mufutau55:
Oga mi, very good and detailed write-up.

What size of iron reinforcement is needed for the two gates columns?
What is the estimated budgeted supervision fees for the contractor/supervisor/engineer/builder when Baba Lati is not totally used?

Nah just more information to complete the cost ni o.

Hajji M.

segzy14:


Thank you boss.
The size of the reinforcements to be used for the columns of the gate is 16mm.
Every contractor/supervisor/engineer/builder has his/her cost, but the ideal cost should not be more than 100,000 naira to 150,000naira depending on many factors.

mufutau55:


Thank you. Very good. Very detailed info.

Hajji M.

segzy14:


You welcome boss.

9free:
Very detailed and informative write up. But the monies Nigerians spend on fencing alone will be enough to solve the housing needs of some small African countries.

segzy14:


True talk bro.

princeifynicky:
this is welll detailed and highly informative. Well done SAE. God bless our efforts this year and beyond.

segzy14:
Good day.

segzy14:
Good day..

folmus:
Good info and detailed analyses. But why is today January 8?

segzy14:


Boss, today is February 7, not January 8.[/size]

mufutau55:


Depend on which calendar you use o.

Hajji M.

segzy14:


Boss, please tell me the available calendars.

femijay8271:
nice write up

mufutau55:


Ok o. I dey come.

Julian Calendar
Gregorian Calendar
Muslim Calendar
Jewish Calendar... make I dey go?

About estimated 40 calendars in all...

Hajji M.

segzy14:

Ensure you fence your property after purchase and getting all necessary documents to avoid trespassers.
I will be showing you how to fence your property and putting a gate on it, coupled with the necessary building materials that will be needed for your fence.
Our case study will be on a plot of land,
18m x36m(60 feetx120feet).
Below is the Processes and their cost;

1. Site clearing:
This is the cutting and removal of bushes and shrubs within the property. This is the first operation to be done when the beacons of the plot has been set by the land surveyor.
It is done in order to prepare the site for excavation and other site activities.
The cost depends on the size of the plot, the people performing it and the equipments to be used. The cost ranges from 30,000 naira
and above.
Total cost for this stage is 30,000 naira.

2. Excavation:
This is the process of digging the soil out where the foundation of the fence/building will sit on.
The cost depends on the size of the plot, the depth to be excavated, the equipment to be used and the people performing it.
We will calculate the cost of excavating a plot of land 18m x36m(60 x 120ft)
Depth of excavation =600mm= 0.6m
Width of excavation =675mm=0.675m (i.e 3x225mm(9inches block))
Length of the plot= 18m +18m +36m +36m= 108metres
If we are fixing gate , we will deduct 3.6m (12feet)for gate
Length of plot =108m -3.6m = 104.4m
Quantity of materials to be excavated = 104.4mx0.6m x0.675m = 43cubic metres
The rate of excavation ranges from 750naira per cubic metres to 900naira per cubic metres.
Cost of Excavation = 43cubic metres x 750 =
32,250naira.
Total cost of Excavating a plot of land 18 x36m is
32,250naira only.

3. Blinding:
Blinding is a layer of sand , granite and cement throughly mixed to provide concrete, it is placed on the ground after the excavation to provide a level surface and a resting place for the fence/foundation to sit on.
We are going to calculate the materials needed for blinding like the cement, sand and granite.
Often times concrete are mostly 1:2:4 ratio, when you see such specification, it simply means one bag of cement to four headpans of sand and eight headpans of granite.
Note that the first number represent a bag of cement which is equivalent to two headpans, hence the sand is taken as four headpans and the granite represented by 4 in the ratio is taken as eight headpans.
Going by this knowledge it is easy for us to do a calculation of materials needed for blinding a plot of land 18m x36m(60 x120ft).
To do this calculation add the sum of the ratio 1+2+4= 7.
The total length of the plot is 104.4m
Normal thickness for blinding ranges from 50mm(0.05m)-100mm(0.1m)on level ground but may vary on a sloppy land, the width of the excavation is 675mm= 0.675m
Therefore total volume of concrete required for blinding = 104.4m x0.1m x0.675m = 7.1 cubic metres
Now divide 7.1cubic metres by the sum ratio which is 7, 7.1/7= 1.01
Taking a constant, the volume of a bag of cement is 0.035 cubic metres ,
Divide 1.01/ 0.035 = 29bags of cement is needed for blinding a plot of land.
One bag of cement is 2,700 naira,
Cost of cement is 2,700 naira x 29 = 78,300 naira.
For the sand required multiply 1.01 by 2 to know the volume since the ratio is 1:2:4
Therefore volume of sand required is = 1.01x2 = 2.02 cubic metres.
If we take the volume of a tipper as 3.8cubic metres then 2.02/3.8 = 1/2trip of 5tonnes tipper of sand, if one trip of sharp sand cost 15,000 naira then 1/2trip is 7,500 naira.
For the granite use the same ratio of 1bag of cement to 4 headpans of sand to 8headpans of granite.
Granite required is , multiply 1.01 by 4 = 4.04 cubic metres , to know the volume since it is in the ratio of 1:2:4
Volume of granite required = 4.04 / 3.8 = 1.07
That is one and half trips(11/2) of granite of 5tonnes tipper.
If one trip of 5tonnes of granite cost 30,000 naira then one and half trips will cost 45,000naira.
The labour cost for blinding varies but majorly it is 800naira per bag of cement and we have 29bags of cement , labour cost is =800 x29= 23,200 naira.
Total cost for blinding is 78,300+ 7,500 + 45,000 + 23,200 = 154,000 naira only.

4. Block Laying:
Laying of blocks is the next thing to do after you must have finish placing the concrete (blinding).
Most house owners ask this question, how many blocks do I need to get my fence/building completed?
We will be calculating the number of blocks that we are going to use to fence our plot
18 x36m(60 x120ft).
Let us have these in mind;
i) The length of a block is 0.45m or 450mm or 18inches
ii) The width of thickness varies - 150mm or 6inches and 225mm or 9inches which are commonly used.
iii) Taking for a general or average purpose the blocks laid from foundation of a fence to the top is 12coaches/courses(2coaches will be buried while 10coaches will be visible)
Now with these parameters, let's calculate the number of blocks needed for a 18 x36m plot of land.
Recall our total length to be 104.4metres
Divide the total length by 0.45m(length of a block) to know the numbers of blocks needed for one coach/level/course of block.
104.4m/0.45m = 232 blocks
Therefore 232blocks is needed for one coach/level/course.
Remember we have 12coaches of blocks for a fence , then multiply the number of blocks for each coach above by 12 = 232 x12 =2784blocks.
We will also need some blocks for the columns(pillars) , the spacing for the columns will be at 2700mm=2.7metres
We will divide the total length (104.4m)by the column spacing (2.7m)to get the number of columns
104.4/2.7 = 39columns
There are 39 columns in a plot of 18m x36m, each column will take 1 block x 12coaches =
12 blocks for one column
Number of blocks for 39columns is 39 x12 = 468blocks.
Total number of blocks needed to fence a plot = 2784 +468= 3,252blocks +325(10% waste )
= 3577 blocks
A block sells for an average of 200naira
Cost of blocks is 3577 blocks x 200= 715,400naira
Cement needed is 3577 blocks divided by 50
3577/50= 72 bags of cement @ 2,700 naira Per one = 194,400 naira
Cost of 72bags of cement is 194,400naira
For the sand required, 1 ton of sand will lay 120blocks, 3577blocks will need 30tonnes of sharp sand
1tonne of sharp sand is 3,000 naira
30 tonnes will cost = 90,000 naira only
Labour cost for laying a block is 60naira per block.
Cost of laying 3577blocks is 3577x60= 214,620naira
Total cost for block work =715,400 + 194,400 + 90,000 + 214,620= 1,214,420 naira.

5. Gate :
Get a gate to protect your property, cost of gate ranges from 100,000-1,000,000 naira only.
We also need to do the columns(two of them) that would hold the gate.
We need reinforcements, about 6lengths will do and they cost 3,000 each = 18,000 naira
We need 10nos of wood (1x12) and they cost 900 naira each= 9,000
We need 4bags of cement for the concrete of the columns = 2,700 x 4 = 10,800naira
Labour for reinforcements is 15,000 naira and labour for carpentry is 15,000naira
Labour for pouring the concrete is 3,000naira
Total cost for gate is 100,000 + 18,000 + 9,000 + 10,800 + 15,000 +15,000 + 3,000 = 170,800naira .


The Total cost for Fencing a standard plot of 18m x36m(60ft x120ft) is=Cost of Site clearing +Cost of Excavation + Cost of Blinding + Cost of Blocklaying + Cost of Gate and columns[pillars]
= 30,000 naira + 32,250naira + 154,000 naira +1,214,420 naira + 170,800naira
= 1,601,470naira .

The Total cost for Fencing a standard plot of land 18m x36m(60 x 120ft) on a dry land with 12coaches/courses is 1,601,470 naira only but can be reduced by reducing the number of coaches of blocks .

The Materials we just calculated for Fencing a plot is applicable on dry lands only but will differ when the plot is waterlogged, when the height of the fence is reduced, when the land is sloppy etc.

Flaghouse1:



Very formative and detailed write up, many thanks for your contribution to this elusive and critical stage in building construction .

However, I would suggest people see this as a guide in pricing and budgeting for the fencing of their property and not a "DIY" ticket ( Do it yourself) as fencing is a critical aspect or milestone in the building stage that needs not to be handled with levity but rather that should be handle by professionals and the. Commensurate professional or service fees paid accordingly

coinqueen:
Great Post!! Please can someone tell me the official rate for obtaining a fence permit per plot in Owerri? also what registrations are required after purchasing land in Owerri? thank you

segzy14:


Oya the oga in owerri, come to our rescue ooo.