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# Some useful tips on volume calculation of concrete staircase

In this development instructional exercise, you will get familiar with the procedure for making the structure and estimation of the volume of concrete or steel for U-shape staircase. Today in this instructional exercise, we give count to an arrangement and section of a u-shape staircase.

The greatest riser of the staircase ought to be 7 inches and least 4 inches. The base tread ought to be 10 inches and most extreme 12 inches or 1 feet. The broadness of the stair ought to be 5 feet. The landing of the stair ought to be at least 10 feet 6 inches. The dividing among two flights ought to be at least 6 inches. The steps in the stair run from 1 to 9. The midsection thickness of the piece ought to be at least 6 inches.

## Following measurements are used in the calculation

• Height of floor = 10 feet
• Height of one flight = 10/2 = 5 feet
• Height of Risers = 6 inches = 0.5 feet
• Number of risers = Height of flight/Riser = 5/0.5 = 10 nos.
##### Some useful tips on volume calculation of concrete staircase

So, total steps along with landing = 10 nos.

• Length of tread = 10 inches = 0.8 feet
• Number of treads = (Number of risers - 1) = 10 - 1 = 9 nos.
• Thickness of waist slab = 6 inches = 0.5 feet
• Length of step = 5 feet

With the use of following formula, the volume of concrete will be determined for steps:-

Volume of one step

= 1/2 x riser x tread x length of step

After putting all the values, we get the following:-

1/2 x 0.5 x 0.83 x 5

= 1.03 cubic feet

As there are 9 number of steps in a flight, so the volume of steps for first flight

= 9 x 1.03 = 9.27 cubic feet

Now, it is required to determine the concrete volume for the waist slab. Before that, you have to find out the inclined length of the waist slab by applying the following formula:

(horizontal length)2 + (height)2

But, the horizontal length height is unknown here.

The horizontal length will be computed as follow:-

Horizontal length of waist slab

= Tread x Number of Steps

After putting the values, we get the following:-

0.8333 X 9

= 7.4 feet

Now, it is required to determine the height of the top of the landing from floor as follow:-

Number of riser x Height of riser = 10 x 0.5 = 5 feet

So, inclined length of waist slab = v(horizontal length)2 + (height)2

= v(7.4)2 + (5)2

= v79.96

= 8.93 feet

Hope this article on the calculation of stair concrete volumes was useful to you! Please let us know what you would like us to write more about.

##### To get more details, go through the following video tutorial.

Video Source: Civil Engineers
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