Proof 100 cft =1350 no of brick --proof--

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Hye guys today topic is for bricks and every civil engineer know that 100 cft = 1350 no of bricks but Many of them does not know how it came from so let start the topic
As we know that
      100 cft = 1350 no,s of bricks
Volume of bricks
   9"×4.5"×3"
Let's convert into the feet
0.75*0.325*0.25
So it equal to = 0.0703 cft volume of each bricks
now we finding the volume of 100 cft without mortar
100/volume of each bricks
100/0.0703  =1422 .22 no of brick without mortar
now we find the volume of mortar in 100 cft which is 10 % of mortar volume
10/100 *1422 = 142.40 no of bricks
 now remove the mortar volume from the total number of bricks
1440-142 = 1280 no of bricks
now add the contingency rate which is 5 %
5/100 *1422 =71 No of bricks
no add the brick 1280 no of bricks
1280+71 =1351 no of bricks
so we say that 100 cft = 1350 no of bricks..



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