How to calculate the effective length of the continuous beam? (Part-2) / Calculating the effective span of a continuous beam.

 

 Part-1   👈 Back      

Example -2:

Let us calculate the effective span of the continuous beam as shown below.

Given data:

Beam depth = 450mm.

Support width of column = 450mm.

Clear span = 4500mm.

Calculation:

Let us check condition-1 of the IS-456 code.

         [1/12 × clear span] 

        = [1/12 ×4500mm.]

        = 375mm. < 450mm.

Here, the width of the column support is wider than 1/12th of the clear span of the beam.

According to IS-456:2000, the effective span (length) of a continuous beam is defined as given below.

                              

The given continuous beam has one end fixed & the other continuous.

So, as per IS-456, the effective span shall be equal to the clear span between the supports.

The effective span = clear span = 4500mm.

Example-3:

Let us observe the continuous beam supported over bearings as shown below.

According to IS-456:2000, the effective span for roller support shall always be the distance between the center of the bearings.

Here, effective span = c/c distance between the roller = 5000mm.

Continued 👉 Part-3👇

👀. How to calculate the effective span of the RCC continuous beam? (Part-3)

Thank you for going through this article❤. Have a good day 😄.

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