Is it okay to put the steel bar like this? What are the details of the storage of rebar?

The lower reinforcement of the beam can be arranged in this way, but it is a waste of material compared to the long reinforcement, and the upper second row of reinforcement has a problem, not the 1 4 of the extension 3500, it should be the 1 4 of the net span of the extension 7000 (7000-column width).

The anchorage length is estimated to be enough, generally the upper first row of steel bars is a long steel bar or 1 3 places, the second row of steel bars is wrong, the middle should be adjacent to the maximum clear distance of 1 4, if the column is 600, the extension is 1350mmAs long as the anchorage length of the lower part is enough, there should be no problem, but pay attention to the seismic problem.

Such a large span must be a frame beam.

1. I don't know if you are earthquake-resistant or non-earthquake-resistant, and what level.

2. I don't know if your beam is a roof beam or a beam in the middle layer, or a frame-supported conversion beam.

3. I don't know the concrete number.

4. I don't know the size of the steel bar.

5. I don't know the size of the column.

The end of the straight anchor is enough to anchor the length of the anchor can be a straight anchor, if not enough should be bent to the end of 15 * d, the upper and lower part of the same. The bending of the upper reinforcement is one of the practices of the roof frame beam, see page 55 56.

The second row of reinforcement should extend out of the longer span 1 4, that is, (7000 - column width) 4

If the drawings do not clearly state, the lower steel bar can be lengthened, or it can be disconnected in this way, and it should be anchored into the column for an anchorage length, the specific length of which is on page 33 of 03G101, calculated according to the seismic grade and diameter and the concrete grade. 15*d is the anchorage length of the erection reinforcement, not the main reinforcement.

Finally, it is recommended that you study the atlas well before cutting. In case there is any problem with the structure, you are not right according to the drawings, but it is all your responsibility!

You still go to the designer to explain the situation, let the family see how to deal with it, if you change it yourself, you will be very responsible, don't cut corners in the project.

(1) The steel bars entering the construction site must be listed and stored in strict accordance with the batch grade, steel number, diameter, etc.

2) The steel bar should be put into the warehouse or shed as much as possible, and when stacked in the open air, a high-terrain, flat and solid site should be selected.

3) The stacking of steel bars should be overhead, not less than 200mm above the ground. Drainage ditches should be set up around the site or warehouse to prevent water accumulation.

4) When the steel bar is transported or stored, the sign shall not be damaged.

5) The steel bar shall not be put together with acid, salt, oil and other items, nor can it be close to the workshop that may produce harmful gases.

6) The processed steel bars should be divided into project names and component name numbers, and the tags should be stacked neatly.

When the steel bar is transported into the construction site, it must be stacked separately according to the batch grade, grade, diameter and length, and the quantity must be indicated, and there shall be no confusion.

When stacking, skids should be added under the steel bar, and the ground should not be less than 200mm to prevent the steel bar from being corroded and polluted.

At the same time, do not go close to the workshop that produces harmful gases to avoid polluting and corroding the steel bar.

BecauseconcreteBearableA lot of pressure, butThe ability to resist the pull is very low, generally only the ability to work under pressureIt is easy to break when it is tensiled, which greatly limits its scope of application. In beams, slabs and other flexural components, because the upper part is compressed and the lower part is tensile when stressed, when used in concrete to make this kind of flexural member, it is easy to break after being stressed. If one is placed on the tension part of the memberA material with high tensile strengthRebar, and make the steel and concrete form a whole, and the common force is subjected to the force, so that they can exert their respective strengths, and can be both compressed and tensiled.

Therefore, steel bars should be placed in the concrete. This kind of reinforced concrete is called reinforced concrete.

The reinforcement solves the tensile force, and the concrete resists compression.

Why are there bones in the meat, understand?

For the arrangement of raft reinforcement, for the lower reinforcement, if it is a two-way plate, generally which reinforcement is below and which is below, is not particularly restricted. For one-way plates, the stressed ribs are at the bottom and the attached ribs are at the top. For the upper layer of reinforcement, it is the opposite of laughing at the lower layer.

It should be noted that the thickness of the protective layer, the overlap of the reinforcement and the anchoring of the end reinforcement.

Supplement: raft foundation, also known as slab foundation, full hall foundation. It is to connect all the independent foundations or strip foundations under the column with contact beams, and then pour the bottom plate as a whole.

It is composed of a base plate, beams, etc. as a whole. The building load is larger, the bearing capacity of the foundation is weak, the concrete bottom plate is often used, the building load is beared, the raft foundation is formed, its integrity is good, and the uneven settlement of the foundation can be well resisted. The raft foundation is divided into a flat raft base and a beam plate raft base, and the flat raft base supports local thickened raft types; The beam-plate raft base supports two forms: upper flat and lower flat rib beam.

Generally speaking, when the foundation bears the rubber lift, the force is uneven or the foundation is weak, and the raft type foundation is used. Due to the simple construction, the flat raft foundation is widely used in high-rise buildings.

This is a difficult problem to be solved.

Answer: JL5(28).

In accordance with the 11G101 atlas beam lower length beam longitudinal reinforcement connection position requirements lap. (1) The outer lap of the longitudinal reinforcement node of the lower part of the frame beam.

When the lower reinforcement of the beam cannot be anchored inside the column, it can be lapped outside the node. When the diameter of the reinforcement of adjacent spans is different. The lap position is located in a span of smaller diameter, and the net distance between the lap area and the column is the net height of the beam).

In order to prevent the overlapping of the longitudinal reinforcements of the beam in the column support node from being too dense, the usual practice of construction in practice is generally through the separation of column nodes.

First, the method of separating one pass is more reasonable than the lap outside the column.

2), the lower longitudinal reinforcement of the frame beam is anchored.

The new atlas stipulates that the bending anchor node of the lower reinforcement of the beam is "extending to the inside of the hook section of the upper longitudinal reinforcement of the beam or the inner side of the longitudinal reinforcement on the outside of the column". The old atlas has the same bending anchor nodes for the upper and lower levels of reinforcement. When the implementation of the new atlas, the end of the upper and lower longitudinal reinforcements of the beam should be provided with two kinds of protective layers according to the protective layer, and it is not right to deduct 25 mm before, and the actual construction blanking is not deducted according to the prescribed standard protective layer, the long blacksmith and the short carpenter, the steel bar is rather slightly shorter, and the long one can not be put in or the top mold is exposed.

3) In the case that the end support of the beam of the seismic frame is a beam, the stirrups can not be encrypted, and the specifications and quantities of the stirrups at the end of the beam are determined by the design. When the beam is used as a frame beam support, there is a twist between them, so the stirrups do not need to be encrypted.

4) The height difference between the floor frame beam and the roof frame beam changes the structure of the support.

I don't understand, can you give a screenshot, the position of the cap should be the main beam, or the foundation even the beam beam is directly anchored into the cap, there should be no cross longitudinal bars.

There is an explanation for the construction of non-cap positions.

According to page 71 of 11G101-3, Note 7, it should be described according to the designIn addition, the opposite force of the foundation is not completely right, for the flat raft foundation, the inverted beam method is OK, but for the pile raft foundation, the inverted beam method is not applicable, and it should be calculated according to the finite element of the shell structure.

The main beam is on the top. The secondary beam is below, and the force of the foundation is reversed.

The main beam reinforcement is below. The secondary beam is on top.