Admin Table of Contents
- 1 What is a rolling margin?
- 2 Why do we use rolling margin?
- 3 What is the weight of 10mm rod?
- 4 How do you adjust the rolling margin of steel?
- 5 What is the weight of 40 feet Steel bar?
- 6 How do you calculate bars per kg?
- 7 How do you calculate Rolling margin from sectional weight?
- 8 What is the Rolling margin of a die?
What is a rolling margin?
What is the rolling margin of steel? The allowable margin in the percentage deviation of the actual unit weight of a steel bar from its standard or theoretical unit weight is called the rolling margin of steel.
How do you calculate rolling margin of steel?
The Rolling Margin of steel is calculated as below, Total Weight of Bar (Diameter wise) / Total Running meter of Bars = Actual Sectional Weight of bars. Compare sectional weight with Standard IS Weight.
Why do we use rolling margin?
Rolling margin is the difference between the theoretical and actual weight of steel. This is because of the die which is used for casting of rebars. Over a period of time the shape of die changes and as a result, the diameter of the steel bar also changes which results in a difference in a unit weight of steel.
How do you get d2 162?
Take into consideration that the formula will provide the steel bar weight in kg/m. Multiply it by steel bar length (L) in order to find out the steel bar weight. Take into consideration that W = D2/162 kg/m is utilized when the bar length is specified in m.
What is the weight of 10mm rod?
Calculate the weight of the TMT rods in bundles as per size.
| TMT Size | TMT Rods Per Bundle | TMT Weight Per Bundle |
|---|---|---|
| 8mm (1 Bundle) | 10 | 47 Kg |
| 10mm (1 Bundle) | 7 | 53 Kg |
| 12mm (1 Bundle) | 5 | 53.4 Kg |
| 16mm (1 Bundle) | 3 | 56.88 Kg |
Is code for reinforcement steel rolling margin?
12mm to 16mm +/- 5%. 20mm and above +/-3%. Total Weight of Bars (Dia wise ) / Total Running Metre of Bars = Actual Sectional Weight of bars. Compare sectional weight with Standard IS Weight.
How do you adjust the rolling margin of steel?
Total Weight of Bars (Dia wise) / Total Running Metre of Bars = Actual Sectional Weight of bars. Compare sectional weight with Standard IS Weight. Weight as per IS Standard = Dia x Dia / 162. Rolling margin is the difference between the theoretical and actual weight of steel.
How do you calculate 162 steel?
Calculation Of The Formula D²L/162: The weight of steel bars= Cross sectional area of steel bar x Length of steel bar x Density of steel bar.
What is the weight of 40 feet Steel bar?
TMT rebars supplied in U bent or straight rods, length of the TMT bars are 40 feet or 12meter and TMT bar weight in kgs/m for 8mm or 2.5 sut (सूत) is 0.395kgs,10mm or 3 sut (सूत) is 0.617kgs,12mm or 4 sut (सूत) is 0.889kgs,16mm or 5 sut (सूत) is 1.580kgs, 20mm or 6 sut (सूत) is 2.469kgs and 25mm or 8 sut (सूत) is 3.852 …
How many pieces of 12mm rod makes a ton?
93 lengths of 12mm reinforcement bar makes 1 ton.
How do you calculate bars per kg?
Weight of bar in kg/meter should be calculated as (d2 ÷ 162) where’d’ is the diameter of bar in mm. ‘L’ for column main steel in footing should be considered as minimum 30cm/as specified. For bent up bar add 0.42d in straight length of bar where’d’ is the clear depth of beam/slab.
How much does a 12mm steel rod weight?
12mm rod weight:- 12mm rod supplied in U shaped bent or straight, a length of about 12 metres or 40 feet, generally 12mm rod weight around 10.667kg/ piece, 0.889kg/m or 0.270 kg/foot.
How do you calculate Rolling margin from sectional weight?
Compare sectional weight with Standard IS Weight. Weight as per IS Standard = Dia x Dia / 162. Rolling margin is the difference between the theoretical and actual weight of steel. This is because of the die which is used for casting of rebars.
What is the Rolling margin of a rebar?
Rolling margin is the difference between the theoretical and actual weight of steel. This is because of the die which is used for casting of rebars. Over a period of time the shape of die changes and as a result the diameter of the steel bar also changes which results in difference in unit weight of steel.
What is the Rolling margin of a die?
The size of the die is kept small, and as a result, the rolling margin is negative in the initial stage of production, there after it is more or less close to theoretical weight and then the size of die increases, which results in a rolling margin on the positive side. 1.
How do I calculate my margin percentage?
The margin percentage can be calculated as follows: Margin Percentage = (20,400 – 17,000)/20,400 = 16.67%. Using what you’ve learned from how to calculate your margin percentage, the next step is to download the free Pricing for Profit Inspection Guide.