www.sefindia.org

STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI]

 Forum SubscriptionsSubscriptions DigestDigest Preferences   FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups  RegisterRegister FAQSecurity Tips FAQDonate
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log in to websiteLog in to websiteLog in to websiteLog in to forum 
Warning: Make sure you scan the downloaded attachment with updated antivirus tools  before opening them. They may contain viruses.
Use online scanners
here and here to upload downloaded attachment to check for safety.

AAC block
Goto page 1, 2  Next
 
Post new topicReply to topic Thank Post    www.sefindia.org Forum Index -> SEFI General Discussion
View previous topic :: View next topic  
Author Message
dldesai
SEFI Member
SEFI Member


Joined: 02 Oct 2010
Posts: 7

PostPosted: Sat Feb 02, 2013 5:23 am    Post subject: AAC block Reply with quote

At present scenarion AAC Block used for the Massonary work inspite of using Brick.

I Want to know that AAC Block canbe used for UG TANK massonary ?

Request to all collageous and seniors to give their feedback.

Thanks,
D.DEsai
Back to top
View user's profile Send private message
Manoharbs_eq
General Sponsor
General Sponsor


Joined: 17 Jul 2012
Posts: 422

PostPosted: Fri Feb 08, 2013 9:48 am    Post subject: Reply with quote

NO, If we refer to the properties of AAC, we can clearly see that IT is porous and light weight.

any material to be proven for UGtank is
1) It must be less porous
2) The element undergoes lateral load when full and no soil fill and soil pressure in empty case. hence resistance to these load is essential.


Rgds
Manohar
Back to top
View user's profile Send private message
abhio
...
...


Joined: 08 Mar 2010
Posts: 513

PostPosted: Fri Feb 08, 2013 11:51 am    Post subject: Reply with quote

Would you build a tank in masonry at all?
Back to top
View user's profile Send private message
Manoharbs_eq
General Sponsor
General Sponsor


Joined: 17 Jul 2012
Posts: 422

PostPosted: Fri Feb 08, 2013 11:59 am    Post subject: Reply with quote

Small UG sumps upto 1.5 to 2m are constructed in brick or solid block masonry.

Rgds
Manohar
Back to top
View user's profile Send private message
dldesai
SEFI Member
SEFI Member


Joined: 02 Oct 2010
Posts: 7

PostPosted: Tue Feb 19, 2013 12:20 pm    Post subject: Reply with quote

If we can use the same size as used as Brick , and density of the same is matching..

Awaiting your valuable feedback.

Regards,
D.DEsai

Manoharbs_eq wrote:
NO, If we refer to the properties of AAC, we can clearly see that IT is porous and light weight.

any material to be proven for UGtank is
1) It must be less porous
2) The element undergoes lateral load when full and no soil fill and soil pressure in empty case. hence resistance to these load is essential.


Rgds
Manohar
Back to top
View user's profile Send private message
Dr. N. Subramanian
General Sponsor
General Sponsor


Joined: 21 Feb 2008
Posts: 5296
Location: Gaithersburg, MD, U.S.A.

PostPosted: Tue Feb 19, 2013 1:40 pm    Post subject: Reply with quote

Dear Er Desai,

It is not the size. It is the property of the material that counts. As rightly pointed out by Er Manohar, the aerated concrete block, as the name itself implies, will have lot of pores, which are purposely introduced to make it lightweight. They can be used for partition walls to reduce the weight. They should not be used for retaining water. In fact even brick walls are not good, even though they are used in small overhead tanks. It is preferable to keep the height of such brick walled tanks to about 2.5 feet. I have seen many tanks malfunctioning. Even in my office it started leaking and we totally abandoned it and using a plastic tank instead.

Best wishes,
NS
dldesai wrote:
If we can use the same size as used as Brick , and density of the same is matching..

Awaiting your valuable feedback.

Regards,
D.DEsai

Manoharbs_eq wrote:
NO, If we refer to the properties of AAC, we can clearly see that IT is porous and light weight.

any material to be proven for UGtank is
1) It must be less porous
2) The element undergoes lateral load when full and no soil fill and soil pressure in empty case. hence resistance to these load is essential.


Rgds
Manohar
Back to top
View user's profile Send private message
dldesai
SEFI Member
SEFI Member


Joined: 02 Oct 2010
Posts: 7

PostPosted: Thu Feb 21, 2013 12:30 pm    Post subject: Reply with quote

Dear Sir,

Thanks, for your valuable feedback, i appologize myself for late replying you.

REgards,
D.DEsai
Dr. N. Subramanian wrote:
Dear Er Desai,

It is not the size. It is the property of the material that counts. As rightly pointed out by Er Manohar, the aerated concrete block, as the name itself implies, will have lot of pores, which are purposely introduced to make it lightweight. They can be used for partition walls to reduce the weight. They should not be used for retaining water. In fact even brick walls are not good, even though they are used in small overhead tanks. It is preferable to keep the height of such brick walled tanks to about 2.5 feet. I have seen many tanks malfunctioning. Even in my office it started leaking and we totally abandoned it and using a plastic tank instead.

Best wishes,
NS
dldesai wrote:
If we can use the same size as used as Brick , and density of the same is matching..

Awaiting your valuable feedback.

Regards,
D.DEsai

Manoharbs_eq wrote:
NO, If we refer to the properties of AAC, we can clearly see that IT is porous and light weight.

any material to be proven for UGtank is
1) It must be less porous
2) The element undergoes lateral load when full and no soil fill and soil pressure in empty case. hence resistance to these load is essential.


Rgds
Manohar
Back to top
View user's profile Send private message
thirumalaichettiar
Silver Sponsor
Silver Sponsor


Joined: 26 Jan 2003
Posts: 3459

PostPosted: Mon Feb 25, 2013 4:27 pm    Post subject: Reply with quote

Dear Dr.N.S.,

If we use composite construction that is, if we pour concrete with nominal reinforcement sanwitched between the Areated concrete block and if we add chicken mesh and plaster inside the tank will it not be solution to U.G tanks?

I recommend and use this type of composite U.G tank for apartments with 4.5" brick on either side of concrete wall of 3 to 4.5" thick poured after building in stage of 3' height. Even I used it for basement wall instead of concrete retaining wll which saved a lot money and more stronger one.

T.RangaRajan.
Back to top
View user's profile Send private message
Dr. N. Subramanian
General Sponsor
General Sponsor


Joined: 21 Feb 2008
Posts: 5296
Location: Gaithersburg, MD, U.S.A.

PostPosted: Mon Feb 25, 2013 4:34 pm    Post subject: Reply with quote

Dear Er Rangarajan,

Ferrocement water tanks have be used- SERC has also published a small booklet for the design as well as giving ready made charts for various capacities, but the cement slurry should be applied with pressure so that we get a dense matrix. Important thing is that the material we use is impervious and able to take the tensile forces generated without much appreciable cracking.

Warm regards,
NS
thirumalaichettiar wrote:
Dear Dr.N.S.,

If we use composite construction that is, if we pour concrete with nominal reinforcement sanwitched between the Areated concrete block and if we add chicken mesh and plaster inside the tank will it not be solution to U.G tanks?

I recommend and use this type of composite U.G tank for apartments with 4.5" brick on either side of concrete wall of 3 to 4.5" thick poured after building in stage of 3' height. Even I used it for basement wall instead of concrete retaining wll which saved a lot money and more stronger one.

T.RangaRajan.
Back to top
View user's profile Send private message
dldesai
SEFI Member
SEFI Member


Joined: 02 Oct 2010
Posts: 7

PostPosted: Tue Feb 26, 2013 9:24 am    Post subject: Reply with quote

Dear Sirs,

Kndly refer the attached file for the U.G.Tank design like,

Give your valauble feedback for improvement..

Regards,

D.L.desai



Warning: Make sure you scan the downloaded attachment with updated antivirus tools  before opening them. They may contain viruses.
Use online scanners
here and here to upload downloaded attachment to check for safety.
WATER TANK 260213-Model.pdf
 Description:

Download
 Filename:  WATER TANK 260213-Model.pdf
 Filesize:  91.52 KB
 Downloaded:  233 Time(s)

Back to top
View user's profile Send private message
Display posts from previous:   
Post new topicReply to topic Thank Post    www.sefindia.org Forum Index -> SEFI General Discussion All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


© 2003, 2008 SEFINDIA, Indian Domain Registration
Publishing or acceptance of an advertisement is neither a guarantee nor endorsement of the advertiser's product or service. advertisement policy