In this article, we will discuss
Calculation of TMT bar Weight | The calculation for the weight of a steel bar | How do you determine steel weight in kg | How do you evaluate steel weight in feet | Few important points about TMT Bar Weight
Calculation of TMT bar Weight
TMT bars are used a lot in construction, so their weight is one of the most important things to know. The exact formula for finding the mass of steel per square meter is D*D/162. In this formula, D is the bar's diameter (in meters) and its weight (in kilograms). Here, W is the bar's weight in kilograms, D is its diameter in millimetres, and L is its Length in meters.The calculation for the weight of a steel bar:
The weight of steel bars is calculated using the formula: Ï€D*2/ 4 × L × density.In the formula, w is the weight of the steel, which is 3.14; L is the Length of the steel bar, which is 1 meter; D is the diameter of the steel bar in millimetres, and D = 7850 kg/m3 is the density.
Calculation of TMT bar section weight:
- If we give each diameter of the steel bar a length of 1 meter in the formula, we will get the unit weight.
- 8 mm ø bar = 8² x 1/162 = 0.395 kg/m.
- 10mm ø bar = 10² x 1/162 = 0.617 kg/m.
- 12mm ø bar = 12² x 1/162 = 0.888 kg/m.
- 16mm ø bar = 16² x 1/162 = 1.580 kg/m.
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Illustration:
Weight of 13mm steel bar:
For example , diameter of steel = 13mm, length of 1 steel rod = 13 meter, after that weight of 1 piece of 13mm steel rod in kilogram = (13×13×13)/162 = 13.567 kg.Thus, the weight of 1 piece 13mm Steel rod is 13.567 kg.
How do you determine steel weight in kg?
The weight of the bar in kilograms per meter should be (d2 ÷162), where d is the diameter of the bar in millimetres.
"L" for column major steel in footing is supposed to be at least 30cm/as specified.
For a bent bar, add 0.42d to the straight Length of the bar, where d is the clear depth of the beam per slab.
How do you evaluate steel weight in feet?
- Is the formula to estimate the weight of steel bars in KG/feet?
- Thus, the weight of 10 mm bar shall be,
- (10 x 10) / 533 = 0.188 kg/feet.
- To be exact W= D2/533 it is.
- It is resulting from a very fundamental concept.
- Density of steel in terms of meter =7850 kg/m3> 7850/(1000X1000X1000) kg per mm.
Civil engineers and contracts usually say to buy TMT Bars by the piece, bundle, or tonne. The sizes also change based on how the building is made. For example, 10mm/12mm bars are needed for the main slab, 8mm/10mm for the distribution, and 16mm/12mm for the beam, depending on the span.
The most common way to figure out how much steel you need is to turn rods into bundles or kgs.
Few important points about TMT Bar Weight:
- The standard Length of rods is 12 meters.
- The tolerance of TMT Bars should follow IS guidelines, according to IS 1786:2008
- TMT bars produced in various diameters 8 mm | 10 mm | 12 mm | 16 mm | 20 mm | 25 mm | 28 mm | 32 mm
- TMT Bars You can talk about weight in Kilograms, Quintals, or Tons. 1 Quintal = 100 kgs | 1 Ton = 1000 kgs
Weight Tolerance:
- 8mm and 10mm: ± 7%
- 12mm to 16mm: ± 5%
- 20mm to 32mm: ± 3%
For example, the weight of an 8mm bundle can be anywhere from 44.09 kg to 50.73 kg.
Standard rod length: 12 meters.
To determine the weight of 1 TMT rod, the following formula is used:-
(dia * dia) / 162* 12 = weight of 1 TMT rod.
Dia denoes diameter in mm (8mm, 10mm, 12mm, 16mm, 20mm, 25mm or 32mm)
Adherence to IS:1786-2008 standard law provides tolerance.