Steel Industry

Volume of the bar x the density of the material.

can u explain it.Density=.00785

Angle bar size : width 40*40 Thikness=6mm For 6meter.Then how to calculate.

Expecting ur kind reply

Volume = area of crossection x length

Things can not be easier than this.

Density 0.00785 Unit?

(l₁ + l₂ - t)*t*ρ, where l₁ and l₂ are the leg dimensions, t the thickness, and ρ the density.

Thanks for ur reply.But through it i didn't get accurately,

For eg:60*60 mm(leg dimensions) 6mm=Thickness Density=.00785

Accurate value for above mentioned is per 6m=32.52

A slight difference is there while applying your eqn.

Expecting ur kind reply

That formula was for weight per unit of length, which would then be multiplied by the length to get the weight of the piece. (I apologize for not clarifying this.) Steel angles are rounded on the inside at the ends of the legs (slightly reducing the weight), and filleted on the inside corner (slightly increasing the weight). Thus the catalog weights will differ a bit from assuming that all corners are sharp (90°).

Yes ur right,and i know the given formula for per mtr,Dear since large qty production ,if small loss wt calculation per meter,will result huge loss as u know.

As mentioned i heared inner radius arc,outer radius arc .So it will be very help full for me if i get accurate eqn.

You may have a nice friend called Autocad. Just make an 1:1 scale drawing and from the closed shape you can get the crossection. No need to struggle with maths.

Dear Shahul,

1. Usually, the weight charts are referred by the engineers for calculations since adoption of standards of a country keeps the weight/length ratio within tolerable limits. moreover, there are light, medium, heavy and special types of structural members (angles, channels, beams, re-bars etc).

2. For calculations you remember that 1 cubic meter of structural steel = 7850 kg. and; 1 cubic centimeter structural steel = 7.850 grams approximately.

3.keep your calculations in meters or centimeters as per the size/bulk. If calculations of large sizes are made in gm/cu mm, you will face a lot of confusions during conversions. Same is true for very small sizes calculated in meters. Sometimes, you will doubt your ability on calculations on conversions and getting results.

This rounding off of steel density to 7850 kg/cu. m is in common practice in India and is accepted by all.

I will be happy if it helps.

Regards.