Due to the deterioration of the ecological situation, pollution of rivers, lakes - the pool on the site, in hot summer time, is a source of coolness and an assistant for maintaining health. One of the options for building a street pool is the construction of a concrete pool bowl, which can later be ennobled with a film or tile.
Content
Choose a place for the pool
Choosing a place for the pool, we consider the following conditions:
- the place should be open to the sun for the maximum time during the day;
- the absence of large trees near the pool, since a large tree not only creates a shadow, sheds foliage and clogs the pool, but also the roots of a large tree, can damage the pool, etc.
Basic principles for the construction of a quality concrete pool bowl
It is necessary:
- if the concrete pool bowl is installed directly next to the house, the pool bowl should be at a height no lower than the foundation of the house, but the foundation of the bowl and the house must be divided among themselves;
- if you build a basin basin buried in the ground, you do not need to use the excavated soil as a backfill, since the soil can cause movement during freezing and in the piping, in the cold, cracks may form;
- use sand as a backfill;
- if groundwater is high, drainage system must be installed;
- if the groundwater is low, the outer waterproofing of the basin is quite acceptable.
As a waterproofing, it is possible to use hydroglasses or bituminous mastics;
- as for the pouring of the pool bowl you need a large amount of concrete, you need to take care of the access roads for the car with concrete;
- if the entrance of a concrete mixer is difficult - order a concrete pump;
- so that the concrete bowl is of high quality, it is necessary to compact the concrete mixture, and this requires buy vibrator for concrete or lend, or rent.
Roem pit for the pool
After determining the location of the pool, make a layout of the terrain and layout of the future structure.
To the width, length and depth of the future basin, it is necessary to make a tolerance for the thickness of the future bowl.
After removing the soil from the ground, seal and level the bottom, the future bowl.
Lay out the bottom should go with strict horizontal lines, use the building level.
If the bottom is broken, you will end up with a distorted water mirror.
After leveling, the bottom of the future basin must be made sand-gravel, at least 20 cm thick.
Reinforcement frame of the future concrete pool bowl
On top of the sand and gravel dumps, to isolate from groundwater, lay the waterproofing so as not to damage the waterproofing when installing the reinforcing cage, make a thin protective screed made of concrete, 2-4 cm thick.
For the reinforcement to be done correctly, follow the advice of professionals:
- connect the reinforcement between the wires and do not use welding. Since in places of welding, corrosion will occur in the future. Welding weakens the metal. If the reinforcement can not move due to hard welding, then when pouring concrete into the frame of your pool there will be large internal stresses;
- at the bottom of the pool, put the armature on special chairs (you can use stones of equal height or metal blanks, etc.), armature on the walls, fasten with special plastic locks or asterisks;
- if piping is assumed, lay it during reinforcement, in places you can not get to after the concreting.
Knitting armature can be made by special crochet.
Formwork of the future concrete pool bowl
Formwork of the future bowl is a very important moment.
Much depends on the quality of the installation and the reliability of fastening the formwork of the concrete bowl.
If the formwork is performed poorly, because of the heavy weight of the concrete, as a result of its pressure, buckling may occur, which will lead to the collapse of the walls and, as a result, the geometry of the pool will be violated.
To form it was strong, it is best to use a reusable metal formwork.
But because of the unique shape of each pool, it is very difficult to select such a metal formwork.
Therefore, in general, one-time formwork is used.
Professionals are advised to use as a formwork plywood thickness of at least 2 cm.
All the embedded elements, do not mount before pouring concrete, leave the niches in which, after removing the formwork and leveling the walls, install the necessary equipment for maintenance of the pool.
When installing the formwork, every half meter, install spacers and couplers.
If the pool is made close to the wall of the house, the wall of the house can serve as an external formwork.
Between the wall of the house and concrete, it is necessary to lay a separator in the form of a foam plastic with a thickness of at least 5 cm.
Conditions for proper concreting
For a concrete bowl to last long and be strong, use concrete grade not lower than M350.
Concreting works are carried out at an outside temperature of at least + 5 * C.
Pouring concrete should be continuous, in extreme cases in two stages, but it is necessary to apply the technology of waterproofing the "cold seam". Seal the concrete mix with a vibrator.
At the end of the concrete works, it is necessary to level the bottom and walls, establish all mortgage alimony, zachekanit niches, then we conduct waterproofing and facing works.
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