# 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.

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 :-

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