podosci:
BRACE ESTIMATION

We have 29number of bracs
We have agreed to use 2 number of 9inch block has brace, placed perpendicularly to the block wall....
We have 11 coarse of block
Each course would has 2 blocks for brace
number of blocks for one brace = 2 x 11
=22 blocks
Total number of blocks required for 29 brace =
=29 x 22
= 638 Blocks

Total number of Blocks
required for the fence = number of blocks for blockwall +number of blocks for brace
= 2035+ 638
= 2673
NOTE: Motar joint was not included in my estimation of height because eavh motor joint is 10mm which would be infinitesimal when compared to the whole
We would require 2673 blocks to fence the site based on the already stated parameters

msogunro:


How deep should the blocks be below the ground? 1 coach? 2 coach?

msogunro:


@ podosci, Please check your email again.

podosci:
FOUNDATION

EXCAVATION
The excavation of the site is billed per meter along the perimeter of the site. The perimeter of the fence is estimated to be 87m ( the length of the gate was subtracted from the perimeter of the whole site to arrive at this figure)
The labourers charge between 500-600 naira per meter depending on location. For Awka they charge 600naira
The Total cost of the excavation = 500 x 87
= 52,200 naira
CONCREATE WORK
Concrete is a building material made form the mixture cement, fine aggregate (sand), course aggregate ( gravel) in a mixing medium (water). The various constituent are mixed in a specified ratio. 1 (cement );2 ( sand) ;4 (Gravel) is the mix ratio for this job
The volume of the concrete is estimated by multiplying the length of our RC beam(Perimeter of the fence) X the Depth of the beam X the breath of the beam
Volume of concrete = 87 x 0.225 x 0.5
=9.79m3
The value obtained has to be increased by 25% to cater for concrete shrinkage and wastage during casting
Actual volume of concrete = 1.25 x 9.79
=12.24m3
Cement
The volume of cement required to mix 12.24m3 of concrete is obtained from the specified ratio 1;2;4
Volume of cement = 12.24 (volume of concrete) x 1 ( ratio of cement in the mixture) / 7 ( total ratio of the constituent concrete materials)
= 12.24 x 1/7
= 1.74 m3
The volume of cement we just obtained has to be converted into a unit you can use to purchase cement from your local supplier( They supplier in 50kg bags of cement)
There is a mathematical relationship between density, volume and mass
where Density = mass/ volume
And the density of cement has been obtained through laboratory experiment to be 1506kg/m3
therefore Mass = Density x Volume
= 1506 x 1.74
= 2620kg
A bag of cement is 50kg
Total number of bags required = 2620/50
=53 bags of cement

joseph1013:

Learning here. And how in simple English it is.

You calculated for concrete and cement here, what about the calculations for the sand and granite?

NB: I checked online now and found out that some are giving the density of one portland cement as 1440kg/m3, not 1506. Please clarify.

Saeeeth:


What's the overall cost of the foundation ?

joseph1013:

Learning here. And how in simple English it is.

You calculated for concrete and cement here, what about the calculations for the sand and granite?

NB: I checked online now and found out that some are giving the density of one portland cement as 1440kg/m3, not 1506. Please clarify.