All About a i beam weight per foot

All About a i beam weight per foot

The i beam, also known as an H beam, is a widely used structural steel shape in construction and engineering projects. Its unique shape and design make it ideal for bearing heavy loads and providing structural support. One crucial aspect of the i beam is its weight per foot, which is a crucial factor in determining its suitability for various applications. In this article, we will dive into everything you need to know about the i beam weight per foot, including its calculation, factors affecting it, and its importance in construction projects. Whether you are a construction professional or simply curious about this versatile steel beam, this article will provide you with a comprehensive understanding of its weight per foot.

How much does a i beam weight per foot

How much does a i beam weight per foot

A beam is a structural element that is used to support loads and resist bending. I-beams, also known as H-beams or universal beams, are a very common form of beam used in construction. They are characterized by their distinctive shape, which resembles the letter “I”. These beams are widely used in the construction of buildings, bridges, and other structures due to their high strength-to-weight ratio.

One of the key factors in determining the suitability of a beam for a particular application is its weight per foot. This is because the weight of a beam directly affects its load carrying capacity and the ease with which it can be installed and transported. In this article, we will discuss how much a typical I-beam weighs per foot.

The weight per foot of an I-beam is primarily influenced by its dimensions. These dimensions include the flange width, flange thickness, web thickness, and overall height. Each standard size of I-beam has a specific weight per foot, which can be easily calculated using the following formula:

Weight per foot = (flange width x flange thickness x web thickness) x 3.8

For example, a W10x49 I-beam has a weight per foot of (10 x 4 x 0.433) x 3.8 = 64.082 pounds. This means that every linear foot of this I-beam would weigh approximately 64 pounds. Similarly, a W21x62 I-beam would have a weight per foot of (21 x 6.5 x 0.45) x 3.8 = 793.53 pounds, making it significantly heavier than the W10x49 I-beam.

In the United States, the weight of an I-beam is expressed in pounds per linear foot. In other countries, such as Canada and Europe, the weight is expressed in kilograms per meter. To convert from pounds per foot to kilograms per meter, multiply the weight per foot by 1.48818.

It is worth noting that the steel used to manufacture I-beams comes in different grades, each with its own weight and strength properties. A higher-grade steel will have a higher weight per foot, but it will also have a higher load carrying capacity.

Another important factor to consider is the length of the I-beam. The longer the beam, the heavier it will be. This is because the material used to manufacture the beam is distributed over a longer length, resulting in a higher weight per foot. Therefore, it is important to factor in the length of the beam when calculating the total weight of a structure.

In conclusion, the weight per foot of an I-beam varies depending on its dimensions and the grade of steel used. When selecting an I-beam for a construction project, it is crucial to consider the weight per foot, as it directly affects the structural integrity and overall cost of the project.

How much does a steel beam weigh

How much does a steel beam weigh

A steel beam is a structural element used in construction projects to support heavy loads such as the weight of a building or bridge. The weight of a steel beam is an important factor to consider in the design and construction process, as it affects the overall stability and integrity of the structure.

The weight of a steel beam varies depending on its size, shape, and the type of steel used. In general, the heavier and larger the beam, the more weight it will have. The following are some common types of steel beams and their corresponding weights:

1. Wide flange beams: These beams have a wide flange or base, and they are available in various sizes and weights. The weight of a wide flange steel beam ranges from 17 pounds per linear foot (plf) for a W4x13 beam to 260 plf for a W44x335 beam.

2. I-Beams or H-Beams: These beams have a cross-section shape resembling the letter “I” or “H”. They are widely used in construction and have weights starting from 6 plf for a 3”x5.7” beam to 175 plf for a 24”x121” beam.

3. Channels or C-Beams: These beams have a “C” shape and are often used as support or framing elements. The weight of a C-beam can range from 3 plf for a 3”x4.1” beam to 115 plf for a 15”x50” beam.

4. Angle Beams: These beams have a “L” shape and are commonly used in framing and supports. The weight of an angle beam can vary from 1 plf for a 1”x1”x1/8” beam to 12 plf for a 6”x4”x3/8” beam.

The weight of a steel beam is also affected by the grade of steel used. High-strength steels such as ASTM A992 or ASTM A572 have a higher density and therefore weigh more per unit length compared to lower grade steels.

To calculate the weight of a steel beam, the following formula can be used:

Weight (lbs) = (Width (in.) x Depth (in.) x Length (ft.) x Weight (lbs/in³)) / 12

For example, let’s say we have an ASTM A992 wide flange beam with the dimensions of W18x50, which has a width of 18 inches, a depth of 6.5 inches, and a length of 30 feet. The weight of this beam can be calculated as follows:

Weight (lbs) = (18 x 6.5 x 30 x 0.2836) / 12 = 773 lbs

It is important to keep in mind that the weight of a steel beam may also vary slightly due to manufacturing tolerances and surface finishes.

In conclusion, the weight of a steel beam is influenced by various factors such as its size, shape, and grade of steel used. Accurately determining the weight of a steel beam is essential for proper structural design and construction. Therefore, it is crucial to consult with a professional engineer for accurate and precise calculations for each specific project.


In conclusion, understanding the concept of an I beam and its weight per foot can be beneficial for various construction and engineering projects. The weight per foot of an I beam plays a crucial role in determining its load-bearing capacity and overall strength. By calculating the weight per foot accurately, engineers and architects can ensure the structural integrity and safety of a building or structure. Moreover, knowing the weight per foot of an I beam can also aid in cost estimation and material selection. Therefore, it is essential to have a thorough understanding of the factors that affect an I beam’s weight per foot and how it ultimately contributes to the overall design and functionality of a construction project.


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