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The Question & Answer (Q&A) Knowledge Managenet

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Table of Contents

- How do you size steel beams?
- How do you identify a steel beam?
- Is H beam stronger than I Beam?
- Is 800 a combination load?
- What is factored load?
- How do you find the factored load?
- What is the service load?
- How do you transfer a slab load to a beam?
- How do you find the maximum load on a beam?
- How do you find the maximum load?

To calculate the necessary depth of a **beam**, divide the span (in inches) by 20. For example, a 25′ span would be 25×12 / 20 = 15”. The width of this **beam** would be between 1/3 and ½ the depth.

Without the help of mill markings to **identify** a given **steel beam**, you should measure the height (A), the flange width (B), the flange thickness (C) and the web thickness (D).

An **H beam** has a thicker central web, which means that it is generally **stronger**. An I **beam** generally has a thinner central web, which means that it is often not able to receive as much force as an **H beam**.

As per limit state of serviceability **Load combinations IS 800**-2007 Table 4 along with 33% increase in permissible stress as per **IS 800** -2007 clause 11.

A **factored load** is a **load** multiplied by a certain **factor** designated by codes of practice to drermine the strength of a structural members such as reinforced concrete. Unfactored **load** is a service **load** to determine the working stress of a structural concrete, steel, or wood member.

To get the maximum **factored load**, use Pu = 1.

**Service loads** The maximum intensity of **load** expected during the life span of the structure is known as **service load**. It depends upon a certain probability of occurence. No additional factor of safety or over **load** factor is included in the **service load**.

Two-way **Slab** The **slab** is commonly divided into trapezoidal and triangular areas by drawing lines from each corner of the rectangle at 45 degrees. The **beam’s** distributed **load** is computed by multiplying the segment area (trapezoidal or triangular area) by the **slab’s** unit **load** divided by the **beam** length.

How can I **calculate** the **load capacity** of a structural **beam**? Yield strength times the section modulus divided by 1.

Then I **find** the **maximum load** from the equation P = F/A where P is the stress, F is the **load** and A is the cross-sectional area of the pillar. Other cases, such as the bending of a beam, are much more complicated.