Today, most often in residential, industrial and office premises, the installation of stairs on bowstrings is practiced. These are high-strength constructions that also have an aesthetic appearance. They are metal or wooden. With the help of them you can transform any interior of the room. One of the main elements of this design is the bowstring for the stairs. Read more about this later.
Design Features
Often a bowstring for a staircase is made with dimensions of 50 mm in thickness, 300 mm in width and length from 2 to 5.5 m. These structures are attached in a special way - each step is inserted into the groove of the carrier beam. It is called a bowstring. On the back side of the steps is attached to the wall. There is a closed and open type of such facilities. In the first case, the presence of risers, which are absent in the second form, is mandatory. Most often, in such a design, the steps are made mortise.
To do this, take a bowstring for the stairs, and make holes in it, the size of which is 15-20 mm in depth. These cutouts include steps and treads. And so that they fit snugly, the depth of the grooves should be the same. In this design, the lowest step, which is superior in size to the others, gives beauty and convenience. Elegant carved railing is placed on it. Also, the expressiveness of the stairs adds an expertly executed fence. If there are any flaws on the steps, then they can easily be hidden by the track. Forged metal fences look very nice on these structures.
If the size of the room allows, then you can install a two-flight staircase. However, most often mount these structures with a direct span, as they are the simplest. For small rooms, a spiral staircase on bowstrings is perfect.
Calculation of the stringer stairs
This product can be built of wood or metal, if desired. The correct calculation of the bowstring parameters is very important. For example, with a thickness of 50 mm, the size of its overall width will be 300 mm, and the depth of the cut for the step must be made up to 30 mm. To calculate the length of the bowstring, the length of the march should be taken into account. The values of the width of the slots and the distances between them are the main characteristics of the stairs, thanks to which you can determine the height of the step, the width of the tread and the angle of inclination. Various bowstrings are made depending on the staircase design required , and also taking into account the technical capabilities of the room (floor distance, march width, etc.). If a spiral staircase is installed , then for it the specified product is calculated and made directly at the facility or in the factory.
Product Material
Currently, a considerable assortment of these products is available in the construction markets. A variety of necessary materials and the development of new technologies allows us to produce various varieties of components for this design. No exception is such a detail as a bowstring for the stairs. Everyone can choose a product to their liking. It is possible to buy modern ladders on bowstrings in many specialized stores. Although many craftsmen purchase components and make them on their own. Currently, larch and pine are mainly used for the production of such stairs. These materials are widely distributed in this field.
- Larch is easy to process, quite durable and looks beautiful in the finished product. It is perfect for rooms where there is high humidity.
- Pine is characterized by the hardness and strength of the material. It withstands significant loads and is also resistant to moist air, as it has a resinous content. It is a bowstring for stairs made of pine that is in great demand.
Tip
Analyzing the above, it is safe to say that each product can independently install the specified product. It would be a desire. However, it is better to turn to professionals in this field who will perfectly prepare the necessary calculation of the bowstring of the staircase and the product as a whole, and then effectively mount the specified structure.