A 4x8 beam can span a maximum of 84 feet. Beams that are wider than this will have to be divided into multiple pieces to span the desired distance. When measuring the width of your beam, make sure to account for any supports that will need to be placed along the way.
What is the maximum span for a 4x8 beam?
A 4x8 beam can span a maximum of 8 feet.
How much weight can a 4x8 beam hold?
A 4x8 beam can span a distance of up to 8 feet. The weight capacity of a 4x8 beam is 400 pounds.
What size beams do I need to span 8 feet?
A 4x8 beam can span 8 feet. beams of this size are typically used in construction to span large distances. If you need a beam that spans a shorter distance, you will need to find a different beam size. For example, if you need a beam that spans 3 feet, then you would need a 3x6 beam.
What is the longest span possible for my 4x8 beam?
A 4x8 beam can span a maximum of 96 feet. This is based on the fact that the center of gravity for a beam is located at its middle. So, if you make the beam's width equal to its height, then it will have a span of 48 feet. If you want to increase the span, then you'll need to make the beam's width greater than its height. However, keep in mind that increasing the width also increases the weight and structural complexity of your beam. So, if you're looking to increase the span beyond 96 feet, then you'll need to consider other factors such as weight and cost.
Can I use two 2x4s to make a beam that spans 8 feet?
A 4x8 beam can span a maximum of 8 feet. Two 2x4s can be used to make the beam, but it will not be as strong. The two 2x4s should be spaced at least 2 feet apart to create the strongest beam possible.
If I use two 2x4s, how far can they span without support in the middle?
A 4x8 beam can span a maximum of 48 inches without support in the middle. Two 2x4s can span a maximum of 24 inches without support in the middle.
My floor joists are 16 on center and I want to use 2x8 lumber, how long of a piece can I get away with using before having to add another supportbeam in the middle of the run under the floor joists?
A 4x8 beam can span a distance of up to 48 inches on center. If your floor joists are 16 on center, you can get away with using a 2x8 piece that is 24 inches long without needing to add another supportbeam in the middle of the run under the floor joists.
What size lumber should I use for my 8 foot span if it needs to hold 100 lbs/sqft 10' off of the ground (for storage)?
A 4x8 beam can span a distance of up to 10 feet off the ground. The size of lumber you need will depend on the weight it needs to support and the spacing between beams. For example, if your beams are spaced 2 feet apart, then you would need lumber that is at least 2 inches thick. If your beams are spaced 3 feet apart, then you would need lumber that is at least 3 inches thick.