Exercise 1-A | Explanation's | Questions based on SSD | Highway Engineering

Important points:

• If reaction time (t) is not given assume t = 2.5sec (as per Indian Standard).
• Value of ‘ g’ always = 9.81
• Friction co-efficient for varuious design speed:

Speed =	<20	40	50	60	65	80	>100
f =	.40	.38	.37	.36	.36	.35	.35

• Breaking Distance for Downhill or down Grade = (-x%)
• Breaking Distance for Uphill or up grade = (+x%)
• SSD for various lane & way are given as below:

Type of traffic	1-lane, 1-way	1-way, 2-way	2-lane, 2-way
SSD required		2xSSD	SSD

Exercise 1-A | Highway Engineering | Numerical Based on SSD

Exercise 1-A Highway Engineering | Engineer Ji | Highway Engineering Numerical's 

TIME: 5min/Question (Max)                                       Maximum Marks 5 x 10 

            

1)  Calculate the SSD for design speed of 60kmph for 2-lane, 2-way traffic.

• A 16.67m
• B 79.95m
• C 41.67m
• D 38.27m

2) Calculate minimum SSD to avoid had on collision of 2 cars approaching from opposite direction at a speed of 90kmph & 60kmph.

[assume t = 2.5sec]

• A 16.67m
• B 153.51m
• C 82.14m
• D 235.65m

i) Cross Sectional Elements | Geometric Design of Highway | engineer ji

It may be defined as "Design of visible features of highway"
(geometric design of highway)

Syllabus to cover: 

• Cross- Sectional Elements 
• Sight Distance 
• Horizontal Alignment 
• Vertical Alignment 

1) Cross- Sectional Elements:

History of Highway Engineering | Engineer Ji

In this article I am going to discuss the history of development of modern highways in India for JE Civil Exam (point of view). 
Because, we have already learnt about Highway & Airport Engineering so, there is no need to read again, read these important points only. 

Intro to Highway Engineering | Engineer Ji

Definition of Highway Engineering:

a branch of civil engineering dealing with the planning, location, design, construction, and maintenance of highways and with the regulations and control devices employed in highway traffic operations.

Basic Terms of Highway Engineering: