Wednesday, 25 December 2019

What is the Cost of Fencing a Plot of Land - Complete Guide

What is the cost of fencing a plot of land


Today on this space, I will be answering the question "what is the cost of fencing a plot of land in Nigeria". I'm doing this cos even though I've written so much about calculating the number of blocks required to fence a plot, an intending landlord also needs to know the cost of fencing which includes the cost of blocks, cost for cement and the amount set aside for workmen on site.


Well, before we proceed, I'll like to make a few things clear.

1. Plot of land measures 30.48m x 15.24m
2. We shall be using 5 inch sandcrete blocks
3. We're assuming the terrain is dry and normal soil (not swampy soil)
4. We're installing Sandcrete columns @6 blocks apart
5. Height of Wall is 12 blocks 
6. We're adopting the strip foundation for this project
7. Depth of Foundation is 450mm (1.6ft)
8. Foundation concrete is 4 inches (100mm)

And so let's proceed to the calculation for blocks


How to calculate Position of Columns in Fencing Project

In order to understand how to place columns in a fence project, please pay close attention to thus section of the post 

As we know, one of the functional requirements of a fence is to stand firm in order to resist internal and external forces which includes earth vibration as a result of settlement, vibration from vehicular traffic, etc

For this reason, we've adopted the pillar at 6 blocks apart fence. This means that while there will be a pillar at every 0m mark, another pillar comes 6 blocks after the initial pillar.

That being the case, we shall obtain the length of each pillar by multiply the length of each block (0.45m) and multiply by 6(number of blocks from pillar A to pillar B)

Thus, 6 x 0.450 = 2700mm or 2.7m

This means there must be a pillar at every 2.7 meters

Now let's determine how many pillars on each line of the plot. Remember our plot of land has 4 lines

Let's call them Lines A - B, B - C, C - D and finally lines D - A

Now for lines A - B, which measures  15.24 meters, we will be having;

15.24/2.7 => 5.64 pillars so we assume 6 pillars

For limes B - C which measures 30.48 meters, we have

30.48/2.7 => 11.28 pillars. Let's leave it at that since 2 can't be approximated. 

Now since the other lines - C -D and D - A are of same dimensions, we simply ignore them but bear in mind whatever pillars we got from above, must apply to the other lines.

How many Blocks Is required to Fence a plot of land?


First, let's calculate the block required for pillars...

Remember we have 6 pillars on the 50ft side of the plot?
Also remember there are 2 lines with 50ft dimension so let's obtain the number of blocks that will be required to install pillars on these first

There are usually 3 blocks in 1 course of sandcrete pillars.

So we have 

3 blocks x 6 pillars x 12 courses and this gives us 216 blocks for one side.

But we have 2 sides

So 216 x 2 gives us 432 blocks

We will need 432 blocks to install pillars on 50ft sides of our fence

For the 100ft side, we have 11.28 pillars

Let's obtain the number of blocks required to install pillars on both sides

As established, we have 3 blocks for each course of our pillar, there are 11.28 pillars, and these pillars are 12 blocks high

So we have 

3x11.28x12 = 406 blocks

Now we have 2 sides measuring 100ft or 30.48 meters

Therefore, we have 2 x 406 blocks giving us 812 blocks

Now this means we need 812 + 432 (1244 Blocks to install pillars on our plot of land)

What about the walls?

On the 15.28 Meter side, we have 5 partitions...

Each partition requires 6 blocks and these must attain 12 blocks high

Thus, 5 x 6 x 12 = 360 blocks on each side

Since we have 2 sides measuring 15.24 Meters, we multiply 360 by 2 to give us 720 blocks.

What about the 30.48 meter side?

We have

11.28 partitions x 6 x 12 = 812 blocks

Multiply 812 by 2, we have 1624 blocks

Therefore, we need 720 + 1624 (2344 blocks) to fill up the spaces.

In total, we require 2344 + 1244  => 3588 blocks to install our fence completely 

What about the cement to bond the blocks?

We are able to bond 70 blocks from every bag of cement, this means we need

3588/70 = 52 bags of cement to Bond our fence completely.

This has answered just a part of the question "What is the cost of fencing a plot of land in Nigeria", there are other parts that won't be on this post. These parts includes:

The cost for  foundation concrete?

What about the Sand required?

What about the Cost of Workmanship?

Well, I need to be sure this post serves is purpose before I proceed to upload content for the other questions that follows.

Just comment after reading this and I shall upload the rest in another post!

I hope this served you well?

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