The optimal tread width is 27 cm or more;

[zihadhosenjm40]

The total height of the porch is the distance from the ground to the bottom of the threshold. The area in front of the entrance door should be 5 cm lower than the end of the door so that it opens freely;
The size of the platform should be equal to the width of the door with a margin of 15 cm. For the movement of two people, its safe and convenient width is 1 meter or more;
The height of each step is the same and is determined individually, taking into account the category of people who will move along it. The range is 12-20 cm;
The number of steps is determined by dividing the porch height by the selected step height. If the value is not an integer, the step height can be adjusted;
The inclination of the stairs is limited to 26-45 degrees.
Making a project
It consists of drawing a sketch first, then a project, which will russia mobile database all the necessary parameters. When performing construction work, the project should be followed.

Site preparation
At this stage, the debris is cleared from the site of the concrete foundation installation. This usually applies to new buildings.

If it is necessary to dismantle the old structure, then the algorithm of actions for preparing the site for a new concrete base of the porch is as follows:

A pit is dug 20-30 cm deep below the soil freezing level;
A "cushion" is laid - a pie of a 15-centimeter layer of compacted wet sand, a 20-centimeter layer of crushed stone, a 10-centimeter layer of sand, watered. Such preparation of the concrete base is done so that groundwater does not prematurely destroy the porch during operation;