During or after repair in an apartment or houseFor fixing different items to the wall and ceiling (chandeliers, sconces, hanging cabinets, shelves, mirrors, coasters, etc.), various types and models of dowels and anchor bolts are used.
Any particular type of dowel is selected depending on the material of the wall and ceiling, the weight of the object to be fixed, the static or dynamic load on it.
Of great importance is the ratio of the diameter of the dowel and the diameter of the drill, which makes a hole under it.
You will need
For fastening light objects to reinforced concreteOr a brick wall, select the dowel drum (which is also a quick assembly) with a diameter of 6 mm, a drill bit, a diameter of 6 mm, the length of the dowel depends on the thickness of the wall of the anchored object at the fixing point. In the wall, the dowel should go 40 mm, in the ceiling - 60 mm. The number of dowels - at least 2 pcs.
For attaching medium to heavy weight (5 - 10 kg)Objects to a reinforced concrete or brick wall, use an 8 mm dowel, a 8 mm drill bit, 60 mm in the wall, 80 mm in the ceiling. The number of dowels - not less than 4 pcs.
For fastening heavy objects with staticLoad (large pendant cabinets, TV stands, etc.) to a reinforced concrete or brick wall, use a 10 mm impact dowel, a 10 mm drill bit, a 60 mm dowel in the wall, and 80 mm into the ceiling. The number of dowels is not less than 6 pcs.
For fastening heavy objects with largeDynamic load (steps of a ladder, a Swedish wall, a horizontal bar) to a reinforced concrete or brick wall, use anchor bolts with a diameter of 8 mm, a 8 mm drill bit. In the wall, the bolt should go 60 mm, the ceiling - 80 mm. Number of bolts - not less than 4 pcs.
There are two main types of anchor bolts: In the first nut of the bolt is located outside the wall and after installation is tightened with a carabiner, end or spanner. Such bolts should be used if the fastening site is not visible or is then closed with any decorative cover. In the second type of anchor bolts, a self-locking nut is inserted into the wall. This bolt is wound with a Phillips screwdriver with PH profile No. 2 or No. 3. This type of anchor bolt is used if the fastener is visible. There are two-way anchor bolts, they are much stronger "hold" in the wall, if possible, put them.
In houses of old construction, walls andPartitions made of a gypsum plaster. Good fixing to such a wall is problematic, as this material is fragile and easily crumbles. To create a fastening, use nylon dowels with a diameter of 10 or 12 mm. In the wall, plug the plug to a depth of 60 mm. Drill a hole with a winning drill, the diameter of which is 2 mm smaller than the diameter of the dowel used, as the drill severely "breaks" the hole in this soft material.