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[k.gangadharan]

to�� �econf@www.buonovino.com (econf@www.buonovino.com)
sub: econference of tall buildings as per Is IS� 16700/2017
Cl. 7.3.10 The flexibilty of the building shall be such that the flexibility of inter storey drift stability coefficient -[theta (Pu Delta/H)] exceeds 0.2 ,where Theta� is not defined. This may be clarified or defined. whether Pu refers to the particular floor for which interstorey drift is calclated or not.Pu is definedin cl.4 symbols.
Cl。7.3.14多个塔楼连接由一个podium shall be modelled separtely and integrally.� DOES THIS MEAN THAT �EACH TOWERS SHALL BE MODELLED SEPARATELY WITH THE PODIUM OR WITHOUT THE PODIUM AND ANOTHER MODEL WITH TWO TOWERS TOGETHER WITH THE PODIUM. �IS THIS THE SAME CASE WHEN THERE IS EXPANSION JOINT WITH PODIUM AND �TWO TOWERS.thanks & regardsGangadharan.k

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[va]

Dear All,

1. More clarification on Cl7.3.10 on how to calculate inter storey drift stability coefficient is required which is not clear. If some one explains with some numbers it will be helpful.
   
2. What is expected under clause 7.2.d for P- delta analysis shall be clarified. Is this for static earthquake base shear and dead loads?
   
3. Clause 9.7.1 clarification on zoned spring constants is required. It should be clearly mentioned that � in plan area of raft variation of strata can be considered by using appropriate spring constants.�
   
4. I personally feel that combined building model including structure + raft on springs should not be used. Superstructure and substructure modelled should be separately analysed and not mixed together. As the springs are compression only springs and thus iterative analysis is required to find the contact area for each load combination. I would like to know comments from experts.

Regards.
Hemant Vadalkar
Consulting Engineer
Mumbai.

From:k.gangadharan
Sent:16 March 2018 18:30
To:econf@www.buonovino.com
Subject:[E-CONF] sub: tall building code IS 16700 / 2017



toeconf@www.buonovino.com(econf@www.buonovino.com) (econf@www.buonovino.com (econf@www.buonovino.com))
sub: econference of tall buildings as per Is IS 16700/2017
Cl. 7.3.10 The flexibilty of the building shall be such that the flexibility of inter storey drift stability coefficient -[theta (Pu Delta/H)] exceeds 0.2 ,where Theta is not defined. This may be clarified or defined. whether Pu refers to the particular floor for which interstorey drift is calclated or not.Pu is definedin cl.4 symbols.
Cl。7.3.14多个塔楼连接由一个podium shall be modelled separtely and integrally. DOES THIS MEAN THAT EACH TOWERS SHALL BE MODELLED SEPARATELY WITH THE PODIUM OR WITHOUT THE PODIUM AND ANOTHER MODEL WITH TWO TOWERS TOGETHER WITH THE PODIUM. IS THIS THE SAME CASE WHEN THERE IS EXPANSION JOINT WITH PODIUM AND TWO TOWERS.thanks & regardsGangadharan.k


Posted via Email