Catchers fittings: how to protect concrete

Catchers fittings. About the factory default varieties and homemade products from the participants of the portal

A rare construction dispenses with the manufacture of concrete, whether foundation tape, stove, ceiling or walling. Regardless of the application, the reinforcing cage to be protected from the external environment to the monolith has served his sentence and did not fail prematurely. This ensures protection of a uniform layer of a certain thickness of concrete on all sides, with the proviso that it is, and it is enough. To precisely set the frame to observe the plane and to achieve the desired thickness of the concrete, relatively recently there were special plastic clamps valves. Our craftsmen use these transoms and improvised ways, and in some cases are not inferior homemade factory prototypes.

Content

• The main varieties of fasteners and Scope
• "Antiquated" methods: bricks, rods, stones
• Plastic pipes as fixatives
• Concrete clips: how to make your own

The main varieties of fasteners and Scope

Clamps valves, also called Stand armature (also known as spacers or limiters), designed to hold the reinforcing cage, rods or nets on desired height, at a predetermined position without distortions and shifts to uniformly formed around the protective concrete layer (distance from the surface to the edge reinforcement construction). Insufficient or no bald spots layer, through which the iron is in contact with moisture, This significant reduction in the term of service of the monolith, the risk of deformation and deterioration of strength characteristics. Too thick layer - is unreasonable perezakladku entailing increase in construction costs.

Thickness of AP depends on the type of concrete structure, the reinforcing parts of the functional (or operational design), and also on the type of valve and its cross section. But the statutory minimum - not less than 1 cm and not less than the cross section of the reinforcing bar, regardless of the other conditions. In a particular construction, the following rules on the thickness of the AP:

• Inner concrete structures, and monolithic portions overlap - 20 mm (25 mm at high humidity).
• Cnaruzhi, without additional protection - 25 mm.
• In the ground without extra protection - 40 mm.
• The foundations, without additional protection (footing, ASG layer) - 70 mm.
• The foundations, with a protective layer - 35-40 mm.

Is made of durable plastic clips, which could not be corrosion resistant to temperature fluctuations and chemical environment of the concrete. All the latches are divided into three groups - for horizontal mounting, for vertical mounting and universal, and determines the specific application form. Several major varieties, plus variations within each species:

• "Chairs" - locks the horizontal type, for a single layer used in foundations, screeds, plates Overlap ordinary chair is designed for fitting to a diameter of 16 mm, reinforced by reinforcement chairs suitable for 25-30 mm.
•  "Rack" - are horizontal and the generic type with a large range of dimensions (creating a layer of 15 to 40 mm), the rack can be used in different positions, in addition, produce "high-rise" racks, which are set against each other, to increase layer thickness.
• "Sprockets / wheels" - universal retainer is a ring with teeth of different diameter, in the center of the clamping lock, which allows the valve stopper, both vertically and horizontally. Mostly used when pouring walling, columns, pillars, with the armature section of from 4 to 20 mm.
• "Cubes" - horizontal tabs, comfortable its multifunctionality, one die gives four different layers (35-80 mm), depending on the side of the housing. The diameter of the valve - from 4 to 32 mm, the scope of application, as in highchairs.
• "Bone / butterfly" - is also horizontal stand, allowing layer thickness change setting to a specific direction, the diameter of the valve - from 25 to 40 mm.
• "Support" - round, square or rectangular horizontal tabs, allowing a layer of 25 to 80 mm, the valve 4 to 32 mm. Bulk substrates - special reinforced supports with larger diameter circular platform. Also produce individual support (substrate) under the clamps mounted on loose grounds.

Average consumption of fasteners per 1 m is from 5 to 10 pieces, the heavier the frame, the greater the need of support for him. If the filling is assumed over insulation selected tabs without sharp legs to not pressed through, or are used for loose soils.

Properly selected and installed the latches do not move and do not break even when traveling on the frame when pouring.

amarrak

Member FORUMHOUSE

Normal clamps do not break when installed properly. They need to stand upright, as are efforts to retain "top down". If efforts will be in the side, they can cut the fixture or "antennae". I on the fixture installed on the retainers, ran by pouring five people.

With all the advantages of plastic consumables, it is an additional cost item, and many samozastroyschiki, including our craftsmen prefer to do homemade products. Some of them are quite viable, and some in the monolith is not a place.

"Antiquated" methods

Brick - ceramic, silicate, broken pieces of identical halves, whole kirpichiny - not an option, at least for two reasons:

• Dimensions - difficult to chop a brick on the same small fragments as large pieces too bulky, which will affect the layer.

Bosfor 642

Member FORUMHOUSE

Chairs is a good thing, I put myself and I do not regret winning the strict observance of the protective layer of concrete - bricks "eat" more layer of concrete waste.

• Hygroscopicity - even ceramics, not to mention the silicate, it absorbs moisture and will transfer its fixture.

Reinforcing rods - many use stuck vertically in the ground rods to tie the frame to them, this method is even faster than the brick, it will lead to corrosion.

Valery 65

Member FORUMHOUSE

The fitting must be sealed in concrete, if it is at least one edge is in contact with the water, then it will enter the moisture in the concrete, and the concrete will crumble.

In a situation with the pins will go direct suction of moisture from the transmission to the reinforcing cage on the entire plane.

Stones, pebbles of approximately the same size - quite workable option as a support, but when casting the frame may move and become distorted. Observe the layer thickness is more difficult, but at least it will not be humid. If we are on the sandstone, the lamellar structure facilitates the laying and better hold the valve, but the moisture it absorbs even more bricks, so you will need a waterproofing layer.

Pipe alternative

Plastic tubes - can choose any pipe diameter and thickness depending on the type of substrate, cut into the desired length to make a secure fixation even slots for the reinforcement section. This method is in demand among our craftsmen, as both the layer thickness is maintained, and the parameters of the monolith are not impaired.

Gelo

Member FORUMHOUSE

You can bet on cutting 50 mm plastic sewer pipe can be cut at the height of what is required.I got about 4-6 pieces per meter of belt width 40 cm, 12th fixture (8 threads in the collar).From sinking into the sand I insert pieces of roofing material.

The pipe can be more.

efh

Member FORUMHOUSE

I used the trim 100 mm sewer plastic pipe, about 7-8 cm in height and sawed set.

Or less.

Winder

Member FORUMHOUSE

Pipe slice from PND 32 or 40 mm rings desired height and vertically to cover them putting for canning. On gravel cover is usually not needed.

Concrete clips: how to make your own

Like plastic, concrete fasteners are industrial production, but used mainly for large objects and selling them hard to find. However, on their own produce such support may each, if you have time to mess around with forms, filling and drying. Some do not bother with the molding and make "blotch" from a solution or spread directly on the cone place, but still better to spend the time.

Concrete stands usually of two types:

• Rectangles - pouring into a mold or cutting into cubes uncured solution;
• Kruglyashi - fill in cutting plastic pipes, it turns flat terrain or fill in the bottoms of plastic bottles, obtained also slots for the rods.

If you insert a wire into the concrete, will receive not only the support, but the real catches of reinforcement.

navashino

Member FORUMHOUSE

Look Anton Weber video, there is the process of making concrete fasteners to AP. Collect formwork rectangle rigid pour concrete or sand concrete, until the solution was grasped, insert the loop of the binding wire, cut into squares weight (5-7 cm). After hardening of concrete shakes out from the mold and break on the slots.

The efficiency of the method is confirmed.

AndrShurupovert

Member FORUMHOUSE

Yesterday tried to make a pilot batch, today was pleased with the result, the first emptied the cubes for a day in the water, he made the following workpiece.

Winder

Another good way is to cut the bottom of a plastic bottle from the simple (a hilly terrain), fill it with hard solution (Not enough water) and as a child kulichiki of sand, spread on a flat base, the laid film, a few days stand ready.

What to do.

maratovich

Member FORUMHOUSE

We stand not for sale and not sold ever. Peter brought from 25-35 mm pedestal and a check in the garage, they are too small, the forum came across mention of the fact that it is possible here as a child, to sculpt. Blinded.

Output

Use clamps or purchased spare and prefer homemade, plastic, or concrete, the main thing - to withstand layer and protecting your monolith from destruction.

Useful tabs and pouring homes - for example, of monolithic foam, And for concreting directly into the ground not do without them. If we talk about technology permanent shuttering, The most commonly used plastic pipes, they protect the screed and a layer helps to sustain. In the video - the nuances of reinforcement works.

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