When to remove the formwork from the foundation and the ceiling - the construction dilemma

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When to clean the formwork - what are we dealing with?

When talking about the construction of a building or structure, you hear the arguments about the type of foundation on which the building is erected, than this foundation is better than others. But for some reason, in such conversations, such an important technological stage of construction as the construction of a formwork for pouring the foundation is always omitted.

Formwork is a special construction, which is a set of blocks fixed in a certain position to create a strong frame for pouring concrete or reinforced concrete. This structure remains in the locked state until a concrete or reinforced concrete panel is formed.

For the erection of these structures, various materials are used:

  1. wood;
  2. metal;
  3. expanded polystyrene.

In terms of its functional purpose, formwork can be:

  1. for foundation;
  2. for interfloor floors;
  3. for walls;
  4. for monolithic construction;
  5. for mine floors.

After how many days to remove the formwork from the foundation - there is no definite answer

Due to the fact that the foundation of the building performs somewhat different functional tasks than the walls and ceilings, respectively, and the requirements for the formwork for the foundation of the are much stricter. It should be made of reliable and safe materials, as well as meet all the standards and requirements for the construction site.

The structure for the foundation is made of reinforced metal frame and plywood deck. It is on the boards and the main load is at the time of laying the foundation. The use of modern technologies allows the production of shields, so that the formwork is able to withstand any concrete pressure without deformation or fracture.

When implementing private house-building, the most popular question on the forums: when to remove the formwork from the foundation? It is very difficult to answer this question. According to construction standards, concrete is gaining its strength in 28 days. But this does not mean that he must stand all this time in the formwork. Everything depends on temperature, humidity, etc. Experts on the question: after how many days to remove the formwork? They advise not to hurry and carry out the process of dismantling not earlier than 10 days after the foundation is poured.

When to remove the formwork of the flooring - let's outline the approximate terms

Increasingly in high-rise and private low-rise construction in the form of overlapping, a horizontal monolith begins to be used. And the question of the availability and use of support structures for floors is becoming very acute. Modern formwork of floors provides great opportunities for the formation of structures of any complexity, which is very important for industrial and residential construction.

Using the horizontal formwork it is possible to form boards, different in width, length, and thickness, which developers and contractors can not ignore. This structure consists of a support post, a tripod, a universal fork and an I-beam. The latest modifications allow solving successfully many tasks of high technological level, which is used in monolithic construction.

In addition, the use of horizontal formwork allows significant savings in the construction of construction sites. Since this species was massively applied relatively recently, the question of when to remove the formwork of overlapping is set even by qualified builders.

To correctly answer the question: after how many to remove the formwork, it is necessary to know in the winter or summer work is carried out. When monolithic construction in the summer, it can be removed after 3 days, and fully loaded after 21 days. If the construction is carried out in the winter, then everything is very individual and at different sites there may be different periods of dismantling.

When removing the formwork - we proceed to work

Having finally decided on the time after which the formwork is removed, and after waiting for the deadline, it is possible to proceed directly to the dismantling of this equipment.

If the process of setting the formwork is scrolled in the opposite direction, it becomes clear how to perform the formwork of the equipment. In order to avoid damaging its parts during dismantling, it is advisable to think about the options for removing structural elements from the finished concrete slab already during the installation of this equipment.

It is possible to remove formwork only when reinforced concrete has gained the necessary strength. This is an important condition, becauseIf the concrete is wet, then when perceiving the loads acting on it, unacceptable cracks can form in its body. The answer to the question, how many can be removed formwork, is given in the building codes. But sometimes, depending on the natural conditions, the time for dismantling should be extended. The main stages of the work :

  • When dismantling, the towers, tours and support racks are removed in the last place, becausethey support the rest of the structure.
  • It is necessary to remove the tightening wire or unscrew the fastening bolts, and then separate the boards with the posts.
  • It is necessary to begin dismantling of the formwork elements from the upper structures in the direction towards the lower parts.
  • First, detach the gripping ribs, then carefully separate the structural panels themselves from the concrete.
  • The whole process, starting with the hardening of concrete and the dismantling of the first non-load-bearing elements, before the removal of the columns and towers can be delayed for a week.

We hope that after reading this article questions about when to clean the formwork and how to do it properly, it will become much less. And a house built using all this knowledge will stand for many decades.

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