class B Piling Size Reference
Class B wood pilings are defined by minimum diameter requirements based on piling length. Diameter is commonly measured 3 feet from the butt, with a separate minimum tip diameter requirement. Final sizing should always be verified against the project specification and applicable standards.
| Class B Length Range | Minimum Diameter Reference |
|---|---|
| Under 40 ft | 12″ minimum diameter 3 ft from butt; 8″ minimum tip diameter. |
| 40 ft to 54 ft | 12″ minimum diameter 3 ft from butt; 7″ minimum tip diameter. |
| 55 ft to 74 ft | 13″ minimum diameter 3 ft from butt; 7″ minimum tip diameter. |
| 75 ft to 90 ft | 13″ minimum diameter 3 ft from butt; 6″ minimum tip diameter. |
| Over 90 ft | 13″ minimum diameter 3 ft from butt; 5″ minimum tip diameter. |
Class B vs. Class A and Class C Pilings
Class B pilings sit between Class A and Class C in the wood piling classification system. They are commonly used when the project does not require the largest Class A pile but should not be reduced to Class C. The correct choice depends on the engineer’s design, required diameter, piling length, soil conditions, and exposure environment.
| Piling Class | General Difference |
|---|---|
| Class A Pilings | Largest standard wood piling class for heavier-duty commercial, marine, pier, and foundation applications where higher capacity or larger diameter is required. |
| Class B Pilings | Intermediate class for projects that need more support than Class C but do not require the largest Class A piling size. |
| Class C Pilings | Economical class for lighter-duty docks, piers, retaining applications, and lower-load projects when approved for the design. |
Key Factors to Confirm Before Ordering Class B Pilings
Class B piling selection should be based on the project design, not assumptions. Confirm the required size, treatment, embedment, and installation method before ordering.
| Factor | What to Review |
|---|---|
| Required length | Confirm total piling length, including the portion above grade or above water and the required embedment below grade or below the mudline. |
| Minimum diameter | Verify the required diameter 3 feet from the butt and the minimum tip diameter for the specified length range. |
| Structural load | Review vertical loads, lateral loads, live loads, impact, wave action, soil movement, and structure type before ordering. |
| Soil conditions | Sand, clay, rock, soft soil, fill, and mixed soils can affect pile length, installation method, and embedment depth. |
| Water exposure | Freshwater, brackish water, saltwater, tidal exposure, and marine borer risk can affect treatment requirements and material suitability. |
| Treatment level | Confirm the required CCA treatment retention for the application. Foundation, freshwater, saltwater, and marine borer zones may require different treatment levels. |
| Installation method | Driving, drilling, and jetting may each be appropriate depending on soil type, site access, nearby structures, and contractor equipment. |
| Project specifications | Review drawings, engineering notes, ASTM requirements, local code, and project documents before substituting Class A, Class B, or Class C pilings. |
Class B Pilings for Dock and Marine Use
Class B pilings are often used in dock, pier, and waterfront projects where the design calls for intermediate piling size. They may be appropriate for residential docks, light commercial docks, access piers, boardwalks, marina support areas, and other marine structures when the class, length, treatment, and embedment depth match the project requirements.
For marine piling applications, treatment level is just as important as piling class. A Class B piling intended for freshwater use may not be suitable for brackish water, saltwater, or marine borer exposure. Confirm the required treatment retention before ordering.
Benefits of Class B Wood Pilings
| Benefit | Why It Matters |
|---|---|
| Intermediate standard class | Class B pilings provide a middle option between larger Class A pilings and lighter-duty Class C pilings. |
| Balanced support and cost | Class B can be a practical choice when the project needs more support than Class C without requiring the largest standard piling class. |
| Dock and pier suitability | Class B pilings are commonly used for docks, piers, boardwalks, marina areas, and waterfront structures when properly specified. |
| Treated wood performance | CCA-treated Southern Yellow Pine can provide durable performance when the treatment level matches the exposure environment. |
| Clear sizing reference | Class B sizing gives contractors, engineers, and buyers a defined minimum diameter reference for planning and ordering. |
Common Mistakes When Selecting Class B Pilings
Class B pilings are often selected for practical, cost-conscious projects, but they still need to match the required load, exposure, and installation conditions.
- Assuming Class B is always the safe middle choice: Class B should be selected only when it matches the project design and required load conditions.
- Downgrading from Class A without approval: Do not substitute Class B for Class A when the drawings, engineer, or project specification requires Class A.
- Upgrading from Class C without checking the design: A larger class may not solve treatment, embedment, soil, or installation issues.
- Ordering by visible height only: Piling length must include the portion installed below grade or below the mudline.
- Using the wrong treatment level: A Class B piling for standard soil or freshwater exposure may not be suitable for brackish water, saltwater, or marine borer zones.
- Ignoring lateral loads and impact: Docks, piers, marinas, and waterfront structures may experience boat contact, wave action, current, storm forces, and soil movement.
- Overlooking soil conditions: Soft soil, rock, clay, sand, and fill can affect installation method and required embedment depth.
Get Help Selecting Class B Pilings
LED Lighting Supply can help review Class B piling options for docks, piers, marinas, waterfront structures, foundations, boardwalks, retaining applications, and other commercial or structural projects. We can help confirm available lengths, treatment options, quantity needs, delivery requirements, and project details before you order.
Request a Class B piling quote and our Product Specialists can help review your application, required length, treatment level, quantity, and project requirements.
Class B Wood Pilings FAQs
How Do I Know Whether Class B Pilings Are Right For My Project?
Class B pilings are appropriate when the design requires more support than Class C but does not require the larger Class A size. Confirm the required load, piling length, diameter, soil conditions, exposure, treatment level, and embedment depth before selecting them.
What Diameter Is Required For A Class B Wood Piling?
Class B minimum diameter requirements vary by piling length, with butt diameters measured 3 feet from the butt and separate minimum tip diameters. For example, piles under 40 feet require a 12-inch minimum butt diameter and 8-inch minimum tip diameter, while piles over 90 feet require a 13-inch minimum butt diameter and 5-inch minimum tip diameter.
Can Class B Pilings Be Used In Saltwater Or Marine Applications?
Class B pilings may be used in freshwater, brackish, or saltwater projects when the correct CCA treatment level is specified for the exposure. A piling intended for freshwater use may not be suitable for saltwater, tidal exposure, or marine borer zones.
What Should I Confirm Before Ordering Class B Pilings?
Confirm the total required length, including above-water or above-grade height and required embedment, along with minimum diameter, treatment level, structural loads, soil conditions, water exposure, and installation method. Project drawings, engineering notes, ASTM requirements, local code, and project documents should also be reviewed before changing piling classes.
Can I Substitute Class B Pilings For Class A Or Class C Pilings?
Class B pilings should not replace Class A or Class C pilings unless the substitution matches the project design and requirements. A larger or smaller piling class does not automatically address treatment, embedment, soil, installation, or load conditions.