SOME BASIC CIVIL ENGINEERING INFORMATION

 

CONCRETE GRADE

M5 = 1:5:10

M7.5=1:4:8

M10= 1:3:6

M15= 1:2:4

M20= 1:1.5:3

M25= 1:1:2 

M30 & above grade based on Design Mix

 

 

1 M LENGTH STEEL ROD I ITS VOLUME

V=(Pi/4) x Dia x DiaX L=(3.14/4)x D x D X 1 (for 1m length) 

 

Density of Steel=7850 kg/ cub meter 

Weight = Volume x Density=(3.14/4) x D x D X 

1x7850 (if D is in mm ) So = ((3.14/4) x D x D X 

1x7850)/(1000x1000) = Dodd/162.27

 

 

 

WEIGHT OF ROD PER METER LENGTH

DIA WEIGHT PER METER; (Formula=D^2/162)

 

6mm = 0.222Kg

8mm = 0.395 Kg 

10mm = 0.616 Kg 

12mm = 0.888 Kg 

16mm = 1.578 Kg 

20mm = 2.466 Kg

25mm = 3.853 Kg

32mm = 6.313 Kg 

40mm = 9.865 Kg 

 

1 cubic meter contains 500 bricks?

The Standard size of the 1st class brick is 190mm x 90mm x 90mm 

and motor joint should be 10mm thick 

So brick with motor=200 x 100 x 100. 

Volume of 1st class brick = 0.19 x 0.09 X 0.09 = 0.001539 cu.m 

Volume of 1st class brick with motor =0.2 x 0.1 x 0.1=0.002 cu.m 

No. on bricks per 1cu.m= 1/volume of1st class brick with mortor 

                                       =1/0.002 

                                       = 500 no’s of bricks

 

 

BRICK Propertise

Weight = 3.17 - 3.80 Kg 

Water absorption 12 to 15% 

Compressive strength = 36Kn/cm²

230mm Wall/m³ = 460 Bricks + 20Cft Sand + 66Kg Cement 

SSM 1:7/m³ = Slize 95 + Soiling 8 Cft +60.5 Kg 

Current = 1000 Watts = 1 Unit, 25Watt x 40Hr = 1Unit 

Sunshade = 65mm - 0.56 bag/m², 

                  = 90mm - 0.78 bag/m²

Tiles, Kotta, Marble - 0.33,,,