Weekend Discussions Archieve

Week – 36 Seepage in the buildings

[7:46 AM, 9/1/2018] TecKXpert Working Committee: Dear All,
Kindly note that, The title for this Weekend discussion will be ” Seepage in Buildings”
Possible Trigger Points:
1. Why there is more Seepage in today’s buildings, while ancient buildings doesn’t have seepage at all.?
2. What is the process of Traditional method of Water proofing?
3. What are the water proofing methods available presently?
4. Why present methods are failing?
5. What are all the impacts of Water seepage?
6. Why most of the expansion joint treatment fails?
7. Best practices in construction in terms of water seepage treatment and expansion joint treatment??
8. Is really water proofing required??
9. Is there anyone who does the traditional method of waterproofing?
Contact details pl.
10. How effective the tarr sheet in water proofing?
As usual our TecKnow Weekend discussion will start at 3PM on Saturday 01/09/2018.
Come. Let us have a great Knowledge sharing discussion
Regards,
TecKXpert Communication Team

[7:48 AM, 9/1/2018] TecKXpert Working Committee: General Rules of Discussion:
1. The objective of this discussion must be knowledge sharing only.
2. Please do not promote or demote or mention any brand name in your discussion.
3. Not required to mention where ( which site) the failure happened.
4. Discussion must be subject specific and gentle. Pl do not hurt anyone.
5. Pl do not lead the discussion to other subject.
6. Pl do not post anything other than this specific subject during conversation is ON.
Thank you all in advance.
Let’s have a great knowledge sharing discussion

Discussions:
[8:32 AM, 8/30/2018] TecKXpert Working Committee: Madam,
Good Morning.
Seepage is the very commonly faced problems in today’s buildings.
But we have a 100 years old building in my home town where even now there is no seepage at all even during heavy monsoon rains.
I strongly believed that there is a very traditional method of water proofing which can resolve the issue of seepage straight away.
Hope Renga sir can share his experience better.
Others view please…

[8:33 AM, 8/30/2018] Jayanthi Ma’am EE: 🙏🏻🙏🏻🙏🏻🙏🏻

[8:34 AM, 8/30/2018] Jayanthi Ma’am EE: Ours is 18 years old building where in most of the flats we ate facing this problem and also the pillar damage due to this persistent leakage questioning the strength

[8:38 AM, 8/30/2018] TecXpert KT Ilango: M/s Cera chem is in the field of supply and apply regarding the rectification of leaks in concrete surfaces…You can contact Mr. Moorthy who is the director of that group….He sits in chennai and will guide…Providing his number now….

[8:48 AM, 8/30/2018] TecKXpert Working Committee: A temporary immediate fix what we did in my previous company was applying tarr in cracks in the roof.
1. Find all the cracks in surface of roof.
2. Carefully chip out the top portions and apply little heat on the surface with blow lamp.
3. Apply molten tarr on the surface and apply heat again with blow lamp on the applied tarr.
4. Let it spread inside the cracks.
This will stay for one monsoon.
We tried lots of other chemicals, mix everything and other methods too.
But all failed attempts only.
Kindly share others experience too.

[8:53 AM, 8/30/2018] +91 98417 32152: Sir
The cracks in the building can be attended with below mentioned ways in my experience
Filling the crack area with Dr. Fix crack powder
Applying chemicals in injection method..
Injection method is very effective…
[9:04 AM, 8/30/2018] Rangaraj Accenture: Agree. My house at my native village is about 300+ years old and not even a single seepage so far. Traditional water proofing method (Jaggery, Kadukkai Powder under fermented condition) works very well even now, which we replicated in our 2015 built new house. It’s working well. 1st line of defence must be heat emissive paint so that solar heat is rejected back to atmosphere, good weathering course earthen tiles, water proofing as mentioned above, weathering course using brick bats and calcined lime, Modern Fosrock water proofing chemical blended roof concreting finished in a single pour helped in achieving this. Of course period maintenance needed for any structure.

[9:13 AM, 8/30/2018] Jayanthi Ma’am EE: Is there any such ready mixture available in the market?

[9:38 AM, 8/30/2018] TecKXpert Working Committee: The traditional water proofing mixture is not readily available. But it is prepared on-site then and there.

[2:28 PM, 8/30/2018] +91 89396 97972: These are construction issues, If building is constructed with basic methods with out any deviation then no need to waterproofing methods,

[2:30 PM, 8/30/2018] +91 89396 97972: Being a Civil Engineer, I have built own house without any waterproofing compounds and it is still standing well even after 15 years without any leakage and no major cracks

[2:31 PM, 8/30/2018] +91 89396 97972: Construction is made out sand as prime material, Bricks still it is red mud, concreate block – all mixture sand & blue metal – and as binding materials we have cement

[2:32 PM, 8/30/2018] +91 89396 97972: hence all materials have inherent property of expansion and contraction as like any other material

[2:32 PM, 8/30/2018] TecKXpert Working Committee: Dear All,
Pl join me in welcoming Mr. Prabhu, a Civil engineer with more than 27 years of very rich experience in the field, Presently associated with M/S Phoenix Limited as Vice President – Projects.

[2:32 PM, 8/30/2018] TecKXpert Working Committee: Welcome to TecKXpert group Chennai Mr. Prabhu

[2:32 PM, 8/30/2018] +91 89396 97972: If the building is constructed in a stable earth base then it will not crack

[2:33 PM, 8/30/2018] +91 89396 97972: if the building is constructed with good water curing during construction time then it will set well and it will long last atleast 15-20 years may be beyound

[2:35 PM, 8/30/2018] +91 89396 97972: Old buildings having cracks / leakages means we must get repair 1 or 2 times to reduce issues, still it may required a periodical maintenance to keep building from issues

[2:01 PM, 9/1/2018] +91 89396 97972: My views are 1) Concrete or any Roofing construction materials are having porus in nature, as simple method to create building with seepage free is to make with simple slope so that rain water won’t stay and run off

[2:02 PM, 9/1/2018] George Fernandes Acsendas Bangalore: That’s the biggest challenge we have a simple scrupper drain the contractor goofs up

[2:04 PM, 9/1/2018] Jayanthi Ma’am EE: This is applicable only on roofings and inside floor leakages or bathroom leakages… conceiled pipe leakages… we have to find alternate…

[2:04 PM, 9/1/2018] +91 89396 97972: 2) To create gentle slope in the roof, we must use light weight materials as filler ie like brick bats, light weight concrete etc

[2:05 PM, 9/1/2018] George Fernandes Acsendas Bangalore: Drain plan is a must else we have night mares

[2:06 PM, 9/1/2018] +91 89396 97972: 3) Additionally a roof finish can done with concrete times or brick tiles to have surface smooth and to make good runoff for rain waters

[2:06 PM, 9/1/2018] George Fernandes Acsendas Bangalore: Agree

[2:06 PM, 9/1/2018] Jayanthi Ma’am EE: Agree

[2:08 PM, 9/1/2018] +91 89396 97972: All above are basic construction methods followed without waterproofing,….

[2:08 PM, 9/1/2018] +91 89396 97972: Then why waterproofing methods are ? As we all are agreeing that construction materials porus, thus all chemicals, including tar used to fill the porus or making concrete dense so it won’t allow water not to perculate thru.

[2:15 PM, 9/1/2018] +91 89396 97972: 4) a number of chemical coat materials available in the market, those are used to be done both on roof surface and in the toilet floor – may be 2 coats

[2:16 PM, 9/1/2018] +91 89396 97972: 5) post applying coat after it get dry, must give simple protective plaster layer

[2:18 PM, 9/1/2018] +91 89396 97972: 6) Above protective layer we can create gentle slope in roof as well as in toilet for water run off and final finish with tiling

[2:21 PM, 9/1/2018] TecKXpert Working Committee: Ganesh Ram sir, If the proper basic construction methods are followed means, the question of water seepage will not arise. But not followed. That’s the problem. In few facilities I have seen heavy seepages during monsoon and suffered a lot to figure out a right solution to stop it.

[2:21 PM, 9/1/2018] +91 89396 97972: On External wall surfaces, plaster thickness would be 24mm, ie a double thickness compared to internal plaster, this is to protect building from all weather conditions, water sepage etc

[2:22 PM, 9/1/2018] +91 89396 97972: Yes exactly,

[2:23 PM, 9/1/2018] +91 98655 20542: How can we arrest the sepages in external walls

[2:24 PM, 9/1/2018] TecKXpert Working Committee: Sir, Why the external side wall gets crack. In few places I have seen wide cracks which is dangerous.

[2:25 PM, 9/1/2018] +91 89396 97972: Doing right construction methods as indicated above are important but post construction methods are always tideious and costly

[2:26 PM, 9/1/2018] TecKXpert Working Committee: Is this because of the curing not done properly or enough time is not given???

[2:27 PM, 9/1/2018] +91 89396 97972: There are multiple reason for this 1) Construction methods including right mix of Cement and sand, 2) Quality of materials 3) Improper curing 4) Wider cracks might be bcs of structural stability issues etc

[2:28 PM, 9/1/2018] +91 89396 97972: How to correct all this post construction means

[2:29 PM, 9/1/2018] TecKXpert Working Committee: As I have mentioned earlier I have seen few buildings in my home town almost 100 years old still looks very solid, strong and no seepage at all.

[2:29 PM, 9/1/2018] +91 89396 97972: We must repair the plaster and for wider cracks must consultant structural consultant for remady

[2:29 PM, 9/1/2018] TecKXpert Working Committee: Still I don’t understand what is going wrong in modern buildings.

[2:31 PM, 9/1/2018] +91 89396 97972: Yes possible to do even today, but we must give sufficient time, right materials and doing with proper methods

[2:35 PM, 9/1/2018] TecKXpert Working Committee: My question is why it is not followed. Building a Hugh facility something like a fast food, definitely one day it will create problem. All the FMs and Property managers are in hyper tension once agressive monsoon sets on every year.

[2:35 PM, 9/1/2018] +91 89396 97972: In the Most of building, developers/contractors, are making lot cost cutting to reduce budget and trying to complete at least time are major reasons to get inferior buildings

[2:36 PM, 9/1/2018] TecKXpert Working Committee: Sorry for my language. No intention to hurt anyone.

[2:42 PM, 9/1/2018] George Fernandes Acsendas Bangalore: Well that’s the fact every monsoon we get ready and prepare for the worst. But during the construction stage we can make all those changes and be a bit more cautious. But how do we turn around the situation in an operating facility.Woukd Request some basic tips which we can adopt or some indicators which while our visit can observe and take corrective action then to spend large amounts in waterproofing works etc

[2:43 PM, 9/1/2018] George Fernandes Acsendas Bangalore: In short how do we prepare or be ready for monsoon before the monsoon hits us. Some tips some suggestion some typical problems areas to look into would be a great input for all of us

[2:46 PM, 9/1/2018] TecKXpert Working Committee: Not only water proof, I do remember when I have visited your facility, you showed me some water seal compound which can be used to close all the cables entry holes.

[2:49 PM, 9/1/2018] Jayanthi Ma’am EE: Exactly. Even through this water seepage may be there

[2:54 PM, 9/1/2018] +91 93412 52912: I have come across Water seepage from concrete water sewage ducts at ground level/underground levels due to capillary action… These sort of concrete water ducts must be treated with anti seepage coatings

[2:15 PM, 9/1/2018] +91 89396 97972: 4) a number of chemical coat materials available in the market, those are used to be done both on roof surface and in the toilet floor – may be 2 coats

[2:16 PM, 9/1/2018] +91 89396 97972: 5) post applying coat after it get dry, must give simple protective plaster layer

[2:18 PM, 9/1/2018] +91 89396 97972: 6) Above protective layer we can create gentle slope in roof as well as in toilet for water run off and final finish with tiling

[2:21 PM, 9/1/2018] TecKXpert Working Committee: Ganesh Ram sir, If the proper basic construction methods are followed means, the question of water seepage will not arise. But not followed. That’s the problem. In few facilities I have seen heavy seepages during monsoon and suffered a lot to figure out a right solution to stop it.

[2:21 PM, 9/1/2018] +91 89396 97972: On External wall surfaces, plaster thickness would be 24mm, ie a double thickness compared to internal plaster, this is to protect building from all weather conditions, water sepage etc

[2:22 PM, 9/1/2018] +91 89396 97972: Yes exactly,

[2:23 PM, 9/1/2018] +91 98655 20542: How can we arrest the sepages in external walls

[2:24 PM, 9/1/2018] TecKXpert Working Committee: Sir, Why the external side wall gets crack. In few places I have seen wide cracks which is dangerous.

[2:25 PM, 9/1/2018] +91 89396 97972: Doing right construction methods as indicated above are important but post construction methods are always tideious and costly

[2:26 PM, 9/1/2018] TecKXpert Working Committee: Is this because of the curing not done properly or enough time is not given??? [2:27 PM, 9/1/2018] +91 89396 97972: There are multiple reason for this 1) Construction methods including right mix of Cement and sand, 2) Quality of materials 3) Improper curing 4) Wider cracks might be bcs of structural stability issues etc

[2:28 PM, 9/1/2018] +91 89396 97972: How to correct all this post construction means

[2:29 PM, 9/1/2018] TecKXpert Working Committee: As I have mentioned earlier I have seen few buildings in my home town almost 100 years old still looks very solid, strong and no seepage at all.

[2:29 PM, 9/1/2018] +91 89396 97972: We must repair the plaster and for wider cracks must consultant structural consultant for remady [2:29 PM, 9/1/2018] TecKXpert Working Committee: Still I don’t understand what is going wrong in modern buildings.

[2:31 PM, 9/1/2018] +91 89396 97972: Yes possible to do even today, but we must give sufficient time, right materials and doing with proper methods

[2:35 PM, 9/1/2018] TecKXpert Working Committee: My question is why it is not followed. Building a Hugh facility something like a fast food, definitely one day it will create problem. All the FMs and Property managers are in hyper tension once agressive monsoon sets on every year.

[2:35 PM, 9/1/2018] +91 89396 97972: In the Most of building, developers/contractors, are making lot cost cutting to reduce budget and trying to complete at least time are major reasons to get inferior buildings

[2:36 PM, 9/1/2018] TecKXpert Working Committee: Sorry for my language. No intention to hurt anyone.

[2:42 PM, 9/1/2018] George Fernandes Acsendas Bangalore: Well that’s the fact every monsoon we get ready and prepare for the worst. But during the construction stage we can make all those changes and be a bit more cautious. But how do we turn around the situation in an operating facility.Woukd Request some basic tips which we can adopt or some indicators which while our visit can observe and take corrective action then to spend large amounts in waterproofing works etc

[2:43 PM, 9/1/2018] George Fernandes Acsendas Bangalore: In short how do we prepare or be ready for monsoon before the monsoon hits us. Some tips some suggestion some typical problems areas to look into would be a great input for all of us

[2:46 PM, 9/1/2018] TecKXpert Working Committee: Not only water proof, I do remember when I have visited your facility, you showed me some water seal compound which can be used to close all the cables entry holes.

[2:49 PM, 9/1/2018] Jayanthi Ma’am EE: Exactly. Even through this water seepage may be there

[2:54 PM, 9/1/2018] +91 93412 52912: I have come across Water seepage from concrete water sewage ducts at ground level/underground levels due to capillary action… These sort of concrete water ducts must be treated with anti seepage coatings problem of water entry at basement due to increase in water table is very common and that is being managed with strong chemical grouting

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