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Sunday, December 4, 2016

Grades of Rust for Steel Structure

Dear Readers,
 
Rust is having important role to finalaise the surface preparation for steel structure before painting. Four Rust grades, designated A, B, C and D respectively, are specified. The rust grades  are defined as follows
 
Grade-A : It is mainly adhering mill scale, but little rust
Grade-B : It is rusting and flaking of mill scale has begun
Grade-C : The mill scale is rushing away, with slight pitting
Grade-D : The mill scale has rusted away, with general pitting
 
Rust Grade photographs are as follows

GRADE-A
 
Steel Surface largely covered with adhering mill scale but little, if any, rust.
 
 
  
 
 
 
 
 
GRADE-B
 
Steel Surface which has begun to rust and form which the mill scale has begun to flake. 
 
 


 
 
 
GRADE-C
 
Steel Surface on which the mill scale has rusted away or from which it can be scraped, but with slight pitting visible under normal vision.
 
 
 

GRADE-D
Steel Surface on which the mill scale has rusted away and on which general pitting is visible under normal vision.
 
 
 
For More Details about Surface Preparation of Structural Steel Click Here
 

Sunday, November 6, 2016

Properties of ISLC


Dear Readers,

This is continuation with my earlier post unit weight of ISLC, self would like to post the sectional properties of ISLC.

Properties of beams are having two parts. One part is Physical dimensions and another part is sectional properties of Beam. Basically dimensional part contains depth and width of section, Thickness of Web and Flange and Root Radius. Where as sectional properties contains Moment of Inertia, Radius of Gyration and Section Modulus. These are useful for design engineers.

Click on picture to enlarge

For More Details about Sectional Properties Click Sectional
For More Details about  Steel Sections Click Steel
For More Details about Classification of Hot Rolled Steel Click IS 808

Best Quote :
Never Think Hard about PAST, It brings Tears...
Don't Think more about FUTURE, It
brings Fears...
Live this Moment with a Smile, It brings Cheers.!!!!

Sunday, October 16, 2016

Small Numbers

Dear Readers,

This is continuation with my earlier post of numbers and Big Numbers. All Small Numbers we know is below.

Name
As a Power of 10
As a Decimal
thousandths
10-3
0.001
millionths
10-6
0.000 001
billionths
10-9
0.000 000 001
trillionths
10-12
etc ...
quadrillionths
10-15

quintillionths
10-18

sextillionths
10-21

septillionths
10-24

octillionths
10-27

nonillionths
10-30

decillionths
10-33

undecillionths
10-36

duodecillionths
10-39

tredecillionths
10-42

quattuordecillionths
10-45

quindecillionths
10-48

sexdecillionths
10-51

septemdecillionths
10-54

octodecillionths
10-57

novemdecillionths
10-60

vigintillionths
10-63

 
For More Details about Numbers Click Here
For More Details about Big Numbers Click Here
 
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Hope ends when u stop believing
Love ends when u stop caring
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