LVL Span Tables: Understanding the Benefits and Considerations

When it comes to building a deck or structure, choosing the right framing material is crucial. One option gaining popularity is LVL (Laminated Veneer Lumber), which offers superior strength, durability, and versatility compared to traditional lumber. In this article, we'll delve into the benefits of using treated LVL, its costs, and how to determine the maximum spans for joists and rafters.

Cost and Benefits

Upgrading to treated LVL can cost about $2-3 more per square foot than traditional decking materials. However, treated LVL is stronger and may replace larger profile treated lumber. According to Pacific Wood Tech, their proprietary Tru-Core technology ensures consistent, dry boards with a 25-year transferable warranty.

Span Tables: A Crucial Consideration

Before designing wood structures, it's essential to consult local building code officials to determine the design loads for your area. The American Wood Council website provides span tables and calculators for joists and rafters, allowing you to calculate maximum spans based on species and quality of lumber.

Designing with LVL

When using LVL framing lumber, keep in mind that it's super strong, straight, and works like wood. However, it's crucial to consider wind and seismic conditions, as well as snow loads, when designing structures for specific regions. Breaking up long spans of rafters by installing purlins and bracing can help distribute load more efficiently.

Choosing the Right Lumber

When selecting lumber, consider the number grade material (1 or 2) and its availability in your area. While #1 grade material may be more expensive, using fewer or smaller #1 grade joists or rafters could ultimately save you money. The lengths and sizes of joists vary depending on species and quality, so it's essential to consult the American Wood Council website for specific span tables.

In conclusion, treated LVL offers a cost-effective solution with superior strength and durability compared to traditional lumber. By understanding the benefits and considerations of using LVL span tables, you can design structures that meet local building codes and withstand various environmental conditions. Whether you're building a deck or larger structure, considering the factors outlined in this article will help ensure a safe and successful project.

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