What does measured structural plate thickness mean? 10

...Hehe.. Is your home from Jiangsu?

To explain, in order to control the quality of new residential buildings, the state has implemented a household acceptance system. This situation in your home is within the scope of acceptance.

1. The thickness of the structural plate is the thickness of the plate that is purely used for the load-bearing of the structure. (The actual floor slab thickness in your house is generally thicker than the structural floor slab, because of the additional roof plastering and floor pouring).

2. Whether the board is a cast-in-place board is hard to say... Because the requirements are different in various places, such as Jiangsu, 7-degree earthquake-resistant areas must use cast-in-place slabs, and your home. Hehe..

However, most of the buildings with measured slab thickness are cast-in-situ slabs; The thickness of the prefabricated board is relatively stable, and there is generally no need to retest; (Cast-in-place slabs are floor slabs that are poured on site with concrete, prefabricated slabs are pre-made concrete slabs and then transported to the construction site for installation, and structural slabs include cast-in-place slabs and prefabricated slabs).

3. The measured 97mm of the structural plate belongs to the qualified range (you can ask the construction party to see the "Structural Concrete Plate Thickness Measurement Report of the Building", which is provided by the local testing agency and has specific inspection conclusions).

4. The wall map is a survey diagram, not a construction drawing; Because the construction drawings are more complex, non-professionals generally cannot understand them.

5. The problem of whether the house with a structural plate thickness of 100mm is up to standard is very helpless, you can only go to the construction party to ask the construction party to see the official construction drawings (the first page of the structural construction "Structural Construction Instructions" generally has the plate thickness, concrete number or something), generally if it is consistent with the design, it is qualified. (Personally, the board thickness of an ordinary household house is 100-130mm, of which the kitchen and bathroom are 90-120mm).

1 is the actual thickness measured by drilling holes in the floor with a drilling rig.

2 is cast-in-place, and the structural plate is the floor slab "cast-in-place slab or slab".

3. If the standard is reached, the design is 100mm thick, and the core is 95mm thick, even if it is qualified, this drawing is not a construction drawing.

There is no heavy load on the plate, generally both sides are within 4 meters of the plate, 100 thickness is relatively suitable, the above appropriate thickening.

1. When the ratio of the length of the long side to the short side is less than or equal to, it should be calculated as a two-way plate;

2. When the ratio of the length of the long side to the short side is greater than but less than, it should be calculated according to the two-way plate; When calculated according to the one-way plate stressed along the short side direction, a sufficient number of structural reinforcement should be arranged along the long side direction;

3. When the ratio of the length of the long side to the short side is greater than or equal to, it can be calculated according to the one-way plate that is stressed along the direction of the short side.

Reinforced concrete cast-in-situ floor slabs:

When load-bearing walls. When the spacing is not large, such as the kitchen and toilet room of the residence, the reinforced concrete floor slab can be directly placed on the wall, without beams and columns, the span of the slab is generally 2-3 meters, and the thickness of the slab is about 70-80mm.

Reinforced concrete ribbed floor slab: also known as beam slab floor, it is the most common form of cast-in-place floor slab.

It consists of the main board. The secondary beam and the main beam are composed. The main beam can be supported by columns and walls. All slabs, ribs, main beams and columns are cast in situ after the tributary is guessed. Its general span is 60-80 mm thick.

The above content reference: coarse royal type hundred dismantling round family - prefabricated board.

Summary. The floor thickness is not visible in the floor plan. On the elevation of the building drawing, you can see the floor height, that is, the floor height, the floor thickness is generally reflected by the building structure drawing, usually in the structural drawing of the girder through the node drawing to draw the details of the floor slab, that is, the plate thickness and the reinforcement diagram of the plate will be drawn, it is worth mentioning that:

The thickness of the floor slab is not necessarily the same for the same floor and different locations.

The building is flat, and the floor thickness cannot be seen in the drawing. On the elevation of the building drawing, you can see the floor height that is, the floor height, the floor thickness is generally reflected by the building structure drawing, usually in the structural drawings of the girder through the node drawing to draw the details of the floor slab, Lu Jian will draw the plate thickness and the reinforcement diagram of the plate, it is worth mentioning that: the same floor, the age of different positions, the floor thickness is not necessarily the same.

The whole set of drawings includes the building of the shed foundation, structure, water and electricity, HVAC and other ridge specialty, the building drawing is not seen in the thickness of the plate trembling, to see the structural layout drawing, generally in the drawing there is a description, "the figure does not indicate the thickness of the plate is not xx mm".

Summary. Hello, glad you asked, the floor thickness is not visible in the floor plan. On the elevation of the building drawing, you can see the floor height, that is, the floor height, the floor thickness is generally reflected by the building structure drawing, usually in the structural drawing of the girder through the node drawing to draw the details of the floor slab, that is, the plate thickness and the reinforcement diagram of the plate will be drawn, it is worth mentioning that:

The thickness of the floor slab is not necessarily the same for the same floor and different locations. The whole set of drawings includes architecture, structure, water and electricity, HVAC and other majors, the plate thickness can not be seen in the architectural drawing, to see the structural layout drawing, there is generally a description in the drawing, "the plate thickness is not indicated in the drawing, not xx mm".

Hello, glad you asked, the floor thickness is not visible in the floor plan. On the elevation of the building drawing, you can see that the floor height is the height of the floor, and the thickness of the floor is generally reflected by the building structure drawing.

The whole set of drawings includes architecture, structure, water and electricity, HVAC and other majors, the thickness of the plate can not be seen in the architectural drawing, to see the structural layout drawing, there is generally a description in the drawing, "the plate thickness is not indicated in the figure is not xx mm".

The thickness of the plate is 100, one, how thick this plate should be.

The thickness of the plate is 10 cm, and the weight is 5 cm, what is the thickness of this plate?

What about people. Hello, the general floor thickness is generally 120mm, without external insulation materials for the exterior wall of the civil building residential building is generally 200mm, the inner wall is 200mm or 100mm, the outer wall of the public building is 200mm, 250mm, 300mm, 350mm, 400mm, and the inner wall is 100mm 400mm.

1. The design determines the thickness of the slab: according to the span of the slab and the load condition of the primary span of about 1 30, it must meet the minimum thickness requirements of the floor slab of the building for various purposes in the GB50010-2010 "Code for Design of Concrete Structures". Then the bearing capacity is calculated and the reinforcement is arranged.

If necessary, the deflection and crack resistance should also be calculated.

2. Determine the thickness of the plate during construction: strictly follow the construction drawings or instructions.

3. Completion measurement: no need to drill for actual measurement, now all non-destructive testing instruments are used, which is simple and fast.

Floor role. 1. The floor slab in the floor mainly bears the vertical load in the horizontal direction.

2. The floor slab can divide the building into several floors in the height direction.

3. The floor slab is the support and contact rod of the horizontal direction of the wall and column, which maintains the stability of the wall column, and can bear the load from the horizontal direction (such as wind load and ** load), and transmits these loads to the wall and column, and then from the wall and column to the foundation.

4. Sometimes it also plays the role of heat preservation and heat insulation, that is, the enclosure function.

5. The floor slab can also play a role in sound insulation to keep the upper and lower floors from interfering with each other.

6. The floor slab can also play the functions of fire prevention, waterproof, moisture prevention and so on.

7. If there is a heavy object in the use of the floor slab, it should not be concentrated at one point and pressed on it to avoid causing the floor slab to break.

It is determined according to factors such as span, area, load, etc.

First, first of all, it is impossible to accurately judge whether the plate thickness is reasonable or not based on the parameters you currently provide, and any conclusion based on this is arbitrary. It is also related to factors such as the type of plate, the type of structure, the way of support, the length of the long and short sides, and so on.

Second, if it is a cast-in-place rib plate, if the rib spacing is 700mm, then the minimum structural thickness required by the specification is 40mm, if the thickness of the cushion is 50 70mm, the thickness of the floor slab of about 10cm is no problem; However, if it is a beamless floor slab or a floor slab on a conversion level, the minimum thickness of the structure must be greater than 150mm, and if the underlayment thickness is included, it should be 200mm. Therefore, we found that the corresponding floor thickness requirements for different situations are different, and the span is only meaningful for the definition of single and two-way slabs, which is only one of many criteria.

3. The same living room plane, the width is different, but the thickness standard should be the same. This is not due to structural considerations, but mainly to architectural considerations.

4. If you want to see the design drawings, you should find the developer who has signed a purchase contract with you.

See your supplemental instructions.

From the answer to the third article above, we can see that the minimum thickness of the cast-in-place floor slab is also related to the floor reinforcement, which is very understandable, the steel bars are many and dense, and there is no problem with the slab being thin, on the contrary, if the ribs of the floor slab are small and sparse, of course it should be thicker. But you can't smash open the reinforcement situation, you still have to look for the as-built drawings, and it is not good to say whether the current plate thickness is reasonable before you see the drawings. So, finding the drawings is where it all starts.

1. The cushion of the floor slab is a layer of cement mortar layer used for burying pipelines and leveling on the floor slab, and the meaning of the word "leveling layer" is not very accurate, because it only represents a function of the cushion;

2. For example, the following is a frame commercial and the upper part is a brick-concrete residence, because of the different forms of the upper and lower structures, it is necessary to convert the force of the usual structural components (such as joists, etc.) at the junction of the upper and lower different structures, and the thickness of the floor slab is higher because of the special force, which shall not be less than 150mm.

3. The beamless floor slab is usually the structural form of the floor slab in the brick-concrete structure or the floor, etc., and does not refer to the floor slab with or without beams.

The thickness of the floor slab is determined according to the purpose and span of the building.

According to the national mandatory standards and specifications, the thickness of the residential cast-in-place concrete floor slab should be 1 30 of the span (that is, the distance between the adjacent two beams) (for example, the distance between the adjacent two beams is 3 meters, the thickness must be 10 cm), but the thinnest can not be less than 6 cm (if the distance between the two beams at the bathroom and corridor is meters, the thickness is 4 cm according to 1 30, and the design cannot be designed according to 4 cm), and the allowable error can be 8 mm thick or 5 mm thin. Some unscrupulous developers or construction units think that the thickness of the floor slab is not easy to measure anyway, and in fact, almost no one measures it, so in order to make huge profits, cut corners, and only make the floor slab 6 8 cm thick. Under normal circumstances, the detection of cast-in-place slab thickness is carried out with reference to the concrete cross-sectional size deviation in GB50204-2002, and the test conclusion is difficult to give whether it is qualified or not.

Generally, the average value is given for design reference and calculation.