Lesson #5:
Kerbs / Curbs
CIE 122: Highway and Railroad Engineering
01 Define the meaning of Kerbs
What is Kerbs / Curbs?
Purpose of Kerbs / Curbs?
02 Define the types of Kerbs
Different Kinds of Kerbs / Curbs?
CONTENTS
01
What is a Kerb / Curb
A kerb is a vertical or sloping edge along a pavement or
shoulder that separates different types of traffic, such as
vehicles, bicycles, and pedestrians.
1.1
Purpose of a Kerb / Curb
•
Works as a barrier
•
Helps to provide road drainage
•
Help to prevent unnecessary traffic movements
•
Prevent accident
•
Prevents encroachment of parking
•
Provide separation between two adjacent lanes
•
Enhanced Aesthetic
02
Types of Curbs
1) Low or Mountable curbs
2) Semi-barrier type curbs
3) Barrier-type curbs
4) Submerged curbs
Low or Mountable curbs (Class I)
- To control traffic to stay within its lane.
- Height of 10 cm above the pavement
- It facilitates the driver to enter the area of the shoulder with less difficulty.
Semi-barrier type curbs (Class II)
- Prevents slow-moving or parked vehicles from encroaching on footpaths.
- They are typically 15cm in height
- Effective in preventing tire damage or damaging the kerb.
Barrier-type curbs (Class III)
- Provides a barrier for high-speed vehicles.
- Prevent vehicles from crossing into restricted zones (e.g., sidewalks, parks, or lawns.)
- Improves pedestrian safety and blocks water flow onto sidewalks.
Submerged curbs (Class IV)
- Provides lateral stability for rural pavements.
- Made from bricks or concrete blocks.
- Used in stormwater management systems.
2.1
Different Curbs Profiles
1) Half-battered kerb
2) Bull-nosed kerb
3) Splayed kerb
4) Square kerb
Half Battered Kerb
Bullnosed Kerb
Splayed Kerb
Squared Kerb
THANK YOU!
Quiz Time!
I. Identification
1) It indicates the boundary between the carriageway and the
shoulder.
2) Also known as Class II kerb.
II. Enumeration
3-6) Give the 4 different profiles of kerbs
7-10) Give the 4 different types of kerbs
11-13) Give at least 3 purpose of curbs
14-15) Give the 2 primary methods on constructing a curb
Answers!
I. Identification
1) Kerb(s) or Curb(s)
2) Semi-barrier type curb/kerb
II. Enumeration
3-6) Give the 4 different profiles of kerbs
7-10) Give the 4 different types of kerbs
11-13) Give at least 3 purpose of curbs
14-15) Give the 2 primary methods on constructing a curb