Oh, dude, you're really getting into the nitty-gritty here. So, technically, there are about 907 steel bars in one ton of 12mm diameter bars that are 12 meters long. But like, who's really counting, right? Just throw 'em in there and call it a day.
Use the formula for a cylinder to find out the volume. Then multiply the volume by the density of steel (about 7900 kg/m3 - but it may vary slightly depending on the type of steel).
gear with shaft dia40mm length 230 teeth 14 shaft dia 25mm width 6.5mm length 168mm
Dia X Dia X length X 7.8 / 1000000
.4017
apex=14.2-14.8
Over lap of steel bar is provided 60 times of dia of steel bar. For example (.5") dia steel bar overlap length is (30"). (.5x60=30")
Over lap of steel bar is provided 60 times of dia of steel bar. For example (.5") dia steel bar overlap length is (30"). (.5x60=30")
Use the formula for a cylinder to find out the volume. Then multiply the volume by the density of steel (about 7900 kg/m3 - but it may vary slightly depending on the type of steel).
Rolling Margin is the deviation of actual unit weight to that of Standard unit weight as per IS Standards. Rolling Margin is calculated as : Sectional weight = Weight of Steel Bars dia wise / length of the bars. As per IS Standards unit weight of the Bars is calculated as dia x dia / 162 Rolling Margin is deviation of actual sectional weight to that of IS Standard unit weight. Standard Rolling Margin for different dia reinforcement bars used for construction purposes: 8mm to 10mm +- 7% 12mm to 16mm +- 5% 20mm & Above +- 3%
to calculate the weight of diffrent dia bars is d2/162 D=dia of bar , and multiply into 2 times then divide it by 162
Development length is the length overlap of bars tied to extend the reinforcement length. is about 50 times the dia of bar is consider to safe.
Wt of 12 mm tor steel, length 2500 mm
1.58 kg
L/162*d2
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 These are standard unit weights based on the density of steel @ 7850 kg/m3
2.9876 kg/m is the weight of steel bar of 22 mm dia..and you use formula for other bars as d*d/162 Where d is a diameter of bar in mm.
The unit weight of steel is 7850kg per cubic meter, so the unit weight of different bars can be calculated by multiplying the volume of 1m length of bar with the unit weight of steel.It can also be calculated simply by dividing the square of the diameter of bar in mm by 162.Diameter of bar unit weight calculation.8 0.395kg/m w=8x8/16210 0.617kg/m w=10x10/16212 0.889kg/m w=12x12/16216 1.580kg/m w=16x16/16220 2.469kg/m w=20x20/16225 3.858kg/m w=25x25/162