Two-laning of Highways
through
Public Private Partnership
MANUAL
OF
SPECIFICATIONS & STANDARDS
Planning Commission
Government of India
New Delhi
IRC:SP:73-2007
This is a technical document which has been produced by the Indian Roads Congress. For any further
technical clarifications please contact:
Secretary General
The Indian Roads Congress
Sector 6, R.K. Puram
New Delhi-110 022
Published by the Secretariat for the Committee on Infrastructure
Planning Commission
Yojana Bhavan
Parliament Street
New Delhi-110 001
Printed by Brijbasi Art Press Ltd.
A-81, Sector-5, Noida - 201 203
Reprint: May 2010.
Contents
Foreword
ix
Preface
xiii
List of Symbols and Abbreviations
xvi
1
General
3
2
Geometric Design and General Features
11
2.1
General
11
2.2
Design Speed
12
2.3
Right-of-Way
12
2.4
Lane width of Carriageway
13
2.5
Shoulders
13
2.6
Roadway Width
14
2.7
Camber or Crossfall
14
2.8
Horizontal Alignment
15
2.9
Sight Distance
17
2.10
Vertical Alignment
18
2.11
Lateral and Vertical Clearance at Underpasses
18
2.12
Lateral and Vertical Clearance at Overpasses
19
2.13
Service Roads
19
2.14
Grade separated Structures
19
2.15
Typical Cross Sections
20
2.16
Capacity of two lane highway
20
3
Intersections and Grade Separators
27
3.1
Intersections
27
3.2
At-grade Intersections
27
3.3
Grade Separated Intersections without ramps
29
3.4
Interchanges
30
iii
pc/coi
4
Road Embankment and Cuttings
35
4.1
General
35
4.2
Road Embankment
35
4.3
Roadway in Cutting
41
4.4
Soil Survey Investigations and Design Report
42
5
Pavement Design
47
5.1
General
47
5.2
Method of Design of Flexible Pavements
47
5.3
Method of Design of Rigid Pavements
48
5.4
Design of New Pavements
48
5.5
Design Traffic
49
5.6
Subgrade
50
5.7
Pavement Components and Materials
50
5.8
Performance Evaluation
52
5.9
Widening and Strengthening of Existing Road to
Two Lane with Paved Shoulders
53
5.10
Design of Strengthening Treatment (Overlay)
55
5.11
Construction, Workmanship and Quality of Work
57
5.12
Premature Distress
57
5.13
Detailed Design Report
58
6
Roadside Drainage
63
6.1
General
63
6.2
Surface Drainage
63
6.3
Median Drainage
64
6.4
Drainage of High Embankment
64
6.5
Catch Water Drains
65
6.6
Sub-surface Drains
65
6.7
Internal Drainage of Pavement Structures
67
6.8
Survey, Investigations and Design Report
67
7
Design of Structures
71
7.1
General
71
7.2
Design Loading and Stresses
71
iv
IRC:SP:73-2007
MANUAL OF SPECIFICATIONS AND STANDARDS
7.3
Widening/reconstruction of existing structures
72
7.4
Structure Types
72
7.5
Hydrology
73
7.6
Sub-Surface Investigations
73
7.7
Culverts
73
7.8
Prestressing
74
7.9
Form Work
75
7.10
Foundation and Sub-structures
76
7.11
Approach Slab
78
7.12
Superstructure
78
7.13
Bearings
78
7.14
Expansion Joints
79
7.15
Wearing Coat
79
7.16
Earth Retaining Structures
80
7.17
River Training and Protective Works
80
7.18
Safety Barriers
80
7.19
Rail Road Bridges
81
7.20
Grade Separated Road Structures
82
7.21
Drainage
82
7.22
Structure in Marine Environment
82
7.23
Repairs and Strengthening
82
7.24
Design Report
83
8
Materials and Specifications for Structures
89
8.1
General
89
8.2
Structural Concrete
90
8.3
Cement
91
8.4
Coarse Aggregates
91
8.5
Sand/Fine Aggregates
91
8.6
Water
92
8.7
Concrete Admixture
92
8.8
Steel
94
8.9
Storage of Materials
95
8.10
Reports to be submitted
95
v
