Session 60: Discussions on draft IS 1893 (Part 1 & 2) | Bhavin Shah

#structuralengineering #structuralengineers #civilengineers
STEEL-STR-006: Online course related to "Design of connections for Steel Structures" commenced from 10-MAY-23. If you wish you may register for the course. Link for more details: https://sqveconsultants.com/steel-str...

RS-STR-001 : Access 98 recorded sessions with 140+ contact hours. This library of recordings is a valuable resource for anyone looking to enhance their knowledge and skills in the field of structural engineering. Link: https://sqveconsultants.com/rs-str-001

Link for joining telegram group for technical discussion related to structural engineering: https://t.me/structuralengineering1

Register to receive regular updates through email: https://sqveconsultants.com/register

Discussions on draft IS 1893 (Part 1 & 2) is arranged on 18-MAY-23 at 8:30pm IST. Recently, BIS has published draft standard of IS 1893 (Part 1) and IS 1893 (Part 2).


CED 39(22343)WC: Draft Indian Standard Criteria for Earthquake Resistant Design of Structures Part 1 General Provisions [Seventh Revision of IS 1893 (Part 1)]

CED 39(22345)WC: Draft Indian Standard Criteria for earthquake resistant design of structures Part 2 Buildings [Seventh revision of IS 1893 (Part 1)]

Draft standard of IS 1893 (Part 1) contains general provisions on earthquake hazard applicable to all structures.

Draft standard of IS 1893 (Part 2) contains provisions specific to earthquake resistant design of buildings.

There are significant changes proposed in the draft standards, few of the same are mentioned below:

IS 1893 (Part 1)

Earthquake zone map is revised
Design horizontal acceleration coefficients are specified for strength and serviceability
Design methodology included for Architectural Elements and Utilities (AEU)
Categories of structures are included with requirement of different return period of earthquakes for strength and serviceability
Procedure included for site specific earthquake hazard
Performance expectation of the structure is detailed out.
Range of modulus of subgrade reaction is mentioned.
Soil stiffness calculations are added, etc.

IS 1893 (Part 2)

Criteria are added for masonry buildings and steel buildings
Response reduction factors are modified and renamed as Elastic force reduction factors
Provisions on torsion is updated
Structural plan density of the structural walls is varied with earthquake zone
For RCC buildings, stiffness modifiers have same values for strength and serviceability
Limits on lateral storey drift in building is mentioned with respect to seismic zone
Concept of torsional flexibility is added
Provisions added for buildings on sloping ground
Displacement calculations added for Architectural elements and utilities
Admissible structural systems in RC buildings for different earthquake zone is added.
Admissible structural systems in Steel buildings for different earthquake zone is added.
For steel buildings, for seismic zone 4, SMRF and EBF are suggested. For zone 5 & 6, only EBF is allowed, etc.
Last date for sending the comments to BIS is 25-Jun-2023.

As there are significant changes in the draft standards, we are planning to conduct the multiple sessions for the same. First of such session is planned on 18-MAY-2023 wherein Bhavin Shah (Founder & CEO, SQVe Consultants) will share his understanding of the documents from the perspective of practicing engineer.

Link for sending the queries in advance: https://sqveconsultants.com/2023/05/0...