Such engineering solutions are not very popular in private buildings, as they are characterized by a number of disadvantages - the steepness of the rise, and this does not suit many; complexity of installation; the impossibility of moving something dimensional from floor to floor. But the fact that spiral staircases are compact and can be installed anywhere, in a relatively small area, is an indisputable fact.

In addition, their final price is significantly less than models assembled according to other schemes, due to a reduction in material consumption. It is these arguments that in some cases are decisive when choosing a design. With how to make a spiral staircase from metal with our own hands, we will figure it out in detail.

Preparation stage

The issue of assembling a spiral staircase from prefabricated prefabricated elements (although this is also done by hand) does not make sense to consider. Each kit is accompanied by instructions, in which everything, point by point, is painted. But if you mount from scratch, then you first need to evaluate your own capabilities and decide on a number of points.

Method of working with metal

The casting technique, as well as the assembly of the structure using bolted connections, is clearly not suitable. The first is due to the impossibility of implementation, and not only at home, but also in a small, albeit specialized, workshop. The second one will not ensure the reliability of the spiral staircase, taking into account the constant dynamic loads to which all its components will be subjected daily. There remains only one acceptable option for doing all the operations with your own hands -. If desired, practical skills can be acquired in a relatively short time.

Material selection

Taking into account the fact that the installation is done by hand, by welding, best option- steel. It will provide the required reliability of the structure and, in addition, it is easy to process at home. The processes of coating metals with polymer layers, nickel plating and are described on our website in some detail.

There are recommendations for the use of aluminum for the manufacture of railings. Arguments - low weight and the possibility of independent anodizing of structural parts (handrails, balusters, opening filling elements). The author will not argue with this, but draws attention to the fact that we are talking about a spiral staircase. Consequently, the requirements for the reliability of the fence (taking into account the steepness) increase dramatically. That is why for such structures it is necessary to use only steel. And all other materials are only as additions that serve as decorative elements, nothing more.

Choice of engineering solution

Installation is carried out based on the features load-bearing structure spiral staircase.

• On strings. The steps are fixed on the carrier beam with only one side.
• On stringers. Both ends are open, and the step itself is located on the bearing element (beam) of the spiral staircase.
• On the pains. There are 2 types of such spiral staircases.

Option 1 - steps are fastened with bolts to each other; the central support is mounted.

Option 2 - steps are attached to the wall of the house; there is no bearing beam.

• Lift height (H) - measured between the levels of the finishing floors of the lower and upper floors.
• The height difference between the turns (H1) is the distance from the step to the one located strictly above it. In fact, this is the growth of a person with some margin. The recommended value is within 200.
• Riser height (h) - for ease of movement of the order of 16 ± 4. In some schemes, this structural element is absent, especially in residential buildings. This solution greatly facilitates the care of the spiral staircase. In this case, it is necessary to eliminate the risk of foot slipping between the steps by reducing the difference in their height - no more than 16.
• Tread depth (h1) - so that the foot does not slip off the steps, is selected within 27 ± 2. But this is a general recommendation. It should be taken into account that, as a rule, when descending / ascending along a screw structure, we move along a conventionally marked line, which is approximately ⅓ of the radius of the staircase from the outer end of the steps. When calculating its parameters, this nuance should be taken into account. That is, the indicated 27 cm refer to those points that are located on a conditionally outlined arc.

Basic requirements for spiral staircases

They are detailed in the relevant GOST and SNiP. It does not make sense to list them all, since most of them are needed only by professional designers. In addition, in each document there are a number of references to other regulations regarding, for example, the characteristics of steels, requirements for welds, and the like. When making a spiral staircase with your own hands, given its small length, it is enough to know the basic provisions.

• Ladder width. Installation of only one stringer is allowed if this parameter does not exceed 1.5 m. With a larger structure, an additional support will have to be installed.
• Step width. In order to ensure the safety of movement, a minimum is defined - it is equal to 0.9 m.
• h1 - the recommended depth value is indicated above. But the minimum, at the junction with the support - 100 mm.
• Opening dimensions. When calculating the parameters of a spiral staircase, it must be taken into account that the fingers should tightly cover the handrail. Therefore, between it and the wall, it is necessary to leave some gap (about 8 - 10 cm).

The procedure for calculating the parameters of a spiral staircase

There are many sites on the Internet that have online calculators. But even if the calculations are done independently, the original data does not change. What will need to be determined?

• Overall ladder height H.
• The optimal diameter of the structure, depending on the dimensions of the room and the style of its design. Based on this, the outer radius ® is calculated. For private houses, it is selected within (m) 1–1.5.
• The radius along which the conditional line of movement of a person ® passes.

Calculation algorithm

Before proceeding with the calculations, it is necessary to convert all quantities into single system. As a rule, it is customary to do calculations in mm, but in fact - to whom it is more convenient. The main thing is not to substitute values ​​​​in the formulas, for example, height in m, and radius - in cm.

The length of the march (L) is determined. In other words, it is the circumference (along the line of incline). We recall that it is separated from the wall by a third of the radius of the stairs. Therefore, r = 2/3 R. How to calculate it correctly?

The diameter of a spiral staircase is (step width x 2) + section of the central support. Only by finding this value, you can begin to determine the "small" radius, the value of which is substituted into the formula known from school:

L = 2π x r

The number of steps on the march is determined. Knowing the depth of the tread, this is easy to do:

N = L / h1

You can do it differently - divide H by h. The technique is selected based on a specific engineering solution. If the procedure for calculating the number of steps is clear, then everything else is not important.

One should not lose sight of such a parameter as the thickness of the steps. The total value is subtracted from the height of the stairs before calculating their number.

The diagrams and tables below will help the reader find answers to questions that have arisen.

What to take into account:

• The above calculation method is used for spiral staircases of the simplest designs, when all steps are located on one turn. If there are several of them (which is rare, but found in private homes), then their number must be taken into account.
• The last step may coincide with the level of the upper floor, so it is not taken into account.
• If the result is a fractional value, then rounding up is done.
• Placement of steps with a slight "overlap" (in the projection) increases the comfort of movement.
• It is not recommended to use a workpiece with a cross section of less than 50 mm as a central post.
• The calculation of the load is made taking into account the simultaneous presence on the spiral staircase of at least 3 people.

It remains to be added that in most cases it is advisable at the initial stage to mount the bearing part of the structure, and install all other elements already in place.

Good luck in this business!

DELSNAB steel structure plant will produce a spiral metal staircase in Moscow quickly and efficiently. Our specialists have extensive experience in the implementation of projects for the manufacture of spiral staircases. Having our own material and technical base in Moscow allows our company to set the best prices for our products.

One of the main areas of work of our plant is the design, manufacture and installation of stairs and stair railings. You can order a spiral metal staircase directly from the manufacturer, and we are ready to start right now both with the implementation of large projects from enterprises and developers, and with orders from individuals. We are located in Moscow, which is convenient for residents of Moscow and Moscow Region.

Catalog of metal spiral staircases.

The table shows the types of stairs offered by Delsnab. For spiral metal stairs prices are per 1 meter.

A photo	Description	Price per meter
	Staircase spiral, compact, with a platform. It consists of wedge-shaped simple steps, which are attached with a narrow end to support column or a pole. There is a platform.
	Spiral staircase to the second floor Height 1.5-2 m. It can have any slope and height of the steps of the structure. Compact.
	Stairs spiral metal, on a basic rack. Individual steps are attached to a monolithic support column. Rotates up to 360°
	Stairs spiral metal with a protection It can have different sizes of screw lifts. Between the steps, the height is from 17 to 20 cm.
	Stairs spiral fire It is made of non-combustible alloys, which are treated with an anti-corrosion compound. Anti-slip.

Features of the structure of spiral staircases

A spiral staircase consists of a rack, directly to which the steps are attached. The rack is of a spiral shape, treads are fixed on it. To ensure comfort when moving along a spiral staircase, and also in accordance with GOST, the width of the tread is 20-40 cm. This type of staircase is fixed on the first floor to the floor and attached to the end of the floor on the second floor.

A distinctive feature of spiral staircases is that they do not require a load-bearing wall. The design can be installed anywhere, even in the middle of the room.

You can order a spiral metal staircase from us from the manufacturer of the following types:

• with a support in the center, which is a pole, rack or column, with attached steps in the form of wedges;
• on a bowstring, where the main element is a bowstring with steps;
• on the stringer to which the steps are attached.

Metal spiral staircases are made from different types metal. They are divided into 4 types:

• Cast stairs made of bronze, cast iron or brass.
• Welded stairs.
• Forged steel stairs.
• Teams that are assembled on the spot.

Buy a spiral metal staircasepossible with different step attachments.

• On the sleeves, these are pipe sections with a diameter larger than that of the support. Steps are fixed on them at a certain height on a support column. The bolts are fixed between the steps connected along the outer radius. Racks under the railing are placed on the outer bowstring of the steps. In this type of spiral staircase, the steps are attached to the bowstring.
• On the console - beams welded to the rack. The console acts as a step or base under it.
• On the supporting walls - if the structure is in the corner of the room, then the steps can be attached more securely. One side is fixed on a support post, and the other on the wall in special grooves.

How to buy a spiral metal staircase?

You can buy a metal spiral staircase from us in Moscow. The prices for our spiral metal staircases are the most optimal due to our own production. We can guarantee the quality of the product and its reliability. To buy a spiral metal staircase to the second floor, you need to place an order in the feedback form on our website.

Spiral staircases (metal) are a type of steel structure where the steps are spirally arranged in a circular area. At the moment, they are a very popular type of structure. The model combines elegance and compactness. It is used in the construction of almost any buildings, whether it is a summer residence, a private house, a building with a second floor, or an entertainment center or office. They serve as an excellent alternative to wooden and other structures with wide flights of stairs. Wherever space savings are required, as well as a spectacular decorative look, spiral structures from a number of steps are installed.

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Advantages of steel screw structures

1. Elegant and original appearance. A simple room easily becomes modern and beautiful.
2. No need for in large numbers places in the house.
3. The price of a metal spiral staircase is lower than a marching one.
4. Installation of these structures is not difficult.
5. A large assortment.

Of course, like any other thing, steel structures have drawbacks. The main ones are:

• inconvenience in use. For example, if you need to lift large furniture to the second floor of a building, then this process will be difficult;
• not an easy way to get around. There is no ability to move quickly, as this can be traumatic. However, if you choose a structure from elements with wide and comfortable steps, then the risk of danger is reduced.

Construction types

A spiral staircase is a design in which there are no inter-flight spans, and there is a central support pillar that serves as the basis for the steps. It is a general cascade of steps.

The production of steel stairs can be carried out c various materials(wood, ceramics, plastic, glass, stone and metal). Spiral structures made of metal are of the following types: welded, cast, prefabricated and forged. In terms of cost, the last two options will cost more.

According to the applied bearing element steel structures can be set as follows:

• on a string. The bearing element here is a spiral bowstring with steps;
• with central support. Bearing support - a column or pillar;
• on stringers. load-bearing beam on which the steps are based.

What does the company "World of Stairs" offer?

In our company you can buy or order a metal staircase (spiral) made of steel at a reasonable price in Moscow. Turning to us, you can be sure that the screw metal staircase order will be completed as quickly and efficiently as possible.
Our experts will take into account all your wishes and produce a design that meets your needs. It can be made in any style.

For your safety and convenience, the order is made and completed with railings and fences.

The price of metal spiral staircases to the second floor varies based on several parameters: material, construction type, decorative components and dimensions.

Call our operators, and they will be happy to help you choose the right option in Moscow. Phone numbers are listed on the website. You can also email us.

The online store has regular discounts and promotions.

You can buy a ladder made of metal cascade with delivery in Moscow, as well as pickup. Delivery is carried out as soon as possible.

Buy reliable products by choosing our company!