What is the unit weight of 28 mm dia rebar?

Answer 1

Hmm lets see. Volume of cylinder * denisty of steel. I hope you want metric.

1. convert mm to m for ease of use. 16 mm = 0.016 m

2. length equals 1 m

3. density of steel varies a little but 7850 kg/m3 should be good

4. volume equals PI*R^2*L = 3.14*0.008m^2*1= 0.00020096 m3

5. weight equals density * volume = 0.00020096 * 7850 = 1.577536 kg/m

Answer 2

I have a method to unit weights of tor steel bars,

28mm Diameter- 4.835kg/m

it does not matter size of bar,

if bars diameter say X

then square it, X2

then divide by 162.163,

X2

162.163

Example , 28mm

282

162.163 (162.162162162- 162 recurring decimal)/162.162 bar

=4.834641688kg/m

approximate to 3 decimal

=4.835kg/m

try other examples,for 8mm, 10mm,12mm,16mm,20mm,24mm

u will answer 8mm dia : 0.395 kg/m ,10mm dia : 0.617 kg/m ,12mm dia : 0.888 kg/m ,16mm dia : 1.579 kg/m ,20mm dia : 2.467 kg/m ,25mm dia : 3.855 kg/m respectively.

contact me on kmshiron@gmail.com if any one got doubt .

Answer 3

4.83 kg/m