₦airaland Forum

You may engage the service of another supervisor and let the Architect visit to confirm they are building to his design flows and pay him for those visit and don't mind the person saying they can do it for 750 k its a 3 floor building with lot of commercial activities .

For you to have another great cost reduction in supervision is determined by how many month the project will last for ..

For people asking what is the work of the supervisor don't understand you are investing a huge some of money and any error may lead to collapse of building or a non aesthetic hostel which is more of a selling point to your hotel(business)

Take quote from other builder Engineer and architect and compare. If he stands on the 3m and u have it employ the service of 2 or the 3 of this people
A builder
A structural Engineer visiting & approval
An Architect more visit and approval

megacontrol:
Hello<

Do you supply rods?
If yes, pls state location and current prices.

Thanks

Good morning yes.
payment on delivery
current price local 285,000 per tonnes
TMT 335,000 per tonnes
price include delivery to site lagos '



We now offer a flexible option which is more cheaper you pay directly to the company i collect the teller and load your goods directly to site.
for this
TMT 320, per tonnes
local 270k per tonnes

binding wire is 8,000

whatsapp or call contact check my signature pls

uncleteeh:
Beware! Beware!! Beware!!!

you only typed beware sir, without giving proper reason just curious to know because this reply seems to confuse me more than the original poster self

Prices updates,,,

local #280,000
TMT #335,000



NB this local is not up to gauge this time around I will call 10mm (9) and 12(11) etc

raymondFirstborn:
The [b]structural engineer [/b]specified we break 700 - 750mm in. Which is what we did.

Then as per "hidden / concealed beam" , it's widely used globally and recognized by all construction regulatory Bodies. Hidden beams carry the same depth as the slab and proper calculations have been done in this case.

Following like I ve said for us not to derail this journal.
How much is block and cement along that axis

raymondFirstborn:
The pictures didn't do justice

Lol structural drawings properly followed.
Structural drawings done by a COREN Registered Engineer.
The cantilever in question is not load bearing, it's a balcony for the master's bedroom 5m long x 1.2m.
Hidden beams Y16(6nrs T&B) and we have both horizontal and vertical.

Most of us here are qualified builders.
I have a certificate in quantity surveying and Civil engineering .

There's nothing like hidden beam and the cantilever does not satisfy code requirements .
Truly you may follow the drawing but its wrong and satisfied by a coren registered engr is not a rule.

Reason he's trying to play safe with the hidden . he could have drop the beam and POP it underneath or satisfy the code requirements for the cantilever slab by returning the bar appropriately. I get he's trying to save cost by not wanting you to break the slab behind by almost 50℅

.

Saying it's not load bearing is also bending the rules oo

By the way clean job following

n3xt:
Ohk! Thanks. If I'm doing volume, I believe I should get a good bargain.

Sure when we see how things unfold hopefully you get from us one day.

n3xt:
@amastermovic

Please kindly give updated prices of various sizes of iron rods (both local and TMT) as at today.

8mm
10mm
12mm
16mm
20mm
25mm

Thanks.

10,000 naira increase today on TMT

TMT 335k per tonnes
Local 275k per tonnes

Yesterday price
TMT 325k
Local 275k

For tomorrow only God knows that

Price include delivery to site when fuel price increases as projected both will inflate more on transportation and cost of production

project supervision Is around 5% of total project or 5% of stages you intend to do.. this can be negotiated

Price varies on scope and technicality of the said project

Rexceedo:
All materials are handy. How can i negotiate and know how much is okay

Labour fees depend on location.

Other form of negotiations is tricky if they quote cheap you don't expect a good grade concrete etc

If they quote high doesn'twarrant a good job likewise

Supervision fee is always of preference to a particular person if its not a firm handling it. So look for Someone create a good business relationship.

How much is okay depends on scope of work terrain and your site personal challenge's . maybe a sketch can gve d assumed cost if u have

Rexceedo:
My bosses,
I finally decide to start developing my lands this year.
Am starting with a 2storey twin flats(1 Two bedroom flat and 2 One bedroom flat).

Please is it advisable to pay for labour myself or give it out to an engineer?

How much is apt for labour plus supervision till DPC?

If you pay for labour who will supervise the building and read out all drawing in relations to another and also look out for conflict.

If you have the fund gve it out to an engineer

Or contact a Quantity surveyor get all materials on site and pay for the supervisor service fee and negotiate labour

abcivilengr:
Have anyone here ever done a cantilever slab of about 2m and also loaded... I need clues on the safety

1.85m or so SAFETY CONSIGN
Take note of all loads acting on it and if there's any partition on such slab it must be account for ..
if a partition is not on the architectural drawing pls assume there's and load the edge of the cantilever because the design maybe review during construction
The detailing aspect is crucial the tension bar should be return by 1.5L of the cantilever span..
Its safe and possible when design properly..

cost wise
If you not really comfortable with it and wall load will be aligned to the edge use upstand beam this will reduce the depth of the slab and other sections because initially u will have a dipper beam section to counter the effect of the cantilever.

hairbyuj:
Please how much be the price of

1ton of 10MM,

12MM

16MM iron rod

Site is in Awoyaya.

local per tonnes is 260, 000
TMT 315,000

Price include delivery to your site (LAGOS)
@n3xt thanks for the Mention

updated price for steel
local 260, 000
TMT 315,000
All prices include delivery to lagos site only.

segzyfunmi:
Pls professionals in the house, help answer my questions.

No one will do over site conc. at that rate some practical reason .

Cost of boarding the edge (carpenter will charge you)

The carpenter still needs to be there should in case of unforseen event

Cost of machine and operator

If you settled for hand mix Manson will charge more to mix. Over site conc. Mix becomes harder heavier than just blinding

When labor hear concrete forget it they will likely not take 1500 except all stages of work is guarantee for that gang.

Like next said share your plan or gve this project to a Q's to quote for you

diordaves:
Without the plan, the figures here are just ballpark figures but this will give you an insight into how this is done:

#Digging the foundation of 3 bedrooms aim for 50k.
(In Abeokuta, this might be tricky as the town can be rocky and difficult to dig but then again, because of the terrain you may not need a very deep foundation to get to stable soil).

Blinding aim from 35k

The setting of foundation block: I don't know how big is you flat, but let's guess 1300 blocks with a high foundation. To lay one block is N50.
so 50x1300 = N65k

Iron Bender to tie the basket and columns: aim from N35k

Carpenter formwork aim from: 10k

The casting of the Columns: For three bedrooms, depending on your design, your total columns should be around 16 columns. To cast one column aim from 1k per column.
So 1x16 = N16,000

Foundation and back filling aim for: 15K


Wetting of foundation (compacting) - 1k

Casting of German floor aim from: 10k

Total Labour: N237k

These figures are highly debatable but hopefully, you should now have an idea on the direction of travel.

BLINDING COST 35K y is casting of german floor now 10k pls guide me .

segzyfunmi:
Good evening to everyone.


Pls I need a quick professional response on my matter.

My uncle wants to start his project in Abeokuta on Monday. His site has been cleared and foundation is to commence on Monday. He just funded his daughter's wedding last Saturday so he's not too boxed up, but he still insist on starting with one loose fund of #2.5million.

The problem is the engineer in charge is insisting on 3Million as indicated on the BOQ prepared by him, then an additional 5% of 3Million as the engineer's fee. Labour alone is 550k excluding engineer's fee.

It's a plot of land with very hard/dry soil in Abeokuta. The plan is strip foundation of 3bedroom up and 3bedroom down. That's just a storey building.

Professionals in the house pls help analyze if this high cost is worth it.

The 3 million is to what stage of work

I like the idea of strip footing also..

Get the structural plan and Architectural plan and give to this thread member quantity surveyor .
Let him quote in stages for you.

Maybe by Friday I will relocate come Abk to handle this job for you sir according to the specification quoted

My love for Abeokuta

PrimeQuay:
Kindly update us on prices

16mm
12 mm
10 mm

Thanks

Good morning updated price for today including delivery to site

Tmt Tiger 315,000 per tonnes
Local 265,000 per tonnes

megacontrol:
Thanks a lot.

You've also touched on very cogent points, most are already covered in our structural plan and therefore already considered.

The reason I asked that specific question is that even when the plan states a cover of 20mm (i.e. 0.78" and you translate that to granite sizes, it appears to me like both 3/4 and 3/4 down qualify since that's 0.75" when converted.

All points considered, we will go with 3/4" (0.75" for this particular slab.

Just for the sake of learning... what is the 3/4" down granite size commonly referred to as in mm? also 20mm (since it is smaller than the 3/4)?

Cheers.

Ok i will explain
the 20mm for maximum aggregate size is no 6 in the general note you uploaded ..I did not use cover to determine this .you will notice the cover for your foundation , beam, column , are all different because this are major element as an example

the reaction of the soil can have some great impacts on the concrete which may attack your rebar and this will lead to loss of strength, this cover is determine by ground conditions

for column/beam etc weather condition and fire rating to protect the reinforcement one of the advantages of concrete building though..

i think 3/4'" down should be in the range of 3/4"' to 1/2" sieve varying . I stand to be corrected though

megacontrol:
Guys,

Which one of 3/4" or 3/4" down granite is more suited for 175mm slab casting and why?

I am considering using the 3/4" due to the high volume involved as that will consume less qty, are there other considerations i should be looking at?

thanks

size of aggregate use is always determine by the clear cover of your structural member , check your general note you will notice the size of aggregate for each structural member..

in most cases we use 20mm coarse aggregate after factoring the cover after placing your rebar(iron) for you not to high have pores which leads to weaker members at times...

contractor then prefer to go for lesser size for some reason clean job because of workability problem with higher size of granite, when they use this granite size it makes them save in labor cost due to time and more job recommendation because you see everything when the formwork is removed comes clean ..

in your own case for now any structural discussion one have to have a clear scope of work before giving advise
do you have beams you want to cast together with this slab and what size is the width and how many number of reinforcement do u have at top and btm .

how close are you to a fire station ?
purpose of structure?

for you to have a 175mm slab we may likely say deflection plays a major role in your build also .. in any ways pay attention to workability and don't go and cast grade 15 in the name of making concrete workable.

stevemims:
What're the current prices for:

12mm
10mm

@next

Local is 260k per tonnes including cost of transportation to site
Lagos Axis only for the transportation cost included @n3xt thanks

TMT as at this morning (09/01/2021)is 325k per tonne
Local is 265k tonne

Price include delivery to site

kingzsoul:
Hiw much is 1tonne of 12mm

Sorry for the late response
TMT as at this morning is 325k
Local is 265k

Price include delivery to site (Lagos)

michlins:
is there a significant change in the prices of steel at your end

Current price
Good morning to you Sir,

TMT as at this morning is 325k
Local is 265k

Price include delivery to site

Previous price

TMT/HITECH N 320,000 per tonnes
LOCAL N 275,00 per tonnes.

aji2000:
Please I need a trustworthy aluminium fabricator, I need estimate for 3 bedroom flat

i can recommend one for you send the measurement
yusuf 09030324890, 08120050803

Good morning ,
I made contact with one of our major reinforcements (steel ) suppliers, we had the following agreement to supply adequate sizes and result.


For the local we will request from the company or probably take it to LSMTL .

current price TODAY
TMT/HITECH N 320,000 per tonnes
LOCAL N 275,00 per tonnes.
Price inclusive of delivery to anywhere in lagos.

WHATSAPP/CALL 08103776089

https://www.nairaland.com/6351429/buy-reinforcement-iron-rod-us

Good day
we sell and deliver reinforcement direct to your site anywhere in Lagos
Reinforcement are of full gauge

current price TODAY
TMT/HITECH N 320,000 per tonnes
LOCAL N 275,00 per tonnes

WHATSAPP/CALL 08103776089


PRICE INCLUSIVE OFF LOGISTIC TO LAGOS SITE ONLY

note thread will be updated when there's an increase in price generally

folmus:
Recommendations for those doing kobo kobo projects who do not know how to run the test?

Some distributor's already carried out this test from where they pick from and you may request for such result . if you are not satisfy take it to any available lab yourself.

Good morning all,

On the issue of reinforcements using local bar , TMT et all., and the cost implications ,strength..

The designer of any structures choose the grade of steel he/she intends to design with, this grade will be clearly written at the 2nd page (general notes) or on each page footer of the S.Drawing, the implications of this grade choose for your project will determine robustness , number of required required reinforcements in each structural member
Lay example below.

If I use 410n/mm2 say column of (230x230mm) for a duplex it may requires 6 nos of T16mm and use grade 460 for same column it will require 4 no of T16mm (assumption), the implications of this is that if baba lati supervise for u he will do the following

1)Tell you he built same thing at honourable place @ lekki they use 4 No's of 16mm and the structure is still standing till today.
2)This Engr is not considerate
3) charge you for same 6nos and put 4 No's inside, And cast

forgetting or lack d knowledge of variables and notes in the Drawing.

To the main discussion we have various kind of steel in the market , which most are very bad and good only known brand can easily be passed , most of all this local steel of unknown origin are having same properties as plain bar(unthreaded bar (that iron we use for burglary then)) ..

How do you recognise all this in d open market?

Its difficult for small project since u will b procuring ur steel in batches and from cheapest source available ,u will likely not run a tensile strength.

Large projects and mindful owner (contractor) make use of standard and mostly consultant is always on site contractor will b mindful else he will waste money when ask to break concrete and re do and he looses credibility gradually because during next meeting on a job and such contractor name is mention we strike such out without d company knowing self.

Summary
Buy iron brand that's traceable with clear identification on it

Never reduce or propose what's not in ur drawing without ur designer consent

Quantity surveyor should always quote reinforcements using quality brands price because contractor will not buy TMT when u quote local to make thing's cheaper

TMT is good , local is likewise good if you are running a test or buying good one

michlins:
the most important part of tank stand is the foundation. It varies from place to place and that's why it's recommended to do the job on site so you can see the soil you're working with and find out the kind of foundation it requires. What works in Nnewi will NEVER work in Lagos.

The weight of water and load is same everywhere and as such same material that works at point A can work at B provided the weight, height remains the same. It's a hollow structure and so wind can freely pass without compromising the structure.

Another factor is the ability of the welder to weld well. I don't know how to explain this part.

If the three factors are adhered to, you will get a structure that will outlive the building

You made mention of the foundation,

how do you calculate this load and transfer to the said foundation ?

Wind is a major factor too.

Reason same materials may not work is because of wind I will gve a brief lay example below..

If you build close to sea or open up area or hill where no winding breaking occurs at much such section may likely not work except for proper bracing compared to building such stand at Ikeja where its relatively developed or behind ur building..

The base plate, stiffeners, bolt ,welding even painting are all recommended.

The reinforcements in the foundation how do you go about it? Do u know which is the main direction, do you know where to splice your section or how to connect back such.

From your believe what engineer does is use same section change the wind pressure to see if it works and check the load against the Soil bearing capacity of same area Sir it work's u r good to go if it doesn't adjustment comes in and modification Sir.

I will provide you with your next 3 project on this tank stand drawing free since I notice this is what most people want to contract your service for here..

You will make a good fabricator since you are technological inclined ,

https://www.nairaland.com/3522155/iron-tank-collapses-secondary-school