How to calculate stairs
Stairs are essential elements in many buildings, whether residential or commercial. Correctly calculating the dimensions of a ladder is critical to ensuring users’ safety and comfort. In this article, we will show step by step how to calculate stairs accurately.
Step 1: Measure the total height
The first step in calculating a ladder is to measure the total height it should win. This measure is made from the floor less than the upper floor, taking into account the thickness of the counterpart and the finished floor.
Step 2: Determine the number of steps
To determine the number of stairs, it is necessary to divide the total height by the desired value for the height of each step. The recommended height for each step varies between 15 and 18 centimeters.
Example:
Total height: 300 centimeters
Height of each step: 16 centimeters
Number of steps = total height / height of each step
Number of steps = 300 /16
Number of steps = 18.75
In this case, we round the number of steps up, resulting in 19 steps.
Step 3: Calculate the height of the mirror
The mirror is the vertical part of each step. To calculate the height of the mirror, simply divide the total height by the number of steps.
Example:
Total height: 300 centimeters
Number of steps: 19
Mirror height = Total Height / Number of Steps
Mirror height = 300 /19
Mirror height = 15.79
In this case, we round the mirror height up, resulting in 16 centimeters.
Step 4: Calculate the floor
The floor is the horizontal part of each step. To calculate the floor, simply multiply the mirror height by 2 and add with the desired width for the floor.
Example:
Mirror height: 16 centimeters
Floor width: 30 centimeters
Floor = (mirror height x 2) + floor width
Floor = (16 x 2) + 30
Floor = 32 + 30
Floor = 62 centimeters
Step 5: Calculate the length of the stairs
To calculate the length of the ladder, it is necessary to measure the horizontal distance it must win. This measure is made from the beginning of the stairs to the point of arrival.
Step 6: Calculate the size of the level
If the ladder has an intermediate level, it is necessary to calculate its size. The level is a flat area that serves as a rest between two stairs bids.
Step 7: Check safety standards
Before finalizing the ladder project, it is important to verify the safety standards established by ABNT (Brazilian Association of Technical Standards) and municipal laws. These standards establish minimum requirements for the construction of stairs, ensuring users’ safety.
Following these steps, you will be able to calculate stairs accurately and safely. Remember to always rely on the help of a qualified professional to ensure a satisfactory result.