Do-it-yourself fixed formwork

Fixed formwork Table of contents:

  • 1 Distinctive features of the constructed structures
  • 2 Designs
  • 3 Foundation technology
  • 4 Nuances during the work
  • 5 videos

Recent evolutionary changes in building technology pass with high intensity. Introduced innovations contribute not only simplify the procedure for the construction of buildings, but also allow you to equip a solid foundation for any structure. how confirmation of this fact fixed formwork for the foundation, the arrangement of which provides many advantages over classical methods of construction of supports. In most cases named support structure is made of polystyrene foam blocks, which minimizes human intervention in installation process.

In this article we will tell you how to make fixed formwork for do-it-yourself foundation, consider various options as well We will demonstrate visual photos and video instructions.

Distinctive features of the constructed structures

Distinctive features of the constructed structures

The construction of buildings with fixed formwork – option, used for over 10 years. It is worth noting the fact that after such a significant period the principles of arrangement foundations for buildings have not undergone major changes, but work time and construction stages were halved. If previously the construction process included the acquisition, assembly frame, its fixation in the prepared trench and subsequent dismantling, the method of fixed formwork provides exclusively assembling prepared components and filling concrete.

In any construction event before use innovative working methods should understand the benefits and disadvantages of its use. So, the defining virtues in the investigated option are:

  • water resistance of elements;
  • high seismic resistance impacts;
  • fire resistance;
  • easy installation and quick erection;
  • resistance to the development of mold and fungal formations;
  • low specific gravity;
  • high thermal insulation properties;
  • tightness.

Ready block concrete fixed formworkFinished block concrete fixed formwork

Like every building element, fixed formwork has some cons:

  • difficulties with transportation;
  • single use.

Design Varieties

Design Varieties

To begin research on how to do own fixed formwork, it is worth sorting out features of the use of a particular material. Using various formwork options is determined by the complexity of the erected projects and the purpose of the future design. As a rule, with the construction uses products made from the following raw materials:

  1. Expanded polystyrene (gas-filled polystyrene) – has long been standard, but not the only way to test in action new technologies. Blocks made of this material have high strength, high thermal insulation properties and optimal reliable ventilation characteristics ventilation.
  2. Shchepocement – a little losing in breadth of application, this material provides high-quality sound insulation. Distinctive feature – the presence in the structure of air bubbles or pockets, which increase practicality by a few points. However, the processing of special chemical compounds of wood prevents premature decay and gives material high resistance to high temperatures.
  3. Fiberboard is a material consisting of wood chips (fibers) and inorganic binder. This raw material is famous for its resistance to temperature extremes and high throughput.

ShchepocementChip cement

In the question under study, one cannot fail to mention such a procedure, as “concrete rental”, the use of which allows to produce universal block designs of any necessary form. Essence the method consists in the use of patterns and rollers, thanks which is the extraction of pores and compacting concrete.

Expanded polystyreneExpanded polystyrene

However, to optimally mitigate the sharp contrast temperature flows and pressure reduction on solid structures in the case of the construction of walls and support bases is widely used manufacturing technology of fixed formwork from expanded polystyrene.

The popularity of this method is due to a number of features:

  • the similarity of the structure with a cork tree;
  • resistance to destruction;
  • excellent thermal insulation properties;
  • the material is easy to process;
  • affordable price indicators.


In any case, it is important to consider individual characteristics. use of this or that material. Each method has a number of advantages and disadvantages. Before applying any of them evaluate each characteristic and make the best choice. It will be useful to seek the advice of specialists.

Foundation Technology

Technology of arrangement of the foundation

The process of erecting wall structures and foundations in the way gas-filled foam formwork is intuitively simple and does not require special knowledge.

Before performing all work, it must be remembered that the formwork for the foundation is installed on a solid foundation (substrate), the surface of which is covered with a reliable waterproofing layer.

The fixation of each subsequent block is realized through their dressing on prepared reinforcing bars. Finished with the first layer, horizontally overlap in the grooves of the row additional reinforcing bridges and are reliably fixed at help of wire twists.

Twisting for fixed formworkTwist for fixed formwork

The construction of the first row must be treated with increased sense of responsibility because of the precision produced calculation and correct installation depends on the duration of the period operation of the entire structure and the smooth outlines of all faces. Besides of this, precisely during the execution of the named procedure according to outlines the door slopes and surfaces internal connecting beams.

Fixing forms of formwork blocks is carried out in the process installation of the second row, the installation of which ensures reliable vertical fastening of subsequent seams.

When installing the third and subsequent layers, do not forget about vertical seams. Having finished installing all the block elements, proceed to pouring the resulting concrete cavity solution. The next step is to seal the flooded mass for air gap exclusion. To do this, use special equipment – deep vibrator or improvised means – a piece of reinforcement, evenly distributing concrete over erected formwork.

Concreting of fixed formworkConcreting fixed formwork

During the installation of blocks, it is important to track the most accurate coincidence of the side faces. The installation process is somewhat reminiscent of brick laying process, in which each successive row shifts to half its size. Doing work like that the method subsequently gives the required rigidity.

Nuances during the work

Nuances during the work

The manufacture of fixed formwork, like any building operation has its important features. Most people torment the question of how is the required strength achieved and durability of the constructed support. Based on a rich construction experience, many masters advise filling the top row of formwork half so that the resulting concrete seam is located inside factory blanks. Along with this, do not forget about quality, class of concrete and reinforcing bars.

Before carrying out assembly work, formwork should be carried out preparing the holes necessary for the functioning of ventilation, conducting electricity, sewer and heating systems. To do this, in advance in the designated places, grooves are equipped, appropriate sizes.

The result is a kind of puff cake whose “filling” consists of reinforced concrete. In this wall structures become warm and do not require additional warming.

House of fixed formworkHouse of fixed formwork

In conclusion, I would like to note that during the construction of a fixed polystyrene formwork no rigid sizing future foundation. The use of this material provides easy handling and fitting of elements with minimal effort and time costs. The only thing – do not follow on your own change the thickness of the factory unit, since this is a circumstance may lead to violation of strength and loss of thermal insulation properties. In addition, upon completion of all installation work not forget about processing the outer layer of foam.


The video provided provides more details about technologies for the manufacture of fixed formwork:

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