₦airaland Forum

SIR BANYE: I am a civil engineer, in my years of practise, i ve never heard or seen anyone use pile foundation for a single storey building. No matter how bad the soil is, raft is best recommended. I always advice clients building in very swampy area that are not too sure of the soil bearing capacity to the soil replacement. Soil replacement is done by replacing the top soil of your land with solid sharp sand to a depth of about 2m, depending on how poor your soil is. Upon doing soil replacement, a proper compaction must be done. After which you can use a properly reinforced raft of about 1m for your foundation. Soil replacement is the guaranteed way to improve your soil irrespective of how poor it is. This way i can guarantee you of a stable structure free from sinking or foundation tear. You can contact me on udoka.banye@yahoo.com for further advice

We all learn every day. However for you †̥☺ say that since you have never done, heard or seen a pile foundation for 1 storey building means it can't be done or not being done means you don't want †̥☺ open up for new ideas.
I have done a comprehensive analysis fo r a particular site comparing the cost of piling †̥☺ that of soil replacement. I discovered that the cost of replacing the soil plus thick raft was higher than piles of 450mm dia which were required. The earth behaves funny and I've seen where replaced soil settled considerable †̥☺ make the building unfit for usage and marked for demolition. I still use the method if it is the best and most economical for that particular site!

richeyy: Thank you! I was beginning to wonder what a geologist has got to do with investigating ground conditions for foundation design

ubeji: but u still need Structural Engineer for the interpretation of the foundation.It is not geologist that do soil test it is Geothecnical /Foundation Engineer that does it.

Geologists are specialists when it comes †̥☺ soil, rocks, etc. Most Civil Engineering students run borrowed courses fø̲̣̣я̅ some semesters called 'Engineering Geology'. Carrying out Soil test and Analysis and preparing the reports can be done by Geologists (atleast they study those things!).

Civil Engineers who specialize as Geotechnical Engineers though can also do soil tests but they focus more on Heavy groundbreaking constructions like dams, tunnels, bridge foundations etc. Atleast those I know.

[quote author=segcy.moor]@fadelex. With due respect I totally disagree with you that the Guy that quote for pile (for a story building is a quack)
Damn! Have you being to arowojobe estate at Maryland. I tell you I did a project over their and the building is tilted even before lintel. I am talking about just bungalow. This happened just because the idiot that did piling we adopted didn't get to required depth. Virtually all the pilling on that environment failed because it didn't handle by competent hand.
.......u can't conclude that pilling is meant for high rise without due consideration for the nature of the land in question[/quote]Thanks and God bless U̶̲̥̅̊ fø̲̣̣я̅ this response. There is a site at Anthony, Lagos that you as a human being will sink on Ūя̲̅ own weight till knee or waist level. With just a blow, a precast pile will sink in totally till it reaches good soil. Same with another site in Mende Meryland. Not †̥☺ talk of a whole 1 storey building!

Fadelex: the engineer that quoted for pile foundation for a storey building is definitely a quack.... unless you are building an island in a river, Pile foundations are long, slender, columnar elements in a foundation that are installed into the ground.
They aretypically made from steel or reinforced concrete and possibly timber . A foundation is described as piled when its depth is more than three times its breadth.
Pile foundations are principally used to transfer the loads
from a superstructure, through weak, compressible strata
or water onto stronger, more compact, less compressible
and stiffer soil or rock at depth, increasing the effective size of a foundation and resisting horizontal loads

raft foundation is suitable for d design

Let me explain briefly why a structural Engr shld be d one †̥☺ select a Geologist †̥☺ do soil test.
The report a Geologist produces is best understood by d Civil Engineer. Fø̲̣̣я̅ same reason a Doctor understands and uses the results from Lab technologist.

If U̶̲̥̅̊ meet someone by yourself, by the way U̶̲̥̅̊ talk, they know U̶̲̥̅̊ are a layman †̥☺ d field so they may send an unschooled but skilled guy †̥☺ do the test on site then copy and paste report of previous test carried out and submit †̥☺ you. But with a Civil Engineer with them, the actual situation of your site is known. (However, there are so many Geologists with impeccable integrity who will never copy and paste results).

When we say Soil Test, what is it self??
Answer:
The soil underground has different layers (strata) frm the vegetable topsoil down down down. If it is a CPT test or 'borehole' test, they reveal the different types, colour etc above all strengths (bearing capacities) of each layer as you go down. And at what depth is water found. A borehole (SPT) test goes deeper than a CPT. After a borehole test, it can be used as source of water fø̲̣̣я̅ d project.
Random positions are selected on site (spread out well) †̥☺ get a correct representative reality under the ground.
I did one in Ibadan and so that though the site was water logged (we found water at 1 m), the soil was as strong at 1m as 12m in a place in Kogi state.

One funny thing abt soil is that you next door naighbour may use Pad foundation or even Strip foundation dat is cheap, and crossing over †̥☺ your land, it is peat (decayed waste) without good soil till 20m depth. I've seen this many times.

I'd end by saying most times, people who buy already built buildings pay so high fø̲̣̣я̅ the foundations. A guy can build a N80m house in Bayelsa but another can build the same house for N40m. Foundation and management happeneth †̥☺ them all.

Most people do not know who a Structural Engineer is. As a COREN registered Civil/structural Engineer who by His grace rounding-up his Doctorate (@Unilorin), I have sworn †̥☺ uphold and enlighten the society abt d profession wherever I find myself.

I"d be brief and simple fø̲̣̣я̅ now. Civil Engineering has many areas of specialization like: Geotechnics, Structural, Airport, Railway, Highway and Water (put 'Engineering at their fronts fø̲̣̣я̅ me).
As a Structural Engineer, you basically determine the load/forces/stresses via structural analysis and proceed †̥☺ carry out the structural design: whereby the Engineer selects the sizes, types, positions etc of the members †̥☺ use †̥☺ withstand the anticipated ultimate loads with respect †̥☺ relevant Codes taking account of necessary factors of safety and assumptions.

@ OP, when a Qualified and Experienced Structural Engineer takes the DRAWING of the Architect and evaluates the loads, the loads reaching the soil thru the foundation at various points may be 'heavier' than what the soil can bear (Soil Bearing Capacity). So he may advice †̥☺ use Pile foundation that use 'pillar'-like concrete members in the soil. These piles transfer the loads †̥☺ good bearing strata down inside d ground. I've done 1,500 piles of 24m average at Gbagada and even 33 m deep piles at Ikorodu (Agbowa). That was like height of 11 storey buildings inside d ground.
Now if the Structural Guy discovers that Ūя̲̅ site is not entirely bad, he can suggest solid raft or beam and slab raft like so many estates we have done at Lekki axis. What a raft does is †̥☺ spread over the good and bad portions of the land so that the effects of the weak portions of the soil are neutralized by those of the strong areas. Acts monolithically sort of.

In High-rise buildings, U̶̲̥̅̊ either use both piles and raft combined or U̶̲̥̅̊ go fø̲̣̣я̅ vibrofloatation as was used in many at Marina.

kingbang: Please list up to 8 roads done by Ngige outside Idemmili! And tell us his other achievements outside roads! We are waiting.

Its now clear U̶̲̥̅̊ and Ūя̲̅ co-travellers hardly know d state. Let me not b d 1 †̥☺ teach u

Sincere 9gerian: The debate has been concluded without Ngige responding to the unexpected jab from Obiano. Sorry Ngige

Ngige doesn't need †̥☺ answer that statement fø̲̣̣я̅ which Obiano was stopped halfway and corrected by Imoni of AIT †̥☺ focus on the question.
Besides there was № time fø̲̣̣я̅ him response.

The Anambra pple who the roads benefit know d diff btw light and darkness

opalu: RESULTS:
This ACPN guy won d debate on international connections in Germany and Isreal.

The ACD American guy led in Innovation and passion

The AA and CPP and AD all came bracket in praising Peter Obi.


The Apga guy led the debate in world bank issues and in attacking Ngige

NGIGE the APC won in substance, practical experience, political sagacity... Name it

The ACD american guy reinforced ♏Ɣ love fø̲̣̣я̅ Ngige

RESULTS:
This ACPN guy won d debate on international connections in Germany and Isreal.

The ACD American guy led in Innovation and passion

The AA and CPP and AD all came bracket in praising Peter Obi.


The Apga guy led the debate in world bank issues and in attacking Ngige

NGIGE the APC won in substance, practical experience, political sagacity... Name it

AA guy has sense but he was planted by Obi. Too baad

Obaino guy is a shadow . He keeps on chasing Ngige's shadows. Looser!

The american guy has passion, but Ngige has the Substance!

This black american candidate has torn †̥☺ shreds Willy's claims of 1000 km worldclass roads by Obi.

He said he slept on road for 12 hrs with his campaign staff amongst whom was a white Lady who was bitten by millions of mosquitoes. She fell sick and was rushed abroad due †̥☺ BAD ROADS

APGA guy is full of fear.

I bet he will sell d state †̥☺ World Bank

Why did they put Obaino after Ngige? Fø̲̣̣я̅ expo

Valto: Imagine a civil engineer governorship candidate doesn't know what irrigation means

He didn't hear it not that he doesn't know. Dnt abuse we civil engineers pls!
His answer was d best but ngige can make him his Commissioner of Works Drainages

mecussey: 80% of youths in owerri are all agents....high level of unemployment.

At Original Post:
Your write-up sounds professional and looks articulate.
After falling repeatedly into the hands of quacks, most people will blame the real professionals for their failure †̥☺ engage genuine experts in the field.
_{This is the same story with Ladies who repeatedly allowed themselves fall into hands of fake 419 Lovers only †̥☺ turn †̥☺ tell us that ALL men a jobbers who use and dump girls}

olaezebala: Can someone pls explain how this is better than leaving PHCN the way it was? All I see is Ibadan this, Eko that, Jos warev. Those that mean that staying in Ibadan means I am stucked with Ibadan distribution company or whatever the name is alone? If yes then where is the competition to force them to be better? They'll just inherit the old PHCN scam and get richer as well.

I get your point. This new privatization only succeeded in creating 'Territorial Monopoly'. That is the National Monopoly held by NEPA has been distributed †̥☺ the suCcessor Gencos and Discos. So we under Ikeja Disco as ♏Ɣ house is are stuck with the buyer. We don't have any option. When a company knows consumers/customers don't have option, they relax and become lazy. ♏Ɣ office under Eko Disco will elther comply with the new owner or we use our generators forever (?)
What should have been done ideally is †̥☺ have for instance 2 or more strong competitors in each area. We only hope most of these Buyers will transform Power in Nigeria.

chymystique: What are you sayin

Re-read it when you are in a normal mood

Anyone who expects government †̥☺ provide social Housing may wait for ever.
Apart from the fact that greedy people bereft of pragmatic ideas man the decision-making circles. Truth remains that governments world over are crippling under debt burdens.
Best practice is: Selfless Private sector driven housing solutions backed by well meaning Governments is most sustainable and affordable!

kingoflag: How do you "Like her as a person"? Does she know you exist?

Ɣ‎​‎​‎​εs she knows me.
I like your comments but Which flag are U̶̲̥̅̊ a King of?

What surprised me was at the tail end of the wonderful report. 2nd †̥☺ last paragraph. The proceed from this sale NGN 384B (about $2.5B) is tbe used in settling the pay-offs for the PHCN workforce.
In essence there is № saving †̥☺ be used †̥☺ build an industrial area or a critical landmark legacy infrastructure that generations can use †̥☺ rembr.
So the collective property of 150+ Million people can be sold and d proceeds used †̥☺ pay 0.1% of Nigerians!!

A wise man said: if you are not part of the solution, then you are part of the problem!

Pls let's take it easy on each other ooo.
I like Stella as a person but I hate her carelessness of falling into this messy trap (or maybe the greed).
Why fight each other on NL

lawyer: Glad it has been sorted out

What is d legal solution †̥☺ Nairalanders who owe fellow Nairalanders?

@Chekitaut, your story long sha. Thank God you are back.

Do People still pay before delivery of materials in this age?
Our company has NEVER paid before any delivery before and will NEVER do that till Jesus comes! We deal with heavy suppliers that can deliver multi-million supplies and won't expect their money for materials until 3 months based on our agreements with them.
But in your own case since your suppliers are not financed by banks like ours, just pay after they drop materials on site at the agreed quantity and quality
I pray this guy shows up with cogent reason since he sounds sincere from his adverts

Enviromental Impact Analysis EIA may have been carried out on which the state based its design. Road projects are commenced after the EIA reports are prepared and evaluated. If this was not done, the state has †̥☺ do it ASAP.

†̥☺ a great extent, Lekki Express is †̥☺ standard. Many roads in Abuja are better than those pictures you showed as standard above.
Point of correction, the cost of building open drainages are lower than building underground/ subsurface drainages (for the same road)

This Stella case is tiring. Let d 3-man panel submit report and let Mr President settle it fast. Is he not back yet?

keziah123: spyder, my site engineer is charging me 10% of the project cost as his supervision fee. Is it normal?

There are 3 methods I use very frequently in charging clients as a COREN registered Engineer.
1. Percentages: this depends on the complexity and magnitude of d project in question. But for a simple 1 storey stuff, 5%-15% is fair based on the skills and JD of the Engineer.
2. Milestones: you can apportion payments for his services at completion of each milestone. E.g NXXX,000 for foundation, Decking (solid slab), etc. In this method, payments should be mutually agreed and allow for initial supervision mobilization.
3. MOnthly Equal payments: if you have all the finance †̥☺ complete the work in say 4 months. And sure there are № obstacles, you can negotiate monthly equal payments with the Engineer throughout the duration of the project. Signed agreement. This can be better than the percentage method if the contract is not a 'well-structured' type. This is the method I used †̥☺ build a Bank branch in VI in 5 months

I don't know why Lawyers etc are being touted as CBN Gov. What happened to Economists?

mike404: WILLIE OBIANO IS ALREADY SURE OF
UKWULU
AWKUZU
ACHALA
UKPO
ABAGANA
NIMO
ENUGWU-UKWU MY HOME TOWN
NAWFIA
AMAWBIA
UMUOKPU
AWKA
UMUOBA ANAM
UMULERI
AGULERI===== WILLIE OBIANO'S BACK YARD
NTEJE
AGULU AND NISE= ==== PETER OBI'S BACK YARD
AGU UKWU NRI====== IYOM UCHE EKWUNIFE'S BACK YARD




OMO THE LAND SLIDE GO MADT

I laff in igbo!
You guys don't have a single idea that the average eastern voter has an independent mind. What rub.bish is Ekwunife's backyard? Obi's backyard? Etc. We all know Ђ☺w Obi won his re-election bid. It took Ojukwu himself pleading on his sick bed that the last respect †̥☺ him was voting Obi. With the numerous cases soludo was enmeshed in, everyone knew Ngige was far ahead of the pack in that election.