₦airaland Forum

Memejem:
By general carpentry, do you also do room and kitchen cabinets? Shelving?

Yes sir, we also do that.
I will upload some of our project soon

geebengga:
So how do we contact you, sir?

Here is our contact sir
08169492682

You can also reach us on
jwastecx@gmail.com

We help you prepare detail quotation for all your woodwork, source the materials at a very affordable rate and help you carry out the construction work at a price that you will comfortable with

I am here to introduce Harney projects carpentry and general woodwork.

Ongoing compound interlocks

More updates.
From the kitchen cabinet work

lastpage:
You hit the nail on the head!
Its very easy to say "I charge #3,500 for 8ft x 2ft and it is cheaper by 60% without backing it up with statistics".

What he should have done is a comparative analysis of the form of:

a.) one 12ft x 1ft board costs say #1,000 (therefore an 8ft x 1ft of it will cost #700)
b.) therefore an 8ft x 2ft of it will cost #1,400 and a pair will cost #2,800.
Let us add additonal #500 for Nails and batons (just for the 8ft x 2ft only), making a total of #3,300.

So, a pair of this iron formwork costs #3,500
A pair of the same size using wood costs #3,300.

How is #3,500 cheaper by 60%, when compared to #3,300? Which kind of Mathematics invented that figure?
60% cheaper, of 3,500 means the wooden option should cost #5,600........ whic is not true as l have shown above.

From the simple calculation above, we can conclude that it is NOT CHEAPER AT ALL. It is actually costlier.

But it has its own advantages in terms of speed of erection, neatness, e.t.c.

What the proponent of the idea needs to do (l dont think l am saying something ee does not know already but "excessive profiteering built on minimum turnover" seems to be our way of doing business (business model) around here while over there, it is "moderate profiteering built on massive turnovers" ) is to recondier his pricing model.

He may get three people using his product in one month at the current price or he may get thirty people using his product in one month, at a much lower price.
Which model brings in more profit?
Though, which model he prefers, is up to him.

Nuff said.


Lastpage!

Nice analysis sir. It is not cheaper than wooden formwork.
the 8ft x 2ft ( 1.44sqm) will cost an average of N2,500/sqm.

timber form using very sound timber ( 25 x 300 x 3500mm)
cost of timber = 1200/sqm
cost of the strut, braze, nail and binding wire and occasional bamboo brazing = N600
cost of workmanship = N300/sqm
Total cost breakdown = N 2100/sqm ( which is 4,100 per pair ).

At first glance at this two type of formwork, the prefab type looks quite cheaper at least 39% cheaper, but looking deeper into the advantages and disadvantages will give us a clearer picture of which is better.

The prefab formwork:
It is neater and faster than the conventional type of form using timber or wood but can be very difficult to braze when the beam thickness exceed 0.6m (2ft deap beam). when use for raft foundation, it will be difficult to join them verticall and you will need to provide extra brazing in the form of wood and bamboo, this will automatically drive up the price.

it is not that flexible to use for raft or beam fromwork because there are cases where you will need to form a beam that is less than 2.4m (8ft) in length, since you can't easily cut the the form work.

It is difficult to get the joint of the beam or raft formwork done

The wooden/timber form
It is more flexible
It can easily be brazed by batting and bamboo during raft construction.
It can easily be reused for subsequent job like the lintel or the slab/decking during construction

In summary, Timber form will be ideal for custom built home, where the depth of the raft exceed 0.6m (2ft) while the prefab will be ideal for mass housing design where the raft beam is design to be in multiple of 8ft in length, for drainages and other infrastructure project

Shortyy:
Lol diswan never jam. Money ritual is as real as you and i! Dey there..

Money ritual is a complete hoax. It is a myth propagated by our stupid movie industry

Rubbiish:
Doesn't the grade beam also requires some depth sir?
Is it suppose to be on the NGL?

The grade beam doesn't require any depth because it is not distributing the load to the soil beneath it but rather to the pad footing via foundation column.

Note: before any work can be done it is standard practice to remove all the top vegetable soil and also have a blinding of at least 50mm for the grade beam

Aventures:
God bless you, sir. I have design exactly this type of foundation for a proposed project in the past. And I have also involved in the construction of such design in lieu of pile foundation some long years back. I can tell it is a very safe method.
You have actually nailed the matter. If the structural Engr won't mind doing the two designs I:e pad footing and raft then cost analysis will be easier done for decision making.

You are one of the most respected engineers on this forum sir, you always give a very detail solution to problem. I always enjoy having this type of discussion with you. Thank you, for your professionalism.

Aventures:
Thumbs up!!! Guy you have exposed all our theory oooo. Good one. Anyway I have some reservation. 100kn/m2 bearing pressure could generate some very big pad footing, then having to dig to a depth of 1.5m will be a great challenge in the sense that if the ground is a loose soil there would
be a lot of backfilling(falling of the sides of the excavated area) during excavations. Due to the possible big size of the pad (mat) may over run int
o each other.
Considering, the cost of running this cumbersome pad footing, it might not make much difference from doing a raft. The soil engineer also recommended that raft is highly recommended. with a bearing capacity of 50KN/M2 you are good to go with raft.
My humble submission, a constructive correction is welcomed sir.

That is also a good solution sir. But in this case, a raft foundation might be more expensive than an isolated pad footing. That is why structural engineering is such an interesting field, there can be 1million solution to the same problem but the best solution will be the one that satisfies the safety and economy of the structure.

For a one storey building carrying one suspended floor, the worst point load coming from the structure might be 300KN, this will give a give a pad base area of a 3m2 (1.8m x 1.8m), this will be more economical than a raft footing in my own opinion.
From the soil test report, the soil is predicted to be predominantly cohesive, hence there wouldn't be a problem of soil falling back into the foundation at a depth of between 1.2m to 1.5m

The type of foundation I am proposing here is the one with pad footing and grade beam ( different from the normal one of pad footing and strip footing).In this case, only the pad footing is dug up to that supposed depth of between 1.2m to 1.5m and the foundation columns are connected at the ground level with a grade beam to carry the wall up to DPC level, the DPC and the ground floor partition walls.

Finally, If after a detailed structural analysis, design and estimation of the cost of materials using this method is more expensive than say raft foundation, then it will be better to go with a surface raft

more video from the foundation of the building


https://www.youtube.com/watch?v=iR7MhJ3dIsE

Here is a short video from the job


https://www.youtube.com/watch?v=X5h0cei5Kfc

EgunMogaji:
Good execution as usual Sir.

Thanks for helping with my roof calculation, you are a selfless professional.

Looking forward to collaboration in the near future.

You are welcome sir

Rubbiish:
What is the maximum span a timber truss can cover without intermediate support sir?

I will say it depend on how one wants to use the timber, sir.
Has a truss, if well constructed with all the joints properly done, it can go between 6 to 7m without intermediate support. In this case, you will need to specially design the connections and get them fabricated to the required specification because the connectors are not readily available in commercial quantities in Nigeria.

FADEO:
Good day knowledgable people, I want some clarifications. I carried out soil test to certify the kind of foundation to be done. The result cam out as SBC (Safe Bearing Capacity) is 100KN/m. The recommendation from the result is to have pad Foundation with underground beam but was also stated that Raft Foundation is highly recommended. My civil/structural engineer was of the opinion that i we can have PAD FOUNDATION with Chained underground beam with one board, Continue with 9" block work to 0.9m and then finalize with one board of chained beam before the slab (german floor is casted)

The building involve here is a 5 bedroom duplex.

Please i need opinions on this based on experience.

Thank you all

I have gone through the soil test report and here are my observations.
1. soil safe bearing capacity of 100kN/m2 gotten from the soil test report using Terzaghi bearing capacity equation is adequate to carry an isolated pad footings
2. the water level is 3.6m below the existing ground level at the pick of raining reason will have little effect on the settlement pattern of such footing
3. A settlement value of 85mm gotten through the consolidation test is okay for an isolated pad base for the proposed foundation
4. From the soil test, the site was also observed to be above the road level, hence the ground floor level don't need to necessarily be too higher than the NGL. Also, the runoff value shows that the site is not prone to flooding, this also helps to reinforce the need to have a very high ground floor level.
5. Finally, a suitable bearing capacity occurs between 1m to 3m below the NGL, hence the depth of the foundation can be located with this dept (preferable at 1.5m below the NGL)

Here is my conclusion:
To get the most cost-effective and safe foundation,
1. A preliminary load estimation of the superstructure should be carried out to determine the expected superstructure load coming into the foundation through the columns ( this load should also include the ground floor walls)
2. A preliminary area of the pad footings should be estimated, from P/Q (P = unfactored superstructure load, Q= safe bearing capacity)
3. A grade beam of 300mm thick should be proposed to tie/link or the foundation columns at the ground level, this will also help to carry the ground floor walls ( this should be a preliminary depth, which should be subjected to further analysis and design according to relevant codes and literature
4. the foundation level should be raised to not more than 750mm above the ground level since the NGL is already higher than the road level and the site is not prone to flooding. This can be done by adding 2 courses of block to the grade beams and a DPC thickness of 150mm after the two blocks.
5. The depth of the pad footings should be not less than 1.2m, preferably 1.5m below ground level.

Note NGL= natural ground level
DPC = damp proof course/ german floor

Dunamix:
please I need your opinion... I have a long span of about 10m to roof. Due to cost am considering using wooding truss. Pls how can I possibly achieve this. the building is a hall, 22m X 10m dimension. no internal walls. am considering scissor trusses pattern

I think it is not that simple to construct. Having a long span10m requires good structural calculations and design to determine all the forces acting on the trusses, the best material to use and the best section to adopt. I don't think our Nigerian timber can span 10m without intermediate support, you will most likely use a steel section and you need a good engineer to design the safest and economic design for the truss

Dunamix:
please how would you channel the roof not to drip water on the wall

Which of the roof

fabulous85:
nice work bro. can we see pix of the pop work for the flat screen TV. thanks

Yes, here it is

More updates from ongoing Screeding work

More tiling updates

Tiling of the toilets and bath areas

More updates from our tiling work

Updates from ongoing finishing

grandstar:
Zidane sef, the man of the finals is of Arab descent

Zidane is of Berbers stock, an indigenous North African group

adanny01:
The bolded are artisans. Even artisans are registered by COREN in their own category.

Have you heard of CORBON (Council of Registered Builders of Nigeria), a building contractor should be a member.

What i mean by builder is a person who studied a professional course that carries building as a core eg Building Technology.

These set of people are trained building contractors not the type we have all over Nigeria.

The construction industry in Nigeria is not regulated that is why we have every type of people claiming to be contractors. I once worked as a Civil engr in a property development company where the entire management had no single building related professional. I have a friend who is a so called contractor but is actually an electrical engineer. This guy built a plaza belonging to his brother in Abj recently. All he needs is a Civil engr who will sign an undertaking for the project and he can do anything he wishes while in the event of a collapse, he walks away blameless.

In Abuja, you will need much more than just an undertaken letter. I have worked on a number of jobs in Abuja, your site will be visited at every structural stage of the job, namely, at the foundation stage after the arrangement of your rebar before placement of concrete. At the decking/suspended slab stage after the completion of slab-beam reinforcement work before casting.

Abuja has the best developmental control unit in Nigeria and the quality work done is much better sue to this. A lot still needs to be done in this area to really sanitized the building construction industry

itswell1:
Boss just looking at the debris,you will see not enough cement was used. So if something as simple as cement was poorly used then I don't need a soothsayer to tell me other materials used in that site has K-leg

You are spot on about.

itswell1:
What are the brand names for nigeria tiles. i know CDK and a couple of some local manufacturers produces tiles .

What are thier brand names? like for example Goodwill is name associated with China tiles and you see this on the carton(packaging) .

So those who have purchased and used NIGERIAN TILES in their project should please list the names here for us Novice to learn from

Thanks

Goodwill is a Nigerian tile
Other brand of Nigerian tiles readily available in the market includes but not limited to
1.Cdk
2.Goodwill
3.Royal ceramic
4.NPN
Etc

itswell1:
underuse of appropriate materials and poor craftmanship caused the collapse of this building, not even the issue with the architect which is another separate case

How can you make up such assumptions without actually visiting the site?
There are thousands of reasons that might have lead to such a building collapsed. Most of the time, lack of proper structural designs and implementation of such designs are the major reasons for such calamity

KingMicky3286:
Where are you located?

Abuja but I am currently in Lagos

Teebawse:
The quote is padded,1 ton of 12mm is 185k, bag of cement is 2600 if it’s in Lagos,binding wire 1 bundle is 8k too, 2*3 plank is 150 per piece, 30ton of sharp sand is 45k, 1*12 plank is 1130, am r can doing a project of twin duplex in ajah in a water logged area and these are the prices I bought these stuffs for in Lagos,so if your project is in Lagos I advise you buy the materials yourself and negotiate workmanship,this is how I have been doing mine,hope this helps

185k is for local iron, when you want to buy tiger, cookit etc it is 230k upward.

You can get plank for N1130 but very good one start from N1300 upward, salt-free sharp sand is N50k upward for 20tonnes

EMMAACHILE:
Saw this article in my mail just now. See link below though it's about Canada as destination.

Nigeria’s stressed-out middle-class is trying to leave in droves and the destination is Canada. Very soon, only the very poor will remain behind

https://qz.com/1271591/nigerias-stressed-out-middle-class-is-trying-to-leave-in-droves-and-the-destination-is-canada/?utm_source=Africa.com&utm_campaign=f9999c7412-EMAIL_CAMPAIGN_2018_02_23&utm_medium=email&utm_term=0_12683c81a6-f9999c7412-29257901

And you think, a country like Canada of only 35m people will openly accept economy immigrant of over 40m people ( a conservative estimate of Nigeria middle-income class) form one single nation with totally different culture, education standard and race? Bros abeg think am well na