How to fix the anchor

Anchors: their effectiveness and variety

more new acquisition for builders of steel dowels made of plastic, which have a small size, low cost and strong hold.But soon begin to deform the plastic dowels and no longer fixed mount, especially for monolithic concrete walls, which simply does not hold plugs.

was therefore clearly established the most reliable method of securing - anchor, which can withstand the load, and, like an anchor, seizes coverage, not allowing to break the attachment.

anchor not only in tune with the word "anchor", it is similar to and functions: retention mechanism on the bottom of the hole.

Bolts are divided into two types according to the type of mind of their use:

1. synthetic.The principle of its operation is based on the use of a special adhesive capsule which is disclosed during the screwing of the fastening bolt and secure it directly at drying of the adhesive.

Minus synthetic bolt: expectation, when the glue dries.

Plus: not only suitable for solid walls, for light wall constructions.

1. metal.The principle of its action consists in the fact that the metal sleeve that is placed on the bolt, expanding or riving during winding on the thread.

Also, these bolts have several divisions into types:

ü Shnipovoy.At the end of the anchor is Shnip (wedge), which pushes the sleeve during its screwing into the hole.Instead of the wedge can be rod-beard, which riving sleeve, and then removed from the hole, where, after a pin screwed.However, for this type of work must be the exact observance of the anchor and hole sizes.

ü clamping.The basis for its action is to disclose attachment lobes which occurs during tightening of the sleeve and deformation of the medium.It also has a small slot on the all length.These bolts are suitable for thin wall construction, such as gypsum.

ü hammered.This type is used without the use of special tools.Sama bolt sleeve has soft edges that while driving in the hole begin to deform and the rest on the bottom.This leads to the fastening sleeve in the opening.Suitable bolt for monolithic walls and rough stone, but pay more attention to the accuracy of the depth and hole diameter.

ü crushing (spacer) - the most common method of attachment that does not require strict adherence to the depth and diameter of the hole.During screwing sleeve extends from the rear part by screwing it konusopodobnuyu sleeve.Bolts are used for brick and concrete walls.

Screwing the anchor bolt: User

To mount the anchor was quality, metal products must be purchased with corrosion-resistant coating, for example, the M-30.

also necessary to understand that each compound has its own parameters for the hole and the rate applied force for screwing, which depend on the characteristics of the wall covering.For heavy concrete depth of screwing the bolt is 8 cm and the load is less than 7 kN.For a thin concrete these parameters half.

The instructions consider gradually crushed mount (spacer) of the anchor in the concrete wall.

Step 1: Determine the length of the bolt

walls are often covered with trim, such as plaster.To bolt is well entrenched in the wall, it should be placed at a depth of more than 5 cm. Because define anchor sleeve length for the thickness of the plaster.

Step 2: Determine holes

required diameter sure to follow the diameter of the holes for the anchor, because of its accuracy depends on the efforts made to fit the sleeve.The hole should be such that the sleeve is included tight and strictly perpendicular.As for the depth of the hole, it must be greater than the length of the bolt by a few millimeters.

Step 3: Marking holes and punching

bolt holes should be made as accurate as possible, because after installation you can not pull out.Then drill a hole and clean it from dust and debris.Clean with a vacuum cleaner, you can, blowing a rubber bulb or a brush.

Step 4: plugging

anchors into the holes with a hammer hammer anchor.This should be done slowly and forth motions.After the sleeve nut or the head would have a wall surface, proceed to a twisting.When tightening after two rotations necessary to put more effort.The box can be specified number of twists and it is better to use a torque wrench.

Note thin, foam concrete or brick wall is better not to tighten the anchor until it stops.

Step 5: Check the accuracy of

dive When tightening the bolt or nut is often cap get in the top layer of plaster.Gadget better deepen into the wall, but the cap is to leave exactly at the surface of the wall.Video in the next tab shows how to attach the anchor to the concrete wall.