Growth pattern of towns Natural and Planned, Types of zoning and importance, various road networks(Grid iron pattern, shoe string development, Surveys for data collection, physical survey, social survey, economic survey, civic survey, Town aesthetics, landscape architecture, Rehabilitation of slum and urban renewal,

1. Transportation Engineering – II (Town Planning)
1/7/2018
Prof. S.K. Patil, www.skpatil.com 1
.
Course Learning Outcomes:
• At the end of this session, the student will be able to explain
use of various layouts in town planning
Layouts of Housing & Road Network

2. Prof. (Dr.) Sachin Kishor Patil
B.E. Civil, M.E. Civil Environmental Engineering, Ph.D. (IIT, Bombay)
❑ Professor & Head of Department
❑ Department of Civil Engineering
❑ AMGOI, Vathar, Kolhapur, MH, India.
1/7/2018
Prof. S.K. Patil, www.skpatil.com 2
Disclaimer and acknowledgment
The study material presented by Prof. S K Patil is licensed under
The study material presented herewith is web sourced made
available for community use under Creative Commons Attribution-
NonCommercial-ShareAlike 3.0 unported License.
If you feel the ownership of some of the content, I can acknowledge
or remove as the case may be. Permissions beyond the scope of this
license can be requested at www.skpatil.com

3. Traffic problem in cities
3
Traffic congestions – Disadvantages
 Increase in congestion leads to an increase in transport cost and a
decrease in economic productivity
 Congestion leads to a distorted land use pattern in the long run,
causing more serious transport problems in the future
 Transport problems discourage decentralization and re-distribution
of economic activities and population.
 Increase in traffic demand caused by the influx of 'migrants' hinders
the smooth implementation of urban transport development plans
 Insufficient 'space' available within the built up areas to allow large
scale urban transport improvement programs, thus hindering future
growth
 The lack of proper inter-modal coordination leads to increase in
transport cost as well as reduction in overall urban productivity
 Pollution
1/15/2018Prof.S.K.Patil,www.skpatil.com

4. Remedies for traffic problem
4
 Weightage roads
 One ways
 Special provision for car parking
 Terminal bus stops
 Mandatory provision of parking places at public places
 Awareness /education
 Enforce rules and regulation
 Speed restrictions
 Signals and symbols
 Provision of junctions
 Apply principle of segregation
1/15/2018Prof.S.K.Patil,www.skpatil.com

5. Principle of segregation of traffic
5
 Intermingling of traffic types
 Slow/Fast
 Highway/Local
 Segregation-Separation
 Place segregation
 Separating traffic by height e.g. Bridge
 Separation on same level by physical barriers
 Time segregation
 Imposing one ways in particular times
 Night entry for heavy haulers
1/15/2018Prof.S.K.Patil,www.skpatil.com

6. Housing Layouts/Road Networks
1/15/2018Prof.S.K.Patil,www.skpatil.com
6
Layout to benefits as variety, economy, convenience
 Neighborhood unit
 Grid Iron/ Rectangular
 Cul-de-sac
 Shoe-String development
Road layouts
 Arterial roads
 Bye Pass road
 Ring roads (outer-inner)
 Concentric and Radial system

7. Layouts - Grid Iron/ Rectangular
1/15/2018Prof.S.K.Patil,www.skpatil.com
7
 Roads at right angles
 Fixed layout (predictable)
 Suitable for flat terrain
Grid Iron network of roads
 Advantage
 Good speed
 Rectangular houses
 No land wastage, Max. use of space
 Disadvantage
 No shortcuts
 Costly in uneven terrain
 Accidents
 Monotonous

8. Neighborhood Unit Planning
1/15/2018Prof.S.K.Patil,www.skpatil.com
8
 Unity in diversity
 Principles of Neighborhood Unit Planning
 Size – Population units
 Boundaries – By periphery road
 Protective strips - Limits
 Internal roads – Traffic control
 Commerce units
 Community centers
 Facilities
 Amenities

9. Housing Layouts- Cul-de-sac Layout
1/15/2018Prof.S.K.Patil,www.skpatil.com
9
 Dead ends – suitable for small country
 Traffic control
 Length should not be more than 80-100 m
 Privacy maintained
 Peace, free from noise, Dust
 Minimum accidents
 Dead End road Network

10. Housing Layouts - Shoe-String development
1/15/2018Prof.S.K.Patil,www.skpatil.com
10
 Improved variety of cul-de-sac
 Shoe (encircle) ‘S’ shape
 No direct access to main road
 Advantage as same of cul-de-sac
 Privacy maintained
 Peace, free from noise, Dust
 Minimum accidents
 Shoe String road network

11. Arterial Road
1/15/2018Prof.S.K.Patil,www.skpatil.com
11
 Main linking roads
 Pass through city
 City limits capacity of transport
 Main purpose –
 to evacuate the transport
 Reduce Lag
 Width not less than 30 m

12. Road Layouts
12
Ring Road
1/15/2018Prof.S.K.Patil,www.skpatil.com
Bye pass Road

13. Circular and Radial (Spider Web) System
1/15/2018Prof.S.K.Patil,www.skpatil.com
13
 Advantage
 Direct access to HEART
 Traffic distribution
 Support natural/economic growth of town
 Disadvantage
 Trapezoidal shape of plots
 Not economical for
house construction