"Thin-layer repair" refers to repairing a layer of mixture with a thickness less than 5cm in the low-lying area during the forming process of subbase. If the lower surface is smooth and hard, the patch layer and the bottom layer cannot be firmly combined. During the rolling process, under the action of the roller, the "thin patch" is easy to fall off, roll and be pushed, which seriously affects the appearance quality of the subbase. In the process of forming subbase, the mixture with thickness less than 5cm. If the lower surface is smooth and hard, the patch layer and the bottom layer cannot be firmly combined. In the process of rolling, it is easy to fall off, roll and be pushed under the action of roller, which seriously affects the appearance quality of subbase.

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1. What does the plan construction drawing mean?

Flat plate method is the abbreviation of "overall design method of building structure plane", and it has been widely used in the field of national structural engineering. Flat method is a kind of drawing method to express structural size, elevation, structure and reinforcement. Use the plane, this is the structural construction drawing for the building.

Second, what is the construction node:

Structural joint refers to the detailed description of key parts of the building, such as eaves gutter and roof, parapet drainage, flooding of low roof and wall, expansion joints, etc. The purpose of building joint is to ensure that the "building joint" can transmit and bear the load given by the building structure at this position, even if the stress of the building can meet the design and use requirements.

Third, what is a building node:

A building node diagram, sometimes called a "detail" diagram, is a diagram showing the details of a building structure. The so-called node diagram of building curtain wall is a diagram with details of curtain wall, such as what components the curtain wall plates are connected to, how to connect them, the material and size of each component, and even some are as fine as each bolt. Node diagram is commonly used, especially for guiding construction methods.

Fourth, how to read the introduction:

The outline of 1. has three elements, namely position line, direction line and number, as shown in the figure below, which are outline symbols marked on the plan.

2. The direction of the sectional view is as shown below, and it is cut along the green position line. Assuming that B does not exist, the projection towards the arrow is a sectional view.

3. When we look at the profile, we should look at it in combination with the legend. The drawing rule of profile is that the solid part is represented by legend, the cutting part is represented by thick line and the non-cutting part is represented by solid line.

4. Although the above example is only a simple entity, generally speaking, the method is the same for relatively complex engineering drawings. As long as the cutting position and direction are clear, the similarities and differences between sections can be found.

5. The contour is similar to the contour, which is widely used in engineering drawing. The outline symbol has no direction line, and the section number faces the direction of the position line.

6. They all need to be cut to reflect the internal structure, and both the cut and uncut parts of the outline should be described. The outline only describes the cut part, and the outline cut at the same position contains the outline.