16.8.4. Horizontal Slip of Surface Foundations

H

huseyinakkus56

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Hello.. Are the calculations in the image made by the program? If not 1-) Vth is the design horizontal force acting on the foundation base 2-) Can you help to find the Rpt Design Passive Resistance? (YRp is already in the table, I can't find the Rpk)
 
Hello there; Rpk is the passive side soil thrust value that is under the ground including the height of the foundation and the height of the basement curtain and resists the sliding of the structure. If there is no basement in your building and your foundation height is not too high, I recommend you ignore this value. Already, the frictional resistance under the foundation will be sufficient for the slip control of the structure. The Vth value is the total horizontal force acting on your structure. It is given in the table at the beginning of the dynamic analysis report. You can use the larger of the values found from Modal or Equivalent. Best regards.
 
"2m project":20trpvj8" said:
Hi, Rpk is the soil thrust value of the passive side, which is under the ground including the height of the foundation and the height of the basement curtain, and resists the sliding of the structure. If your building does not have a basement and your foundation height is not too high, ignore this value. I recommend you to do it. The frictional resistance under the foundation will be enough for the slip control of the structure. Best Regards.
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All the projects have a basement floor. How can I find the value of this thrust?
 
Hello there; Civil Engineers who prepare the geotechnical report do these checks under normal conditions, in the simplest form if you will: Rpk = h² (Buried structure height) x soil unit volume weight * Kp (Passive Soil Coefficient)/2 "Kp can be calculated from Equation 16.25."
 
Hello there; Mr. Thanks to the 2m project, if you want to make a more detailed calculation (considering the YASS relationship between the static+dynamic effect and the ground behind the basement curtain); The calculation of Rpk-X and Rpk-Y separately for each direction is made according to the following algorithm. Here, the dynamic effect is also taken into account. (B and L are basic sizes) Note: Sn. Thanks also to Mirza for his contribution.
 
Is there anyone who has prepared a sample geotechnical report? As far as I can see, no ground survey is done as a data report, geotechnical report, geological engineers still give Zem value, things continue in the same way in municipalities where technical personnel are not enough... Sent via iPhone using Tapatalk
 
Dear İlkem, thank you for your effort and sharing. Mr. Muvayapi, I can recommend you to examine the templates prepared by Mr. 2mproje for the preparation of the reports and give them to the team that will prepare the ground survey report. You can follow the topic below.
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Hello there; The image about finding the Vth value from the dynamic analysis report is attached. You can use the higher modal or equivalent earthquake load values. If you are going to use Modal Vt, it would be more accurate to use it by multiplying it with the magnification factor at the bottom of the same table. Best regards.
 
Thank you Mr. Mirza. When you say to the team that prepared the ground survey, should we prepare a different team report or should we prepare a joint report together with the project author, civil engineer, geologist and geophysicist? As far as I know, in the new regulation, the ground survey should be prepared in two parts as data report and geotechnical report. I perceived the calculations in the geotechnical report section as the responsibility of us, the project author, civil engineers. What is your opinion on this?
 
Sir, our municipality wants it as you say. We prepare Geotechnical report together with Static Project Author and Geology-Geophysics Engineers. They also prepare Data report.
 
Geology and Geophysics engineer will prepare the data report. Geotechnical expert İnş. Eng. will prepare. There is an example of a report prepared by the Ministry of Environment and Urbanization on this matter by taking the opinions of the relevant institutions. As far as I know, the draft subject is finished. It is about to be burned.
 
As far as I researched on the internet, it was said that the project author will be made by a civil engineer, according to the opinion received from environmental urbanism. If the geotechnical specialist is made by the civil engineer, the job becomes inextricable. How healthy the room would be if it was built by non-specialized civil engineers, the values given by geologists.... Sent via iPhone using Tapatalk
 
As can be seen from here, now every business. eng. will not be able to calculate. TBDY 2018 wants to specialize in its branches (subjects).
 
The definitions of the data report and geotechnical report specified in section 16 are given in the photo you shared, but the part "planned by the geotechnical expert civil engineer" is the interpretation of Mr. Ozan Dadaşbilge, who prepared the presentation that you shared. As much as I agree with this interpretation, unfortunately, it is obvious that this will not happen under market conditions. Because there will not be enough geotechnical engineers and the relevant law article will be softened and the project author will be turned into a civil engineer. The views taken from environmental urbanism seem to be in this direction. As the project author, I think it is necessary to discuss this issue and share what we know with each other, how well we know how to prepare geotechnical reports. The only obvious thing about ground survey is that a multidisciplinary study should be done. Geology and geophysics engineers take care of the subject and say that we calculate everything, we do it. Although civil engineers have account responsibilities, we, civil engineers, do not take care of this issue alone. For most of our engineer friends, the soil survey written on a notepad consists of the floor class, the ground and the bed coefficient. No one is examining whether there is liquefaction, sitting or swelling. In the soil survey reports, there are many results that are not related to the spts made on the rocky ground, Vs slip speeds that are not related to the soil class... Is there anyone who knows, examines, checks how they can be prevented. Sent via iPhone using Tapatalk
 
Although you are right in what you say, Mr. muvayapi, with the authority given to the chambers by the Ministry, chambers open courses and there are postgraduate trainings in universities. If you don't just have an expert let's all do this. The regulation is general on its name. Friends who write the regulations are technical people like us, so it is not what the sentences they write mean, but the way they understand it. If you look at the scope of Annex 16D of Chapter 16, they are explained here as an appendix. If this explanation is not enough, read Chapter 17 thoroughly and some designs intersect with the rules here in the sections on other topics, but what do you think about this (for example, column and beam dimensioning). The person you are talking about is the person who prepared the data and baseline report template to be released.
 
It is very good if the courses organized by Mr. Saridurmuş Chambers are valid for specialization. One of our instructors who wrote the regulations, those who organize seminars on imo have videos and they declare that they can't get what they want right away. My fear is that the reports are not prepared by the Geotechnical Expert, but by non-experts. There is a design supervisor requirement for the Zf floor class. Unfortunately, we have colleagues who will play with the ground value just so that the program does not give an error on other floors.
 
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