Question { 9622 }

how much aggregate need for 1:4:8 p.c.c in 1sqm area?

Answer

we calculate the concretein volume(cubm) not calculate from area(sqm).
in 1:4:8 PCC we use thickness 0.075Meter.
we know that in this ratio cement consumption will be 3.3 bags per cubic meter,
in one bags weight 50kg.
according to above we can calculate

Question { bscpl, 222985 }

what is water cement ratio m10,m15,m20,m25,m30,m35m ,m40

Answer

M10 (1:3:6) - (0.75%) 37 to 40 lit(Water),Cement - 215kgs
M15 (1:2:4) - (0.55%)27 to 30 lit(Water),Cement - 310kgs
M20 (1:1½:3)- (0.42%)20 to 24 lit(Water),Cement - 395kgs
M25 (1:1:2) - (0.3%)15 to 18 lit(Water),Cement - 560kgs

Question { 7590 }

How can find weight
fosmula in kg/m for
circular cylinde steel
bar?

Answer

0.6165539 x (dia)2 /100