What is Rolling Margin?

• Up to and including 10 mins: 4 mm to 10 mm dia of a bar, Individual weight of  Up and Down 8%, The Batch weight of  Up and Down 7%.
• Over 10 up to and including 16 mins: 12 mm dia bar to 16 mm dia bar reinforcement, individual weight of  Up and Down 6%, The Batch weight of  Up and Down 5%.
• Over 16 mins: 20 mm dia bar to 40mm dia bar reinforcement, individual weight of  Up and Down 4%, The Batch weight of  Up and Down 3%.

The Procedure of Rolling Margin

• All the above three sample take the induvial weight, Heter correct length because of cutting of reinforcement not perfect length (Example: 990 mm, 995 mm, 996 mm)
• So Convert in 1000mm length in weight Like 10 mm dia bar 990 length steel weight 0.598 kg, After converting 1000mm length steel weight 0.604 kg, all three weight fill in a block No. 8
• And block No. 9 actual weight of IS 1786, page- 5, table-1 consider
• Block No 10 is a difference between block no. 8 and block no. 9
• Here, Block no 11 is a negative all there sample average difference. Same as block no 12 positive block all three difference.

Why is Rolling Margin?

Rolling Margin

• Difference Between Carpet Area and Built-up Area
• Difference Between One Way Slab and Two Way Slab | What is Slab
• What Is a Field Dry Density Test | Different Type of Field Density Tests
• What Is Plaster | Plaster Ratio | History of Plastering | Requirements of Good Plaster
• What Is Glass Fiber Reinforced Gypsum | Applications of GFRG | Disadvantages of The GFRG Panel
• What Is Structural Settlement | Causes For Structural Settlement | What Is Soil Settlement & Foundation Structural Settlement