Wooden turning staircase - the solution for a small room! Where winders are used and how to make them with your own hands The formula of metal stairs with winders

A simple online calculator will calculate the number of steps, the depth of the steps, the height of the steps for a 90° winder staircase to the second floor. Start calculating stairs!

How to calculate the stairs

Let us give the well-known formula of the French architect Francois Blondel, for the calculation they most often use his formula for the convenience of stairs, it is based on an average length of a human step of 63 cm.

Blondel formulaS = a + h*2: tread width + 2 riser heights = 60-65 cm.
Safety formula:a + h= 46 cm
Convenience formula:a – h = 12 cm

s is the value of the average step
a - tread width
h - step height (riser)
Thanks to these three formulas, the convenience and safety of the stairs are determined.
It should be taken into account that the width of the tread - the value a should be within 25 - 30 cm. And the height of the step - the value h should lie within 15 - 20 cm.
P.S. with other given parameters, the staircase will not be convenient, in other cases it will be dangerous.
The program for calculating the steps of stairs with winders will give an accurate calculation of the number of comfortable steps, the depth and height of the steps, as well as the angle of inclination of your stairs and how much your winder staircase is “comfortable”, “uncomfortable” and ultimately safe. Depending on the final results, you can always adjust all the values ​​​​to the ideal parameters of the stairs for the safest possible movement along it. Change the number of steps, choose the most suitable number of steps for your winder stairs. Keep in mind that the width of the stair turntable is equal to the width of the stairs that you specify in the calculator yourself.

Winder Stair Safety

We recommend making the number of steps of the turntable not even, so that starting ascent and descending, you can do it with the same foot, with the supporting one, it is much more convenient. It is desirable that there are at least 3 steps in one flight of stairs. To make your stairs as safe as possible, you need to know that the height of the staircase railings must always be higher than the center of gravity of a person, so the safe height of the railing is 90 - 120 cm.

Winder ladder drawing

The online calculator will automatically, according to your parameters, display a drawing of a 90-degree winder staircase and give complete calculations of a wooden staircase with stringers, calculate the angle of inclination and the dimensions of the upper and lower bowstrings. It will also show recommendations related to the number of steps, the angle of inclination of the stairs and the length of the opening, if any, relative to the dimensions you specified. If you wish, you can save the final calculations and the drawing of the stairs to your computer.

Runners are called steps, the width of which increases from the inside to the outside. Naturally, the calculation of the winder steps must be done with special care at the stage, since the safety and convenience of the entire staircase structure depends on this, whether it be a spiral staircase or a turn of a direct march. Most often, winder steps are made when it is necessary to reduce the dimensions of the stairs by excluding the inter-span platform from its design. At the same time, a place with non-standard steps becomes not very convenient, especially for descending, because the closer a person steps to the inner edge, the less space remains for setting the legs.

Primary requirements

When creating a staircase with winder steps, you need to follow a few basic rules:

1. The outer part of the steps should not be wider than 40 cm.
2. The minimum for the inner part is 10 cm (meaning its useful area, and not the very edge).
3. The middle of the march is 20 cm, and this value must be observed throughout the structure.
4. The radius of curvature, which characterizes the turning part, is a minimum of 30 cm.

Important! The course of the winder steps should not be winding, otherwise walking along it will not only be inconvenient, but also dangerous.

Calculation of winder stairs can be made by various methods, depending on what angle the ladder turns.

The method of proportions, with some amendments, is also used to calculate the parameters of rotation by a right angle (90°). It should be noted that this is the easiest way, other graphic methods are more difficult, they require basic knowledge of drawing and design.

The method, called Danish, is also used in calculating the turns of stairs by 90 ° and 180 °. First of all, a horizontal projection is built, on which, as in the method of proportions, a line is drawn in the middle of the march. This line is also divided into segments the size of the width of the step. Then you need to decide on the beginning of the winder steps, the border is marked with point A. Another important point - the beginning of the winder step, located in the middle of the turn, is indicated by the letter B.

Then half of the line of the middle of the march with tread marks is unfolded so that a straight line is obtained, and a perpendicular is drawn from each mark. For the mark, which indicates the first winder step (after the straight lines), the length of the perpendicular is chosen equal to the width of the tread. For a mark at the opposite end of the unfolded straight line (mark of the winder located in the middle of the turn), the length of the perpendicular is taken equal to the minimum width of the steps. The two resulting perpendiculars are connected to each other, and the lengths of the perpendiculars for all other marks are obtained. The resulting segments are stacked in ascending order in one straight line, which is projected onto a straight line, equal in length to AB. This gives complete information about the narrow sections of the steps. The found dimensions are transferred to the horizontal projection (on the AB line) and, by connecting the points with the marks on the mid-march line, the full dimensions of all winder steps are obtained.

Other Methods

When using the sweep method and the line lifting method, the horizontal and vertical curvature of the rotary structure is taken into account. In the sweep method, the first step is to determine the boundaries of the steps, after which the drawing is transferred to a vertical projection. Similar to the manipulations performed in the Danish method, the markup is placed so that the resulting segments can be transferred to another plane by drawing perpendicular lines.

Here, too, two projections are needed. The horizontal one is drawn in the same way as the previous methods considered, a line of the middle of the march is also drawn on it. In addition, points are marked corresponding to the beginning and end of winder steps. The line of the middle of the march is divided into segments the width of the steps, usually 200 mm.

The vertical axis of the vertical projection, in turn, is divided into segments equal to the height of the steps. Next, straight steps are selected and, by connecting their edges with lines, the corresponding segments are obtained, with the help of which the intersection with the horizontal projection axis is found. The resulting point is used later to construct circles that are needed to determine the vertical projection of the bowstring line. To find the tops of the steps, use the vertical axis - draw a line perpendicular to it until it intersects with the line of ascent. The projections of the obtained points on the horizontal axis will give the dimensions of the narrow parts of the winder steps. These dimensions are used to find all other winder parameters.

Slope of stairs

An important characteristic of the stairs is its steepness, in other words, the angle of inclination. Not only the ease of use of ladder equipment, but also safety depends on the steepness. The human step, its average value, is the main guideline. In other words, the convenience of moving up the stairs requires that a certain proportion be observed between the height of a person’s rise at each step and the distance at which he moves forward. Normally, the ratio of the height of the ladder structure to the length of its projection on the horizontal axis is in the range from 1:2 to 1:1.75. When expressing these proportions in angular units, it turns out that the slope of the staircase should not be more than 30 °.

When calculating and designing a staircase in a two-story house or a two-level apartment, a common problem is the lack of free space for its installation. In such a situation, a wooden staircase with winder steps would be an excellent solution. But such a design has its own characteristics in the calculation and installation, and we will talk about this below.

A winder staircase is a flight staircase with a turn of 90 or 180 degrees. Its feature is winder steps, which can significantly save the area occupied by the stairs after installation. Winder steps are installed at the turn of the stairs instead of an intermediate platform.

Staircase with winder steps and turn 90 degrees
Staircase with winder steps and turn 180 degrees

Consider the main advantages and disadvantages. The advantages of stairs of this design include:

• take up little space
• aesthetic appeal
• visually make the room wider

to the cons:

• complexity of calculations
• winder steps are already ordinary, which causes inconvenience
• increased risk of injury

How to calculate a staircase with winder steps

Before proceeding with the design, you must understand that any calculation is a complex procedure that requires certain knowledge and the use of special formulas. Therefore, in order to avoid errors and problems in the future, it is recommended to use special programs, such as AutoCAD, StairDesigner, Compass, or use the services of specialists.

The manufacture of any wooden staircase begins with the calculation of dimensions and its presentation graphically. Before calculating the dimensions, you should remember the recommended dimensions of the elements of the stairs, namely:

• the width of the flight of stairs in a private house should be 600 - 700 mm for one person, but do not forget about the possibility of oncoming traffic, so the optimal width will be 900 mm
• tilt angle. The ideal ratio of the height of the march to its horizontal projection is 1:2 - 1:1.75, in which case the slope of the stairs is about 30º. If there is not enough space, then the maximum allowable slope is 40º, which in the ratio of march to projection is 1: 1.25
• the thickness of the tread usually depends on the width of the march in a ratio of 1:20, for example, for a march 900 mm wide, the thickness of the tread should be about 45 mm
• there are no special requirements for the riser, it can be made of any wood, and the recommended thickness is 15 - 25 mm. Veneered plywood is also often used to make risers.
• stringers should be straight and without knots, the width of the board from which they are made should be 250 - 300 mm, and the thickness 40 - 70 mm
• for convenient descent and ascent, the railing is set at a level of about 900 mm
• the dimensions of the steps must correspond to the formula 2 * h + b = 600 ... 650 mm, where h is the height of the step, and b is its width. A comfortable height is considered to be a size of 140 - 180 mm, and a width of 250 - 300 mm
• the number of winder steps is recommended to be three, less often four pieces. It all depends on the specific situation.

Ladder with three winders (marked in green)

DIY wooden staircase with winder steps

Start calculation wooden stairsyou need to determine the number of steps, for this you need to take the distance from the floor of the first floor to the floor of the second floor and divide by the approximate height of the step. Consider an example where the height of the stairs is 2700 mm, and the length of the free space allocated for the stairs is 3300 mm.

Dimensions of the future stairs

Dividing the distance between the floors of the first and second floors by the average recommended step height of 2700/155, we get the number of steps equal to 17.41 pieces, round up to 17 pieces and subtract one step, since the floor of the second floor is already one of the steps of our future stairs. Thus, we get the number of steps equal to 16. Dividing the height of the stairs by the number of steps, we get the exact size of our step, which is 169 mm.

At the next stage of the calculation, you need to decide how many straight steps there will be before the turn of the stairs and, accordingly, before the winder steps. Suppose there are three straight steps. The next element of the stairs will be a winder turn. First of all, you need to decide on the width of the flight of stairs, since in order to turn the stairs by 90 degrees, it is necessary to allocate space for winders in the form of a square, the sides of which have a length equal to the width of the flight of stairs. Let's take the size of 900mm for the width of the flight of stairs. Now knowing the size of the element with winders and the number of steps after, we can calculate the width of the step. In our case, the number of steps in the upper flight is 10 pieces (the total number of steps is 16, 3 steps before the turn, 3 winder steps)

(3300 - 900) / 10 = 240 mm

Having the width and height of the steps, we can check whether they will be comfortable for walking using the formula 2 h + b = 600…650 mm.

2*169 + 240 = 578

As we can see, 578 mm is much less than the recommended 600 - 650 mm, so in order to increase the width of the tread, we need to reduce the number of steps after the turn. To do this, you can increase the number of steps before the turn or increase the number of winder steps to four. We will increase the number of steps before the turn to four, thereby reducing the number after the turn. Let's carry out once again our calculations with the width of the tread:

(3300 - 900) / 9 = 267 mm

The width has increased. Now let's check the comfort of movement with such dimensions

2*169 + 267 = 605mm

Now, knowing the size and number of steps before and after the turn, we can calculate the angle of inclination of the stairs and check if it falls within the recommended range.

To do this, we need to know the height of the last march and the length of its projection onto the floor. We can get the height by multiplying the number of steps up to it by their height and subtract this value from the total height

2700 — 7*169 = 1517

The length of the projection will be equal to the difference in the length of the niche and the platform for winders

3300 — 900 = 2400

Knowing this data and using the tangent angle formula, we can determine the angle of inclination of the stairs, which is approximately 32º, this result falls into the recommended range.

Approximate appearance of the finished staircase made according to the dimensions taken above

It remains only to calculate the size of the wooden winder steps. When assigning the size of the wedge-shaped winder steps, the calculated values ​​​​are taken in the middle of the march. From practice, I can say that on average there are 3 steps per square, less often 4 steps, it all depends on the specific case. With three steps, the angle of rotation of the winder steps is a multiple of 30 degrees, with 4 steps the algorithm is different. The angle of the first step is 24º, the second 45º, the third 67º and the fourth, respectively, 90º.

Winder Angle

Of course, 3 steps are more comfortable than 4, since the average tread with three steps will be 290 - 300 mm, and with four 210 - 220 mm. This can be seen in the figure below.

Step size

The last, but optional step is to draw a ladder in real size on the wall in the place where it will be installed. Such actions will help you visualize the design in space and check the correctness of your calculations.

Before you start making a wooden staircase with winder steps with your own hands, you need to decide on the type of wood from which it will be made. The most common species for production are oak, ash, beech, maple and larch. Pine is also very popular, but compared to the listed species, it does not have the same density, but it is much cheaper.

List of tools that you may need to make and install stairs:

• drill
• screwdriver
• jigsaw
• hand saw
• hammer
• plane
• chisel
• roulette
• level
• screws, screws, nails and other fasteners

A ladder with winder steps can be made in two ways: on stringers or bowstrings. The option with bowstrings is more common and easy to install, in the case of stringers, manufacturing and installation is more difficult, but this design looks more elegant and beautiful.

Installation of a wooden staircase occurs in stages:

• installation of a bollard for the winder steps and the first flight
• installation and fastening of the supporting structure of the second flight
• installation steps, should be done from the bottom up
• installation of supports, balusters and pillars
• installation and fastening of railings

Outcome

In this article, we have reviewedhow to make a running ladder and how to calculate it. Making a wooden staircase with winders is a difficult process, but if you have certain skills in working with wood and sufficient knowledge in geometry, then this process is quite doable on your own. Do not forget that with proper care and maintenance, a wooden staircase will serve you for more than one year, so when making calculations, follow the recommendations outlined in this article, this will help make it safe, and walking onstairs all these years will bring you only pleasure.

With a good design, a corner staircase will look great in your home.

How to calculate winder corner stairs

The main disadvantage of a direct march is the high requirements for free space. Therefore, this design is not suitable for every home. Less demanding on free space - a corner staircase with a 90 ° turn.

Stylish corner staircase that occupies a minimum of space.

Short description

A distinctive feature of a winder staircase with a turn of 90 degrees is the absence of a landing. In its place are several wedge-shaped steps. Together they form a smooth turn from one march to another. To do this, one part of the steps is made narrow, and the other - wide.

Such a turn of the stairs is no less convenient option than with a landing.

In fact, a winder staircase is a combination of a helical and marching structure. From the first variety, she got space savings (albeit not too significant), from the second - ease of use.

Climbing the winder ladder will be more convenient for one person.

Such structures are usually installed in the corner of the room, although in some cases they can be placed right in the center of the room. In the first case, the load is partially transferred to the walls, in the second case, the structure is held by 2 load-bearing beams.
Making a staircase with a 90 degree turn is a rather difficult task. This will require the implementation of accurate, the availability of the necessary tools, as well as the manufacture of complex parts. However, with the right approach, this is quite a doable task.

An interesting option for installing a corner staircase is to an attached load-bearing wall.

Pros and cons of winder design

The advantages of stairs with a 90 degree angle include the following points:

• Saving free space. Compared to straight marching products, running models take up less space.
• Ease of use. If the steps are not too narrow, then climbing or descending the corner stairs is almost as convenient as using a conventional marching structure.
• Good reliability and load capacity. Marching varieties are the strongest and most reliable structures.
• Wide range of design possibilities. A variety of materials, shapes and details allows you to create a staircase with a unique design.
• Interior element. Turning stairs fit almost any room, giving the interior a new and unusual look.

Like all ladder structures, winder ladders have not only advantages, but also some disadvantages. Among which it is worth highlighting the following points:

• High price. The cost of manufacturing or purchasing a finished structure remains high.
• Manufacturing complexity. To create a quality product, complex calculations and a lot of time for manufacturing parts will be required.
• Difficulty in installation. To install a ladder with a turn of 90 degrees, considerable effort and at least 2 people will be required.

A simple version of the winder ladder.

Material used

In the modern world, many materials are used for the production of stairs. For example:

• tree;
• metal;
• concrete and reinforced concrete;
• fiberglass, etc.

Pretty not a simple design winder stairs made of concrete.

In most cases, there are models made of wood or metal. The high popularity of these materials can be explained by two factors: reasonable cost and good strength.
Working with a tree is quite simple - no special skills or sophisticated equipment are required here. Also, wooden stairs look presentable and give the room a certain comfort. However, it should be borne in mind that in order to protect the surface, it is required from time to time to cover it with protective agents.

A wooden winder staircase will be ideally combined in a country house.

All-metal products are less common. The fact is that for the manufacture of such structures, knowledge of welding and the availability of appropriate equipment are required. In addition, metal stairs with an angle of 90 degrees look quite specific and will not suit every interior.

Advice!
In some cases, a combined approach can be used. For example, to make load-bearing beams of metal, and install wooden steps on them.

Metal staircase with wooden winder steps.

Despite the similarity of the running corner design with marching models, it is less convenient to climb or descend such stairs. The main negative point is the winder steps, in which one end is narrow and the other is wide. It is this structure that increases the risk of injury and the likelihood of slipping off the steps.

Such a corner staircase is not very safe, so you should go down closer to the wall.

Also, usability is affected by the size of other elements. For example, high railings are not suitable for children, and climbing narrow steps will not be very convenient for everyone without exception.

Therefore, to increase the comfort of use, important points should be considered:

• the minimum depth of the narrow part of the winder step is 10 cm, the middle part is not less than 20 cm, the wide part is not more than 40 cm;
• the optimal step height is 15-20 cm;
• the dimensions of the running and straight steps must correspond throughout the entire flight of stairs;
• recommended railing height - 80-100cm;
• the optimal distance between the balusters is 12-15 cm;
• the minimum height of the opening (free space above the stairs) is 2 m;
• the optimal angle of inclination of the stairs is 30-45O;
• the minimum width of the flight of stairs is 90 cm.

The optimal dimensions of the winder ladder.

Step calculation

• N = number of steps;
• H1 - floor height;
• H2 - step height.

Calculation of stairs with running steps.

But in some cases, an integer value may not work. In this case, you can go three ways:

• change the height of the steps;
• make the first step of a non-standard size;
• install a platform under the stairs to “adjust” the structure to the desired height.

Advice!
Separately, it is worth mentioning the winder steps - they are not recommended to be installed more than three to five pieces. If there are more of them, then the depth of each tread will turn out to be too narrow and it will be inconvenient or even dangerous to climb such a ladder.

Enlarged winder step.

Making a winder ladder with your own hands

Unlike buying a finished product, creating a winder staircase with a 90-degree turn on your own will avoid large financial costs. However, keep in mind that this is a long and complicated process.

A more complex type of winder staircase design with a 180 degree turn.

For greater clarity, it should be divided into several stages:

1. carrying out calculations;
2. parts manufacturing;
3. construction installation.

Preparation

Design is the most important step in creating a staircase. It is at this stage that the dimensions of the elements are determined, as well as the appearance of the structure. For this reason, special attention should be paid to preparation.

Design consists of 3 stages:

1. taking measurements;
2. making payments;
3. diagramming.

First of all, you should determine the location of the flight of stairs and take appropriate measurements. In particular, the length, width and height of the space under the stairs. It is the location of the running product and the free area that affect the size of the structure.

A good miscalculation of the space under the winder stairs.

The next step is to do the calculations. Here you should build on the previous stage, and also take into account the optimal dimensions. For example, the angle of the stairs, the number of steps, etc.
Produced drawing of winder staircase with 90 degree turn.

The winder ladder scheme acts as a visual aid. In addition, a neat and unhurried approach to drawing up a drawing will avoid many problems in the following stages. For example, questions about the size of individual elements or their compliance with the recommended parameters.

Execution of works

For the manufacture of parts and installation of the structure, the following tools will be required:

• saw;
• Sander;
• drill;
• welding machine (if there are metal elements in the stairs);
• fasteners (bolts, anchors, self-tapping screws).

The manufacture and installation of the structure takes place in a certain order:

1. load-bearing beams are made and mounted on the wall;
2. a support pole is installed;
3. steps are cut;
4. steps are installed on load-bearing beams (they should be mounted from the bottom up);
5. balusters are inserted into the bearing beams;
6. handrails are placed on the fence posts.

Space saving and pleasant appearance - this is a brief description of the corner staircase with winder steps. This design will look great in any room, literally transforming it. Therefore, in order to get a beautiful and high-quality product, you should act very carefully and slowly at all stages of manufacturing.

Ksenia Skvortsova. Chief Editor. Author.
Planning and distribution of responsibilities in the content production team, work with texts.
Education: Kharkov State Academy of Culture, specialty “Culturologist. Lecturer in History and Theory of Culture. Experience in copywriting: From 2010 to the present. Editor: since 2016.

Rice. 1 General drawing of stairs

"Show risers: H" function

Fig.3 Execution of stairs with risers

You can build your stairs with or without risers. The drawing of the stairs allows you to see how the structure will look like with both options.

"Upper step below floor 2nd floor: SP" function

Rice. 4 Stair version, with the top step below the floor 2 floors

Depending on the mutual placement of the structure and the floor of the upper floor:

1. The top plane of the top step is flush with the plane of the floor of the top floor;
2. The upper plane of the upper step is lower than the floor plane of the upper floor by the height of the step.

The choice of this or that mutual placement may depend on: the thickness of the interfloor ceilings, the desired relationship between the number of steps and their height, the length of the blanks for the stringers and the length of the opening, the desired angle of inclination of the stairs, or simply the tastes and preferences of the owner of the house. Please note: in the figure, in which the upper step is below the floor of the 2nd floor, the thickness of the interfloor overlap is greater than in the figure, in which the upper step is at the floor level of the 2nd floor. If the thickness of the floor is less than the height of the step, the stringer simply does not rest against the floor (therefore, when demonstrating the second option, this thickness had to be increased).

"Black and white drawing:" function

Rice. 5 Black and white drawing of stairs

It is useful to use this function in two cases:

1. If you are used to working with standard GOST drawings, and, accordingly, better perceive graphics without color content.
2. If you are going to print the results of the calculator. Then you will spend less paint / toner and the visual perception of the drawings on paper will be better. And, of course, this function is used when printing on a black and white printer.

"Change lift direction: LR" function

Rice. 6 View of stairs with different directions of ascent

A specific staircase, which is placed in a certain way in the house, can be approached from the side from two sides or only from one side - when the staircase is in contact with the wall. In the latter case, there are two options for placing the structure relative to the observer:

1. Rise from left to right;
2. Climb right to left.

This function allows you to visualize both of these options.

Calculation of winder ladder with 90° turn

The main result of this calculator:

1. Information needed to make bowstrings
2. Information required for the manufacture of steps

According to this information, the parts from which the structure is assembled are made.

All other drawings show the final view of the structure: after joining the bowstrings and steps with each other.

A feature of this calculator for calculating stairs with 90 ° turning steps is the implementation of two functions:

1. Evaluation of the convenience of the stairs;
2. Adjustment of the design of the stairs.

The assessment of the convenience of the stairs is carried out according to three criteria:

1. Compliance with the design of the average stride length. According to this criterion, the sum of step depth and two step heights should equal the average step length. The average human step length is 63 cm.
2. Step depth. Comfortable step depth - from 28 cm. With a given opening length, you can adjust the step depth by changing the protrusion.
3. The angle of the stairs. The optimal angle of inclination of the stairs is from 30° to 40°. At angles of inclination from 20° to 30° and from 40° to 45°, the comfort level of moving between floors is significantly reduced. Inclination angles outside the above limits can significantly affect the speed of movement between floors and the level of safety of the stairs.

Based on the results of evaluating a specific design, an indicator of the level of convenience is issued for each of the criteria, and the stairs are assigned an overall level of convenience. The calculator evaluates whether the stairs meet the well-known criteria of convenience, but you should always remember that your stairs in your home should serve your purposes as efficiently as possible. And if, in accordance with these goals, you need to build the most non-standard staircase in the world - go for it.

If there is a need to improve the design of the stairs, the calculator gives advice on how to do this:

1. Decrease/increase the number of steps;
2. Increase the protrusion of the steps (if the depth of the steps is insufficient for comfortable walking);
3. Decrease / increase the length of the opening.

After adjusting the design, as well as accurately calculating the winder steps of the stairs by 90 degrees, the normalized parameters will become closer to the ideal, but such an adjustment may have to be carried out several more times.

Instructions for the calculator stairs with winder steps with a turn of 90 degrees

In order to calculate a 90° winder staircase online using this calculator, you need to know the height of the floor, the size of the space that you can allocate for the staircase, the materials from which you are going to build it, and, of course, its purpose. use. Before starting work, it is necessary to carefully consider all the nuances: whether the staircase adjoins the wall, or is in contact with the interior elements of the house, and how this should affect the structure itself and the process of its construction. Perhaps, in order to select the correct option in terms of size and design, you will have to use a calculator to calculate and compare several. Before starting to process the material, make sure that the detail drawings correspond to the ladder that is right for you and your purposes. When building, attach the parts to each other, and the staircase itself to the house so that you can guarantee the reliability and strength of the structure for decades.

The stairs presented on our website can be divided into categories according to three mutually dependent criteria:

1. Length dimension

A. Maximum length - all steps are placed on one pair of bowstrings / stringers;

b. Average length - the steps are placed on two pairs of bowstrings;

V. Minimum length - the steps are placed on three pairs of bowstrings, the length dimension is regulated by changing the number of steps on the corresponding pairs of bowstrings.

2. Width dimension

A. Maximum width - the steps are placed on two or three pairs of bowstrings, the width dimension is regulated by changing the number of steps on the corresponding pair of bowstrings;

b. Average width - the steps are placed on two parallel pairs of bowstrings, the width dimension is equal to two widths of the stairs;

V. Minimum width - all steps are placed on one pair of bowstrings / stringers, the width dimension is equal to the width of the stairs;

3. The complexity of manufacturing

A. Easy to manufacture - made from bowstrings / stringers and rectangular steps;

b. The average complexity of manufacturing - is made from bowstrings, rectangular steps and platforms;

V. Difficult to manufacture - it is made of bowstrings / stringers, rectangular steps, platforms and rotary steps.

Stairs presented on our website:

• - 1.a.-2.c.-3.a.
• - 1.b.-2.a.-3.b.
• - 1.b.-2.b.-3.b.
• - 1.b.-2.b.-3.c.
• - 1.c.-2.a.-3.b.
• - 1.v.-2.a.-3.v.
• - out of classification
• - 1.a.-2.c.-3.a.

In each specific situation, the height of the floor is already set. Based on your own preferences, you can choose the level of convenience: either the convenience criteria are met, or the stairs are flatter, or steeper, etc. With this information, you can talk about the number of ascents (steps and platforms) in a particular situation.

Imagine that we have, for example, 12 lifts - steps and platforms. The design of the stairs is the shape of these rises (steps, marches, turning steps, platforms) and how these 12 rises are placed relative to each other.

You can place all these 12 rises in one row along the length of the opening - “”, ““. In this case, your ladder will have a maximum dimension in length, a minimum dimension in width and will not be difficult to manufacture.

You can place these 12 risers in 2 rows, rotated relative to each other by 90 ° (when viewed from above). With a platform on the turn - “°” - an easier option to manufacture (for example, 5 steps on the lower pair of bowstrings, a platform and 6 steps on the upper pair of bowstrings). With turning steps on the turn - “°” - a more difficult option to manufacture (for example, 3 steps on the lower pair of bowstrings, 3 turning steps and 6 steps on the upper pair of bowstrings). In these cases, your staircase will have an average length dimension and an adjustable width dimension.

You can place these 12 lifts in 2 parallel (when viewed from above) rows placed side by side. With a platform on the turn - "" - an easier option to manufacture (for example, 5 steps on the lower pair of bowstrings, a platform and 6 steps on the upper pair of bowstrings). With turning steps on the turn - "" - a more difficult option to manufacture (for example, 3 steps on the lower pair of bowstrings, 3 turning steps and 6 steps on the upper pair of bowstrings). In these cases, your stairs will have an average dimension in length and an average dimension in width.

You can place these 12 lifts on 3 rows perpendicular to each other (when viewed from above). With platforms on the turns - "" - an easier option to manufacture (for example, 2 steps on the lower pair of bowstrings, a platform, 3 steps on the middle pair of bowstrings, a platform and 5 steps on the upper pair of bowstrings). With turning steps on the turn - "" - a more difficult option to manufacture (for example, 2 steps on the lower pair of bowstrings, 3 turning steps, 2 steps on the middle pair of bowstrings, 3 turning steps, 2 steps on the upper pair of bowstrings). In these cases, your ladder will have a minimum clearance in length and an adjustable clearance in width.

Or you can choose " ", which is not like any of the above and will give the interior of your home a truly sophisticated look, like a spectacular wooden or stylish metal screw.

This design is relevant in a situation where you want a staircase in two spans with a beautiful transition between them in the form of turning steps, and the amount of space in the place where it needs to be placed is limited. Turning steps are not attached directly to the bowstrings, so you will need to provide additional details through which the load from the turning steps would be transferred to the rest of the stairs.