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  Topic: Safe bearing capacity of soil - Local shear failure?
es_jayakumar

Replies: 2
Views: 685

PostForum: SEFI General Discussion   Posted: Sat May 23, 2020 2:47 am   Subject: Safe bearing capacity of soil - Local shear failure?
Though not much related to the query, I will illustrate how the interpolation for a case between general shear failure and local shear failure is done, for a cohesion-less soil.
Suppose, your N value ...
  Topic: Beam Strip Raft Foundation
es_jayakumar

Replies: 4
Views: 542

PostForum: SEFI General Discussion   Posted: Sun May 17, 2020 2:19 pm   Subject: Beam Strip Raft Foundation
Slab-beam type raft looks fine for your case. As the raft will experience hogging moment at beam supports, top reinforcement alone will not suffice for raft slab.

E S Jayakumar
  Topic: load bearing structure
es_jayakumar

Replies: 6
Views: 567

PostForum: SEFI General Discussion   Posted: Sun May 17, 2020 11:23 am   Subject: load bearing structure
When I started by service in DoT, my boss used to tell me that plastering the masonry walls will increase its strength (specific to parapet walls). Has any study been carried out in this direction, to ...
  Topic: load bearing structure
es_jayakumar

Replies: 6
Views: 567

PostForum: SEFI General Discussion   Posted: Sun May 17, 2020 7:43 am   Subject: load bearing structure
Srinivasan sir,
Will pointing or plastering with rich cement mortar considerably improve the strength of the UCR masonry constructed in mud mortar ?

Regards,
E S Jayakumar
  Topic: load bearing structure
es_jayakumar

Replies: 6
Views: 567

PostForum: SEFI General Discussion   Posted: Sun May 17, 2020 6:34 am   Subject: load bearing structure
The strength of the UCR construction using mud mortar depends a lot on the workmanship. If the mortar used is raw and the workmanship is poor, the overall strength of the masonry will be on much lower ...
  Topic: Beam Strip Raft Foundation
es_jayakumar

Replies: 4
Views: 542

PostForum: SEFI General Discussion   Posted: Sun May 17, 2020 6:19 am   Subject: Beam Strip Raft Foundation
I hope this is a slab-beam type raft foundation. Why is it founded at ground level ? If the centre of gravity of the loads and that of the raft coincides, the upward soil pressure will be uniform. In ...
  Topic: Design of Long Span Trusses.
es_jayakumar

Replies: 12
Views: 1315

PostForum: SEFI General Discussion   Posted: Fri May 15, 2020 5:37 pm   Subject: Design of Long Span Trusses.
Sir,
As per my understanding, for any permeability value between 5% and 20%, we have to try for the worst effects (maximum load) by taking first Cpi = +0.5 and then Cpi = -0.5, to see which one gover ...
  Topic: number of secondary beam
es_jayakumar

Replies: 4
Views: 635

PostForum: New Members make Test Posts   Posted: Thu May 14, 2020 7:44 am   Subject: number of secondary beam
I would advocate provision of a single secondary beam, in consideration of the increased cost of concrete, steel & form-work of an extra beam, even though the main beam will experience a slightly ...
  Topic: number of secondary beam
es_jayakumar

Replies: 4
Views: 635

PostForum: New Members make Test Posts   Posted: Thu May 14, 2020 1:49 am   Subject: number of secondary beam
You can provide secondary beams in such a fashion that they divide the big size slab into smaller size panels of span (width) 3m to 4m.

E S Jayakumar
  Topic: Safe bearing capacity of soil - Local shear failure?
es_jayakumar

Replies: 2
Views: 685

PostForum: SEFI General Discussion   Posted: Wed May 13, 2020 1:49 pm   Subject: Safe bearing capacity of soil - Local shear failure?
You can discern the type of failure, based on N value, making use of the table given below. I hope, this can be used for any type of soil.

E S Jayakumar
 
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