Glad to announce our first LinkedIn Live session on 24-DEC-20 at 11:00AM IST related to importance of the interface between Geotechnical engineer & Structural engineer.
For safety & stability of the structure as well as for the cost optimization, interface between geotechnical engineer and structural engineer is extremely important in the project. We will discuss few such important interface areas and also, we will take up the discussion points suggested by the participants through live chat.
Vivek Kumar MITRA (Founder & CEO, VKM Geotechnics) will join us in the live session.
Recently, BIS published the amendments related to IS 1893 (Part 1) : 2016 & IS 13920 in November, 2020. The article shows some of the major changes made in the code as per my understanding. Only brief details are mentioned below, for details please refer the amendments.
Amendment no. 2 of IS 1893 (Part 1) : 2016
1. Clause related to vertical earthquake shaking is modified. The requirements are added for embankments, dams, bridges, etc. Also, the criteria for consideration of vertical earthquake shaking are modified.
2. The methodology for calculation of torsional irregularity is updated. The maximum displacement should be checked against the average displacement as against the minimum displacement in the previous version of the code. For more details, please refer the amendment.
3. For a building with re-entrant corners, three dimensional dynamic analysis to be performed with the flexible floor diaphragm. If there is a rigid diaphragm in the building then two separate analysis to be performed, firstly with flexible diaphragm and secondly with the rigid diaphragm. The worst effects to be considered from both the analysis.
4. For out of plane offset in vertical elements, the forces and moments due to earthquake effects in the elements connecting the two vertical elements with out of plane offset elements, the vertical element supporting the offset, and connections shall be enhanced by a factor of at least 2.5.
5. The provisions for stiffness irregularity are further clarified and few changes are made as well. In the note, it is mentioned that this provision is not applicable to such storeys, which have: (a) lower height, where services and utilities are housed, or (b) outrigger frame members placed in them.
6. For weak storey irregularity – buildings with strength irregularity shall not be permitted. In case, the weak storey is because of URM infills, provisions of 7.10 shall be followed.
7. Floating columns – Such columns are likely to cause concentrated damage in the structure, and are undesirable. A building with floating columns shall not be permitted, if the floating columns are part of or supporting the primary lateral load resisting system.’
8. Irregularity related to “Irregular Modes of Oscillation in Two Principal Plan Directions” is further clarified. It is also mentioned that this provision is not applicable to buildings with large podiums in the lower storeys.
9. For importance factor, “school” is replaced with the “educational building”.
10. OBF is not allowed in seismic zone III, IV & V.
11. Provisions for flat slab – structural wall system are further clarified.
12. Formula for Aw is modified and now it is same as when the code was published in 2016. It is mentioned that The value of Ta obtained shall neither be taken to be more than that given in 7.6.2 (a) nor less than that given in 7.6.2 (c).
13. In case of URM, RC members shall be designed for the governing combinations of stress resultants arising from structural analysis of:
a) Bare frame building, and
b) Frame building with URM infills.
14. For other details, please refer the amendment.
Amendment no. 2 ofIS 13920 : 2016
1. Steel reinforcement shall comply with all of the following:
a) Elongation shall be at least 14.5 percent,
b) Ratio of ultimate stress to 0.2 percent proof stress shall not exceed 1.25,
c) Ratio of ultimate stress to 0.2 percent proof stress shall be at least 1.15, and
d) Steel shall be only of strength grades with minimum 0.2 percent proof stress of 415 MPa, 500 MPa or 550 MPa, in addition to other requirements of IS 1786.’
2. In cl no. 9.1.1, modifications are made for calculation of nominal shear strength of concrete in a beam-column joint.
3. In cl no. 9.1.2, provisions related to design shear stress demand are further clarified.
4. For other details, please refer the amendment.
We are planning live technical discussion for the amendments on 20-DEC-20 at 11:00AM IST. Please share your comments / discussion points in the below comment box. We will discuss the same during live session of 20-DEC-20.
Link of the live session is attached below. Please like and share this video with the interested engineers in your circle.
Session 11 : Recent amendments for IS 1893 (Part 1):2016 and IS 13920:2016 – Live discussion
An online course related to earthquake resistant design will start from 17-MAR-22. Please watch the introductory video below:
EQ-STR-002 : Learn concepts of earthquake resistant design
Click below for more details and registration for EQ-STR-002
Thank you all for participation in the live session for “Importance of Quality Assurance in structural engineering firm” and for raising important discussion points. Bhavin Shah (Founder & CEO, SQVe Consultants) had conducted the session.
The link of video is shared below, in case you have missed out the live session.
Your further views/comments are welcome on the subject.
Join us for Live Discussion on 13-DEC-20 at 11:00am IST for “Importance of Quality Assurance in Structural Engineering firms”.
Quality assurance is one of the extremely important area for the design engineering consultancy firms. The Quality Assurance covers the broader aspects like compliances to the prevailing regulatory standards, meeting functional & aesthetics requirements, ensuring strength and stability of structures, effective interface to avoid rework at site, generating error free design documents, inclusion of sustainability, safety, constructability aspects, etc.Please tag the engineers in your circle who may be interested in the topic. Also, pl share your discussion points in the below comment box. We will take up the same during the live session.
Session 10 : Importance of Quality Assurance in Structural Engineering Firms
We had an interesting conversation on the subject : Importance of interface between Geotechnical & Structural Engineers. Your further comments / queries on the subject are invited.
For safety of the structure and cost optimisation, appropriate geotechnical investigation is extremely important. Apart from definite statistics, it can be said that the geotechnical failures are one of the major causes for collapse of the structures. In the typical fast track projects, sometimes proper interface is not carried out between geotechnical engineer and structural engineer which may affect adversely the major goals of engineering, i.e. safety of the structure and cost optimisation. Also, the project may get delayed substantially due to inappropriate soil investigation or may be due to lack of interface between geotechnical engineer and structural engineer.
VIVEK KUMAR MITRA is a renowned consultant in Geotechnical Engineering. He commenced his career as a GEOTECHNICAL ENGINEER at TATA Consulting Engineers Limited, Mumbai. Later he moved to organization like Bureau Veritas, Reliance, Impac, Egis Consulting Engineers. He was at Abu Dhabi for mega artificial Island Project in 2013 and represented ADNOC. He is geotechnical consultant for projects at Saudi Arabia, Kuwait, and Dubai.He has worked in projects in the areas of Offshore, Infrastructure, Power, Refinery, Petrochemicals & Marine. He also handled with distinction various projects in Ports & Harbors, Mega-Infrastructure, Artificial Islands, Dredging / Land Reclamation and Oil & Gas, Ground Improvement for ultra-soft soil. He is the Founder & CEO of VKM GEOTECHNICS which he started in 2019.
ABOUT THE FACILITATOR
Mr. Bhavin Shah is passionate about Engineering profession with two decades of experience. He is having a dream for enhancing the engineering profession in different organisations. He completed graduation in Civil Engineering and Masters in Structures from Sardar Patel University. He is having unique experience of working in the specialized firm of civil / structural consultancy which grew as multidisciplinary firm (VMS), large multidisciplinary firm (L&T Chiyoda Ltd.) and owner based engineering set up (Adani Infra (I) Ltd.). He worked in different organisations at different levels, starting from junior design engineer to CEO. He is Founder & CEO of SQVe Consultants.
Session 9 - Discussion about our upcoming online course GEO-STR-001 : Live Technical Discussion
We are glad to announce our first online course in the important area of interface between geotechnical and structural engineering. The course title is “GEO-STR-001 : Process of Interactive Geotechnical Investigation”.
For safety of the structure and cost optimisation, appropriate geotechnical investigation is extremely important. In the typical fast track projects, sometimes proper interface is not carried out between geotechnical engineer and structural engineer which may affect adversely the major goals of engineering, i.e. safety of the structure and cost optimisation. Also, the project may get delayed substantially due to inappropriate soil investigation.
The course is designed carefully to address the practical aspects so that the details can be readily used in the real projects. We are thankful of Vivek Kumar MITRA for his efforts in designing the unique course.
We are pleased to mention that it created a lot of excitement in the prospective participants. We have received numerous suggestions/questions from social media regarding the content and structure of the course. Part of the same will be covered in this course and we will attempt to cover the balance details in the future courses.
In next live technical discussion on 8-Nov-20, we are going to focus our discussion on the upcoming online course. The agenda of the session will be as follows:
To give overall introduction about content and structure of the course
Brief discussion about the interesting questions (around 35 nos.) received from social media
Collating the further important suggestions/questions received from the participants through live chat
Link for participating in all live technical discussions (EVERY SUNDAY at 11:00am IST):
Session no. 8 : Wind force estimation for tall structures as per IS 875-Part 3
As a part of weekly live technical discussion series, we had very interactive session for estimation of wind force for low rise structures. In the session of 1-Nov-20, we will focus our discussion on Tall buildings.
Wind forces & associated response of Tall buildings is much important not only for design of building but also from the point of view of acceleration & human comfort, surrounding wind flow pattern changes, glazings & facade design, pedestrian level comfort etc. Dynamic response evaluation is critical & particularly across wind response for tall slender buildings. Interference among buildings when they exist in a cluster are still not fully well understood and documented. Hence, our session on 1st November will be dedicated to Tall buildings.
Er. Dr. Abhay Gupta will join with us in the live stream as a guest expert. He has obtained his BE(Civil) in 1981 & subsequently ME(Structures) from SGSITS Indore; and Ph.D. from University of Roorkee, Roorkee (now IIT Roorkee) in the area of “Aerodynamic Interference in Tall Rectangular Buildings: Wind Tunnel Studies” in 1996. He has more than 35 years of experience in the field of Civil Engineering construction and Structural design. Dr. Abhay Gupta is one of the Directors of Skeleton Consultants Pvt. Ltd. Noida. Dr. Gupta has also worked as Principal consultant for establishment of Wind tunnel facility at Guna MP.
TONY ROFAIL – DIRECTOR, WINDTECH
Mr. Tony Rofail will also join the live stream as a guest expert. Tony has been the principal consultant at Windtech since 1991 where he has carried out or supervised wind engineering services for over 2,500 major projects around the world, including numerous landmark projects. This includes the study of structural wind loads and cladding pressures on large structures, wind environment and air quality studies, wind-noise, natural ventilation design and modelling, sustainable design as well as product development for aerodynamic performance.
Facilitator : Bhavin Shah, Founder & CEO – SQVe Consultants
Session no. 8 : Wind force estimation for tall structures as per IS 875-Part 3
Our all live sessions are streamed at the following link (Every Sunday at 11:00am IST) :
I have received suggestions from engineers to take up the discussion on irregularities as per table no. 5 &6 of IS 1893 (Part 1) : 2016.
It is a well established fact that the regular building perform better than the irregular buildings during seismic event. In IS 1893 (Part 1) : 2016, plan and vertical irregularities are defined in Table no. 5 & 6 of the code. The building is said to be irregular if any one of the irregularity is present in the building. It is mentioned in the code that all the efforts shall be made to eliminate irregularities by modifying architectural planning and structural configurations.
For each irregularity, mathematical limits are defined in the code as well as further action is detailed out whenever the irregularity exceeds the defined limits.
Table no. 5 – Plan irregularities :
Torsional irregularity
Re-entrant corners
Floor slabs having excessive cut-outs or opening
Out-of-plane offsets in vertical elements
Non-parallel lateral force system
Table no. 6 – Vertical irregularities :
Stiffness irregularity (Soft storey)
Mass irregularity
Vertical geometric irregularity
In-plane discontinuity in Vertical elements resisting lateral force
Strength irregularity (Weak storey)
Floating or stub columns
Irregular modes of oscillation in two principal plan directions
We will discuss each irregularity in detail during live technical discussion. The participants will also share their experiences related to the table no. 5 & 6 of the code.
You may share the specific queries / discussion point which may be taken up during live technical discussion.
Join us on next Sunday (25-Oct-20) for live technical discussion on different irregularities as per table no. 5 and 6 of IS 1893 (Part 1) : 2016. Please share discussion points for the same in the comment box. You may also circulate this message with the interested engineers in your circle.
Session no. 7 – Irregularities as per Table no. 5 & 6 of IS 1893 (Part 1) : 2016
Facilitator : Bhavin Shah, Founder & CEO – SQVe Consultants
Session 6 - Wind force estimation for low rise structures as per IS 875 (Part 3) : 2015
Wind forces & pressures are important in the design of structures being frequently occurring phenomenon. The fundamental IS code related to wind forces (IS 875- Pt. 3) was revised in 2015 and two amendments have been so far issued. It generated few practical difficulties.
So, In the next session, we will focus our discussion on “Wind force estimation for low rise structures as per IS 875 (Pt. 3) : 2015”. Tall buildings & Wind tunnel testing will be covered in the future sessions. Er. Dr. ABHAY GUPTA will join with us in the live stream as a guest expert. He has obtained his BE(Civil) & subsequently ME(Structures) from SGSITS Indore; and Ph.D. from University of Roorkee (now IIT Roorkee) in the area of “Aerodynamic Interference in Tall Rectangular Buildings: Wind Tunnel Studies” in 1996. He has more than 35 years of experience in the field of Civil Engineering construction and Structural design. Dr. Abhay Gupta is one of the Directors of Skeleton Consultants Pvt. Ltd. Noida.
Please share your questions / areas which you would like to get covered in the session pertaining to wind engineering.
Session 6 – Wind force estimation for low rise structures as per IS 875 (Part 3) : 2015
SQVe Consultants has taken up the initiative for launching the “weekly live technical discussion” series for focusing on the areas wherein industry is facing practical difficulties. To know more about SQVe : https://sqveconsultants.com The topic will be decided in advance and the technical discussion will be conducted through the live stream at youtube. The sessions will be organized on every Sunday at 11:00am.
Facilitator : Bhavin Shah (Founder & CEO, SQVe Consultants)
For safety of the structure and cost optimisation, appropriate geotechnical investigation is extremely important. Apart from definite statistics, it can be said that the geotechnical failures are one of the major causes for collapse of the structures. In the typical fast track projects, sometimes proper interface is not carried out between geotechnical engineer and structural engineer which may affect adversely the major goals of engineering, i.e. safety of the structure and cost optimisation. Also, the project may get delayed substantially due to inappropriate soil investigation or may be due to lack of interface between geotechnical engineer and structural engineer.
What is unique about this course?
The course is designed by the experienced engineers (Vivek Kumar Mitra & Bhavin Shah) who have together more than four decades of experience in the field of geotechnical and structural engineering.
The entire course is designed from the practical aspects which can be readily used in the real projects.
The course is designed to have an interactive mode so that the problems / doubts of the participants can be addressed.
The course includes a tutorial wherein the participants will get hands on experience related to geotechnical engineering.
Certificate will be issued on successful completion of the online course wherein the major areas covered in the course will be mentioned in the certificate.
Course Faculty
ABOUT THE SPEAKER
MR. VIVEK KUMAR MITRA is a renowned consultant in Geotechnical Engineering. He commenced his career as a GEOTECHNICAL ENGINEER at TATA Consulting Engineers Limited, Mumbai. Later he moved to organization like Bureau Veritas, Reliance, Impac, Egis Consulting Engineers. He was at Abu Dhabi for mega artificial Island Project in 2013 and represented ADNOC. He is geotechnical consultant for projects at Saudi Arabia, Kuwait, and Dubai.
He has worked in projects in the areas of Offshore, Infrastructure, Power, Refinery, Petrochemicals & Marine. He also handled with distinction various projects in Ports & Harbors, Mega-Infrastructure, Artificial Islands, Dredging / Land Reclamation and Oil & Gas, Ground Improvement for ultra-soft soil. He is the Founder & CEO of VKM GEOTECHNICS which he started in 2019.
ABOUT THE FACILITATOR
Mr. Bhavin Shah is passionate about Engineering profession with two decades of experience. He is having a dream for enhancing the engineering profession in different organisations. He completed graduation in Civil Engineering and Masters in Structures from Sardar Patel University. He is having unique experience of working in the specialized firm of civil / structural consultancy which grew as multidisciplinary firm (VMS), large multidisciplinary firm (L&T Chiyoda Ltd.) and owner based engineering set up (Adani Infra (I) Ltd.). He worked in different organisations at different levels, starting from junior design engineer to CEO. He is Founder & CEO of SQVe Consultants.
Methodology
The entire course is designed in the ONLINE mode.
The course will spread over 6 days with ~2 contact hours per day (total contact hours : 12)
During the course, the interaction can be done with faculty using customised discussion forum.
The sessions will be conducted using ZOOM software.
Tutorial will be given to the participants pertaining to practical questions.
Who should attend?
This course will be useful for following :
Experienced Civil and Structural Engineers
Graduate in Civil Engineering
Post Graduate in Geotechnical Engineering
Post Graduate in Structural Engineering
PhD in Civil engineering who want to enhance their geotechnical engineering capability.
No bar on experience limit for the participants. Anyone who has interest in interface between geotechnical and structural engineer can join this course.
The next batch of the course will commence from 22nd February, 2021. Kindly note that there are limited seats to ensure effective interaction with all the participants.
Important : This payment gateway and fee is only for the Indian participants. Interested foreign participants are requested to contact us at below mentioned email address to know about fees and the payment procedure.
For any further queries or details, please write to us at onlinecourses@sqveconsultants.com
You may also join the telegram group for further discussion related to the course : https://t.me/geo_str_001
In the below comment box, you may share the areas / details which you would like to get covered in the course.
