In time or after repair in the apartment or the house, various types and models of dowels and anchor bolts are applied to fastening of different objects to wall and ceiling (chandeliers, sconce, suspended cabinets, regiments, mirrors, supports, etc.). Any specific type of dowel is chosen depending on material of wall and ceiling, weight of the fixed subject, static or dynamic load on it. The ratio of diameter of dowel and diameter of drill which the opening under it becomes is of great importance.
It is required to you
- Caliper
Instruction
1. For fastening of easy objects to reinforced concrete or brick wall choose dowel shock (it is fast mounting) as with a diameter of 6 mm, drill pobeditovy, diameter of 6 mm, length of dowel depends on thickness of wall of the fixed subject in fixing point. In wall the dowel has to come on 40 mm, into ceiling - on 60 mm. The quantity of dowels – is not less than 2 pieces. For fastening of averages on the weight (5 – 10 kg) of objects to reinforced concrete or brick wall use dowel shock with a diameter of 8 mm, drill pobeditovy 8 mm, in wall the dowel has to come on 60 mm, into ceiling - on 80 mm. The quantity of dowels – is not less than 4 pieces.
2. With static load (suspended cabinets of the big sizes, supports under the TV, etc.) to reinforced concrete or brick wall apply dowel to fastening of heavy objects shock with a diameter of 10 mm, drill pobeditovy 10 mm, in wall the dowel has to come on 60 mm, into ceiling - on 80 mm. The quantity of dowels – is not less than 6 pieces. For fastening of heavy objects with heavy dynamic load (steps of ladder, the Swedish wall, horizontal bar) to reinforced concrete or brick wall use anchor bolts with a diameter of 8 mm, drill pobeditovy 8 mm. In wall the bolt has to come on 60 mm, into ceiling – on 80 mm. The quantity of bolts – is not less than 4 pieces.
3. There are two main types of anchor bolts: nut of bolt to be in the first outside of wall and after installation drags on horn, face or flare wrench. Apply such bolts if the place of fixture not probably or then is closed by any decorative pad. In the second type of anchor bolts the self-locking nut is inserted into wall. Such bolt twists the cross screw-driver with the PH No. 2 or No. 3 profile. Use this type of anchor bolt if the place of fixture probably. There are two-stay anchor bolts, they "keep" in wall much stronger if there is opportunity, put them. In houses of old construction the walls and partitions made of gipsoblok can come across. Good fastening to such wall is problematic as this material is fragile and easily crumbles. For creation of fastening use nylon dowel with a diameter of 10 or 12 mm. In wall chuck in dowel depth of 60 mm. You drill opening pobeditovy drill which diameter is 2 mm less than diameter of the applied dowel as the drill strongly "breaks" opening in this soft material.