Answer / punit

M means mix.
30 represents 28 days compressive strengh of concrete.

Answer / nilesh ghadge

M-30 IT MEANS THE COMPRESSIVE STRENTH OF THAT CONCRETE IS
30N/MM2 AT 28 DAYS

Answer / nikul prajapati

it is the grade of concrete.

Answer / sudhakar

M- stands for concrete mix
30- stands for compressive strength of concrete i.e. 30
N/mm2 after 28 days age of concrete

Answer / amit

m 30 represents the compressive strenth of concrte in mix
it denoted the 30 n/mm2 compressive strenth at the end of
28 days curig

Answer / rajkumar

m=mix design
30 is characteristics compressive strengths of concrete after 20 days of curing.

Factor of safety for steel should be based on its yield stress or its ultimate stress and factor of safety for concrete should be based on its ultimate stress or its yield stress?

2 Answers   NTPC,

How many jacks and props required for one floor, or tell me any thumbrule...to know the approx jacks and props required.?

1 Answers   Sumadhura Infracon,

What is unit weight of roadway layer.. 1.bitumen 2.sand 3.soil 4.concrete 5. aggregate give me some reference for this answers

0 Answers  

if in column reinforcement lower dia connect to higher dia then from wher we want to start higher dia steel

0 Answers  

What kind of soil has what bearin for pile work? eg sand with high water table collapses faster, black cotton soil is ideal, sand leads to more wear and tear of the boring consumables, rock takes longer and require rock augers etc etc

1 Answers   HCC,

Hi how r u ? hope you are fine there . Please can u tell me tha Design life of Buildings as Per ACI CODE 318-99. It will be a pleasure for me .Thanks in advance

2 Answers  

What is Niminal mix and Design Mix ? write difference between them ?

3 Answers  

hi i am kailash we construction start a slab load baring 40feet *9 feet *4 inch plz suggest matarials and qty

1 Answers  

why steel stirrups in column have more spacing at center and less spacing at both ends??

5 Answers  

Why we are using 150 mm X 150 mm X 150 mm cubes for testing the compressive strength of concrete in CTM and why not other sizes?

1 Answers   BARC,

What is the difference between yeild strength and compressive strength of steel???

0 Answers   Simplex,

Please give me the mixing ratio for higher grades of concrete (M30, M35, M40, M45, M50) using cement, VSI sand (Maharashtra) and metal. In case any other additives are supposed to be added to my concrete please let me know about that as well.

1 Answers   Core Consultants,