Civil Engineering - Waste Water Engineering - Discussion
Discussion Forum : Waste Water Engineering - Section 1 (Q.No. 6)
6.
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is
Discussion:
29 comments Page 2 of 3.
Sandip ghosh said:
1 decade ago
But actually 1 in 105 for a velocity of 0.9m/s & 1 in 150 for a velocity of 0.75m/s.
Robin said:
7 years ago
Take V = 0.9 m/s,
R = D/4,
then, S will be equal to 1/118 which is close to 1/120.
R = D/4,
then, S will be equal to 1/118 which is close to 1/120.
Himajwala said:
8 years ago
I didn't understand which formula was used. Can anyone help me?
Ganesh said:
10 years ago
Which formula is used here to calculate self cleansing formula?
Praveen M N said:
6 years ago
NBO recommend for small sewers.
225 dia = 1:120 = 0.79 m/sec.
225 dia = 1:120 = 0.79 m/sec.
Sohail Khan said:
3 years ago
For 100 => 1 in 25.
For 150 => 1 in 65,
For 230 => 1 in 130.
For 150 => 1 in 65,
For 230 => 1 in 130.
(6)
Manohar said:
1 decade ago
Yes, the gradient, 1 in 105 is greater than 1 in 150.
S Lakshmikanth said:
2 years ago
100mm = 1 in 60.
150mm = 1 in 100.
225mm = 1 in 120.
150mm = 1 in 100.
225mm = 1 in 120.
(9)
Vaibhav gupta said:
8 years ago
Explain the expression for self-cleaning velocity.
Shree said:
6 years ago
Thank you all for explaining the answer.
(2)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers