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Lally columns are named after their founder, John Lally, who owned a construction company in the 1800s. He invented the columns as a means of providing temporary support for beams and rafters in homes his company was renovating. The original Lally columns were also made of steel, although the inventory used a thicker gauge metal, which provided additional support for larger projects and long-term structural solutions.

Beams made out of traditional lumber can often only span 8 to 12 feet without requiring vertical supports, so if you want a wider opening to create a more open floor plan, you might need an LVL beam. LVL beams can span up to around 30 feet without the need for load-bearing walls or vertical supports underneath, making them a better option for keeping your home as open and airy as possible.

You should pick steel for your new support beam for a few reasons. While steel is more expensive than other materials, such as laminated veneer lumber or glulam, it offers the following benefits:

• Fire-resistant

• Unaffected by pests

• Longer-lasting

• Stronger against water damage (when galvanized against rust)

Some states require welders to be licensed and certified, while others don’t. However, it’s always a good idea to hire a licensed welder, regardless of requirements in your area, especially if you need welding for structural components of your home or gas lines. Licensed welders have gone through training and testing to prove their skills, so they’re less likely to make a mistake that could be detrimental to your home. Use Angi’s state licensing tool to determine whether your potential hire has a welding license.