Dsrooftiles:
Nice one from the Op



Current Price of Roofing Sheet in Nigeria.. See here >> https://www.nairaland.com/3364135/roofing-sheets-cost-various-types


See Samples of Roofing Tiles.. See here >> https://www.nairaland.com/3357472/collection-sample-stone-coated-roofing

saydfact:


Thanks for sharing, I'll be using your roof price since I'm also writing on cost of roofing as I type this... thanks

Bravoe:
Wow! Nice Job you've done here.

Planning something similar on a half plot of land. Any suggestions with my plan?

saydfact:


Nice questions asked.

My advice is always have enough money to get your site to the German floor level before starting or at least to the filling level (because German floor is a lot of cash)

Your 1st stage should include:
a. Foundation
b. Blocks to foundation
c. Dig your septic tank and soak away ( https://www.nairaland.com/3502464/how-build-comfortable-house-earning ) I explained why on that link under No6.
d. fill the site and get it well compacted .[/color]

saydfact:


ur mail add, i'll contact u... regards

coxlinda:
Following....God work sir kindly quote me when

saydfact:


1. If my judgement is right - then your Kitchen and Bedroom (CIRCLED IN RED) should be about 2.1m width - a double bed is about 1.8m once you put that in, you can't even walk in the room.

2. Also a kitchen of that size shouldn't have 2 windows - cross ventilation is not perfect for the kitchen, it blows over the cooker and that's bad.

3. Since you said its half plot and seeing the design, I know its 9m by 36m max - how would the car-port function? can one turn a car 90^o in that limited space? No

I'll like to stop here...... #wink

Good Luck

saydfact:


cc: jospepper, Imoy, greenermodels, ShegzyB, seunoj, Sikay19, eddyline, Bravoe,

Bravoe:


Thanks for the prompt response.

Can you please help with an adjusted plan?

saydfact:


cc: jospepper, Imoy, greenermodels, ShegzyB, seunoj, Sikay19, eddyline, Bravoe, currentbrand

saydfact:
HAPPY NEW YEAR, 2017 would be the year we all would make progress in our plans and building....God Willing.


No5: Roofing (Aluminum Long Span)

Welcome back!
I've seen some thread on NL where the OP talked about buying logs and it been cut into sizes to do the roof; our purpose is not to spend the minimum possible but get value for the right professional job done.

We would be using standards as usual i.e 2 by 6 for Rafters, 2 by 4 for struts etc., so lets start by listing the standard sizes of hard wood required for this carcase.

2'' x 6'' ie 50mm x 150mm = Rafter
3 x 4 = Wall-Plate
2 x 4 = Struts
2 x 3 = Purlin / Batten
2 x 2 = Nogging (Ceiling Hangers)
1ft x 12ft = Facial Board

See attached pics 1 for representation, location & use of each roof member, also see pics 2 for the roof plan to our building plan.

Often times you find carpenters using 2 x 4 for rafters and or wall-plates, this and many more poor construction practices are reasons why after about about a year or two, the structure begins to fail. Do what's right and on the long run its cheaper for you.

Next we'll calculate the quantities of wood needed (I don't recommend type of wood, your carpenter can do that ie Akun, Itara etc) but whatever choice you pick spend a little more to treat it.

From Calculation (Using attached roof plan) we have:

Material Quantity & Cost.

Hard Wood:
Wall-plates (3x4) = 18 @ N850 = 15300
Rafter (2x6) = 60 @ N900 = 54000
Struts (2x4) = 55 @ N600 = 33000
Purlin (2x3) = 65 @ N450 = 29250
Nogging (2x2) = 165 @ N350 = 57750
Facial Board (1x12) = 16 @ N2000 = 32000

Total for Wood = 221,300
Transport to site = 30,000
Police & Area boys fees = 10,000

Roof Covering:
Our first exercise is to get the surface area of the area to be covered with roof then we had for waste. The first method is to find the area on the roof plan and add 20% for slope and actual length (approximate method) but in more complex roof, its better to use the actual lengths (calculated via Pythagoras and section through roof) or measured on site after carcase has been constructed.

Using the second method our roof surface area is = 172.8 (add 10% waste) = 190m2
We also have the surface area of the eave as = 36 (add 10% waste) = 40m2

NOW MULTIPLE THIS AREA BY THE COST OF YOUR ROOFING MATERIAL.... depending on your choice of roofing material you might need to calculate the m2 of each sheet then divide 190/S (where S is the m2 of one sheet) so you know how many roofing sheets you need to buy.

Using the prices of Dsrooftiles for 0.55mm Guage Aluminum Roofing sheets (Long span)- 1,950 Per meter (first I would convert to m2) - depending on the width of your roofing sheet varies from 600mm, 900mm or 1200mm or more but we'll use 900mm which I believe is the price given above.

1m of long span = (0.9*1)m2 = 0.9m2 hence 1m2 = 1950/.9 = approx N2,200

Cost of Roof covering = N2200 x 190 = 418,000
lets also use same material for our eaves = N2200 x 40 = 88,000

Thats not all, we still have our accessories; #wink - if the price is getter higher than your budget already remember you can also use the 'Nigerite / Eternit Fibre Cement Sheets' (more affordable) and well recommended.

Accessories: Facial board, ridge cap, gutter, hooks, nails and more depending on your choice, this would naturally run into about 100k (double #wink) - but you could use asbestos for the eaves instead of aluminum to save cost too. Its your choice and pocket.

TOTAL MATERIAL COST = N867,300

Labour (carpentry works of carcase) and aluminum installer should run to about 180,000 (this depends on who and how good they are)

TOTAL COST FOR ROOFING THE DESIGN ATTACHED = N1,047,300 (USING QUALITY 0.55 thick ALUMINUM ALL ROUND)

Remember to have about N50K ready if area boys are in your area and another 50k for miscellaneous

HENCE = N1,147,300 (One million, one hundred and forty seven thousand, three hundred naira)

NOTE: YOU COULD REDUCE OR INCREASE THE COST IN THIS SECTION JUST BY CHANGING CHOICE OF MATERIAL....


ALWAYS ENSURE YOU SPEND AS LITTLE AS 25K TO TREAT YOUR WOOD.

**If I left anything out, please draw my attention to it.


No6: Roofing (Windows and Doors) - I wont be discussing Mechanical and Electrical works because its a specialist job that needs the advice of appropriate professional, and largely dependent on the quality and choice of the builder.

We would continue from here next week.

Stay Tuned.... THANKS.

olumide4christ:


You left out a very important part of the timber trusses...the TIE BEAM OR WHAT IS REFERRED TO AS "BOTTOM CHORD" in the diagram you attached. Do correct that. I also feel your cost of N180,000 for labour for both timber roof carcass and roof coverings is a bit low.

Good work you're doing though.

saydfact:
HAPPY NEW YEAR, 2017 would be the year we all would make progress in our plans and building....God Willing.


No5: Roofing (Aluminum Long Span)

Welcome back!
I've seen some thread on NL where the OP talked about buying logs and it been cut into sizes to do the roof; our purpose is not to spend the minimum possible but get value for the right professional job done.

We would be using standards as usual i.e 2 by 6 for Rafters, 2 by 4 for struts etc., so lets start by listing the standard sizes of hard wood required for this carcase.

2'' x 6'' ie 50mm x 150mm = Rafter
3 x 4 = Wall-Plate
2 x 4 = Struts
2 x 3 = Purlin / Batten
2 x 2 = Nogging (Ceiling Hangers)
1ft x 12ft = Facial Board

See attached pics 1 for representation, location & use of each roof member, also see pics 2 for the roof plan to our building plan.

Often times you find carpenters using 2 x 4 for rafters and or wall-plates, this and many more poor construction practices are reasons why after about about a year or two, the structure begins to fail. Do what's right and on the long run its cheaper for you.

Next we'll calculate the quantities of wood needed (I don't recommend type of wood, your carpenter can do that ie Akun, Itara etc) but whatever choice you pick spend a little more to treat it.

From Calculation (Using attached roof plan) we have:

Material Quantity & Cost.

Hard Wood:
Wall-plates (3x4) = 18 @ N850 = 15300
Rafter (2x6) = 60 @ N900 = 54000
Struts (2x4) = 55 @ N600 = 33000
Purlin (2x3) = 65 @ N450 = 29250
Nogging (2x2) = 165 @ N350 = 57750
Facial Board (1x12) = 16 @ N2000 = 32000

Total for Wood = 221,300
Transport to site = 30,000
Police & Area boys fees = 10,000

Roof Covering:
Our first exercise is to get the surface area of the area to be covered with roof then we had for waste. The first method is to find the area on the roof plan and add 20% for slope and actual length (approximate method) but in more complex roof, its better to use the actual lengths (calculated via Pythagoras and section through roof) or measured on site after carcase has been constructed.

Using the second method our roof surface area is = 172.8 (add 10% waste) = 190m2
We also have the surface area of the eave as = 36 (add 10% waste) = 40m2

NOW MULTIPLE THIS AREA BY THE COST OF YOUR ROOFING MATERIAL.... depending on your choice of roofing material you might need to calculate the m2 of each sheet then divide 190/S (where S is the m2 of one sheet) so you know how many roofing sheets you need to buy.

Using the prices of Dsrooftiles for 0.55mm Guage Aluminum Roofing sheets (Long span)- 1,950 Per meter (first I would convert to m2) - depending on the width of your roofing sheet varies from 600mm, 900mm or 1200mm or more but we'll use 900mm which I believe is the price given above.

1m of long span = (0.9*1)m2 = 0.9m2 hence 1m2 = 1950/.9 = approx N2,200

Cost of Roof covering = N2200 x 190 = 418,000
lets also use same material for our eaves = N2200 x 40 = 88,000

Thats not all, we still have our accessories; #wink - if the price is getter higher than your budget already remember you can also use the 'Nigerite / Eternit Fibre Cement Sheets' (more affordable) and well recommended.

Accessories: Facial board, ridge cap, gutter, hooks, nails and more depending on your choice, this would naturally run into about 100k (double #wink) - but you could use asbestos for the eaves instead of aluminum to save cost too. Its your choice and pocket.

TOTAL MATERIAL COST = N867,300

Labour (carpentry works of carcase) and aluminum installer should run to about 180,000 (this depends on who and how good they are)

TOTAL COST FOR ROOFING THE DESIGN ATTACHED = N1,047,300 (USING QUALITY 0.55 thick ALUMINUM ALL ROUND)

Remember to have about N50K ready if area boys are in your area and another 50k for miscellaneous

HENCE = N1,147,300 (One million, one hundred and forty seven thousand, three hundred naira)

NOTE: YOU COULD REDUCE OR INCREASE THE COST IN THIS SECTION JUST BY CHANGING CHOICE OF MATERIAL....


ALWAYS ENSURE YOU SPEND AS LITTLE AS 25K TO TREAT YOUR WOOD.

**If I left anything out, please draw my attention to it.


No6: Windows and Doors - I wont be discussing Mechanical and Electrical works because its a specialist job that needs the advice of appropriate professional, and largely dependent on the quality and choice of the builder.

We would continue from here next week.

Stay Tuned.... THANKS.

Spymate:
OP u are doing a great work here pls try and include the details for mechanical and electrical
pls i will also like to know if i can use the details for foundation and German floor u gave above for a bungalow (one story building)
pls also help to outline the details for beam and floor slab for a story building using same surface area as urs
thanks

Toronto123:
Hello Sir, what is your background? engineer?

Bobbyunitedfc:
hi...
someone gave me this quotations for lintel casting nd i think its way too much just to cast a 3 bedroom,
34 pieces of iron rod @ 1800=61200

binding wire=5000

squaring=5600

workmanship = 9500

carpenter =45

sand =27'

granite =27k

15bags of cements

labour 25k

total for lintel casting 233500k....

i think is way too much...

saydfact:



It is way too much - what's the length and breadth of the 3bedroom and how many doors are there in total ?

Bobbyunitedfc:


OK SERIOUSLY I DONT KNOW WHAT THE LENGTH OF THE HOUSE IS I JUST KNOW ITS 3 BEDROOM,JUST LIKE EVERY OTHER 3 BEDROOMS I THINK...PLEASE IS THERE A WAY OF ME REDUCING COSTS FROM THE ABOVE ESTIMATES?

saydfact:


I'll assist you with a break down of what it should cost you, use that as a guide in negotiating and buying materials..... The cost I send you would only be a guide ie plus or minus say 20k. (for eg)

I'll get back latest tomorrow with the estimate (if I dont make it today) GoodLuck

Bobbyunitedfc:


WOW......thank you very much brother....20k off that is a huge plus for me

saydfact:


don't misunderstand me - I said whatever cost I send as the real estimate when negotiating dont go above it by more than 20k... lol
I'll quote u once i finish the estimate....

saydfact:
@ Bobbyunitedfc:

I've had a quick check at the breakdown and I find your workmen being sincere giving you that price for the job they intend doing; in simple terms

1. They are planning to tie the lintel all round the building whether there is an opening there or not - I often tell people Lintel and Beams are not the same, a lintel shd be just over the openings, its a beam that runs round on all block.

1a. The reason workmen recommend this method is for their benefits, more money, easier to form (less work) but the client suffers it.

2. I'll recommend you ask them to redo the estimate crossing over only openings and not tie-ing it round the structure - A pics of your building wld help

3. Do you know after spending 100s of thousand doing my initial ground floor lintels, I spent just about 20k doing same amount on the upper floor using same materials i.e concrete, granite and re-bar. (I wont share this method until I'm sure of the quality of your project...)

In summary: The reason you have that huge amount is because your workmen are running lintels over the entire bounding walls; its a price to pay if you want it that way, if not ask them to give you an estimate if only openings (door and windows etc) are considered.


Note: Attached Pics are Googled Pics

A = over only openings
B = round the entire structure

Good Luck

saydfact:
@ Bobbyunitedfc:
What the pics wld do..,

1. I want to check ur soil type - firm or water logged (u can however tell me that)

2. By quality I mean, I want to be sure ur workmen have done the right things up to now, I believe they have. #Wink

I'll contact u for the method I talked about and my consultation on this question is FREE... so don't worry.

Finally... Dont be frustrated - In my building, I used my best workmen and paid them twice what I would have paid some of my other workmen because it's my house.... Every kobo u spend wld be worth it..

Goodluck.... I'll send u a mail via NL.