Calcolatrice Peso Acciaio Gratuita
Calcola il peso dei tondini d'acciaio.
Peso Totale
88.8 kg
Total Weight vs Bar Diameter
Formula
Steel Bar Weight Calculation
Steel weight is calculated from the cross-sectional area, length, and density.
Formula
Weight per metre = (pi/4) x D^2 x rho
where D is the bar diameter in metres and rho is steel density (7850 kg/m^3).
Quick Formula
Weight (kg/m) = D^2 / 162 (where D is in mm)
This handy shortcut comes from simplifying pi/4 x (D/1000)^2 x 7850.
Esempio Risolto
100 metres of 12 mm diameter rebar.
- 01Weight per metre = pi/4 x (0.012)^2 x 7850 = 0.888 kg/m
- 02Quick check: 12^2 / 162 = 144/162 = 0.889 kg/m
- 03Total weight = 0.888 x 100 = 88.8 kg
Domande Frequenti
What are standard rebar sizes?
Metric: 6, 8, 10, 12, 16, 20, 25, 32, 40 mm. US/Imperial: #3 (10mm), #4 (13mm), #5 (16mm), #6 (19mm), #7 (22mm), #8 (25mm), #9 (29mm), #10 (32mm), #11 (36mm).
How do I calculate the number of bars?
Total length = number of bars x bar length + lap splice allowances. Add 10-15% for waste, bends, laps, and cutting losses.
Does this formula work for other steel shapes?
For round bars, yes. For structural sections (I-beams, channels), use the weight per metre from manufacturer tables, as the cross-section is not a simple circle.
Impara