The foundation of the FBD blocks - for those who need to build quickly and reliably

Meet the "many-sided" foundation blocks FBS

This building material is concrete "bricks" of all sizes, reinforced on the inside of the reinforcing cage.They are made in the concrete factories to exacting approved for the production of "recipes", all products receive the appropriate marking GOST.

Three letters "PBS" in the product code means that before you concrete block foundation wall type (solid and without holes) rectangular shape.The range of factory production concrete can pick up and other elements for the construction of the building foundation: U-shaped - FSF, with holes - FB, pillow-blocks - PL.There is a standard set of each group of products with clearly defined parameters and the degree to withstand loads.

All linear characteristics w / w block hidden in the digital code.For example, FBS-12.6.6 - means that this solid foundation wall unit 120 cm in length (12), width and height of 60 cm (6.6).

Technical properties are indicated for the whole lot of products, and are expressed by three indicators:

• density;
• strength;
• frost.

When the construction of the foundation of the FBD blocks requires special sizes and technical properties of the material, the developers bought the enterprises own party "cubes" with the necessary parameters, and "stuffing".

Now touch features work with this concrete-products.Installation of foundation blocks is performed according to the rules of masonry: bandaging joints adjacent rows, the correct orientation of the elements relative to each other.Especially carefully laid the first reference a number of elements for which necessarily involve strictly horizontal mounting platform.

Laying foundation blocks is conducted in sand-cement mortar or special adhesives.More often than not prefer the first embodiment of the binder, mixing before use directly at the work site.masonry blocks on the glue will cost more, but there is no confusion with the selection of the components for optimal prescription of the working solution.The dry mixture is diluted with water to a specified proportion of the manufacturer.

All the pros and cons of the construction of the foundation blocks of FBS

list of positive qualities of the foundation blocks FBS quite impressive:

• speed construction. fact, the foundation of the foundation blocks - this is advance the cut into pieces monolithic sole, elements of which can be quickly folded into the desired geometric shape.
• Reliability .Working parts are constructed in the factory, where all the stages of "birth" material control "smart" machines.Calculation of foundation blocks (density wire mesh, solution recipe) - also a permanent and unchanging constants for each product line.
• versatility. From factory foundation blocks you can assemble the base of any complexity.Building material is used for the arrangement of huge high-rise buildings and small buildings.The range includes products for mechanical and manual work team of builders.
• Reasonableness. Massive foundation blocks feature a special hinge system, which facilitate mechanized stacking elements in the pit.Products of the same caliber fit together, they provided mounting grooves for tight connections.
• Stress resistance.Elements flavored special additives suitable for use in acidic or "ice" soils (e.g., permafrost).For an accurate calculation required for the construction of foundation blocks using standard tables approved in SNIP.

Now go through the drawbacks of speed "sole", in order to objectively assess the benefits of this method of construction.Installation of foundation blocks FBS fraught with such difficulties:

• Expensive. Columnar or ribbon assembly foundation will cost an average of 35-40% more expensive than the monolith.Over speed will have to pay solid.
• hydroprotection. After installing the foundation blocks should always perform their thorough waterproofing (double layer).Team "sole" very restless reacts to the excess moisture.
• Warming. Seams masonry additional protection from the "freezing", because the extra "stress" detrimental to the binder solution.For example, polystyrene foam insulation of the basement masonry perfectly protects the weak places and prolong service life of precast foundation.

illustrative example: pier foundation of the blocks with their hands

course, move the huge foundation blocks with their hands - it is impossible.But there is an optimal size samostroya concrete cubes 20/20/40 cm, weighing only 30 kg.That they are used for high-speed construction of pier foundation (pedestal 40 × 40 cm) under the light structure (the log bath, garage, shed, etc.).Installation

PBS blocks popular for this type of "sole" thus performed:

1. Dig desired number of holes under pedestals (depending on the weight of the building), carefully align their depth.
2. At the bottom of the filter stack "cushion" of 15 cm and 5 cm of sand gravel.Layers thoroughly tamped, align and pour mastic asphalt (2 times).At this stage it is important to double-check the depth of the pits again.
3. butt Install two "cubes" PBS, cementing them together sand and cement mortar (seam thickness - no more than 10 mm).
4. Installation of the next row of foundation blocks executed by the bar system of masonry, ie perpendicular to the first pair of elements.
5. The process continues until the desired height of the columns.To test their level of use of the marking between wells strung ropes.

This method allows for a single day to build a foundation for building light and after 2-3 days after the finish (waterproofing, insulation) to continue further construction work.