what is 20 mm dia equivalent reinforcement in column with 25 mm dia 3nos and 32 mm dia 3 nos?

what is 20 mm dia equivalent reinforcement in column with 25 mm dia 3nos and 32 mm dia 3 nos?..

Answer / mustafa mohammed layeak

1. Area of 20mm bar is 314mm^2, for 25mm bar is 491 mm^2 and for 32mm bar is 804 mm^2.
2. For a column with 3nos 25mm and 3nos 32mm the total area of steel is = (3*491)+(3*804) = 1473+2412 = 3885 mm^2.
3. Therefore number of 20mm bars required will be = Ast/Abar = 3885/314 = 12.37
Therefore provide 14 nos 20mm dia bars.

Is This Answer Correct ?    2 Yes 0 No

Post New Answer

More Civil Engineering Interview Questions

sir what is the mean of WBM

2 Answers  

how gradation of aggregates effect on slump of fresh concrete?

0 Answers  

does the compressive strength of brick be more then 3.5 n/mm2 or 5 n/mm2?

3 Answers   Modi Builders, L&T,

What is Well Point System in Dewatering

3 Answers  

how much tempareture are required to make liquid state of pid leed

0 Answers   IVRCL,

Types of column foundation and how to calculate its steel quantity.

0 Answers  

What is the standard volume of pharma in cub ft

0 Answers   Deepa Constructions,

how many reputations of ply wood for concrete works can be used?

3 Answers  

What are causes of cracks in outside plaster of a building and how we prevent it during constructions?

6 Answers  

Whr should a joint be located in a beam if the provision of a joint is unavoidable??

2 Answers   BMTC,

How to find out kg per Sft ?

0 Answers  

how much cement and sand required for 100sqm of wall plastering in different proportions

0 Answers   Bharti, Pvr Constructions,

  • Civil Engineering Interview Questions Civil Engineering (4646)
  • Mechanical Engineering Interview Questions Mechanical Engineering (3704)
  • Electrical Engineering Interview Questions Electrical Engineering (15793)
  • Electronics Communications Interview Questions Electronics Communications (2638)
  • Chemical Engineering Interview Questions Chemical Engineering (762)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (79)
  • Bio Engineering Interview Questions Bio Engineering (30)
  • Metallurgy Interview Questions Metallurgy (95)
  • Industrial Engineering Interview Questions Industrial Engineering (199)
  • Instrumentation Interview Questions Instrumentation (2884)
  • Automobile Engineering Interview Questions Automobile Engineering (171)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (41)
  • Marine Engineering Interview Questions Marine Engineering (62)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Engineering AllOther Interview Questions Engineering AllOther (1336)