Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 1 (Q.No. 4)
4.
On sag (or valley) curves the available sight distance is determined based on :
Discussion:
34 comments Page 2 of 4.
Kunjita dashore said:
9 years ago
Option D is correct. On the basis of night Time driving conditions on valley curve available sight distance is determined.
Dheeraj said:
9 years ago
Yes, Option D is the correct answer.
Asaithambi said:
9 years ago
Normally design sag or valley curve IRC considering driver observing the 15cm height of objectives.
Suresh said:
9 years ago
D is the correct answer. I too agree.
Sagar said:
8 years ago
Sight distance depends upon height of the headlight i.e. 0.75m in turn is used only in nighttime driving condition.
Duraisamy said:
8 years ago
Option D is Wrong because road alignment is considered into height of driver.
M.suna said:
8 years ago
Answer c should be correct. Because according to the relation L= NS2/2h+2stan (α).
Alpha should be always 1 as per IRC. So hear, if we find out "h" i.e. height of the driver then we can get SSD easily.
Alpha should be always 1 as per IRC. So hear, if we find out "h" i.e. height of the driver then we can get SSD easily.
Naveen said:
8 years ago
It has to be Head Light Sight Distance i.e. Option D.
Ismail said:
8 years ago
The valley curve should be designed such that there is enough headlight sight distance. Improperly designed valley curves result in extreme riding discomfort as well as accident risks, especially at nights. The length of valley curve for various cases was also explained in the section. The concept of Valley curve is used in underpasses.
Roy said:
8 years ago
Yes, it's D.
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