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Cracks problem

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The joint cracks belong to the home builder company   รับสร้างบ้านราชบุรี  Often encounter this kind of problem on a regular basis, the crack problem is as follows :

expansion joint

Expansion joints are used to allow the concrete floor to expand when the temperature rises. This type of joint may be between the slab joints themselves. or walls and columns

construction joint

Construction joints are used as a point for the end of the concrete pouring work. or pause before pouring again later If wanting to apply this type of joint as an expansion joint or a broken joint We may make a joint in the form of a tongue. Or use a steel dowel plug to prevent vertical movement.

  • Bending radius 1/8″ (3)
  • Fill the expansion joint with a sealant with stretch and shrink properties.
  • Steel dowels are coated with anti-unequal anti-collapse grease.

seam to break

Fracture joints are joints prepared for site cracks that will occur due to tensile forces in the floor. The splice spacing ranges from 15′ to 20′ (4,570 to 6,100) or as a line between a non-perpendicular area and a perpendicular area.

  • Sealing a saw-cut joint with a sealant.
  • Joints embedded with steel rods 1/8″ wide (3) before concreting.
  • Engraved joints
  • Use a metal or plastic form, or apply a solution on one side before pouring the concrete on the other. to prevent the two side surfaces from merging together

Building a house    รับสร้างบ้านโคราช   with brick walls or as a wall type embedded with dowels There are differences as follows:

brick wall

A single spread foundation transfers forces from the building into the soil beneath the foundation.

  • Independent foundations are used in cases where the load-bearing walls require a lot of weight or have the weight to act as a point. The foundation should be made separately from the floor to support the weight of the wall.
  • External walls and foundations.
  • Concrete floor placed on the ground.
  • Foam-filled insulation sheets.

dowel-in wall

  • margins to be waterproof. and prevent the wood from touching the soil at least 6″ (150). It may be installed outside or inside of the foundation wall.
  • In-place concrete foundation walls
  • at least 12″ (305) depth
  • The width and depth of the base depend on the weight. and the ability to withstand soil loads

ground joint base

  • In areas with warm climates and soil surfaces according to the terrain are stable, strong against high pressure, increasing the thickness of the like area to act as a foundation and prevent the sand layer from flowing in. It will greatly save the cost of construction.
  • At least 6″ (150) margin to be water-repellent and not to direct contact with soil.
  • The thickness of the base edge is at least 12″ (305).
  • Placed below the frost line.
  • Concrete floors may be thicker in areas that need support for columns or internal walls. to act as a foundation for further transfer of weight into the soil

laying heating pipes

  • At least 2½” (64) cladding distance.
  • insulated
  • Insulated heating pipes to prevent heat loss.

embedding heating pipes

  • Covering 1½” to 3″ (40 to 75)
  • At the joint of the construction The pipe running through the joint should be copper pipe. which may be able to move
  • It is recommended to put insulation under the concrete floor.

Drilling holes in concrete for piping

  • Foam insulation fills holes around the pipes. To prevent temperature loss caused by contact between the pipe surface and the concrete floor.

Concrete slab pouring in the form of a ladder

  • Remove squares or make them rounded.
  • 1½” (38) nose angle reinforcement cover
  • The thickness of the bottom of the stairs is at least 4″ (100).
  • Expansion joints or construction joints
  • Use dowel rods that come with paint or asphalt. Or make a bolted joint to prevent uneven subsidence.

open penetration in the ground

  • For openings larger than 12″ (305) or more, an additional layer of steel should be added 2′ 0″ (610) from each edge of the opening on all sides.
  1. Column on the foundation

The towering pole is high on a spreading foundation. It will help to elevate the wooden building from the ground and do not have to dig a lot of soil. and also helps to maintain the original natural condition The use of columnar foundations is very useful for buildings on steep slopes or in seasonal flooding areas.

These wooden posts are positioned along the beams or joists. The distance between each pillar is the length of the span of the beam itself. This will depend on the amount of weight that the pole will have to bear. The dimensions of the beams and columns themselves.

  • 6″ to 12″ (150 to 305) diameter wooden posts, treated with a treatment. Not used should be hardwood that is resistant to corrosion. This wooden post is built as a load-bearing frame with the tip of the column protruding into the soil.
  • Timber is fixed between the head of the column and acts as a girder along the line with the overhang should not exceed 14 of the span length (before filing).
  • External surfaces, walls and roofs should be insulated. To prevent adverse weather conditions in each area from the outside into the building.
  • The spacing between the posts is approximately 6′ to 12′ (1,830 to 3,660) to accommodate floors and roofs with less usable area up to 144 ft² (13.4 m²). punching machine

Stability and ability to withstand seismic and lateral wind loads are important to a building, so the pit should be deep enough. There are tight holes. and good bonding conditions. However, the depth of the well depends on the following factors:

  • The slope of the construction site.
  • The condition of the soil to be excavated.
  • distance between poles
  • The height of the column only above the ground.
  • Earthquake risk conditions.
  • Should use a diaphragm (diaphragm) in the design or construction of the floor. To be able to transfer the stability of the pole at the top of the hill to the pole at the bottom of the hill

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