LVL Beam Span Tables: A Guide to Choosing the Right Size

When it comes to building a structure, choosing the right size of LVL (Laminated Veneer Lumber) beam is crucial for ensuring stability and strength. One of the most important factors to consider when selecting an LVL beam is its span. In this article, we will explore how to determine the best size of LVL beam for a 16-foot span.

As the span increases, the minimum bearing length also changes accordingly. For example, a 11-17/8-inch beam should have a minimum bearing length of 3.8 inches at the ends and 9.4 inches on intermediate posts, while a 14-inch beam needs a minimum bearing length of 4.7 inches and 11.8 inches.

For a specific LVL beam, such as a 7-inch wide by 16 to 24 inches deep beam, the minimum bearing length is 5.5 inches at the ends and 13.8 inches on intermediate posts. It's essential to note that these values vary depending on the width and depth of the beam.

When using wider or thicker LVL-engineered beams, the minimum bearing length also increases. However, for spans of 9 feet or greater, the minimum bearing length decreases to 1.5 inches at the ends, while for spans of 8 feet or less, it reduces to 1.8 inches at the ends and 4.6 inches on intermediate supports.

It's important to consult the manufacturer's specifications or structural drawings for accurate information. For example, a 7-1/4-inch deep and 1-3/4-inch wide LVL wood beam spanning 7 feet or less has a minimum bearing length of 2 inches at the ends and 5 inches on intermediate supports.

In general, the depth and span of the beam influence the minimum bearing length, emphasizing the need for accuracy. The depth of an LVL beam should be equal to the span in inches divided by 20. Based on this guideline, choose the appropriate beam width and depth required for the span.

Manufacturers often offer span charts based on various construction criteria, such as one or two stories, beam span, carrying span, beam usage, placement, and live, dead, and/or total loads. It's crucial to refer to these charts when selecting an LVL beam to ensure that it meets the specific requirements of your project.

In conclusion, choosing the right size of LVL beam for a 16-foot span requires careful consideration of several factors, including the minimum bearing length, depth, and width of the beam. By consulting manufacturer's specifications and structural drawings, as well as using general guidelines and span charts, you can ensure that your LVL beam is strong and stable enough to support the loads it will be subjected to.

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