₦airaland Forum

saydfact:
Hi.
First I read a comment where sm1 said you shd break... DON'T.

2, the shape of the soak-away don't matter, so don't worry about the bent (converging) side, what you shd be worried about is the cracks and possible leakage.

Solution.

Continue to sink the septic tank until you get to the FINAL POSITION.

Then, see the existing 4 walls of the Septic tank and your EXTERNAL FORMWORK.

Proceed to create internal formwork 150mm thick minimum ALSO reinforced with 12mm rods @ same spacing you used before.

Lastly, cast the new concrete wall and enjoy.

You'll have a wall of about 350mm thick and a slightly smaller internal dimension but no worries....

Keep. Me. Updated. If. You. Need. Further. Help.

Thank you so much for your non-judgmental advice.

OnMyHonor:
In my own opinion, you will have to breakdown that Long Part of the Precast that is collapsing, no two ways about it.
Break it, retrieve your Iron Rods and redo it (Sink the smaller side first and then sink the new longer one.
Sorry about the waste of money but it is better than having a problematic Soak-away in the ground.

What caused it?
Let me hazard some guesses, from what l can see in the picture.

1) The Precast Walls are Too-Thin. There is a minimum spec for such Soak-away and l think the thickness should not be less than 18cm/1800mm/ 7inches.

2) The Precast was not properly Cured/Dried, before trying to submerge it. The surrounding ground Sand around the Precast will continue to exert external pressure on the Walls of the Precast and if it is not properly cured/dry, the pressure becomes too much for it to withstand and it will collapse. Ideally, you should allow concrete to cure for 21days before loading it (or 15days at the very least, if you water it constantly and it wont be carrying direct weight).

3) Wrong or Poor Mix Ratio. To get the best strength, each mix of Cement, Sand and Granite follow a particular order, depending of where the Concrete is to be used. If, as l suspect, the Sand is too much, or the Cement is not enough or Water is not enough in the mixture, it may not set properly and will buckle under the weight of the external pressure.

4) Finally, for "Long Walls" that will be under Pressure like the long side walls of a Precast Soak-away, l think it is usually good practice, to institute "Cross Columns" from the inside, at the Centre Precast.

Can l also suggest, as told by my "Bashy Builder" some years back, using STONE DUST in place of Sand, for Concrete Casting, gives a very strong result, I have tested this and found it to be true. With it, your Columns and Beams can be leaner but they are much more stronger.

It was when Artisans needed to Chisel a place, to fix a Door that was made too big by inches but we felt we should not reduce the Door but Chisel the Concrete Wall so it can fit in, that we realized that the Concrete made from that Stone Dust, is like steel, Chisels were just breaking and it showed us pepper.

Thank you for your honest and helpful advice without judgement. You’re a gem.

uwemjack:
The septic tank has failed because it was not properly reinforced and the span is too long to cast on the surface and sunk as a unit. Money used here is lost already.

I will recommend you cast a new septic tank within this failed one(the failed one will act as earthwork support), but make sure the walls of the new cast are double reinforced.
Engage an engineer to give you the reinforcement design details to be used.
I'm not an engineer!

Thank you

Badgers14:
Wahala wahala..

I was just wondering the engineers thought process? As it is now, how did they plan to proceed as their initial plan did not work out?

I am not an engineer myself but maybe that was a wrong approach to begin with?

Thank you

Hello people, please I need your honest advice on how to remedy this sockaway project. The person is trying to build a precast sockaway because the soil is sandy. However, while trying to dig the ground so the precast sinks down, it cracked and why trying to figure that out, the side starts to compress.

I will be in the comment section to read your honest advice. Many thanks great minds.

This is so saddening! May his soul rest in peace

God is never late… Just have faith that He will settle you because he promised His children that ‘none lack their mate… Isaiah 34:16’

Non-sense and ingredient... Them for no release em now

[quote author=aieromon post=120722473]Thanks for your response

Oga, if you suspect anything, just take it to God in prayer and see how God fights all your battle. You're the head of the house and just as na only you dey eat fowl lap and biggest meat, make you too dey nearest to God abeg. You wife is an helpmeet( assistant), na you be chief priest of the house. So you have plenty authority in your mouth, just use it and be glad

Hello pharmily... Please i need advise. I just got inducted into the Pharmacy profession but i will relocate abroad by April due to marriage. Should i commence my internship and leave in April, or not commence internship at all. Also can i practise abroad when i haven't done my internship in Nigeria.

Please help a sister, am so confuse right now.

I like it o

Please go to the hospital to be thoroughly examined. If it's liver or kidney infection as those people postulated, then you mustn't joke with such before the infection translate to damage of organ and the money wey you no wan spend, you go overspend em and even still beg for support

Nevertheless, the foundation of God stands sure having this seal, the Lord knoweth those who are his and let everyone that names the name of Lord depart from iniquity. 2Tim. 2:19

Them don pay you to spill rubbish ba

My brother, e reach o


Please be a good ambassador of Nigeria over there.

My brother, enjoy jor.
This na authentic balance diet

I celebrate grace

Their business! If he like make he give em belle.


As for me, I am too obidient and useful with my life

I'm very impressed with these bandits atleast for the first time. They should go after those looking away from what is happening in the country so that they can rise and do the needful


All these orderlies (people's husband and fathers) should apply wisdom when protecting their ogas o... Cos the Oga wey you want die for is part of the problem of the country.

Shaking my head for this man walahi

Because most irresponsible guys are cute

Las Las, these mods sabi use big brother naija distract person sha.

My condolence to the families of the deceased

Thunder fire you

Silly hypocrites

The Lord knoweth those who are his

So that all the toddlers and unborn children can register

Physician! Heal thyself first

Repentant my ass! Good justice if you ask me.
Since the government is too corrupt and weak to do the needful, nature has done it.

Nigeria has really failed us

We join hands

Those immigration guys are thieves... Paid a whooping 40k and other charges to do mine and they still asked me to come back in 6weeks.
And they still asked me to sort them with something for assisting me not knowing hat they already added lots of gain(19k) on top sef.

My God will judge them.