question 2: what does this picture mean about the reinforcement of the lower pier? Don't you have a plan? This kind of marking may be the height of 4\12\16
B4 C25-12. If there is no plan, I personally think that 4\12\16 is the height < P > Question 3: The pier under the foundation raft is counted as H. This depends on the context. Generally speaking, the bottom elevation is the top elevation of raft foundation, not the bottom elevation, but it still needs to be related to the context. This drawing of yours is the detailed drawing of the lower pier. Instead of digging a foundation pit separately under the raft, it is integrated, but the position of the pier is marked higher and lower.
Question 4: What do you mean by lying on the raft? Does it involve the lower pier? Send me the drawings, which should be a downward beam or a pit in a pit
Question 5: What does 4/1/6 mean in the pier under the raft foundation in the CAD drawing? 5 points. If you are not mistaken, the landlord's three data are the methods of three columns, one is 4 wide, the other is 1, and the other is 6. The purpose of drawing this picture is to use several methods in a picture. Here is the reinforcement. The spacing between the main bars is 15. I hope I can help you
Question 6: What does XZD 3\11\8 mean in the architectural drawings? XZD 3\11\8 in the 3-minute architectural drawing means: the first step of the lower column pier is 3mm, the second step is 11mm high, and the third step is 8mm high. XZD is the structural expression of lower pier in raft foundation, which is mainly set on beam slab and flat raft foundation. In the concrete column and projection part, it is set according to the stress and structural needs of raft foundation.
Architectural drawings: The elevation of a building is an orthographic drawing obtained by projecting different measured surfaces of the building onto a vertical projection plane. Building profile is an orthographic drawing obtained by cutting the building with a vertical tangent plane according to the cutting position and projection direction indicated on the building plan. The building plan is a horizontal sectional view that is obtained by cutting horizontally above the windowsill of the house and removing the upper part for the orthogonal projection of the rest. The construction drawing of a building project, referred to as "construction drawing" for short, is a drawing that shows the overall layout of the project, the external shape, internal layout, structural structure, internal and external decoration, material practices, equipment and construction requirements of the building.
Question 7: What does the lower pier 2/8/1 mean by the distance?
Question 8: Under the condition that the reinforcement of the rectangular lower pier is under vertical load, the stress conditions of the lower pier of raft and the reinforcement of the independent foundation slab are not exactly the same, and it doesn't matter much which direction the bottom reinforcement of the pier is placed at the bottom (not which direction is downward). It is appropriate to put it at the bottom in the long direction.
question 9: how to add the JCCAD module of the lower pier of PKPM raft foundation-the human-computer interaction input of the foundation-the upper component-the pier, and just input it.
In the answer on the second floor, the option of adding a column pier has existed since the 5 version of PKPM, and the concept of waterproof board has only become popular in recent years, and it was probably only in the PKPM in 21 that the option of waterproof board anti-floating was added, so the column pier you mentioned can only be used for pile caps or independent foundations, and I don't understand what you mean at all. The column pier is a concept introduced from a flat floor. That is to say, if it is used in foundation, this pier will only appear in raft foundation to solve the problem that the local punching bearing capacity of raft is not enough, and there is no concept of pier in pile foundation or independent foundation at all. Where did your conclusion come from?
Whether it is a pile raft or an independent foundation, there are special building modules in the program, which do not overlap with the pier.
I'm afraid I don't know much about the concept that the height of an extra basement is equal to the thickness of the slab. I've never heard of it, and I don't understand the principle. Besides, you said that it is calculated according to the form of pile foundation, so how to calculate if it is a simple raft foundation?
the reinforcement of basement floor can be directly calculated by the pile-raft finite element module in JCCAD. Of course, I have to admit that the things calculated by PKPM can only be used after checking, but for the foundation floor which is not very complicated, it can still be directly calculated by it, and it is totally unnecessary to import it into slab module for calculation.
and on the second floor, your last paragraph is all about waterproof boards, which is irrelevant. The landlord is asking about the raft! ! What exactly are you trying to explain?
Just to remind you, it is applicable to calculate the bottom plate (including raft and waterproof board) by using the inverted floor method, so it is recommended to directly use the finite element method.
question 1: why can't the rigid lower pier improve the punching shear resistance of the raft? The rigid lower pier can't be found in the 11G11-3 atlas. What are the rigid lower pier and the flexible lower pier? What is the terminology in the specification? Or a personal patent' invention'. Please enlighten me, I am very lucky!