As one of the possible options for arranging rough flooring today, quite often, specific designs, called adjustable floors, are chosen. Arrangement of such structures involves the use of a lag system mounted on mechanically adjustable supports, due to which all procedures for leveling the base are noticeably simplified. In addition, when using such a foundation, it is still possible to adjust the position of ready-made floors during their operation (in areas of arbitrary area).
Scheme of an adjustable floor
In order to make adjustable floors on lags, first of all you should be familiar with the principle of their device. Immediately, we note that in this case (by analogy with the traditional installation system), a clean floor covering is mounted on top of the base, consisting of special wooden boards or log.
The main difference between the mounting method we are considering and the classical scheme consists in a special method of fixing the genital lags, which in the first case occupy a strictly fixed position, since they are mounted on a static basis (on cranial bars). When preparing the adjustable base, the supporting bars are equipped with special movable sleeves with screw thread. Acting as supporting elements of the structure, such sleeves during rotation change the position of the logs vertically and correct the plane of the base.
Thus, by rotating the sleeves embedded in the lags, it will be possible to raise or lower portions of the genital base needing adjustment. The possibility of alignment without dismantling is the main advantage of designs on adjustable lags.
Despite the seeming fragility of embedded plastic bushings, the strength of the floor assembled on their basis is quite high. To increase the bearing capacity of the draft base, simply increase the number of movable support bolts.
Adjustable floors are installed enough just under the condition that the organization of assembly work strictly fulfills the following requirements:
Before you make adjustable floor, you should carefully prepare its base, which should be sufficiently rigid (best of all, if it is a concrete slab or screed poured over the subfloor).
Prepare the floor
To prepare the concrete foundation, you will need to do the following:
The above preparatory operations will allow you to get a reasonably solid base, as well as provide the required microclimate in the space under the floor.
Pre-placement of the lag
Direct assembly of adjustable floors should be done taking into account the following recommendations:
We advise you to take full responsibility for the requirement to comply with the specified temperature gap necessary to prevent possible deformations of structural elements when the temperature and humidity of the air in the room changes.
Installation of support columns
At the next stage of installation, you can proceed to the installation of the lag using adjustable the height of the plastic racks. To do this:
The elevation of the supports should be started from the edges of the cover, gradually moving to its center.
Speakers cut with a grinder
After all adjustment operations are completed - you will need cut the protruding parts of the support sleeves with a conventional chisel or grinder Try to fix the struts of the structure as rigidly as possible so that over time they cannot loosen. All subsequent flooring operations are performed in the generally accepted order.
This video footage from the beginning to the end shows the process of mounting an adjustable floor on the logs: