How to pour a strip foundation directly into the ground. real experience

You can pour the foundation in the ground or not, whether the need for shuttering or strip foundation can do without it – answers you will learn from our material

Shed or not shed, that is the question! This is how one can paraphrase a famous saying, when forumchanin taken to fill the belt foundation without the use of removable formwork.

Content

· Fill strip foundation in the ground

· Algorithm concrete without formwork

· Fill strip foundation in the ground: step by step guide

Fill strip foundation in the ground

In the heated debate about whether it is possible to pour a strip foundation in the ground or he needs planking, broken a lot of copies. But better to see once than hear a hundred times. Our Validating the nickname Radomir999 After much deliberation and reading recommendations FORUMHOUSE members decided to build his private home of warm ceramics fill strip foundation of the building straight into the ground. And, as subsequent events showed, he never regretted it!

Radomir999

Member FORUMHOUSE

After studying the information on the forum, I originally chose this method of construction of this type of foundation. Strip foundation will pour for 1 time, M250 brand of concrete factory, in a wooden formwork. Next will execute waterproofing strip foundation in the ground (bituminous coating fusing Stekloizol +).

According to members of the forum, well-posed and then shot technologyformworkIt will always be a "business" board. And in the future it will be possible to put on the rough floor or roof crate.

But the father of our forumchanin did not want to spend the money (about 50-60 tons. Rub.) In the shuttering of boards 40-50 mm thick.

Radomir999

We were like, along with his father to the neighbors in the settlement, porassprashivat about the types of foundations. It turned out that all poured concrete without any formwork! Polls practiced casting tape foundationin the trenchand  houses are already 5-10 years.

Validating decided to do in the land of permanent formwork of Epps. And on top, above the ground, low planned formwork device for the cap of the planks.

However, at this stage of any complexity.

Radomir999

I began to search for topics about how the casting belt foundation on the ground, but I did not find anything sensible. All strongly advised to build high-quality wooden formwork. Also offered as an option, casting concrete layers (2-3 fold) when the previous layer hardens, disassemble formwork planks lift upward to the next layer and so on until the top of the foundation. However, this option does not suit me too. T. k. to pour concrete under the belt foundationat a time - is the best solution of all.

At the forum already has one theme dedicated to issues of casting concrete directly into the ground. She helped our forumchanin a detailed plan for the construction of strip foundation. After careful planning - it is half the success of the business.

Radomir999

Topikstarter this topic came up with a good alternative. It was here that I saw the first drawings and options molding strip foundation in the ground in 2 versions: with roofing felt and foam.

But, according to our user roofing material in the ground at the base of the foundation tape still was not equal to the ideal option, ie. A. Wall strip foundation would not get even. So he leaned in favor of the extruded polystyrene, despite the fact that it is 2.5-3 times more expensive than conventional foam.

Radomir999

Comparing prices Epps with formwork 1.9 m high prices of boards 50 mm thick, my father found out that Epps will cost us less.

Also, when using Epps strip foundation walls will be smooth and will not cling to the ground in the spring with the swelling. And the foundation is immediately insulated.

Carefully consider all the details relating to the construction of strip foundation, Radomir999 made for themselves a construction plan:

Pouring concrete without formwork

1. Trench digging by hand.

The walls of the ditch will have a maximum smoothness and are smooth for easy installation sheets Epps in the ground.

2. At the bottom of the trench to lay the sand 20 cm. The sand is pre-wetted, then ramming. So we align the bottom of the pit.

3. In the trench to lay a polyethylene film 200 microns thick. The joints of the film to stick together with tape. This will keep the scum layer for greater durability of concrete.

4. On top of polyethylene, on the bottom of the trench vykladyvt roofing felt, too, at the junctions of overlapping.

5. Then, vertically insert sheets Epps 50 mm thick hammer them into the ground with nails.

6. Produce the reinforcement tape foundation.

7. Set of formwork boards 15 cm wide, 25 mm thick, above the ground -for part of the foundation plinth.

8. Sheets Epps insert horizontally within wooden formwork, screwing screws outside.

Sheet sizes Epps -120h60h5 see. Therefore, the first row in the ground easily put vertically, and the second and upper - horizontally.

From our articleyou learn how to self warmed to build the foundation.

Radomir999

For clarity - the perimeter dimensions of my continuous footing following: 11,6h11,6 m is the average load bearing wall. Height: 180 cm (130 in the ground above the ground 50 - cap) belt width of 50 cm. GWL = 5.5 m distending Primer (40 cm of the top layer - black earth, more loam, very plastic clay).. The depth of soil freezing - 1.6 m. Ground water is not disturbed, there is perched on spring.

Fill strip foundation in the ground:Stepping instruction 

1. Marking the foundation tape

Radomir999

To mark the trench walls you will need: strong thread, measuring tape, a length greater than the diagonal of the perimeter of the house, the plummet; long screws with large prominent bonnet.

Next, the space on the site where you want to dig a trench. At the corners, install 2 boards. They clog small nails, which tied the rope. Sticks driven into the ground with the removal of the corners, so that they do not interfere with you in the future to dig.

For precision measurements count, which is equal to the diagonal of your perimeter by the Pythagorean theorem. Then plumb mark a few points on the earth the desired line. A self-tapping screws to slide under the stretched rope with the removal of the corner, close to the board.

2. Digging trenches

Radomir999

Father himself had dug two walls for two weeks under the strip footing the buildings. Trench walls have turned out good. The difference is especially noticeable in comparison with the walls, where a tractor was digging.

As well as in the construction of the basement, the tractor has a bit to get to the bottom of the trench, so as not to disturb the mother earth. And the depth of laying the construction can be monitored by the board, which previously have to make a mark on the depth of your trench and lowering it, check the depth of digging.

The trench wider than the thickness necessary to do the foundation Epps + 5 cm.

Radomir999

After a tractor dig trenches, I suggest using gidrourovnya, starting from the lowest corner of the perimeter, define "zero" on all other corners. At these points, you tighten the screw and pull the rope. This will help you align the bottom of the trench.

Sand for laying on the bottom of the trench Radomir999 advises moisturize the street and put it on the bottom of the trench is already soaked. This is in order to prevent moisture and appear thinner at the bottom of the trench.

You can then ramming his vibratory plates.

Radomir999

We did not have compactors, ramming his father beforehand sawn oak chock. We sand cushion of 20 cm. By and large, the pillow is bad, and if you have the perfect level of the bottom and corners, the professionals advise to do without it.

3. Lining the trench polyethylene

Sufficient thickness of the polyethylene for this purpose -150 microns but Radomir999 Stela.: 200 md

Radomir999

If possible, it is better to take a roll width of a little more, so as not to glue the joints with tape. If you are going to glue adhesive tape, be sure to glue the two sides! We glued the one, internal, and it was our mistake.

In the heat under the polythene condensate flows. If the joints are assembled so that the condensate falls into the pocket, then in these places tape will peel off and condensate flow with mud. Also polyethylene maintains humidity in the trench and in the hot sultry trench walls do not dry summer days. If they dry out, they begin to crumble, crumble, are large cracks and the wall may collapse.

4. Lining roofing material on the bottom as the trough.

It is important to remember that you should not leave the rolls in the heat, t. To. Slipnetsya bitumen, it will affect the quality and the roll is difficult to uncover.

5.Set sheets Epps.

Sheets set vertically on level stykuya the recess in the groove. Then nailed with nails to their land length of 20 to 30 cm (depending on the roughness of the walls of the trench).

Radomir999

Nail 20 cm we used the washer. On one sheet took to 6 nails. At the corners, the corners can be mounted (homemade) with bolts and nuts.

After installing the bottom row can be used Epps backfill sand. Radomir999 advised not to skimp on the sand.

This is wrong by building codes, and when water rains and gets over Epps sheets, the clay swells and squeeze sheets.

Force majeure circumstances

Despite an elaborate plan, nature has made its own adjustments. Instead of the promised Indian summer, from Moscow to Cheboksary, where our hero lives were prolonged heavy rainfall. This could lead to the collapse of the trench walls. A carefully aligned at the bottom forumchanin eyes gradually turned into a sticky goo that can not pour the foundation. It was necessary to do something urgently to come up with any way to save the fruits of their labors!

Radomir999

It rained, and the water sometimes fell into the trench, in addition, began kukozhitsya roofing material. On polyethylene, which we have decided to hide the trench began to gather a pool of water into which the worms. Birds sit their pecking and tearing beak polyethylene. Torn place we stuck together with tape, but the water in some places seeped through the tape. So we decided on a bottom of the trench fill concrete pad thickness of 10 cm.

6. foundation reinforcement

When reinforcing is necessary to remember the highlights of SNIP:

1) The protective layer of concrete should be not less than 5 cm.

This means that the valve must not rest against the walls of the trench. On the sides of the trench and the top reinforcement should deviate from the tape base edge 5 cm. Below - 7 cm. In the absence of concrete pad and not less than 3.5 cm, if any.

2) If the height MZLF (melokzaglublennogo foundation) of more than 70 cm to be installed in not only the lower and the top row of the longitudinal reinforcement, but average ranks that do not carry the load, but are constructive.

Average ranks of longitudinal reinforcement is sufficient to make reinforcement of d = 12 mm. If the wall is more than 3 m in length, then only the side faces of the tape base. T. e. for medium-sized series of longitudinal rods 2 is sufficient from the 12th fixture.

3) For anchoring fixtures in the next adjacent wall, it is necessary to bend the ends or the use of additional L-shaped corners to enhance anchoring.

7. Formwork for base

Radomir999

Offline advised to raise the formwork boards of a thickness of 40-50 mm. Experts recommend these boards for everyone: for those who doformworkthe entire height of the strip foundation is 1.5-2 meters, and for those who, like me, spends «formwork"tOnly for the cap, t. e. for the above-ground part of the foundation. We took the 25-ku and did not regret it. The main thing to put in the structure often holding up the triangle and cross. We are standing at 1 meter. The height of the formwork desirably 5 cm (at least) above the edge of the foundation so that the concrete does not splatter.

8. Set top row Epps inside formwork

9. Installing the cartridges in the trench for future sewer and water pipes

Radomir999

We purchased a red plastic pipe diameter of 200 mm a length of 1 meter. From her made 2 cartridge, which will host the sewer.

It is necessary to think in advanceall the features of wastewaterHow and where will be held sewerage, under any bias will go tubing which adapters will be installed.

And there are some secrets:

• Liners should be wider than the sewer pipe 2 times;
• Pipes from kitchens, showers, bath d = 50 mm is placed with a slope of not more than 3 cm to 1 meter of pipe;
• Pipe from the toilet bowl and to the outlet pipe septic d = 110 mm is placed with a slope of not more than 2 cm to 1 meter of pipe;
• All transitions from horizontal to vertical, or do the corners 2h45⁰ 3h30⁰;
• Sewer pipe should go to a septic tank in a straight line.

10. Pouring concrete

Radomir999

We poured concrete solution brand M250, 48 cubes. By this time the rain washed away the ground around the trench that, even working in galoshes and boots, we are stuck in the mire. About laden concrete mixers, which will drive our trench, can be forgotten, we had to go the hard way and order the concrete pump.

When casting concrete via a concrete pump Radomir999 He advises:

1. In advance, in writing, to negotiate with the supplier of concrete for continuous delivery of concrete;

This will help to recover the penalty from the concrete supplier company if mixers late.

2. It wanted to buy for all the builders, which will be located next to the supply pipe of concrete pump: safety glasses, cheap disposable surgical bandages, rubber gloves;

Radomir999

The jet of concrete is so strong that the spray of concrete flying into the eyes, mouth, hands, dried, aching fingernails.

3. Put his back to the concrete pump pulls mixers - it will speed up the work.

Radomir999

T. a. started cold, we decided to play it safe and ordered antimoroznuyu additive to concrete. As taught in the forum, I ordered 49 cubic meters, ie. E. a counted amount of 1 m +³ in reserve in case of force majeure. As a result, we filled exactly 48 cubes, and after pouring from the remnants of concreting done a small area in front of the house. Here's your playground ready for the entrance of the car!

Chitatyte our article on how to approach the issue foundation waterproofing, and waterproofing the roof.

FORUMHOUSE users can learn all the details and features the construction of strip foundations, Read the detailed and clear account of our forumchanin about how he He poured its foundation in earth. And in our video reel, gives details on how to build ground floor at high groundwater.

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