smiley001:
How is podosci doing bro?

Doing great

I am fine boss..

Filling:

Waste pipe plumbing work

abdulwastecx:


Another problem is settlement, most filled experience settlement after sometimes due to poor compaction. The higher the filled the more likely to settle

True talk. I find that the arrangement of my interlocking stones are now disintegrating because after 15 months of installation, the compacted underlying sand in now settling.

By the way, Abdulwastecx, is the depth of that foundation because the soil structure is good? OK have seen a couple of builders here with same "not too deep" foundation even in areas like ajah etc.

PeoplesArmy:


True talk. I find that the arrangement of my interlocking stones are now disintegrating because after 15 months of installation, the compacted underlying sand in now settling.

By the way, Abdulwastecx, is the depth of that foundation because the soil structure is good? OK have seen a couple of builders here with same "not too deep" foundation even in areas like ajah etc.

Compaction is very important for interlocks. It must be done in layers for a deep fill and with the help of a roller.

This foundation will be thoroughly compacted by adding water to the filled and manually Compacting with an iron rammer

PeoplesArmy:


True talk. I find that the arrangement of my interlocking stones are now disintegrating because after 15 months of installation, the compacted underlying sand in now settling.

By the way, Abdulwastecx, is the depth of that foundation because the soil structure is good? OK have seen a couple of builders here with same "not too deep" foundation even in areas like ajah etc.

Depth of foundation depends on a lot of things like soil type, water level, height above road level etc. I think this is the most economical considering integrity of the structures for the house

abdulwastecx:


You know it will not be polite to do share someone building plan. I can produce similar one for you at reasonable cost.

The projected cost of the project will vary greatly if this house is built I the east or west because so any variable like cost of materials.
Here 30tonne of gravel is 65k, similar gravel will cost me 165k in anambra and about 200k in Port Harcourt.

Digging of the foundation was done for 20k, it will cost up to 45 to 50k in the east.

In summary, this building will cost between 4-6million to achieve what I have on the three dimensional drawings.
1.long span aluminum roofing sheet
2 . sliding Windows,
3. Tiles of around N1200/square meters
4. Pop ceiling for living room and dining, and pvc ceiling for other rooms.
5.polyatyrene fascia
6.interlocked compound

My engineer.... ride on jare...

I am handling a similar project (3 bedroom flat) in umuahia. The cost of gravel scared my client (about 120k) that I decided to use local stone (also know as maggi) @ 34k per trip to save cost for him...

Digging in umuahia is not costly I must say depending on how soft or hard the land is... here, they dig by partitions....one partition(i.e 12ft =3.6m) costs #800 (sloppy ground though) at 600mm depth...
In fact, I used about #18k for digging my foundation (263.4ft/12ft = 22 partitions * #800 = #17,600)....


I will update my work here when the time comes. Meanwhile, keep leading and I will be following...lol

Cool

Compaction of filled to achieve a very rigid foundation.
The compaction was done by water g the foundation for ten hours after which a very heavy manually made rammer is used to compact the foundation to the required level

More updates from the foundation

Dpc formworl.
Type of wood use: 1 x 12 soft wood (apu plank) of 17pieces

Nail, and other Miscellaneous

One carpenter and one labor

More updates

Casting of dpc.
The dpc is 5'' thick at maximum and 3'' minimum. The mix ratio is 1.3.6

Summary of materials used
45bags of cemented
1 trip of 30tonnes aand

Thanks for sharing, very very useful information.

More dpc photos

abdulwastecx:
Casting of dpc. The dpc is 5'' thick at maximum and 3'' minimum. The mix ratio is 1.3.6
Summary of materials used 45bags of cemented 1 trip of 30tonnes aand

Pls wat is a formwork ? & can we say dpc is part of a foundation even though is kind of a floor ?
Forgive my ignorance.
GGMUB bro.

Nice job# kudos

abdulwastecx:
Casting of dpc.
The dpc is 5'' thick at maximum and 3'' minimum. The mix ratio is 1.3.6

Summary of materials used
45bags of cemented
1 trip of 30tonnes aand

Miscellaneous:


Pls wat is a formwork ?
& can we say dpc is part of a foundation even though is kind of a floor ?

Forgive my ignorance.

GGMUB bro.

Formwork is a is a platform use to enclose concrete in a civil engineering/building construction. it is a temporary structure that serve the above listed purpose a d it is removed (striking) after the concrete as set.

For this foundation, the Formwork is that wood that is nailed to the edges round to get a reasonable height, level and to hold back the concrete.

Dpc is an oversite concrete that is part of foundation but place at an height above ground level.

Abdulwastecx, I didn't notice any sign of reinforcements used esp. with regards to columns. I've heard of columns not being necessary in bungalows and load bearing walls (1 storey) buildings, but I've not really come to understand the reasons why. Could you please explain why.

abdulwastecx:
More dpc photos

I notice that you did not use rods to reinforcethe dpc before casting. In another thread you had said that this was necessary. https://www.nairaland.com/2762704/construction-3bedroom-bungalow-somewhere-ajah/1

What is the fine difference before the two foundations and reason for deciding not to use rods in this one?

Onuokwu:


I notice that you did not use rods to reinforcethe dpc before casting. In another thread you had said that this was necessary. https://www.nairaland.com/2762704/construction-3bedroom-bungalow-somewhere-ajah/1

What is the fine difference before the two foundations and reason for deciding not to use rods in this one?

That thread, if memory serves me well the builder specifically States that he is building a 'raft foundation'.
The use of iron mesh is important, it add more assurance and protect the foundation when not properly compacted.

We decided not to use iron mesh or y8 for variety of reasons like
1. The fill is low and fully compacted.
2. The building area is relatively small
3. The mass concrete will do just fine without mesh or light reinforcement

karleone:
Abdulwastecx, I didn't notice any sign of reinforcements used esp. with regards to columns. I've heard of columns not being necessary in bungalows and load bearing walls (1 storey) buildings, but I've not really come to understand the reasons why. Could you please explain why.

Ok sir.
I have made it a policy to build all my structures ( either bungalow or duplex) as frames structure ( building where there are columns and such columns carries all the load rendering the wall to be just partition wall) since most of the house we have been constructing are in the east or south South, where the soil is relatively soft.

For this particular project on a relatively good terrain (suleja, niger state) and couple with the client limited budget we decided to use load bearing block wall. The block use was machine vibrated stone dust block with reasonable strength. That is the reason why we use 9''block throughout this bungalow.

My oga why did you use dpc specifically?

EgunMogaji:
My oga why did you use dpc specifically?

Because I want to achieve something reasonable
1.i want to have a uniform level on which my super structure will be built
2. I want to prevent moisture rising through the foundation
3. I want to have good platform on which floor rendering an tiling work will rest on

abdulwastecx:


Because I want to achieve something reasonable
1.i want to have a uniform level on which my super structure will be built
2. I want to prevent moisture rising through the foundation
3. I want to have good platform on which floor rendering an tiling work will rest on

I might have misused the acronym dpc.

I meant the black plastic covering.

EgunMogaji:


I might have misused the acronym dpc.

I meant the black plastic covering.

That should be DPM (damp proof membrane). It is use to prevent moisture rising through the foundation

EgunMogaji:


I might have misused the acronym dpc.

I meant the black plastic covering.

That should be DPM (damp proof membrane). It is use to prevent moisture rising through the foundation

abdulwastecx:


That should be DPM (damp proof membrane). It is use to prevent from rising through the foundation

Do you use it on all your foundations or there is something specific about this lot that was of concern?

Thanks.

PS: ultimately, m trying to decide if I need to do same.

abdulwastecx:


Ok sir.
I have made it a policy to build all my structures ( either bungalow or duplex) as frames structure ( building where there are columns and such columns carries all the load rendering the wall to be just partition wall) since most of the house we have been constructing are in the east or south South, where the soil is relatively soft.

For this particular project on a relatively good terrain (suleja, niger state) and couple with the client limited budget we decided to use load bearing block wall. The block use was machine vibrated stone dust block with reasonable strength. That is the reason why we use 9''block throughout this bungalow.

Oh! I see! That's so lovely to hear.
From a book I read, Elements of Reinforced Concrete design (can't remember the name very well), Engr. V. Oyenuga made some statements about using load bearing walls. One of them is, It must be machine made and each bag of cement should yield a maximum of 25 blocks (though I know it shouldn't just be 25 but should be within that number to obtain a good strength). He also talked about the Bearing Capacity of the soil ranging from 150Kn/m^2 ~ 200Kn/m^2; and from your explanation above, it's like the soil BC met the requirement. Now, what quantity of the Machine vibrated stone dust blocks are formed from a bag?
Are your blocks made on site under your supervision so that the desired strength/number per bag would be achieved or they are made away from site? Because, I know most of these block industry guys are always after their pockets, not considering the required strength to be achieved.

Sorry if my questions are annoying. I'm just a learner trying to building my CE experience.

EgunMogaji:


Do you use it on all your foundations or there is something specific about this lot that was of concern?

Thanks.

PS: ultimately, m trying to decide if I need to do same.

I use it in all my work sir because it help prevent a lot of future wall pilliing and it is cheap. It cost me like 10k to get all all the plastic for this project

abdulwastecx:


I use it in all my work sir because it help prevent a lot of future wall pilliing and it is cheap. It cost me like 10k to get all all the plastic for this project

Thank you sir.