Beautiful house ceilings, comfortable and convenient platforms are becoming more and more owners' decoration options. Behind the ceiling and platform there is an important "backing", that is, the keel, which mainly plays a supporting role. There are many kinds of keel, according to the different materials can be divided into wood keel, light steel keel, aluminum alloy keel and steel keel, of which light steel keel and wood keel are the most common. Come here today and everyone to talk about this wood keel, familiar with the construction process of the under-keel ceiling.

Lines include: elevation lines, roof molding location lines, hanging point layout lines, large and medium-sized lamp bit lines.

(1) Determine the elevation line

According to the +50cm horizontal line on the interior wall, measure the height from the ruler to the ceiling, draw a height line at that point, fill the water level with a plastic transparent hose, and align the horizontal plane of one end of the hose with the height of the wall. . Then at the other end of the hose, find another point on the same side wall. When the water level in the hose is still, draw the horizontal position of the point, and then connect the two points, that is, the ceiling height level. Use the same method to make high level lines on other walls. During operation, it should be noted that only one reference height point for a room is used, and each wall's height line measurement point is common. A line of ink is played around the wall. This line is the horizontal line around the ceiling. The deviation cannot exceed 5mm.

(2) Determine the molding position line

For a more regular building space, the ceiling shape of the ceiling can be measured on a vertical surface of the wall to draw the horizontal lines of other walls, that is, the outer frame line of the ceiling position, and gradually find out the local styling frame. line. For the irregular space painting ceiling style line, a point-finding method should be adopted. That is, the distance from the edge of the model to the wall surface should be measured according to the construction drawings. The actual measurement from the wall surface and the ceiling base should be performed to find out the relevant basic points of the ceiling shape frame. Connect the points to form a ceiling molding line.

(3) Determine the hanging point position

For flat ceilings, the hanging points are usually arranged one per m2 and evenly arranged on the ceiling. For suspended ceilings with stacked shapes, attention should be paid to the arrangement of hanging points at the layered junctions. The distance between the hanging points should be 0.8 to 1.2 m. Larger lighting fixtures should be arranged with separate hanging points for hanging.

2, wood keel processing

The wooden keel used for the ceiling was screened, and parts such as corrosion, oblique cracking, and moth-eaten were removed. The wood keel used in the project must be fireproofed. Generally, the fireproof paint is painted or sprayed on the surface of the wood, and the wood can also be impregnated in the fireproof paint tank.

For wooden keels that are in direct contact with the structure, such as wall keels, girder keels, keels that protrude into or contact with the wall should be pre-brushed with preservatives. The preservatives that are required to be painted have the effect of moisture-proof, anti-mite and anti-corrosion.

3, installation of boom

(1) Setting method of suspender fixing

1 Fix the ∠25×3 or ∠30×3 angle iron on the floor of the cast-in-place floor with M8 or M10 expansion bolts. For M8 expansion bolts drilling depth ≥ 50mm, drilling diameter 10.5mm is appropriate; for M10 expansion bolt drilling depth ≥ 60mm, drilling diameter 13mm is appropriate.

2 Use φ5 or more high-strength nails to fix ∠40×4 angle steel or steel plate on the floor of the cast-in-place floor.

3 When watering the floor or the roof slab, iron pieces are embedded in the bottom of the arrangement of the booms, and iron pieces are made of δ=6mm thick steel plates, and the anchor claws are 4φ8L≥150mm.

4 Pre-embedded floor slabs are pre-embedded or the pre-fabricated slab is pre-embedded with φ10 steel bars. (For non-human roofing, the optional φ6 or φ8 for the sill) requires the pre-embedded location to be accurate. If it is cast-in-situ slab, the exact position should be marked on the stencil surface and then drilled on the stencil. Ribs. For the steel formwork, the suspender connecting ribs can also be pre-bent 90° and then be placed on the surface of the template, which will be removed after the mold is removed.

The above two methods for fixing the boom connector are not suitable for the upper roof.

Ceiling mounting keel installation

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