Strengthening the doorway in the wall turns out to be necessary in cases where the desired door block has a lot of weight and is highly durable. It concerns this most often input doors, which require not just reliability, but also high burglary resistance. And the last quality includes strength and inputoomooma, and bases.
Strengthening door opening
Strengthening door openings by a chawler
This option is the most popular, as it is suitable for most brick and concrete bearing walls. It is known that the latter cannot be dismantled or in any way to change their operational qualities. Modifications of doorways are just under the action of such restrictions.
Strengthening door opening channel
A chamber design When dismantling a part of the base compensates for a reduction in the carrier load. This option decides several tasks at once:
- preserves the carrying capacity of the overlap;
- Warns the wedding or cracking of the wall;
- increases the burglary resistance of the structure by increasing the strength of the base;
- Allows you to install the door of the desired design and type.
Such work is performed by experts, as hardening requires the use of special equipment, and rates depend on the scope of work and the nature of brick or concrete wall overlaps. Companies offering such services immediately make up the estimate in the parameters of the doorway.
Corners create a solid connection
Strengthening a channel and a corner
In general, this is a P-shaped frame, welded from channels. It is noted that this option is suitable for relatively narrow walls. With their large thickness, which is not uncommon in old houses, the frame is constructed from the corners and mounting plates forming the control.
Additional amplification of carbon fiber
The overall work scheme is as follows.
- Inspect the doorway, it is calculated by the required strength, based on the degree of modification of the ceiling and the weight of the installed door block.
- Dismantled by opening with a punch - perforator or grinder, or sharp. The first is somewhat cheaper, work can be done on your own. Diamond cutting is performed by a special tool. This, first, guarantees dismantling the material of any degree of strength and hardness, and secondly - allows you to get smooth base edges and do without a rapid of brick, alignment and plastering.
- The design of the channel is welded in size and is transported by the consumer in the finished form.
- A chamber frame is fixed with chemical anchors or steel pins, and on the floor is fixed with welding to thick metal plates - support heels.
- The metal-rolled configuration is quite specific, therefore, the frame is installed in the cement solution. Before that, on the surfaces make notches to improve the grip of the brick and the solution.
- With anchor mounting for fasteners, the holes are pre-drilled, filled with a polycemental solution and pinned metal pins. Pre-calculating the frequency of fasteners based on the weight of the door block.
- If the installation is performed on chemical anchors, then in the drilled holes, first placed a capsule with special glue, and then an anchor bolt. In the photo - installation of a chawllar frame.
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With very wide brick walls, a doorway is reinforced with a corner. To make such a structure more durable, the corners are additionally bonded by horizontal crossbars.
Prices of work vary in fairly wide limits. In addition to work itself, the estimate includes the disassembly of the opening, and plastering wall overlaps.
Wide opening
Strengthening the opening in the drywall
Strengthening the opening in the bearing wall to some extent is a relatively simple procedure.
But to do the same in a plasterboard partition or the wall of foam blocks, you need to use other techniques.
- First of all, the calculation of the intended load taking into account the possibilities of the walls.
- The amount of material required is determined and the estimates are compiled.
- On the sides of the window or doorway, the shoes are prolonged and the reinforcement rods are laid in it.
- The tops are also cut into the foamclock and set the transverse jumper, that is, in fact, the P-shaped structure is formed.
- The reinforcement is not welded - the design is poured with a mortar.
Rates for strengthening are also determined by the scope of work. It is possible to reduce the cost of the service, since reinforced concrete jumpers of this kind are sold ready, but only standard sizes.