Subasman kotu garden beams

[27defne27]

good work on the foundation, connect all the columns with the basement curtain. Give the basement level formwork and reinforcement plan. Show reinforced concrete on the fill at the basement level. In the earthquake code 16.8.5.2, tie beams can be constructed at the height from the bottom of the foundation to the bottom of the column in accordance with the foundation excavation. or reinforced concrete slabs may be used instead of 16.8.5.5 tie beams. In this case, the slab thickness shall not be less than 15 mm. The calculation of the slab and the reinforcement placed in it, given by equivalent 16.13, should be shown. What I'm wondering is, when the regulation says that it is enough to do one of these two items, the building control control elements should be done at the same time. thanks.

 

[Mirza]

These are the rules related to the tie-dye described in the regulation. You can make the tie beams either with basement shears, tie beams or with a sufficiently thick reinforced concrete plate. The friends at Building Inspection may have mentioned a defacto situation in practice. Namely; you have a foundation without a basement that you need to bury due to the depth of frost. You have established the upper level of the foundation at -1 m. 1. All columns are connected to each other with basement curtains/tie-beams (20x100, 25x100 etc.) 2. Pools will be formed in between, these pools are filled with filling material. (stabilized fill is preferred) 10~15 cm Q188/188 or fi8/20 single-row reinforced concrete is poured on the 3rd fill, in the 4th project, the sub-basement level formwork and reinforcement plan is given, the sections are processed... You can fill the entire area and do the same application, but if you are not sure that the contractor who will perform the application will compact the filler well, my advice is to connect all the columns and add a reinforced concrete slab, and you will eliminate the collapses caused by the filling, which may not be well compacted. You do not need to calculate the reinforced concrete slab you will place here. Placed reinforcements are constructive. You can think of it like field concrete. As a result; What is desired is a detail originating from the filling, and adding a detail similar to the above detail to your drawings, as well as the sub-floor formwork plan, will do the trick. good work...

 

[27defne27]

First of all, thank you for your answer. As you mentioned, I am returning the building from the outside with a 25 cm sub-basement screen and I am giving its details, I am also giving the 15 cm steel mesh detail. I will add the desired sub-floor reinforcement plan as well as the formwork plan. While these are sufficient, I get a request that other columns in the building should be connected with a basement curtain.

 

[Mirza]

First I suggest you find out: What are the reasons for connecting all columns with basement bulkheads? 1. If "it acts as a tie beam" they are wrong, I guess you have a raft foundation... your columns will not behave independently of each other anyway. No need for the extra "tie". 2. If they have hesitations about the compaction of the filler, if they think that a more compact filling can be obtained by reducing the areas, this may be more reasonable, there is no harm in doing it. They can recommend, but they can't force it... If the applicator uses stabilized material, watering in layers, and putting a clean plate on top of it, the goal will be achieved. The walls and coatings that will come on top of this will not be deformed. If they have a 2nd opinion, it is not enough for them to just have the columns connected, they should ask you to add a plinth/beam wherever you see a wall. If the walls that will come over the pools are in the middle, a sub-basement/background is built under these walls. (Filling compaction is not very reliable. The contractor generally uses backfill material instead of stabilized material... this application is preferred to eliminate such deficiencies and increase the building comfort)