HsLBroker:
The simplest way to calculate the numbers of blocks you need for your fence assume you are fencing a land of 120 ft by 60 ft a standard plot


The land in question is 120 ft length and since we have two length that is multiply by 2 which is 240 ft

the breadth is 60 ft and also since we have 2 breadth that equal 120 ft plus 240 that is 320 ft perimeter line fencing.

the calculation

(we are to convert this 320 ft to inches) since a foot is 12 inches, now let us multiply 12 inches x 320 ft which is 3840 inches, so now to get the line numbers of blocks that will go around this perimeters of 3840 inches which is still 320 ft, we would need to divide 3840 by 18 inches is the length of any block be it 6 inches or 9 inches now 3840 inches divide by 18 inches is approximately 214 line of blocks, then will must multiply that by the numbers of coaches of blocks you want for your height, assuming 7 ft which is 9 coaches that means 214 multiply by 9 which is 1926 blocks and that is all you need anything aside from this is fake and fraud, this calculation is derive by me professionally and i have been using it without any mistake, but always remember to add 10 percent of blocks to it because of broken blocks, and for this work, you only need 27 bags of cements, one bag of cement to 70 blocks is standard.

for your pillars between the fencing, let assume 6 blocks apart before the next pillar, that means 6 divide by 214 which is 35 pillars, 1 bag of cement to 2 pillars standard, that is 17 bags plus 27 bags that is 44 bags is need by me to do this fence, if i'm in position and you should also to add 15 bags for floor blinding of the fence making 59 bags of cement.

Thanks for the opportunity to giving to explain this simple arithmetic.

Regards
Adeniyi
Life Light Properties

segzy14:


observation please, 120ft plus 240ft=360 ft
360ft x12 inches= 4320 inches/18inches= 240 lines of blocks
240 x 9 coaches=2160 blocks
as for the cement it is 2160/60=36 bags for 6 inches while
for 9 inches it is 2160/50=43 bags of cement for 9 inches.
please cross check, i stand to be corrected.

braine:
Wow. Nice! One can't get this simple analysis for free. Thank you!

mufutau55:
Very good and concise write-up by Mr. HsLBroker.
Nice summary and corrections made by Engineer Segzy14.
I hail both of you for contributing immensely to this forum.
Thank you. Now if we can have it on Front page, it has been Politics lately.

Hajji M.

euromilion:
Nice one,but it seems you did not leave room gate,which could actually reduce the amount of blocks from one end of the 60s.


Good job though.

HsLBroker:
you are welcome Hajj, though the front page politics, but the thread will still read meanings to many nairalanders who are at the stage of fencing their land this week, this month or this year, many had been reap off without this kind of knowledge and many will be save from been reap off with this knowledge and they will appreciate nairaland for the update.

I publish this formular i derived basically for my self to make my clients understand because they love the simplicity of it and i believe nairalanders like it too because in less than 3 hours without been on frontage it already had 79 views even when it was later.

mufutau55:
Very good and concise write-up by Mr. HsLBroker.
Nice summary and corrections made by Engineer Segzy14.
I hail both of you for contributing immensely to this forum.
It will even be more helpful if you can tell us the tons of sand needed, and the bricklayer/help labor to set the blocks.
Thank you. Now if we can have it on Front page, it has been Politics lately.

Hajji M.

euromilion:
Nice one,but it seems you did not leave room gate,which could actually reduce the amount of blocks from one end of the 60s.


Good job though.

segzy14:

for the bricklayers fee it is 2160 blocks x 50 naira/block = 108,000 naira.
it all depends on your bargaining power it can be 45-50 naira per block.

segzy14:

as for me there is no need to leave room for the gate since i didnt add the percentage for breakages.
i mean i was supposed to add some percentages for breakages, since i did not add it,that is why i didnt leave room for gate to compensate for it.

mufutau55:


It makes real sense.. compensate the 10% breakage for the gate space...

Hajji M.

tunad4rari:
how many trip of sand and gravel is required for this fencing and the amount to excavate the foundation

segzy14:


for the bricklayers fee it is 2160 blocks x 50 naira/block = 108,000 naira.
it all depends on your bargaining power it can be 45-50 naira per block.

Dieumerci:


Engr Segzy14, does this rate also apply to the normal laying of blocks in a house.

HsLBroker:
The simplest way to calculate the numbers of blocks you need for your fence project, assuming you are fencing a land measuring 120 feet by 60 ft, a standard plot

This calculation is based on 9 inches block fence .
The measurement we are using is 120 ft (length) and since we have two lengths that is multiply by 2 which is 240 ft. (120 x 2) = 240

The breadth is 60 ft and also since we have 2 breadths that equal 120 ft (60 x 2) = 120
Then (240 + 120) that is 360 feet perimeter line fencing.

The calculation

(we are to convert this 360 feet to inches ) since a foot is 12 inches , now let us multiply 12 inches by 360 ft which is 4320 inches.

Now to get the line numbers of blocks that will go around the fence perimeters of 4320 inches or 360 feet, we would need to divide 4320 by 18 inches, since the length of any block be it 6 inches or 9 inches is 18inches.

Now 4320 inches divide by 18 inches is approximately 240 line of blocks , then we must multiply that by the numbers of coaches of blocks you want for your height, assuming 7 ft which is 9 coaches that means 240 multiply by 9 which is 2160 blocks and that is all you need anything aside from this is fake and fraud, this calculation is derive by me professionally and i have been using it without any mistake, but always remember to add 10 % of blocks to it because of broken blocks, and for this work, you only need 30 bags of cements, one bag of cement to 70 blocks, is standard.

for your pillars between the fence, let assume 6 blocks far from the next pillar, that means 6 divide by 240 which is 40 pillars, 1 bag of cement to 2 pillars standard, that is 17 bags plus 40 bags that is 47 bags is need by me to do this fence, if i'm in position and you should also to add 15 bags for floor blinding of the fence making 62 bags of cement.

Then, we need to minus the gate and the pillars that are also taking space in the fence.

The gate is 12 ft, let us assume the gate columns or pillars is 14 inches each, we have 2 pillars holding the gate, that is 28 inches or 2. 4 feet plus 12 feet that is 14.4 feet or approximately 15 feet.

Remember we already calculate the pillars that 40 pillars is need for the measurement.

Each pillar or column for 9 inches concrete is 9 inches square, 9 x 40 = 360 inches that is (30 feet + 15 feet = 45 feet ) / 18 inches = 30 blocks multiply by the number of coaches, 30 x 9 = 270 block minus 2160 blocks = 1890 blocks in total.

40 lengths of 12mm iron rod, since one pillar is equivalent to 1 length.

3 lengths of 16mm iron rod for the 2 big pillars holding the gate.

90 planks of soft wood for the framing.

1 truck of granite (granite would be use for the wall foundation and columns)

5 trucks of sharp sand

Thanks for the opportunity giving me to explain this simple arithmetic.

Regards
Adeniyi
Life Light Properties
08088574969, 08182481552
lifelightproperties@gmail.com

Beingunique:


what is the height of the fence sir?

HsLBroker:
The simplest way to calculate the numbers of blocks you need for your fence project, assuming you are fencing a land measuring 120 feet by 60 ft, a standard plot

This calculation is based on 9 inches block fence .
The measurement we are using is 120 ft (length) and since we have two lengths that is multiply by 2 which is 240 ft. (120 x 2) = 240




The breadth is 60 ft and also since we have 2 breadths that equal 120 ft (60 x 2) = 120
Then (240 + 120) that is 360 feet perimeter line fencing.

The calculation

(we are to convert this 360 feet to inches ) since a foot is 12 inches , now let us multiply 12 inches by 360 ft which is 4320 inches.

Now to get the line numbers of blocks that will go around the fence perimeters of 4320 inches or 360 feet, we would need to divide 4320 by 18 inches, since the length of any block be it 6 inches or 9 inches is 18inches.

Now 4320 inches divide by 18 inches is approximately 240 line of blocks , then we must multiply that by the numbers of coaches of blocks you want for your height, assuming 7 ft which is 9 coaches that means 240 multiply by 9 which is 2160 blocks and that is all you need anything aside from this is fake and fraud, this calculation is derive by me professionally and i have been using it without any mistake, but always remember to add 10 % of blocks to it because of broken blocks, and for this work, you only need 30 bags of cements, one bag of cement to 70 blocks, is standard.

for your pillars between the fence, let assume 6 blocks far from the next pillar, that means 6 divide by 240 which is 40 pillars, 1 bag of cement to 2 pillars standard, that is 17 bags plus 40 bags that is 47 bags is need by me to do this fence, if i'm in position and you should also to add 15 bags for floor blinding of the fence making 62 bags of cement.

Then, we need to minus the gate and the pillars that are also taking space in the fence.

The gate is 12 ft, let us assume the gate columns or pillars is 14 inches each, we have 2 pillars holding the gate, that is 28 inches or 2. 4 feet plus 12 feet that is 14.4 feet or approximately 15 feet.

Remember we already calculate the pillars that 40 pillars is need for the measurement.

Each pillar or column for 9 inches concrete is 9 inches square, 9 x 40 = 360 inches that is (30 feet + 15 feet = 45 feet ) / 18 inches = 30 blocks multiply by the number of coaches, 30 x 9 = 270 block minus 2160 blocks = 1890 blocks in total.

40 lengths of 12mm iron rod, since one pillar is equivalent to 1 length.

3 lengths of 16mm iron rod for the 2 big pillars holding the gate.

90 planks of soft wood for the framing.

1 truck of granite (granite would be use for the wall foundation and columns)

5 trucks of sharp sand

Thanks for the opportunity giving me to explain this simple arithmetic.

Regards
Adeniyi
Life Light Properties
08088574969, 08182481552
lifelightproperties@gmail.com

marygold:
Did you say 1bag of cement to 70blocks?