dia 10mm longitudinal bar
dia 10mm longitudinal bar
(OP)
Can we use dia 10mm bar in the beam as a top and bottom reinforcement as per British Standard.My problem is I can only use either dia 10mm or dia 20mm for longitudinal reinforcement for continuous beam due to availability of reinforcement on site.Code is specific for column not to be used dia 10 but I am not sure about beam.please help






RE: dia 10mm longitudinal bar
In my experience, you can use 10 mm dia longitudinal bars, as long as you meet the minimum percentage requirement -- 0.13 percent.
RE: dia 10mm longitudinal bar
Thank you very much I have used dia 10mm as a top bar and hoping should be ok.
Thanks
RE: dia 10mm longitudinal bar
RE: dia 10mm longitudinal bar
As Hokie suggested, more info would be helpful.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: dia 10mm longitudinal bar
RE: dia 10mm longitudinal bar
RE: dia 10mm longitudinal bar
Of course you need to provide the amount of reinforcement required from bending considerations. I thought the question was once you know the amount of reinforcement you need, does it matter what dia bars are used to provide the area of reinforcement -- can it be as low as 10 mm?
My view is you can use as low as 10 mm. But you need to calculate the total amount you need and satisfy that. What that total amount is is a seperate question
RE: dia 10mm longitudinal bar
BA
RE: dia 10mm longitudinal bar
You are obviously in a position where adequate support is not available. Perhaps if you can give us your actual problem in the form of loads on the beam or the beam moments, we could give better advice. Minimum steel percentage is only part of the solution.
RE: dia 10mm longitudinal bar
BS8110 uses .13% as miimum reinforcement for rectangular sections. Unfortunately, it is not related to concrete strength as it should be. .13% is correct for about 20MPa concrete. For "real" concrete strengths used these days, it should be significantly higher.
But nothing seems to fall down in UK because of it!
RE: dia 10mm longitudinal bar
RE: dia 10mm longitudinal bar
Dik
RE: dia 10mm longitudinal bar
IMO , would not recommend it as main bars ,but if you have to, then do it and do not worry.
RE: dia 10mm longitudinal bar
cheers