@abdulwastecx. .....whats delaying the publication of the results?
What is the root cause of vertical cracks and what is the root cause of horizontal cracks? Professionals and builders on this thread, anyone care to enlighten us?

No knowledge is lost.

n3xt:


What are the probable cause of the crack?

I'm suspecting soil movement beneath the foundation. Upward pressure if the wall buckles. And I won't leave out the age of the building in the investigation.

When it's rushed and not well compacted, it'll definitely settle and crack is inevitable especially when built on wetlands.


Brabus

I slept off yesterday... Let me give you more hints

1. These cracks were experienced only on the first floor wall

2. This wall is a load bearing wall (carrying a roof load closer to the edge of the building.

3. This wall has no head beam connected to adjacent columns or pillars to help distributes load to the building frame (load to columns which is passed down to ground floor columns and subsequently to the foundation footings).

4. The building was a semi detached of two flats, these cracks were experienced in one of the balcony, there was am identical balcony in the other units without these cracks. So, we have to check the difference between method of construction of unit A to unit B. Unit A balcony wall rest on a slab beam and wall beneath and experienced no Cracks
Unit B balcony rest on a slab without beam and wall beneath (space below is a living room) and experienced the cracks highlighted above.

n3xt:


What are the probable cause of the crack?

I'm suspecting soil movement beneath the foundation. Upward pressure if the wall buckles. And I won't leave out the age of the building in the investigation.

When it's rushed and not well compacted, it'll definitely settle and crack is inevitable especially when built on wetlands.


Brabus

More features of the cracks : most of the vertical cracks originated from the top of walls and progressing downward.

Horizontal cracks occurs on both face of the wall.

Honey two wall were affected and these walls have two things in common, lacks of under underlying beam or wall and both carries roof load closer to the outside of the house

@ EgunMogaji are you a titled man in your villiage ? dont bring it to lagos . egunmojagj and EgunMogaji is same thing .after wasting that client cement and time you want to start convincing me with 3D pictures ? dont worry God is watching .

sensegiver:


[size=18pt]Me wey dem ban first 5 min ever on nairaland. nothing dey fear me again o[/size]

Oga we nor dey Ban here we dey fine here

EgunMogaji:
This was delivered as sharp sand.

Is it okay or should I use it as fill dirt? The color is throwing me off.

AZUH:
@ EgunMogaji are you a titled man in your villiage ? dont bring it to lagos . egunmojagj and EgunMogaji is same thing .after wasting that client cement and time you want to start convincing me with 3D pictures ? dont worry God is watching .

Strap him down, and tightly

beedam:



Ha! I hope this guy knows who he wan throw punch?

Where is ericko2K2 with his book? I know say e go see names write for here.

I dey angle 90 dey watch in 4.5

3strikes:
Sometime e good make person just sit and enjoy nairaland tori...

@Azuh u never get solution to ur house u dey call egun house a place of worship...

Una no go kill person here...make I go top my drink jare.

Lol I can't stop laughing Mr Azuh is quite funny..

AZUH:
@egunmojagi lol 3D indeed. GOD is aware and he is watching !!!

Azuh is a revelation on Nairaland

EgunMogaji:


Strap him down, and tightly

This guy is definitely over the edge. Abeg who get chain? I need 4 able bodied men

erico2k2:

This guy is definitely over the edge. Abeg who get chain? I need 4 able bodied men

Anambra state just opened a materisl testing laboratory, i hope its opened to everybody. Hope other states replicate this feet. https://www.nairaland.com/3118422/anambra-opens-material-testing-laboratories

@TLAX what revelation are you talking about ? When it was my turn @egunmogaji was not merciful at all . Now he is building a church what do you think ? I will keep quite? Nah

@ Erico2k2 I know you will support egunmogaji . He is your niccur right ? And you will always stand with him ? Don't worry that client will find his way to nairaland just like me !!

Na Azuh dey reign now on nairaland o.

If person dey get bad day all you have to do is get on nairaland. And you go start to dey laugh like person wey no well. I giggle a lot these days my wife don dey take one kain eye look me like say I no well.

AZUH:
@TLAX what revelation are you talking about ? When it was my turn @egunmogaji was not merciful at all . Now he is building a church what do you think ? I will keep quite? Nah

lol oga asun sorry Azuh which one be church again

Egunmogaji dey build Church
Laugh wan tia my belle o o o.

Azuh na 'aro' case I tell you

P291:
POP moulding plaster( ABS, JK..) + POP emulsion paint + bond for internal screeding while you can use ordinary cement + POP emulsion paint + bond for your external screeding.

For the mix, contact a screeder.

@P291 Thank you.

Weekend groove

We have a special assignment today Oga erico2k2 take note of those that won't submit to u.


Whats the Similarity between the two pictures below.

Pic 1: "agere" masquerade
Pic 2: Mr unknown pillers pillars

Duration: 10 mins.
Good luck

agarawu23:
Weekend groove

We have a special assignment today Oga erico2k2 take note of those that won't submit to u.


Whats the Similarity between the two pictures below.

Pic 1: "agere" masquerade
Pic 2: Mr unknown pillers pillars

Duration: 10 mins.
Good luck

One look stronger than the other

twinskenny:


One look stronger than the other

explain briefly sir!

---

Which out door lamp is good to hide a camera that no one will ever notice?

agarawu23:
Weekend groove

We have a special assignment today Oga erico2k2 take note of those that won't submit to u.


Whats the Similarity between the two pictures below.

Pic 1: "agere" masquerade
Pic 2: Mr unknown pillers pillars

Duration: 10 mins.
Good luck

Them two get k legs

loomer:


Them two get k legs

lmao one is bowleg

agarawu23:
explain briefly sir!

---

Which out door lamp is good to hide a camera that no one will ever notice?

there are lots of hidden camouflage cameras

abdulwastecx:


I slept off yesterday... Let me give you more hints

1. These cracks were experienced only on the first floor wall

2. This wall is a load bearing wall (carrying a roof load closer to the edge of the building.

3. This wall has no head beam connected to adjacent columns or pillars to help distributes load to the building frame (load to columns which is passed down to ground floor columns and subsequently to the foundation footings).

4. The building was a semi detached of two flats, these cracks were experienced in one of the balcony, there was am identical balcony in the other units without these cracks. So, we have to check the difference between method of construction of unit A to unit B. Unit A balcony wall rest on a slab beam and wall beneath and experienced no Cracks
Unit B balcony rest on a slab without beam and wall beneath (space below is a living room) and experienced the cracks highlighted above.

abdulwastecx lets get a clearer perspective of your structural analysis so that we can follow you:

The building started out as a two wing Bungalow and it's now a Duplex right?

If this is the case, how was the structural conversion and the delivery of the project. How was the foundation of the bungalow transformed or improved to spread the load of the duplex? It may be the case that a section of the building still bears the structural hallmark of the bungalow foundation and other sections of the foundation were re-enforced to accommodate the duplex. A classical case of non-coherent structural stability flow. If a section of the building is "all round chained" like you've observed and other congruential sections are not, don't you think there is the risk of differential settlement which may explain partly the vertical cracks?

And for the horizontal crack, you've talk about the roof; that the roof may be exerting pressure on a section of the building with load bearing walls not all round chained evidencing the crack, but the other congruential section is properly chained with no problem. So it's evident that the building is not spreading the roof load evenly.....again non-coherent structural stability flow?

I've seen this happen again and again in the trade and often here on Nairaland. We over re-enforce a section of our project by building columns here and there without the re-enforcement transmitting to other sections of the building to eventually evenly distribute any resulting load, so it stands to reason that if you exert pressure on such structure, a section will hold better than other sections leading to cracks or worse collapse.

Let us know your final outcome. Well done.

AZUH:
@ Erico2k2 I know you will support egunmogaji . He is your niccur right ? And you will always stand with him ? Don't worry that client will find his way to nairaland just like me !!

Young Man 5hat is his house no client would be looking for him lol

agarawu23:
Weekend groove

We have a special assignment today Oga erico2k2 take note of those that won't submit to u.


Whats the Similarity between the two pictures below.

Pic 1: "agere" masquerade
Pic 2: Mr unknown pillers pillars

Duration: 10 mins.
Good luck

I dey wait my oga at the top

@agarawu . Ehen you get mind sha .they used three blocks for my foundation . I want to do landscaping can I bring one block n half up and 11/2 dawn ? Just asking ! It was supposed to be two dawn and one up but the house is very close to road .

Okay. The test was conducted for the sole purpose to see how fine aggregate as do coarse aggregate influence the desired strength of concrete. For this purpose, two tests were conducted with one using granite dust as fine aggregate & the other using the popular laterite (sharp sand). You see, before now, there have always been mixed reactions concerning this granite dust but, the below results nipped it in the bud. Now, my findings:

1. The granite dust gave a blending color to the mix as oppose to sharp sand.
2. The granite dust proves very difficult to bond with the mix ( I used trowel for both experiments & I'm certain it is same even with an automated mixer)
3. The desired strength was 25N/mm² but, sharp sand gave me 26N/mm² while granite dust gave 16N/mm²
4. For some reason, I believe the workability of sharp sand is better than granite dust.

Since it was a time limited experiment, I couldn't make a general conclusion but, however, the strength is what really left me dazed.
N:B ==> A mix of 1: 3/2 : 3 ( 4: 6: 12) was used which I believe does not have any detrimental effect on the suppose granite dust. It's just a mix, afterall.

I made the summary as short as I could.


Cc: Abdulwastecx, Egunmogaji , n3xt

AZUH:
Nigerians !!! If you still take all these men to the site without being there . They will do same thing . We'll it's my property and I think I have getting what I need . I will contact who I need to contact at the right time . God bless everyone . Na dpc carry me waka come . I hope lastma doesn't arrest me today . This head is not stable at all . They don't know the pain . Uwa

You gave us clue, we just didn't see it

diordaves:


abdulwastecx lets get a clearer perspective of your structural analysis so that we can follow you:

The building started out as a two wing Bungalow and it's now a Duplex right?

If this is the case, how was the structural conversion and the delivery of the project. How was the foundation of the bungalow transformed or improved to spread the load of the duplex? It may be the case that a section of the building still bears the structural hallmark of the bungalow foundation and other sections of the foundation were re-enforced to accommodate the duplex. A classical case of non-coherent structural stability flow. If a section of the building is "all round chained" like you've observed and other congruential sections are not, don't you think there is the risk of differential settlement which may explain partly the vertical cracks?

And for the horizontal crack, you've talk about the roof; that the roof may be exerting pressure on a section of the building with load bearing walls not all round chained evidencing the crack, but the other congruential section is properly chained with no problem. So it's evident that the building is not spreading the roof load evenly.....again non-coherent structural stability flow?

I've seen this happen again and again in the trade and often here on Nairaland. We over re-enforce a section of our project by building columns here and there without the re-enforcement transmitting to other sections of the building to eventually evenly distribute any resulting load, so it stands to reason that if you exert pressure on such structure, a section will hold better than other sections leading to cracks or worse collapse.

Let us know your final outcome. Well done.

No the building didn't start as a Bungalow, it was actually built as a duplex.