Answer / arastu

to calculate the weight of steel in field, we use:

W = (d*d/162) kg/m

where d= dia of bar in mm

this is formula u can drive from Density = (weight/volume)

density of steel = 7850kg/m3
volume of bar (1 m length) = 3.14/4*d*d*1

Answer / poovaraghavan

Reinforcement steels are available in various sizes from
8mm to 32mm dia. In order calculate the weight of those
reinforcement bars, there is a formula derived form the
unit weight of steel and the unit volume of the respective
steel bar. In this case you need to remember the unit
weight of steel and more over you need to make unit
conversions for the dia meter of the bar. Because commonly
the diameter of the reinforcement bar is mentioned in
millimeters and the unit weight of the steel (7850 kg/cu.m)
is mentioned in kg/cu.m.

Here, either you need to convert the dia of the bar to
meter or to convert the unit weight of steel to kg/cu.mm
(Kilogram / Cubic millimeter). To reduce this difficulty
and save our valuable time, here is a thumb rule. Also the
rule has been analised and proved here. you can check it
and use it.

Unit weight of the Bar = (Unit volume of the bar) * (Unit
weight of Steel)

= (3.14 * d * d /4) * 1 * (7850)
kg/m Where, d – in meters

= 6165.376 * d * d

= 0.00617
d^2
Where, d – in Millimeters

For a Thumb rule, we can write the above formula as 0.617 *
d^2 /100.

This will give you the weight of the bar in terms of kg/m.

In the above formula you just need to remember only 0.617
as a constant and you can substitute dia in Millimeter
itself. Finally don’t forget divide the answer by 100 as
described above.

Answer / mohd aleem

(d/18)^2x2

how much least count of levelling ?

5 Answers   NCC,

---

1. What is coefficient use for calculation of shuttering. 2. What is coefficient use for calculation of reinforcement in one cum of concrete.

0 Answers   Ramky,

---

i have a bar of 20 and 16, lap length is 48*dia of bar, what is the lap length here

8 Answers  

---

What is quantity of Cement and Sand required for the 1 cum brick masonry with 1:6 Ratio cement mortar.

2 Answers   RPP Infra Projects, SIL,

---

why top layer of block work shoud be full size if any cut block adjustable than another layer?

0 Answers  

---

how many bag of cement needed for concreting 14.93 m3 at the ratio of 1:4:6 and 1:5:6

1 Answers  

---

why we do pcc.?

6 Answers  

---

is concealed wiring a problem in fly ash brick wall?

0 Answers   Earthstone Infra,

---

Which ratio use for cement selery???

0 Answers   Engineering,

---

Define mirror?

0 Answers  

---

plz tell me max persantage of sand for every mix design by volume or weight.

3 Answers   L&T,

---

Which of the following countries is associated with the fighter plane 'Dassault Rafale' as its country of origin? A) Israel B) Italy C) France D) Germany

2 Answers   HPSSSB,

---