# Tips to settle the cutting length of width of tread marble for stair flooring In this construction video tutorial, one will learn how to settle the cutting length of width of tread marble for stair flooring. It should be remembered that no guess work should be accomplished for stair flooring. In stair flooring it is difficult to estimate the riser and tread and so estimation should be created cautiously.

Besides, every tread in a stairway should be calculated equivalently. If significant differences among the treads occur in a stairway, there will serious safety issue.

TREAD : Tread stands for Horizontal section of each flight.

RISER : Riser stands for a vertical measurement of each flight.

The Relation among the Tread and Riser will be as follow :
So, TREAD = RISER – 1

The calculation is done on the basis of the following dimensions :-

R.C.C tread = 250 mm
Nosing = 10 mm

The density of mortar = 35 mm
The density of marble = 15 mm

The length will be calculated on the following ways :-

L = (Tread – density of mortar-density of marble – nosing) + take tread twice + (density of mortar + density of marble + nosing)

After putting all the values, we get the following :-
L = (250 – 35 – 15 – 10) + 250 + 250 + (35 + 15 + 10)
= 750 mm

Now, the width of tread should be calculated as follow :-

Width of tread = L/number of tread = 750/3 (as there are 3 treads in the example) = 250 mm

To get more clear information, go through the following construction video tutorial.

Video Source: L & T - Learning Technology