How to Use an 11 7/8 LVL Span Chart?

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Understanding LVL Span Charts

Engineered wood products like laminated veneer lumber (LVL) are widely used in construction. The LVL span chart provides essential information on the allowable spans for different loading conditions. This helps ensure structural integrity and safety.

Step 1: Identify Your Load Conditions

Before using the LVL span chart, determine the type of load your beam will carry. There are generally two types:

• Live Load: This includes temporary loads such as furniture, people, and snow.
• Dead Load: This includes permanent loads like the weight of the beam, flooring, and roofing.

Make sure to quantify these loads in terms of pounds per square foot (psf).

Step 2: Determine the Beam Size

Next, identify the size of the LVL beam you intend to use. Common sizes include 1.75" x 11.875", but check local building codes as they may vary. The span chart will provide information based on these dimensions.

Step 3: Consult the LVL Span Chart

Once you have the necessary information, locate an appropriate LVL span chart. These charts are often found in manufacturer catalogs or on engineering websites. Look for the section that matches your LVL size.

Step 4: Cross-Reference Load with Span

On the chart, find the corresponding values based on your earlier calculations:

• Locate your beam size on the vertical axis.
• Read across to find the allowable spans for the specified loading conditions, looking for your calculated live and dead loads.

If your load exceeds the values listed in the chart, you’ll need to select a larger beam or reduce the span.

Step 5: Verify with Local Building Codes

Building codes can vary by jurisdiction. Always verify the allowed spans with local regulations. In some cases, additional factors like seismic or wind loads may affect the decision. It’s wise to consult with a structural engineer for safety.

Step 6: Document Your Findings

After determining the appropriate LVL size and span, document your findings. Include the load calculations, the selected LVL size, and the maximum allowable spans as per the chart. This information may be needed for building permits or inspections.

Step 7: Plan Your Installation

Finally, with all this information, plan for installation. Ensure that you have the necessary materials and tools ready. If you're uncertain about the installation process, consider hiring a professional contractor.

Conclusion

Using an LVL span chart is a straightforward yet crucial process in ensuring safe construction. Follow these steps carefully to make informed decisions about your building projects.

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