20 to 25 Foot Pilings

20-25 Foot Wood and Fiberglass Pilings

20-25 foot pilings are commonly used for smaller dock, pier, bulkhead, boardwalk, retaining, and light foundation projects where shorter pile lengths are appropriate for the soil conditions, water depth, embedment requirements, and structural design. This length range may be a good fit for residential docks, small marina sections, shoreline structures, pedestrian access areas, and other projects where the required installed depth does not justify a longer piling.

LED Lighting Supply offers wood and fiberglass piling options for commercial, marine, and structural applications. CCA-treated Southern Yellow Pine wood pilings are often selected when a cost-effective, familiar material is appropriate for the exposure and load requirements. Fiberglass or composite pilings may be considered where saltwater, repeated wet/dry exposure, rot, corrosion, marine organisms, or long service life are major concerns.

When 20-25 Foot Pilings Make Sense

This length range is typically considered when the project requires moderate embedment depth and a shorter exposed height above grade, mudline, or waterline. Common uses include smaller docks, light-duty piers, short boardwalk sections, minor shoreline structures, retaining applications, and foundation support where the engineer or contractor has confirmed that a 20-25 foot piling is suitable.

Do not select piling length based only on the visible height needed above water or grade. The total length must include the required embedment depth below the mudline, soil surface, or bearing layer. Soil type, water movement, lateral loads, structure type, and local code requirements can all affect the final length.

Wood vs Fiberglass Pilings in This Length Range

Wood pilings are often used where treated Southern Yellow Pine is approved for the application and provides the right balance of cost, strength, availability, and installation familiarity. They are commonly used for docks, piers, boardwalks, bulkheads, and foundation support when the treatment level matches the exposure.

Fiberglass and composite pilings are often used where long-term resistance to moisture, saltwater, rot, corrosion, chemicals, and marine organisms is more important than the lowest upfront material cost. They may be a better fit for coastal, tidal, marina, or harsh waterfront environments when properly specified for the project.

What to Confirm Before Ordering

• Piling length: Confirm that 20-25 feet is enough for both exposed height and required embedment depth.
• Piling material: Choose wood, fiberglass, or composite based on exposure, service life, budget, and project requirements.
• Piling class or size: Verify the required class, diameter, wall thickness, or structural rating before ordering.
• Treatment level: For wood pilings, confirm the correct treatment retention for soil, freshwater, brackish water, saltwater, or marine borer exposure.
• Soil conditions: Sand, clay, fill, soft soils, rock, and mixed conditions can affect embedment depth and installation method.
• Loads and exposure: Review vertical loads, lateral loads, wave action, tidal movement, impact, storm exposure, and long-term water contact.
• Installation method: Driving, drilling, or jetting should be selected based on soil conditions, site access, equipment, and project requirements.

Common Applications

• Small docks and piers: 20-25 foot pilings may be used for shorter dock or pier structures where soil conditions and water depth do not require longer piles.
• Boardwalks and pedestrian access: This length range can support short boardwalk sections, access paths, and light structural areas when approved for the design.
• Bulkheads and retaining applications: Shorter pilings may be used in some retaining or shoreline applications, depending on lateral loads, soil movement, drainage, and water pressure.
• Light foundation support: Some foundation projects may use 20-25 foot pilings where the required bearing depth and structural load are appropriate for this length range.

Important Selection Notes

20-25 foot pilings should be selected based on the project design, not by length alone. A shorter piling can be cost-effective when it fits the soil, load, and exposure requirements, but undersizing the length, class, treatment level, or material can create installation problems or reduce service life.

Before ordering, confirm the final piling specification with the project engineer, contractor, or authority having jurisdiction. LED Lighting Supply can help review wood and fiberglass piling options, quantities, delivery needs, and project requirements before purchase.