What Size Beam Do I Need To Span 20 Feet?
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When it comes to building a strong and sturdy home, you must ensure that you have the right beam in place.
But, with so many different sizes and types of beams available on the market, how do you know which one is best for your needs?
Below, we will explore what size beam do you need to span 20 feet.
What Size Beam Do I Need To Span 20 Feet?
If you are looking to span 20 feet with your beam, then you will need a beam that is at least 20 feet long.
However, it is always best to err on the side of caution and go with a beam that is a few feet longer than what you need.
For a 20-foot span, the size of the wood beam should be 2×14 placed at 16″ apart from the center used for residential buildings or construction in which the depth of section of the beam is 350mm (14′), and the width of the beam is 50 mm or 2″.
How Do You Calculate The Beam Size?
If you want to calculate the beam size, then first measure the width of the beam and multiply it by the depth of the beam.
For example, if your beam is 2 feet wide and 4 feet deep, then your beam size would be 8 square feet.
It would be best if you kept in mind that the actual size of the beam may be different than what is listed on the beam chart.
So, it would be best to call a professional to purchase the best beam for you.
What Are The Different Types Of Beam Structures?
When it comes to the different types of beam structures, there are a few primary types of beams used in construction and engineering.
These beams are classified depending on their length, equilibrium, and cross-sectional characteristics.
They include:
Continuous Beams
These beams are supported at multiple points along their length and are able to carry heavy loads.
Also, these Beams support as they have a good amount of stiffness.
Supports in the form of laths or plates are used primarily between and beneath the beams.
Continuous beams are assumed to be more efficient than other beam types when it comes to cost.
Simply Supported Beams
Also called beam-ends, these types of beams are supported at each end by separate support. Along the length of the beam, the weight is equally dispersed.
Simply supported beams are used in construction when weight needs to be transferred from one point to another.
So, while they are an efficient option, they can’t carry as much weight as a continuous beam.
Cantilever Beams
These beams are supported at one end and have the load applied to the other end. The unsupported end is free to rotate and deflect under the force of the load.
Cantilever beams are used in construction when there is a need to cantilever or extend beyond the support.
These beams are also used in trusses, girders, and bridge construction.
Fixed Beams
Fixed beams are similar to cantilever beams in that they are supported at one end and have the load applied to the other.
However, unlike cantilever beams, the unsupported end of fixed beams is prevented from rotating or deflecting.
This makes them ideal for construction projects where there is a need for extra stability, such as in buildings or bridges.
Besides, Fixed beams are also used to create bracing in trusses and girders.
Rolled Beams
Also called I-beams or H-beams, rolled beams are characterized by their tapered flanges that offer extra strength and support.
These beams are used in construction projects where there is a need for added strength and stability, such as in buildings or bridges.
Overhanging Beams
Overhanging beams are the same as cantilever beams, they are supported at one end and have the load applied to the other.
However, this beam unsupported end of overhanging beams extends beyond the support.
Also, overhanging beams are best for construction projects where there is a need to cantilever or extend beyond the support.
These beams are also used in trusses, girders, and bridge construction.
What Thing To Consider To Selecting The Right Beam?
When it comes to choosing the right beam for your needs, there are a few things that you need to keep in mind.
Below we will go over what those factors are so that you can make the best decision for your project.
Beam Size, Span, Load
The size of the beam will depend on a few things, such as the beam’s span and the load it will carry.
First, you need to calculate the size of the beam. To calculate the size of the beam, you can follow the above guidelines.
Besides, the span of the beam is the distance between the two supports that the beam will be resting on.
Because of its length, the span of the beam will have an effect on its size.
On the other hand, the load is the weight that the beam will be carrying. The heavier the load, the bigger the beam.
Beam Shape
The shape is one of the most important things to consider when choosing a beam.
The shape of the beam will affect its strength, stiffness, and weight. It is crucial to select a beam that has the right shape for your needs.
You can find several types of beam shapes in the market.
But the most common shapes are rectangular, T-shaped, and I-shaped beams; pick the right shape for your needs.
Solid Wood Beam
A solid wood beam is a beam that is made entirely out of wood. These beams are strong and stiff, but they are also very heavy.
Also, solid wood beams are often used in construction projects where weight is not a concern, such as in bridges or buildings.
So, you can pick that one for your project.
Salvaged Wood Beam
The salvaged wood beam is a beam that is made out of recycled or reclaimed wood.
These beams are usually cheaper than new ones but may not be as strong.
Besides, salvaged wood beams are often used in construction projects where cost is a concern, such as in fences or sheds.
As you can see, there are several things you need to consider when you want to buy beams.
So, before purchasing beams, you need to keep in mind all of these things.
FAQs
Are LVL Beams Expensive?
No, LVL beams are not expensive. In fact, they can often be more cost effective than traditional lumber because they are stronger and last longer.
Also, this bema is affordable and more robust than wood beams. The buying cost of these beams is $3 to $12 per linear foot on average.
How Far Can A 4 Ply 2×12 Beam Span?
A 2×12 beam can span a maximum of 13′. The wood type will also factor in how far the beam can span.
For example, a 4-ply 2×12 Fir beam can span up to 21 feet while a 4-ply 2×12 Hemlock beam can span up to 24 feet.
Can A 2×10 Span 20 Feet?
Yes, a 2×10 can span 20 feet. This is often done in commercial construction when the 2x10s are spaced 16″ in the center and used as floor joists.
The 2x10s can support a significant amount of weight when used in this manner.
Conclusion
We hope this article has helped you understand the different types of beams and what to consider when selecting the right beam for your needs.
Also, you’ve been able to figure out what size beam you need to span 20 feet.
