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Opalu's Posts

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Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 2:18pm On Oct 11, 2015
johnson232:
Happy sunday to u sir. Pls which do recommend between elephant and dangotee cement. Which is more suitable for concrete and block moulding?
Thanks Sir.
There has been a war between the two. And since it took a political dimension I decided not to put myself to support anybody the two but to use both for my projects.

Let me explain. We Dangote used political influence to import greatest portion of cement into the country yeats back, Dangote Cement was good. When the Dangote Obajana Cement was opened in Kogi to service Abuja and other northern states, we discovered that 'Dangote Lagos' that was imported was far better than 'Dangote Abjua'. I was heading the construction of 30 Luxury mansions in Wuye Abuja at the time and we tested dangote and Elephant (Lafarge).
To our surprise Danote failed in all. So we used Elephant in all that project.
So in order to correct the anomalies which I think they noticed from different feedbacks, the Dangote company upgraded their cement everywhere to a quick-setting-time Cement that is slightly better than Elephant product. This cost them real money.
They then decided to use SON to force other cement companies to upgrade to it.
Check this link:
http://www.punchng.com/special-feature/dangote-lafarge-battle-for-cement-market-dominance/

So I use Dangote 42.5 grade and also use Elephant of any grade.
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 1:56pm On Oct 11, 2015
johnson232:
You are good...
Thanks bro. Na God win.
Politics › Re: Diepreye Alamesiyhga Died Of Cardiac Arrest .. channels TV by opalu: 6:03pm On Oct 10, 2015
He may later come out and dispel the rumour
Celebrities › Re: Helen Paul And Gordons: Ay Carries Helen Paul Off The Stage by opalu: 5:20pm On Oct 10, 2015
They all yab themselves na. They even yab 2face. If na so 2face dey Do all of them for be guilty
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 5:14pm On Oct 10, 2015
johnson232:
Thanks a lot sir. If that is the case, isn't it more better to cast concrete with the smallest size of granite(chippings)?
No. Different sizes of granite is the best. on many occasions I have experimented and have proved that well graded is the strongest and the best for concrete.
How did I do this? I took small sized granite for sample 1, then took big sized granite for sample 2 and took different sizes for sample 3. Then cast the three concrete mixes separately using the same cement and sand. Three different set of standard cubes were made. After 21 days and 28 days, these cubes were taken to be crushed in a concrete laboratory. The results showed that the well-graded Sample was the strongest because it took longest before it crushed.
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 1:53pm On Oct 10, 2015
johnson232:
Sorry I answered wrongly, I meant 1 bag of cement to 8 headpans of sand and 8 headpans of granite.
8 headpans for sharpsand is too much. Reduce it to 4 if the granite is well graded meaning it has different sizes of granite in the trip. If it's only big sized granites you could get, then increase the sharp sand to 5 or 6.

Reason being that when the size of granite are the big, there is tendency for voids to be created between them. Hence those spaces weaken the concrete even if sand fills the voids. when there are different sizes (I don't mean shapes) of granite, theN during casting and vibra-tion, ththe smaller sizes will find their ways into the voids between the bigger ones
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 12:41pm On Oct 10, 2015
Cypost:
@opalu
Please what are the advantages or
disadvantages of using 6' block after the decking for a storey building.

Secondly, what will be ideal for pillars after the decking 16mm or 12mm

The structure is in a waterlogged area with pile foundation so we are thinking of measures to reduce dead weight as much as possible
The weight of the building must not necessarily be lighter. There are instances whereby the structure must be made heavy in order for stability to occur. There are other instances whereby weight must be reduced not to overload the foundation. That is why a competent structural engineer is required for any structural issues. Just as you need a medical professional for medical issues.

Now to your question on 6 inches block, gorgeous simple storey building, you could use them for partition walls where you won't require a 9 inches column (225x225mm) or else the columns will shoot out and that is ugly. But it is advisable to use 9 inches blocks for the external walls at the upper 1st floor to reduce weight on the suspended slab (decking).

On the reinforcement in columns for upper floor, the minimum reinforcement is 4Y16 Even for the highest floor. However in the real estate sector majority of builders use 4Y12 for upper floors simply because to them those columns are only carry Roof load.
But I hate that practice because 1st the cost difference is always negligible (except it's a gigantic project). Secondly there are instances that in future undue extra loads could be placed up and 4Y12 in columns will not work.

Real life experience: Early this year, a foreigner gave someone money to build a house for him in Lekki. The man used 4Y12 at all the columns on the upper floor. He even omitted some because to him nothing was up above it. Surprisingly a decision was made to add pent floor. They did that without structural advice.
when massive cracks started, I was called to solve it.
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 11:26am On Oct 10, 2015
johnson232:
Yes sir.
Ok. In that case 1 bag to 4 headpans of sharp sand to 4 headpans of granite Means 1:2:2 mix ratio.
THIS RATIO IS VERY ADEQUATE.
But you must know that is will be stronger than standard concrete Which is 1 bag to 4 headpans Sand and 8 headpans of well graded granite
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 2:07pm On Oct 09, 2015
Do you mean 1 bag to 4 headpans each of sand and granite?
johnson232:
U're bless sir,I'm grateful... I have decided to settle for a mix ratio of 1:4:4 for all the concrete works, both for columns and lintels. Hope that is okay?
Politics › Re: APC Senator Sacked by opalu: 1:34pm On Oct 09, 2015
Whathuh? AttaIdoko againhuh?
Politics › Re: Miniterial List: A Brief Profile Of Dr Ogbonnaya Onu -by Woko Eze Icon by opalu: 7:27am On Oct 09, 2015
This is one of the very few Igbos I can campaign and vote for as President.
He will perform excellently in any ministry he is given as Minister. QUOTE ME ANYWHERE.
Politics › Re: Amaechi Et Al And The Landmines In The Chamber by opalu: 7:21am On Oct 09, 2015
Great advice. I hope they heed it.
Politics › Re: Chevening Scholarship Removes Diezani From Honours List by opalu: 6:49am On Oct 09, 2015
This is shameful
Politics › Re: Oyinlola, Akeredolu, Others Allegedly Make It Into Buhari’s 2nd Ministerial List by opalu: 9:21pm On Oct 08, 2015
Dnt know why you people like speculation. Later you say Buhari kept you guessing for many months only to bring non-saints
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 12:52pm On Oct 07, 2015
johnson232:
God bless u sir... And my bricklayer was saying otherwise. Now I know it is always better to entrust one's project to professionals. Please what size of pillar do u suggest I use for my entrance porch? It is a 6inches block wall bungalow. My bricklayer is proposing 225mm x225mm Thanks.
The size of pillar for me trance porch 225x225 is adequate For simple 1 or 2 storey building. After the casting, at finishes stage, someone that designs mortar POP can do a mortar design round it for it to look thicker like round dia of 400mm or 500mm.
Politics › Re: LIVE ON NTA: Senate Kicks Against Petition Submitted Against Rotimi Amaechi by opalu: 12:24pm On Oct 07, 2015
Amaechi was Buhari s campaign director. That was why his name was forwarded. He plotted a historic campaign strategy that saw the sacking of a Sitting president.
Give it to the Rt Hon
Business › Re: How To Place Your Ad On Nairaland Step-by-step by opalu: 5:27pm On Oct 05, 2015
I wanted to chat you up on whatsapp so you could do a graphic design for me to do NL advert. But you weren't on WhatsApp
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 4:44pm On Oct 05, 2015
johnson232:
should I stop my pillars at lintel level, since I'm not using parapet or head beam? Or I should extend it above the lintel to the building height? Thanks.
Okay. I didn't see this question.
Columns (pillars) are not to terminate at the lintel for any reason.
The concept is for the roof loading to be transferred unto the roof beams then all the pillars at that floor stop inside the roof beam to transmit the loads down.

But some people don't do roof beams to tie the whole of the pillars before they put roof wood carcass.
The roof beam is just like a lintel that is on top of the block wall before the roofing. The usefulness is that where you have the "parapet" it comes out of the roof beam. Where it's just roofing alone, the quater rods that bind the Wall plates for the Roof are embedded inside the reinforcement of the concrete roof beam.

So in general, it's best to take the pillars to the end of the block wall and also to cap it all with a concrete roof beam at least the external walls where the roof will sit on To be able to anchor the Wall plates properly against wind forces.
Politics › Re: Why Do Nairaland Mods Do This? by opalu: 9:33am On Oct 05, 2015
egift:
With N1,000 he can start advertising on Nairaland. Soon he will be depositing 30k or more for Nairaland Ads. All he needs is ensure he is promoting what people need.
Waoo. That's an eye opener. The poster also complained of complexity. Is that true? because I wanna also do advert soon
Politics › Re: Why Do Nairaland Mods Do This? by opalu: 7:00am On Oct 05, 2015
I think the Poster is making a valid case for business people not as rich as you are.

egift:
Op if you have something to sell, Get A Nairaland Banner Ad.
Have you ever seen any advert on my post? But I advertise all the time on NL (did you see the 3 banners at the top and below the page). If NL allow what you are proposing, this Forum will be littered with junks and scammers.
Politics › Re: My Take On Prince Audu Of Kogi Returning N11 Billion - Cramjones by opalu: 3:33am On Oct 05, 2015
Terrible
Family › Re: Ask Any Question On Family & Relationship Issues by opalu(op): 6:49pm On Oct 04, 2015
Okay.
please repost your question on building issues at Property page and I will tackle it right away.
Maybe I didn't see the earlier post.
johnson232:
Sir u're indeed a genius, your effective solutions are not limited to structures alone, but also covers family life. I'm impressed...
But sir u didn't do justice to my last question on ur structure thread. Awaiting ur response...
Family › Ask Any Question On Family & Relationship Issues by opalu(op): 6:00am On Oct 04, 2015
One of the greatest warfare that satan wages on earth is against the family. The family is the building block for the society and the Nation. Why does satan dispatch so much efforts in attacking the family to this extent? The answer is not far-fetched. FAMILY is the miniature heaven. The home is a small-sized heaven to give us a foretaste of how the eternal destination will be while here on earth.
Every living thing becomes independent of their 'parents' soon after being given birth to. The birds, animals, plants etc. But for mankind, it takes as much as 2 decades of being dependent on the parents for proper relationship, training and upbringing within the family.
on the other hand, the marriage is the first institution set up by God to act as the Nucleus for the family. The family is like the Egg while the Marriage is the Yoke.

This thread is where your questions relating to marriage and relationships and family will be answered
Politics › Re: Idris Wada Holding His Governorship Certificate Upside Down by opalu: 3:46pm On Oct 02, 2015
Terrible
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 7:32am On Sep 28, 2015
The quality of materials used and the best practices with which are used to build structures determine how long the building will last before requiring structural upgrade.

Everything living and nonliving things have lifespans and expiry dates

Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 10:15pm On Sep 27, 2015
happy sallah to you all.
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 1:23am On Sep 23, 2015
babaeko1:
Opalu

How you dey.

I have a question for you, who is better placed to cast a paraphet, a Bricklayer or caster ? Any advantages/disadvantages to using either of them ?

Also if one does blockwork and paraphet, any risk with leaving it for a few months before roofing ?
With a fence which has 2 coash of raft work, any risk with leaving the fence without coping for some time ? I mean any problems with not doing coping yet and rains etc ?

Thanks.
A Bricklayer/Mason is the best person to cast anything After the carpenter has done the formwork.
Even when you give casting to a caster he must engage a bricklayer/Mason to be at the point that the labourers are pouring the wet concrete if not it will be rubbish wOrk
Business › Re: Foreign Investors Withdraw N410bn From Stock Market -PUNCH by opalu: 8:24am On Sep 22, 2015
Don't give up Nigeria must prosper
Politics › Re: Top Politicians Woo Senators With $50,000 Each To Impeach Saraki - Daily Indept. by opalu: 8:17am On Sep 22, 2015
chukwudi44:
Lolz virtually half of the senators are billionaires and former Governors and you think you can entice them with money? Is it Andy uba you will give that money abi na Godswill Akpabio,David Mark,Dino Melaye etc? What is $50,000 to these men?
human wants are insatiable. ... so expect anything
Properties › Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu(op): 9:11am On Sep 21, 2015
Happy new week
Properties › Re: Bathroom And Floor Finishing by opalu: 6:46am On Sep 21, 2015
Ok

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