floor joist structure and fastening with platform

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Timber flooring is one of the basic systems of building and house construction. by the Korat home builders รับสร้างบ้านโคราช Or get a general home builder know that. with wooden structure The wood that has been processed is very convenient and quick to work. As well as the tools used in the construction are of the most common types and the floor system can also help transfer lateral forces into the load-bearing walls as well. If designed like time of earthquake

  • Since wooden structures are flammable, we should choose non-combustible topcoat materials.
  • The disadvantages of wooden structures are Corrosion and was eaten by insects. The building in Ratchaburi รับสร้างบ้านราชบุรี and other must have a good drainage system so that the wood does not come into direct contact with the soil. as well as ventilation to prevent stuffiness
  • Distance between joists 12″, 16″ or 24″ (305, 405 or 610), depending on load and floor strength.
  • The internal condition between the tongs will be vacant. making it possible to walk water and electricity pipes as well as thermal insulation
  • The ceiling is fixed under the wooden joists. Or it can be hung lower to install more pipes and wires.
  • It is necessary to anchor horizontally at the end of the joist.
  • Wooden headboard to help fix the sides.
  • A pair of thongs for the end thongs to receive the wall.
  • The slab will help hold the wooden yandong from turning over.
  • Floor decoration with flooring materials can be done in another layer on the slab.

18. joist structure and fastening

  • The joists may be supported by wooden beams, steel beams or load-bearing walls.
  • Minimum 1½” (38) laying distance for wooden or steel support beams.
  • Minimum 3″ (75) laying distance on supporting wall for load-bearing walls.

The length of the tong’s span depends on the following factors:

  • Load size
  • The size of the joists and the distance between the joists.
  • The type of wood or its mechanical properties.
  • The deflection value of the floor joist is allowed to be limited. so that the surface is always smooth or depending on the purpose of use

The cross section of Tongmai

cross-section, cross-section length

  • 2 × 6 to 10′ (3050)
  • 2 × 8 8′ to 12′ (2,440 to 3,660)
  • 2 × 10 10′ to 14′ (3,050 to 4,265)
  • 2 × 12 12′ to 18′ (3,660 to 5,485)
  • Estimating the depth of the joists. equal to the length of the span divided by 16 (2″ thick wood)
  • The deflection distance should not exceed 1/360 of the span length.
  • Damage is usually caused by turning or twisting the cross-section first.
  • If the height between the floor and the floor is high enough Choosing a joist with a greater depth and a greater distance between the joists It is better than using small joists and must be arranged frequently.
  • Should consult the manufacturer about the characteristics of the wood floor that should be used for strength.

securing the wooden yandong We can use wooden or steel diagonal anchors. Or take the full face of the club every 8′ (2,440) distance by attaching to the side of the joist When the dong has a depth greater than six times the thickness of the dong In the event that both ends of the joist are fixed on the sides and the top edge is held in place by the ground There may not be any need for side mounts.

  • At least 2″ (51) away from the edge.
  • The borehole diameter does not exceed 1⁄3 of the joist depth.
  • The notch shall not exceed 1⁄6 of the joist depth and must be at least 1⁄3 of the support distance from the support point.Click here crunchnews.net.

Drilling or notching is done only when necessary. such as wanting to run pipes/wires through with recommendations as shown in the figure above. (because drilling or notching will cause the wood joists to lose strength)

Platform structure

  • Wooden wall frame.
  • wooden floor
  • Wooden Tongs
  • A special fixing device is used to attach the wall-floor to the base. This makes it able to withstand the uplift caused by wind or lateral forces caused by earthquakes.
  • joist
  • Fastened with 16d nails.
  • 8d nails diagonally driven at every distance 16″ (405)
  • At least 1½” (38) shoulder distance.
  • Fastened with 3 8d nails.
  • 2″ × 6″ or 2″ × 8″ spacers
  • The support will transfer the weight from the wall to the base. It is placed over a flexible sheet of material. to prevent air permeation
  • ∅ ½” (13) threaded anchor, 6′ (1,830) spacing, or at least 2 head and tail fasteners. They are no more than 12″ (305) away from the edge and require more fixation. When protection against the forces caused by earthquakes is required
  • to strengthen May be added as a double backing board fixed with 10d nails every 24″ (610) distance, provided that they are overlapped at the corners of the building.
  • The edge of the joist is placed on the leveling support.
  • Thin steel sheet to prevent termites and insects.
  • Secure the supports together at the corners with 10d nails.
  • Allow some distance for installing the wall protection panels. so that the face of the wall is equal to the face of the baseClick here to know more about webmagazine420