Happy Sunday!

Morning!

Hello Segcy.moor

I just came across you thread yesterday and i must commend you on what you are doing, its a fine work.However let me point something out. The foundation you adopted for this project is inverted raft foundation with the raft slab on top. My concern is that why did you use hardcore after sand-filling, considering the fact that your raft slab is reinforced See pics below;
The presence of the hardcore makes your raft slab uniform (i.e its thickness). For example, if your structural engineer designed the raft slab to be 150mm thick, the presence of hardcore would not let you achieve such uniform thickness throughout the slab, this off course has its structural implications.
Secondly, since you are reinforcing the raft slab, you could avoid spending money on filling with laterite, because you raft beams would safely carry the slab without any issues. The only problem with this is that you might not be able to recover your formwork. Nice work though. Your work is very professional.

p.s: Please I'm not trying to criticize your design/method in a anyway. I believe this forum is a platform for us to share ideas and learn from each other. I await your response.

Good job Segun, my only observation was that your foundation @ the DPC level does not include hardcore which may likely result to crack in the ground floor flab. Except if the foundation thickness is adequate enough.
Secondly, you work without consciousness for safety for you and your workers which is not a professional ethics. All the same a job well done as in the frame structure.

You can contact me for your structural design and professional input in your next project as no man is an island of knowledge.

Contact: Handex Engineering Ltd.
Mobile: 08035831232
E-mail: handexengltd@yahoo.com


[quote author=yong_noble]Hello Segcy.moor

I just came across you thread yesterday and i must commend you on what you are doing, its a fine work.However let me point something out. The foundation you adopted for this project is inverted raft foundation with the raft slab on top. My concern is that why did you use hardcore after sand-filling, considering the fact that your raft slab is reinforced See pics below;
The presence of the hardcore makes your raft slab uniform (i.e its thickness). For example, if your structural engineer designed the raft slab to be 150mm thick, the presence of hardcore would not let you achieve such uniform thickness throughout the slab, this off course has its structural implications.
Secondly, since you are reinforcing the raft slab, you could avoid spending money on filling with laterite, because you raft beams would safely carry the slab without any issues. The only problem with this is that you might not be able to recover your formwork. Nice work though. Your work is very professional.

p.s: Please I'm not trying to criticize your design/method in a anyway. I believe this forum is a platform for us to share ideas and learn from each other. I await your response


....Good observation, in the first I refer u to critics in my other project just rounded up. Unlike u, the guy ask why I did nt use hardcore(there, I used only reinforecement but no hardcore) However,if you observe the level of casting of d Ground beam, u will see those concrete caster did nt cast to acceptable level, some place ve 300mm above d concrete and according to Structural details, we may cast within 150mm to 200mm. I need to pity the client hence use Hardcore to make up but that doest reduce slab thickness. Bros, I tell u, I ve never spent money like this on foudation(13m) we use pure imported iron throughout even in d suspended slab. 2 trailers(1200) of cements for foundation alone.
Also, u made mention of why neccessity for filling. With due respect I must educate you. This is only acceptable in Pilling or Cellular foundation. However, filling even strenghting raft.....I stand to be corrected.
All the same, thanks for ur compliment!

segcy.moor:
However,if you observe the level of casting of d Ground beam, u will see those concrete caster did nt cast to acceptable level, some place ve 300mm above d concrete and according to Structural details, we may cast within 150mm to 200mm. I need to pity the client hence use Hardcore to make up but that doest reduce slab thickness.

Makes sense.

I'm presently working on a project right now, we have spent roughly N30m on the foundation and we haven't reached the DPC yet! Its raft foundation similar to your only that its inverted (ie, the raft slab on the ground and the ground beams are 2.0m deep). Probably i might open a thread for it soon.

Once again you are doing a GOOD JOB, and I and many other NLanders have learnt a thing or two. Keep up the good work.

30m on raft and not even pilling. whao! that must be massive building.

30m on raft and not even pilling. whao! that must be massive building. I cant wait to see d foundation

yeah, we were suppose to pile actually, but the cost of pilling alone was 32m (without the tie beams and pile cap). its actually a 6-storey hotel with a penthouse floor. The raft slab is 350mm thick while the ground beams are 2.0m deep. We've used more than 4,000 bags of cement and still counting.....
I will definately startup a thread as soon as we get off the foundation, we are already 90% done. Thanks

yong_noble: yeah, we were suppose to pile actually, but the cost of pilling alone was 32m (without the tie beams and pile cap). its actually a 6-storey hotel with a penthouse floor. The raft slab is 350mm thick while the ground beams are 2.0m deep. We've used more than 4,000 bags of cement and still counting.....
I will definately startup a thread as soon as we get off the foundation, we are already 90% done. Thanks

It will also be interesting to see how that foundation that costs that much is done..
Yes, please start a thread and show us everything in details. Thank you.

Hajji Mufutau

Work update tom

weldone my Oga...

twinskenny: weldone my Oga...

twinskenny: weldone my Oga...

pls send ur comprehensive profile to dis mail---tunde02@hotmail.com----u might be fortunate

Thank you very much i will do that right away

Plaster of paris

Fhemmmy: Looking so good

..thanks

men at work

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!!

happy sunday

tlops: happy sunday

Happy Monday

work in progress

Hi all.

Did anybody has an idea how much it will cost to fence round a plot of land in in awoyaya lagios.The land size is 60 /120. (Normal 1 plot size)

l need the quote for both half and full feet in height.

Thanks

snappers: Hi all.

Did anybody has an idea how much it will cost to fence round a plot of land in in awoyaya lagios.The land size is 60 /120. (Normal 1 plot size)

l need the quote for both half and full feet in height.

Thanks

Please contact us For ur sand filling|SharpSand,plastering Sand,Laterite &Granite|Truck management|07064696356|fendorf2003@yahoo.com

work in progress!

!

Work update tom

ok, we are waiting sir.

oladele007: ok, we are waiting sir.

call me for ur granite supply 07064696356 fendorf2003@yahoo.com

oladele007: ok, we are waiting sir.

ok