How do we get this formula Ast=(0.5Fck/Fy) into(1-(in sqrt(1-((4.6Mu)/Fck.bd^2))into bd
Fck=grade of cement i.e M25, M20
Fy=grade of steel i.e.Fe415,Fe250
Mu=moment
b=width
d=depth
Answer Posted / madan
M.R = 0.87 fy Ast d[1-(fyAst)/(fckbd)]
Use this formula to calculate Ast . Or u can generally solve this formula to get the equation in your question.
M.R=Moment of Resistance
Other notations are as usual.
| Is This Answer Correct ? | 12 Yes | 6 No |
Post New Answer View All Answers
In Rcc ratio calculation I wanted to know quantity of Steel also.
The portion of a brick cut across the width is called?
what is labour consume factor in residential projects
factory shed foundation l=4, b=3' d=8' rcc foudation for top to bottom pl tell me cement ,steel ,sand ,labour cost ,excavtion,soil is weak not so hard
400 ku d/c clearess ketan hota hai?
Mention what are the composition of a landfill?
How to find the cuplock pipe qty in staging for Minor bridge?
How does siphoning work?
Pile height is 4.3m. 2nos. under reammer. bulb nose is 75mm and height is 400mm. pile dia is 375mm and overall dia 940mm.pls. help to calculate concrete in pile and bulbs separately. What is formula for bulb volume calculation ?
residential projects,structural.
What is a hatch patterns?
The properties of concrete HA-30 and how does it differ with M 30 (specify the important characteristics like workability,strength,mix design,slump test value)and what is the standard relating to it
what is meant by csr in foundation? what is sbc?what is meant by contour line?
What is the primary difference between adsorption and absorption?
Dear Frds, How can i calculate the Steel for RCC Slab, Please provide one Example also, so that i can understand very well. Ex: Area: 1320.0 Sft.(44' X 30') Span: 15'(Default). Column Size: 9"X15"(6 No.s 12mm Rods) Please Provide Calculation Details. Thankyou. Satish