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Bearing Structures

August 12, 2017 18:08

Foundations columnar- belt as a solution for difficult areas

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In what cases do such a foundation?

This type is appropriate in areas with deep soil freezing, when the strip foundation with a large recessed becomes too expensive and melkozaglublenny not suitable for various reasons.In this case, the device columnar-strip foundation becomes the best option.Also, it should be installed in areas with slopes.This type of foundation load is transmitted through the pillars, which are installed at 200 mm below the freezing level.This depth has plenty of compacted soil, and it does not swells with frost, which does not allow the foundation to climb.

main works at the foundation of such a device associated with drilling wells under the poles.Manual operation will take about two hours for each column, so it is advisable to use a drill TISE .This makes the drill hole bottom of the hole with an extension that allows more securely fix the pole.In particular, the extension does not push the pole from the ground.

Note!The depth of the borehole should be determined by qualitative indicators of soil and the depth of its freezing.

lays the foundation columnar-belt

Before the construction area is cleared of debris, grass and interfering objects.Next is the site layout for the foundation.To check for compliance at the angles of 90 degrees, measured diagonally.If there are irregularities, they should be corrected with a rope pegs permutation.After marking the perimeter dug a trench depth of 40 cm and a width of 30-40 centimeters.This trench will further allow the foundation to do on weight, or else with expanded clay or sand cushion.

Next on the perimeter, starting from the corners, make a hole to a depth of soil freezing, it is about 160-180 centimeters.Hole diameter - 20-30 cm, and the interval between them should be two meters.The wells are inserted ruberoidnyj pipe to protect from moisture poles and pillars for the workpiece.The blanks are made of welded fittings.

Once everything is ready, the workpiece need to relate to each other fittings.The result is a zone of reinforcement.Next is creation around the perimeter of the formwork.Mounts is made of boards, plywood or fiberboard.To her it was easy to remove, the formwork must be lubricated with engine oil.Make it should be the maximum quality, because this will depend on the reliability of the entire foundation.The final stage - is pouring concrete formwork.This can be used as a ready-mix, and make it their own.Begin construction on the foundation can be 3-6 months.

Important nuances

columnar-strip foundations with their own hands is made of different material:

  • to stone pillars ideal quarry stone;
  • greatest durability provides a heavy-duty reinforced concrete foundation;
  • order as quickly as possible to make the foundation, you can use ready-made concrete blocks or a concrete;
  • for concrete pillars used concrete grade B15-B25;
  • also possible to use tubes that are filled with a mixture of concrete.

In order to properly select the depth of laying the foundation, it is necessary to know the type of soil at the site of construction.So, if the site has a swampy ground, it must be part of, and preferably entirely, to be replaced.The best base is sand, as he has a high load carrying capacity and water pass.In addition, should take into account groundwater.If they are placed high enough, you'll have to do the drainage and waterproofing.

Important!Without taking into account the nature of the soil quality and reliable foundation to build will not work.

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