Urgent!! If you understand architecture, let s take a look at the construction problem!!

If the position of the steel bar does not change, it is enough to chisel off the part that is poured on it, but remember not to use a strong force such as an air pickaxe (air compressor) to chisel out, which will destroy the concrete structure of the component and do not need to chisel off the part.

If you are a communication tower, you should have embedded bolts on the foundation to fix the tower, right? If it doesn't affect the installation, you don't need to smash it. Again, if you want to smash it, use a small hammer to smash it slowly, don't use a sledgehammer, don't use a pickaxe, that thing vibrates too much and will destroy the structure.

If it is only when pouring, pour more, and there is no problem with the binding of the steel bar itself, just chisel the high part.

As long as the steel bar is not cut off the top 50mm by mistake, it will not affect the quality, but the steel bar is also high, then the excess part cannot be cut off, because it will affect the quality.

Answer: First of all, the size unit of the component is not clear, if it is mm, 5mm more, there is no effect on the protective layer of the steel bar, if the excess part is cut off with a cutting machine, it should have little impact on the concrete structure and strength.

If the unit of size is not mm, the simple removal of concrete will affect the protective layer of the reinforcement and destroy the reinforced concrete member structure.

Other related components should be integrated, and the size of the associated components should be reduced without affecting the size and strength of the overall structure, so as to keep the total size unchanged. (Please believe this answer, my friend is a senior engineer, in the field of construction, he has obtained 4 national certificates, he is definitely a well-deserved expert in this field).

Supplementary question: The overall height of the tower foundation is 5cm, which has little impact on the use and can not be treated.

If you must remove the 5cm, you must be cautious, mainly because of the situation of the steel bar, if it is pure concrete, there is no concern, smashing or cutting off with a cutting machine does not have much impact on the concrete structure, if there is a steel bar, you must consider the protective layer, etc., if the steel bar is destroyed, the structure will be directly destroyed, and the protective layer is insufficient, which will affect the durability of the structure.

The prefabricated iron tower was changed, and many workers did this during the construction, or three other cushion blocks were added, and finally protected with concrete.

Generally, the protective layer of the column is 50mm, if it is chiseled, the steel bar is exposed outside, so the acceptance is also a problem! I think it's better to add 50mm to the other three, so that it can be leveled. The main force of the communication tower is under pressure, and the other three plus stirrups and pouring 50mm up may be the best and most convenient way.

There is no problem with such intensity.

The best way is to report to the design engineer and ask him to make a decision, 1. If the design is modified, he should consider whether the increase in weight is permissible for the bearing components and the strength of the foundation, and make a check to obtain feasible parameters.

2. If the excess part is cut off manually, the strength of the concrete product will be damaged.

3. It is best to report to the design institute and ask them to make a final solution.

1、a；2、b；3. B (correct civil engineering); 4、a；5、b；6、a；7、a；8、a；9、a；10、a；11、a；12、d；13、c；14、b；15、a；16、d；17、b；18、c；19、b、20、a；21、b；22、b；23、a；24、b；25、a。

Probably about the same. Time-consuming to see... Why don't you even give a point...

Volume water absorption: <2900-2550> <24 * > = mass water absorption: < 2900-2550 > 2550 = moisture content: < 2590-2550> 2550 = volume apparent density 2550 <24 * > =

Porosity: <2900-2550> <24*>=true density: 50

Why the answer to the porosity is.

Ask a question with you: the calculation is simple.

1. l0=, here is the calculation of the instability of the pressure rod, and you do not give the contact between the two ends of the rod;

2. The uniform load is known, and we guess that it is a beam, but the span diameter is not given;

3. There is no data here.

These questions are very simple, or you can do the math yourself, at least improve.

1.What are the types of frame structures according to the load-bearing system? Explain the pros and cons.

Answer: (1) Transverse frame load-bearing scheme; Advantages: The small number of transverse frames is conducive to increasing the lateral anti-lateral stiffness of the house; The cross-sectional size of the longitudinal tie beam is small, which is conducive to the ventilation and lighting of the building. Disadvantages: The cross-sectional size of the main beam is larger, which increases the height of the structural layer.

2) longitudinal frame load-bearing scheme; Advantages: It is suitable for large space houses, with large headroom and flexible house layout. Disadvantages: the depth dimension is limited by the length of the slab, and at the same time the lateral stiffness of the house is small.

3) Mixed load-bearing scheme of longitudinal and transverse frames. Advantages: The force of each member is more uniform, and the overall performance is better;

2.What are the advantages of the framework system? Explain the scope of its application.

Answer: The advantages of the frame structure system are: the integrity and seismic resistance are better than the mixed structure, the plane layout is flexible, it can provide a large use space, and it can also form a rich and changeable façade shape. Scope of application: widely used in industrial plants and public buildings.

3.What are the design steps for a frame structure?

Answer: (1) Structural layout; (2) Determination of column network and floor height; (3), the determination of the load-bearing scheme (4), load calculation; (5) Calculation of internal force and displacement; (6) Reinforcement calculation; (7), steel bar selection; (8) Draw structural construction drawings.

4.How do I determine the size of the column grid?

Answer: the frame structure column network should meet the requirements of the use of the house, at the same time, the specifications and types of components should be less, the column network spacing should not be less than, nor should be greater than, the column network span according to the use of different requirements, etc.

Depending on the structure of your home, if it is a shear wall structure, then the masonry wall part can be changed, if it is a frame structure, it is best not to change.

The warranty system of construction projects is different from the warranty of general commodities, and China's "Product Quality Law" clearly excludes construction projects from the scope of the law. According to the "Product Quality Law", the "three guarantees" system can be implemented for general goods during the warranty period. The Act also provides that if the seller intentionally causes the goods to have a defect in quality, they are not subject to the warranty period.

The reason why there is a separate legislation for construction projects to stipulate their warranty system is determined by the characteristics of construction projects. For construction projects, quality defects can generally be found within the warranty period. If there is a quality problem beyond the warranty period, the construction unit is still required to bear the warranty liability, which will increase the legal responsibility of the construction unit and is contrary to market fairness.

Of course, if the quality defect found during the warranty period is found and the construction unit fails to repair it or fails to repair it successfully, even if the warranty period has passed, the construction unit should also bear the warranty liability. As far as your problem is concerned, if you make a repair request within the warranty period and the contractor does not repair it, the contractor should continue to repair it. If you make a repair request during the warranty period, and the construction unit has already repaired it, and then there is a quality problem, it is no longer covered by the warranty.

It's very simple to calculate the construction mix ratio.

The laboratory mix ratio is:

Cement: Sand: Stone: Water = 1:::

The water content of sand on the construction site is 2%, and the water content of the stone is 1%, then the actual amount of sand on the construction site is 875*(1+2%)=

The dosage of stones is:

The water consumption is 210-875*2%.

The construction mix ratio and the amount of various materials per cubic meter of concrete are:

Cement: Sand: Gravel: Water = 350:::

Suggestion: The excavated foundation pit is segmented, and the excavation can be carried out in two sections, which affects the infrastructure more.

Section A is excavated to make the foundation reinforcement.

Section B excavation construction, section A foundation reinforcement binding, formwork reinforcement, concrete construction.

Section A earthwork backfill (with the soil excavated in section B), section B excavation.

Section A one-layer ground beam column construction, section B foundation reinforcement binding, formwork reinforcement, concrete construction.

Effectively save the cost of labor and earthwork transportation. Sectional flow construction work!

Reference!!

The focus is on how to transport the soil, because no matter what, you have to dig up so much soil, but you just have to reduce the amount of work that needs to be done.

It depends on the situation of the site, if possible, the construction of multi-point excavation, one-time transportation of soil.