How to choose a drill and dowel
During or after the repair in the apartment or house for fastening different objects to the wall and ceiling (chandeliers, sconces, hanging cabinets, shelves, mirrors, coasters, etc.) used a variety of types and models of anchors and anchor bolts. Any particular type plugs selected according to the wall and ceiling material fastened weight subject to static or dynamic loads on it. Of great importance is the ratio of the diameter of the dowel and drill diameter, which is a hole under it.
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Instruction how to choose the drill and dowel
To fix light objects to concrete or brick wall, select the anchor stroke (also known as quick assembly) with a diameter of 6 mm, Drills with a diameter of 6 mm, dowel length depends on the wall thickness of the object fastened to an anchor point. The wall plug must go to 40 mm at the ceiling - 60 mm. Number of dowels - not less than 2 pcs. For fixing the average weight (5 - 10 kg) objects to concrete or brick wall using dowel impactor diameter of 8 mm, Drills 8 mm, wall anchor must extend to 60 mm at the ceiling - 80 mm. Number of dowels - not less than 4 pieces.
For fixing of heavy objects with a static load (hanging cabinets larger, stand under the TV, and so on) to a concrete or brick wall, use anchor shock diameter of 10 mm Drills 10 mm, wall anchor must extend to 60 mm at the ceiling - 80 mm. Number of dowels - not less than 6 pcs. For fixing of heavy objects with a high dynamic load (stairs, wall bars, horizontal bar) to a concrete or brick wall, use anchor bolts with a diameter of 8 mm, 8 mm Drills. The wall bolt must extend to 60 mm at the ceiling - 80 mm. Number of bolts - not less than 4 pieces.
There are two main types of anchor bolts: in the first nut screw located outside the walls and after the installation is delayed open-end, socket or ring spanner. Such use bolts if mounting space is not visible or is then closed a decorative plate. In the second type of anchor bolts self-locking nut is inserted into the wall. This bolt is twisted Phillips screwdriver with the profile of PH №2 or №3. This type of anchor bolt use if seat fasteners visible. There dvuraspornye anchor bolts, they are much stronger than the "stick" in the wall, if possible, put them. In old houses may come across walls and partitions made of gipsobloka. Good attachment to a wall is problematic, since this material is fragile and easily crumble. To create a fastening dowel diameter using nylon 10 or 12 mm. In the wall of the dowel hammer to a depth of 60 mm. Drill a hole pobeditovym drill bit with a diameter of 2 mm smaller than the diameter dowels used as drill much "breaks" a hole in the soft material.