Answer / senthil

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%

Answer / abhijit sane

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.
The size of the die is kept small and as a result rolling
margin is negative in the initial stage of production,
there after it is more of less close to theoretical weight
and then the size of die increases which results in rolling
margin on positive side.
If you purchase steel from same supplier over a period of
time the rolling margin would be adjusted and you are not
at a loss.

Answer / ravinder kumar

Rolling margin ,it means that difference between actual weight of steel & theoritical weight of steel as per as IScode

Answer / shafqat hayat

Rolling Margin of Reinforcement is Minimal additional Weight of steel due to lugs on the actual steel bar (which we call deformed steel bars). Lugs

how to calculate the steel quantity for beams & columns also footing net? what is the formulae for calculate the steel quantity? what is mean by (100.3)plinth level?what is mean by 100.3? explained it?

3 Answers  

---

How should we design a brick column and footing?(note: no reiforcement to be provided) Can you tell me any reference book where i could possibly find this design? Plz help urgently

0 Answers  

---

what is the life span of water proffing plywood for concreteshuttering work

3 Answers   Fusion, IVRCL,

---

Does vetrified tiles needs to be cure before fixing?

2 Answers  

---

what is the percentage of tolerance in the steel bars

1 Answers   Sunset Real Estate,

---

---

how should i calculate the concrete volume in a circular RCC wall ? what is the formula pls add diagram link for explaing

1 Answers   Private,

---

what is rolling margin of steel

1 Answers   Tata Projects,

---

What are the RISKS during the project construction?

0 Answers  

---

what is penetration test?why it is done?

1 Answers  

---

I want to know how much the lapping length for the pilecap reinforcement.. we r using single pile cap which is 24mby54m and 2.5m depth.. total 91piles are supporting the pile cap.. how to do a steel reinforcement??

0 Answers  

---

What is the ratio of Grades M10,M15,M20,M25,M30,M35,M40.

69 Answers   Ashoka Distillers and Chemicals, ATS, Bajaj, Black Stone, Concor, CTM, Gaurav Constructions, HARIOM TMT, Indian Steel, IT Systems, IVRCL, L&T, MB, RCS, Sandhya Constructions, SCSVMV, Shree Cement, Shyam Group, SK, Student, Synfra, UltraTech, UPCL, URC Construction, vvip,

---

which one is economical construction brick masonry or sold block masonry?

3 Answers  

---