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Author Message
  Topic: Initial size of column
mjnasar

Replies: 2
Views: 544

PostForum: SEFI General Discussion   Posted: Thu Sep 10, 2020 1:46 pm   Subject: Initial size of column
Dear Eng.Ramu_se

Simple method

calculate tributary area ( load contributing area on column )

X

1.4 ( Dead load = 5kn/m2 ) + 1.6 ( live = 2 kn/m2 )

= LOAD P

By formula P = 0.80 * ...
  Topic: Need of Detailing Awareness For Safe Structures
mjnasar

Replies: 311
Views: 258425

PostForum: SEFI General Discussion   Posted: Thu Sep 10, 2020 8:45 am   Subject: Re: Reinforcement detailing of Joint
Dear Eng.Abhishek Kumar

i suppose we provide length of bar at joints for

Development length
- the stress in the the bars should transfer to surrounding concrete
and the stress should be i ...
  Topic: COLUMNS MISPLACED
mjnasar

Replies: 5
Views: 2301

PostForum: SEFI General Discussion   Posted: Wed Nov 06, 2019 1:40 pm   Subject: COLUMNS MISPLACED
Dear Engineer

Please see the attached sketch it might help you

regards
http://https://www.sefindia.org/forum/https://www.sefindia.org/forum/files/1_113.jpg
  Topic: FEASIBILITY OF CASTING NEW RCC SLAB ON TOP OF EXISTING BRIDGE SLAB
mjnasar

Replies: 7
Views: 2816

PostForum: SEFI General Discussion   Posted: Sun Oct 27, 2019 1:56 pm   Subject: FEASIBILITY OF CASTING NEW RCC SLAB ON TOP OF EXISTING BRIDGE SLAB
hi,

the idea seems good

As the increase in load can be compensated by
increase in strength due to combined action of nslab concrete & existing beams ( acting Tee beams )

this aspec ...
  Topic: PEB design
mjnasar

Replies: 21
Views: 27548

PostForum: SEFI General Discussion   Posted: Wed Sep 18, 2019 12:27 pm   Subject: PEB design
Dear Engineer

I suppose the tie beams, framings & cross ties at the

level of bottom of steel or

level of grade beam

will reduce / balance moments.

-Try as 3d frames at level of ...
  Topic: Design of RCC post's foundation for lateral load
mjnasar

Replies: 8
Views: 2366

PostForum: SEFI General Discussion   Posted: Wed Jul 24, 2019 12:58 pm   Subject: Design of RCC post's foundation for lateral load
Eng.Kumar

I suppose basically check stability
by assuming same as block foundation for Poles

Considering active / passive earth pressure on the block

see snap shot attached

regards
  Topic: Shear force and Shear design in CSI SAFE
mjnasar

Replies: 2
Views: 1135

PostForum: SEFI General Discussion   Posted: Sun Mar 24, 2019 2:24 pm   Subject: Shear force and Shear design in CSI SAFE
Dear Eng.Aakash

Please see attached safe screen capture,

in the manual calculations we are assuming the point load on the single point only
( the sharp change of triangles in shear diagram)
...
  Topic: SEISMIC JOINTS
mjnasar

Replies: 6
Views: 1918

PostForum: SEFI General Discussion   Posted: Thu Mar 07, 2019 10:54 am   Subject: SEISMIC JOINTS
Dear Engs,

Please correct the following case ([SIZE=2][FONT=Arial Narrow] [/FONT][FONT=Verdana]IS 1893 (Part1): 2016)[/FONT][/SIZE]

[FONT=Times New Roman][/FONT][FONT=Arial Narrow,sans-serif][SI ...
  Topic: Possible reasons for slab crack
mjnasar

Replies: 1
Views: 990

PostForum: SEFI General Discussion   Posted: Sun Mar 03, 2019 2:07 pm   Subject: Possible reasons for slab crack
Dear Eng.Niresh

Please provide Framing plans
and share the first hand opinion for direction of review

regards
mjnasar
  Topic: IS IT POSSIBLE TO DESIGN A 100MM SLAB, if the required depth is 130mm as per L/D ratio??
mjnasar

Replies: 6
Views: 1714

PostForum: SEFI General Discussion   Posted: Sun Mar 03, 2019 8:10 am   Subject: IS IT POSSIBLE TO DESIGN A 100MM SLAB, if the required depth is 130mm as per L/D ratio??
Eng. Renju Mathew

As the slab moment capacity is more than required,

we can reduce the deflections by camber And

Camber can be provided equal to immediate DL deflection

Regards
 
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