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  Topic: How to apply Vertical earthquake load in etabs
hemal

Replies: 6
Views: 3114

PostForum: SEFI General Discussion   Posted: Sun Jun 30, 2019 6:30 am   Subject: How to apply Vertical earthquake load in etabs
(1) Vz = Av*W'

Av = 2/3 * Ah-max = 2/3 * Z/2 * I/R' *2.5


R'=R as per indian code. However other codes have specified between 1 to 1.5 in absence of exact value.


W''=W as per indian code. ...
  Topic: Seismic / Earthquake Load Combinations for structures/Buildings
hemal

Replies: 15
Views: 3467

PostForum: SEFI General Discussion   Posted: Fri Jun 21, 2019 11:30 am   Subject: Seismic / Earthquake Load Combinations for structures/Buildings
Dear Mr. Arunkumar,

Does it overrule clause 8.1, footnote 3 of IS 875 part 5?


Regards,
Hemal Mistry

[url=https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_Android ...
  Topic: Stiffness modifiers in IS 1893-2016-1 and draft tall building code.
hemal

Replies: 5
Views: 5542

PostForum: SEFI General Discussion   Posted: Sun Jan 14, 2018 1:25 pm   Subject: Stiffness modifiers in IS 1893-2016-1 and draft tall building code.
Recently released tall building code (IS 16700_2017) have separate drift requirements for wind and seismic loads.


According to this code, for unfactored wind load combinations drift limit is hi/5 ...
  Topic: Min. Horizontal Reinforcement For Slender Structural Walls As Per IS 13920 : 2016
hemal

Replies: 2
Views: 1856

PostForum: SEFI General Discussion   Posted: Thu Oct 12, 2017 2:19 am   Subject: Min. Horizontal Reinforcement For Slender Structural Walls As Per IS 13920 : 2016
Dear mayur,Plz note that there is mistake in euation of rho_h for slender wall. (rho_h-0.0025) in this equation shall be replaced by (rho_v-0.0025).In june 2017 at delhi workshop, BIS informed that th ...
  Topic: Load combination for Temp.Analysis
hemal

Replies: 11
Views: 16812

PostForum: SEFI General Discussion   Posted: Tue Oct 10, 2017 7:12 pm   Subject: Load combination for Temp.Analysis
ACI 318-2014 requirement for combining self straining loads (creep, shrinkage, temperature etc) with other load is attached here.


ACI 318-2011 have similar requirement as that of ACI 318-2014. As ...
  Topic: Stiffness modifiers in IS 1893-2016-1 and draft tall building code.
hemal

Replies: 5
Views: 5542

PostForum: SEFI General Discussion   Posted: Tue Oct 10, 2017 6:33 pm   Subject: Stiffness modifiers in IS 1893-2016-1 and draft tall building code.
Respected alpa madam,

Thank u for the valuable reply and clarifications.

I still got some queries / doubts :

[COLOR=#4F81BD](1) U mention that factored load stiffness modifiers in draft tall ...
  Topic: Stiffness modifiers in IS 1893-2016-1 and draft tall building code.
hemal

Replies: 5
Views: 5542

PostForum: SEFI General Discussion   Posted: Sun Oct 08, 2017 8:31 am   Subject: Stiffness modifiers in IS 1893-2016-1 and draft tall building code.
I would like to share my views on current topic. Respected sefi members may correct me where necessary.

ACI, EURO, NEWZEALAND and other foreign codes required to consider appropriate stiffness redu ...
  Topic: Design of Footing for EQ resistant structures
hemal

Replies: 18
Views: 9698

PostForum: SEFI General Discussion   Posted: Tue Oct 03, 2017 5:37 pm   Subject: Design of Footing for EQ resistant structures
For equivalent static method generally approximate time period from imperical equations is used, this time period is not affed by soil structure interaction. Time period calculated from modal analysis ...
  Topic: Stadd design-Soft storey model with 2.5 times factored moment and shear in soft storey portion
hemal

Replies: 1
Views: 1871

PostForum: SEFI General Discussion   Posted: Tue Oct 03, 2017 5:01 pm   Subject: Stadd design-Soft storey model with 2.5 times factored moment and shear in soft storey portion
Provision of designing soft storey elements for 2.5 times forces is from older IS 1893. latest IS 1893 different requirements for soft storey.
  Topic: Design of Footing for EQ resistant structures
hemal

Replies: 18
Views: 9698

PostForum: SEFI General Discussion   Posted: Sun Oct 01, 2017 10:16 pm   Subject: Design of Footing for EQ resistant structures
Dear sir,

Recent IS 1893_2016-1 requirement for modeling foundation fixity is as below:


"6.1.5 The soil-structure interaction refers to effects of the flexibility of supporting soil-found ...
 
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