Study of MORT_&_H

1

Brief study of

MORTH Specifications

Ministry of Road Transport and Highways (India).

Introduction:

The Ministry of Road Transport and Highways, a ministry of the Government of India, is the

apex body for formulation and administration of the rules, regulations and laws relating to road

transport, and transport research, in order to increase the mobility and efficiency of the road

transport system in India. Road transport is a critical infrastructure for economic development

of the country. It influences the pace, structure and pattern of development. In India, roads are

used to transport over 60% of the total goods and 85% of the passenger traffic. Hence,

development of this sector is of paramount importance for the India and accounts for a

significant part in the budget

Creation:

The Department of War Transport was formed in July, 1942, by the bifurcation of the then

Department of Communications into two Departments:

i) Department of Posts

ii) Department of War Transport.

Functions:

The functions allocated to the Department of War Transport include Major Ports, Railways

Priorities, utilization of road and water transport, Petrol rationing and Producer Gas. Broadly

speaking, the functions of the War Transport Department were to coordinate the demands for

transport in war time, Coastal Shipping and the administration and development of major ports.

Later, the planning of export was undertaken as a corollary to the Departments control of

transport priorities also.

Changes made over years:

1957: Department of War Transport was renamed as Ministry of Transport &

Communications and Department of transport was placed under it.

1966: On 25 January, under President's order the Department of Transport, Shipping &

Tourism was placed under Ministry of Transport and Aviation.

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1967: On 13 March, the Ministry of Transport and Aviation was bifurcated into

Ministry of Shipping and Transport and the Ministry of Tourism and Civil Aviation.

1985: On 25 September, during reorganisation the Ministry of Transport and Shipping

became the Department of Surface Transport under the Ministry of Transport.

1986: On 22 October, the Department of Surface Transport under Ministry of Transport

was renamed as Ministry of Surface Transport.

1999: On 15 October, Ministry of Surface Transport was subsequently re-organized

into departments, namely Department of Shipping and Department of Road Transport

and Highways.

2000: On 17 November, the Ministry of Surface Transport was bifurcated into two

Ministries namely Ministry of Road Transport and Highways and Ministry of Shipping.

2004: On 2 October, Ministry of Shipping and Ministry of Road Transport has again

been merged and renamed as Ministry of Shipping and Road Transport and Highways

There are two departments under it:

Department of Shipping

Department of Road transport and Highways

Organisation Setup:

The Secretary (Road Transport & Highways) is assisted Joint Secretary (Road

Transport), Director General (Road Development), Financial Advisor, Advisor

(Transport Research).

Joint Secretary looks after transport administration, public grievances, vigilance road

safety and co-ordination & public relations.

Accounts Wing is headed by Chief Controller of Accounts who is responsible for

accounts budget, work and study.

Advisor (Transport Research) renders necessary data support to various wings of the

Ministry for policy planning, transport co-ordination, economic and statistical analys is

on various modes of transport with which the ministry is concerned.

Director General (Road Development) is responsible for Development & Maintenance

of National Highways apart from Central Sector roads and Central road funds.

Agencies:

National Highway Authority of India (NHAI)

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National Highways and Infrastructure Development Corporation

Indian Roads Construction Corporation (IRCC)

Indian Academy of Highway Engineers (IAHE)

Regional Offices:

Bangalore

Mumbai

Kolkata

Chandigarh

Jaipur

Patna

Guwahati

Hyderabad

Gandhinagar

Bhubaneshwar

Bhopal

Thiruvananthapuram

Shillong

Lucknow

The ministry has two wings functioning under it:

Roads Wing

Transport Wing

Roads Wing:

Main responsibilities of the roads wing are:

Planning, development and maintenance of National Highways

Extends technical and financial support to the state government for development of

state roads and roads of inter-state connectivity and national importance.

Setting standards for building and maintenance of roads and bridges.

Archiving important technical knowledge generated through projects and R&D.

Transport Wing:

Main responsibilities of the transport wing are:

Motor Vehicle Legislation

Taxation of motor vehicles

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https://en.wikipedia.org/wiki/Mumbai

https://en.wikipedia.org/wiki/Kolkata

https://en.wikipedia.org/wiki/Chandigarh

https://en.wikipedia.org/wiki/Jaipur

https://en.wikipedia.org/wiki/Patna

https://en.wikipedia.org/wiki/Guwahati

https://en.wikipedia.org/wiki/Hyderabad

https://en.wikipedia.org/wiki/Gandhinagar

https://en.wikipedia.org/wiki/Bhubaneswar

https://en.wikipedia.org/wiki/Bhopal

https://en.wikipedia.org/wiki/Thiruvananthapuram

https://en.wikipedia.org/wiki/Shillong

https://en.wikipedia.org/wiki/Lucknow

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Compulsory insurance for vehicles

Promotion of Transport co-operatives in the field of motor transport.

Setting National road safety standards

Compiling data on road accidents and evolving a Road safety culture among the people

in the country

Providing grants to NGOs in accordance with laid down guidelines.

Acts:

Over years the ministry has passed several acts to maintain law and order in Road Transport in

the country

The Road Transport Corporations Act,1950

The National Highways Act,1956

The Motor Vehicles Act,1988

The National Highways Authority of India Act,1988

Statistics:

India has one of the largest road networks of over 4.885 million km consisting of:

Road Length Distribution

Roads Length

National Highways/ Expressways

92,851 km

State Highways 1,42,687 km

Other Roads 46,49,462 km

Total 48,85,000 km

The total road length of India had grown more than 11 times in 60 years from 1951-2011 also

the length of the surfaced roads ha increased about 16 times over the same period. The

connectivity in India has tremendously improved due to formation of new surface roads.

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Total length of roads (in lakh km)

Total length of surfaced roads (in lakh km)

For development of roads in the country the government has made an allocation of ₹19,423.88

crores under the Central Road Fund for 2013-2014 with the following breakup.

Type Grants

Grants to State Governments and

UTs for State Roads ₹2,659.91 crores

Grants to SGs and UTs for inte-state connectivity and roads of

national importance

₹262.22 crores

National Highways ₹9,881.95 crores

Rural Roads ₹5,827.20 crores

Railways ₹1092.60 crores

Total ₹19,423.88

crores

Government Initiatives:

The government has provided various incentives for private and foreign sector investments in

the roads sector. 100% FDI is allowed in the sectors of land transport to promote building of

highway bridges, toll roads, and vehicular tunnels; services incidental to transport such as cargo

handling is incidental to land transport; construction and maintenance of roads, bridges; and

construction and maintenance of roads and highways offered on build-operate-transfer (BOT)

basis, including collection of toll.

A 10-year tax exemption under Section 80 IA has been granted to the Highway building

projects to attract private investors. The ministry has also framed a ‘Special Accelerated Road

Development Programme in North Eastern Region’ for improving road connectivity to remote

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places in this region. The estimated cost of the proposal is USD 2.53 billion. The Union Budget

2012–13 proposed an increase of allocation of the Ministry of Road Transport and Highways

by 14% to ₹25,360 crore.

The World Bank has approved a USD 975 million loan for developing the first phase of the

eastern arm of the USD 17.21 billion Dedicated Freight Corridor Project in India. The

Dedicated Freight Corridor Corporation of India Ltd. has tied up with the Japanese Bank of

Industrial Cooperation for USD 14.56 billion funding as loan for the first phase and it is likely

to be commissioned in 2016.

The Prime Minister Gram Sadak Yojana (PMGSY) is a scheme for development of rural roads

in India. The Construction of Rural Roads Project (CRRP) is another initiative focused on rural

development.

Study of Ministry of Road Transport and Highways (India) (MoRTH)

MoRTH is a sort of specification which is applicable to Road and Bridge works which are to

be executed under the contract and otherwise directed by the Engineer- in-Charge. The main

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intension of this specification is to prevail sound engineering practise, to employ best quality

material and workmanship and to fully comply with the instructions of the Engineer.

This specification is implemented in order to carry out to the satisfaction of the Engineer and

conform to the location, lines, dimensions, grades and cross sections shown on the drawings or

as decided by the Engineer. The standard requirements of quality of materials, processing of

the materials needed on the site, Salient features of the construction work and quality of

finished work, measures for safety of workers and public and traffic arrangements during

execution are set in the sections of MoRTH.

While formulating MoRTH specifications all Indian Road Congress (IRC) specifications and

recommended Codes of Practice have been referred and listed in Appendix – 1.

Picture 1. Ministry of Road Transport and Highways (India) (MoRTH)

Here forth all sections are discussed along with their brief description, content and at the end

some important points are mentioned while studying and implementing the provisions of those

specifications.

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Section 100. General

These Specifications shall apply to all such road and bridge works as are required to be

executed under the Contract or otherwise directed by the Engineer- in-Charge (hereina fter

referred to as the Engineer). In every case, the work shall be carried out to the satisfaction of

the sections shown on the drawings or as indicated by the Engineer. The quality of materia ls,

processing of materials as may be needed at the site, salient features of the construction work

and quality of finished work shall comply with the requirements set forth in succeeding

sections. Where the drawings and Specifications describe a portion of the work in only general

terms, and not in complete detail, it shall be understood that only the best general practice is to

prevail, materials and workmanship of the best quality are to be employed and instructions of

the Engineer are to be fully complied with.

A list of Indian Roads Congress Specifications and Recommended Codes of Practice which

have been made use of in the preparation of these Specifications is given at Appendix-1. The

latest edition of all Specifications/Standards till 30 (thirty) days before the final date of

submission of the tender, shall be adopted.

Section Title Content

100 General 101. Introduction

102. Definitions

103. Materials and test standard

104. Sieve Designations

105. Scope of work

106. Construction Equipment

107. Contract Drawings

108. Site Information

109. Setting out

110. Publications

111. Precautions for Safeguarding the Environment

112. Arrangement for Traffic During Construction

113. General rules for the measurement of works for payment

114. Scope of rates for different items of work

115. Methodology and sequence of work

116. Crushed stone aggregates

117. Approval of materials

118. supply of quarry samples

119. Use of surfaces by construction traffic

120. Site office for engineer and other supervisory staff

121. Field laboratory

122. Site residential accommodation for engineer and other supervisory staff

123. Providing and maintaining wireless communication system

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124. Providing and maintaining vehicles for the engineer

125. Supply of colour record photographs and albums

126. Supply of video cassettes

Section 200. Site Clearance

This work shall consist of cutting, removing and disposing of all materials such as trees, bushes,

shrubs, stumps, roots, grass, weeds, top organic soil not exceeding 150 mm in thickness,

rubbish etc., which in the opinion of the Engineer are unsuitable for incorporation in the works,

from the area of road land containing and embankment, drains, cross-drainage structures and

such other areas as may be specified on the drawings or by the Engineer.


200 Site Clearance

201. Clearance and Grubbing

202. Dismantling Culverts, Bridges and Other Structures / Pavements

Section 300. Earthwork, Erosion Control and Drainage

The work shall consist of excavation, removal and satisfactory disposal of all materia ls

necessary for the construction of roadway, side drains and waterways in accordance with

requirements of these Specifications and the lines, grades and cross-sections shown in the

drawings or as indicated by the Engineer.


300 Earthwork, Erosion

Control and Drainage

301. Excavation for Roadway and Drains

302. Blasting operations

303. Presplitting rock excavation slopes

304. Excavation for Structure

305. Embankment Construction

306. Soil erosion and sedimentation control

307. Turfing with sods

308. Seeding and mulching

309. Surface/Sub-Surface Drains

310. Preparation and surface treatment of formation

311. Works to be kept free of water

312. Water courses at culverts

313. Construction of rockfill embankment

Section 400. Sub-Bases, Bases (Non-Bituminous) and Shoulders

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This work shall consist of laying and compacting well-graded material on prepared sub-grade

in accordance with the requirements of these Specifications.


400 Sub-Bases, Bases (Non-Bituminous)

and Shoulders

401. Granular sub-base

402. Lime treated soil for improved sub-grade/sub-base

403. Cement treated soil sub-base/base

404. Water bound macadam sub-base/base

405. Crushed cement concrete sub-base/base

406. Wet mix macadam sub-base/base

407. Shoulders, islands and median

408. Cement concrete kerb and kerb with channel

409. Footpaths and separators

410. Crusher-run macadam base

Wet mix macadam sub-base/base:

This work shall consist of laying and compacting clean, crushed, graded aggregate and granular

material, premixed with water, to a dense mass on a prepared subgrade/sub-base/base or

existing pavement as the case may be in accordance with the requirements in these

Specifications. The Material shall be laid in one or more layers as necessary to lines, grades

and cross-sections shown on the approved drawings or as directed by the Engineer.

The thickness of a single compacted Wet Mix Macadam layer shall not be less than 75 mm.

When vibrating or other approved types of compacting equipment are used, the compacted

depth of a single layer of the sub-base course may be increased to 200 mm upon approval of

the Engineer.

Grading requirements of aggregates for wet mix macadam:

IS Sieve

Designation

Per cent by weight passing

the IS Sieve

53.00 mm 100

45.00 mm 95-100

45.00 mm - -

22.40 mm 60-80

11.20 mm 40-60

4.75 mm 25-40

2.36 mm 15-30

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600.00 micron 8-22

75.00 micron 0-8

Section 500. Bases and Surface Courses (Bituminous)

Bituminous pavement courses shall be made using the material described in the specifications.

The use of machinery and equipment mentioned in various clauses of these specifications is

mandatory. Details of machinery and equipment are available in the manual of construction

and Supervision of Bituminous Works. The equipment mandatory for any particular project

shall be in accordance with the contact specifications for that project.


500 Bases and

Surface Courses (Bituminous)

501. General Requirements for Bituminous Pavement

502. Prime Coat over Granular Base

503. Tack Coat

504. Bituminous Macadam

505. Dense Bituminous Macadam

506. Sand Asphalt Base Course

507. Bituminous Concrete

508. Close-Graded Premix Surfacing/ Mixed Seal Surfacing

509. Surface Dressing

510. Open-Graded Premix Surfacing

511. Seal Coat

512. Slurry Seal

513. Fog Spray

514. Micro - Surfacing

515. Stone Matrix Asphalt (SMA)

516. Mastic Asphalt

517. Crack Prevention Courses

518. Bituminous Cold Mix (including Gravel Emulsion)

519. Recycling of Bituminous Pavement

520. Supply of Stone Aggregates for Pavement Courses

Section 600. Concrete Pavement

The work shall consist of construction of (zero slump) dry lean concrete sub-base for cement

concrete pavement in accordance with the requirements of these specifications and in

conformity with the lines, grades and cross-sections shown on the drawings or as directed by

the Engineer. The work shall include furnishing of all plant and equipment, materials and

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labour and performing all operations, in connection with the work, as approved by the

Engineer.


600 Concrete

Pavement

601. Dry Lean Cement Concrete Sub-Base

602. Cement Concrete Pavement

Section 700. Geosynthetics

The specification covers the various applications of geosynthetic materials for use in road and

bridge works including supplying and laying as per contract specifications.


700 Geosynthetics 701. Geosynthetics for Road and Bridge Works 702. Geotextiles for Drainage, separation and Erosion Control

703. Geogrid

704. Geocomposite Drains

705. Geocell for Slope Protection

706. Geosynthetic Mat

707. Natural Geotextile

708. Paving Fabrics/ Glass Grids

Section 800. Traffic Signs and Appurtenances

The colour configuration, size and location of all traffic signs for highways other than

Expressways shall be in accordance with the Code of Practice for Road Signs, IRC: 67 or as

shown on the drawings.


800 Traffic Signs and

Appurtenances

801. 1 General

801. 2 Materials

801. 3 Traffic Signs Having retro-reflective Sheeting

801. 4 Installation

801. 5 Measurements for Payment

801. 6 Rate

802. Overhead Signs

803. Road Markings

804. Hectometre/kilometre stone

805. Road delineators

806. Boundary stones

807. Fencing

808. Tubular steel railing

809. Concrete crash barrier

810. Metal beam crash barrier

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811. Road traffic signals

Section 900. Quality control for Road Works

All materials to be used, all method to be adopted and all work to be performed shall be strictly

in accordance with the requirements of these specifications. The contractor shall set up a field

laboratory at locations approved by the Engineer and equip the same with adequate equipment

and personnel in order to carry out the Quality Control for works and all the required test as

per Specifications and/or as directed by the Engineer. The provision and maintenance of the

laboratory shall be as per clause 120 and/or directed by the Engineer. The list of equipments

and the facilities shall be got approved from Engineer in advance.


900 Quality control for

Road Works

901. General

902. control of Alignment, Level and Surface Regularity

903. Quality control Tests during Construction

Section 1000. Material for structures

Materials to be used in the work shall conform specifications mentioned on the drawings, the

requirements laid down in this section and specifications for relevant items of work.

If any material, not covered in these specifications, is required to be used in the work, it shall

conform to relevant Indian standards, if there any, or to the requirements specified by the

Engineer.


1000 Material for structures

1001. Description

1002. Sources of Materials

1003. Bricks

1004. Stone and Blocks

1005. Cast Iron

1006. Cement

1007. Coarse Aggregates

1008. Fine Aggregates

1009. Steel

1010. Water

1011. Timber

1012. Concrete Admixtures

1013. Reinforced and Prestressed Concrete Pipes

1014. Storage of Materials

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1015. Testing and standards of acceptance

Section 1100. Pile Foundations

This work shall consist of construction of all types of piles for structures in accordance with

the details shown on the drawings and confirming to the requirements of these specificat ions

or as directed by the Engineer.


1100 Pipe

Foundations

1101. Description

1102. Subsurface Investigations

1103. Type of Piles

Section 1200. Well Foundations

This work consists of construction of well foundation, taking it down to the founding level

through all kinds of sub-strata, plugging the bottom, filling the inside of the well, plugging the

top and providing as well cap in accordance with the details shown on the drawing and as per

these Specifications, or as directed by the Engineer.


1200 Well Foundations

1201. Description

1202. General

1203. Setting out and preparations for sinking

1204. Cutting edge

1205. Well curb

1206. Well steining

1207. Well sinking

1208. Bottom plug

1209. Sand filling

1210. Top plug

1211. Well cap

1212. Tolerances

1213. Tests and standards of acceptance

1214. Measurements for payment

1215. Rate

Section 1300. Brick Masonry

This work shall consist of construction of structures with bricks jointed together by cement

mortar in accordance with the details shown on the drawings or as approved by the Engineer.

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1300 Brick Masonry

1301. Description

1302. Materials

1303. Personnel

1304. Cement mortar

1305. Soaking of bricks

1306. Joints

1307. Laying

1308. Jointing old and new work

1309. Curing

1310. Scaffolding

1311. Equipment

1312. Finishing of surfaces

1313. Architectural coping for wing / return / parapet wall

1314. Acceptance of work


1316. Rate

Section 1400. Stone Masonry

This work shall consist of the construction of structures with stones jointed together by cement

mortar in accordance with the details shown on the drawings and these specifications or as

approved by the Engineer.


1400 Stone

Masonry

1401. Description

1402. Materials

1403. Personnel

1404. Type of Masonry

1405. Construction

1406. Pointing

1407. Curing

1408. Scaffolding

1409. Weep Holes

1410. Jointing with Existing Structures

1411. Coping for Wing/Return/ Parapet Walls



1414. Rate

Section 1500. Formwork

Formwork shall include all temporary or permanent forms required for forming the concrete of

the shape, dimensions and surface finish as shown on the drawing or as directed by the

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Engineer, together with all props, staging, centering, scaffolding and temporary construction

required for their support. The design, erection and removal of formwork shall conform to IRC:

87 “Guidelines for Design and Erection of Falsework for Road Bridges” and these

Specifications


1500 Formwork 1501. Description

1502. Materials

1503. Design of Formwork

1504. Workmanship

1505. Lining of Formwork

1506. Precautions

1507. Preparation of Formwork Before Concreting

1508. Removal of Formwork

1509. Re-Use of Formwork

1510. Specialized Formwork



1513. Rate

Section 1600. Steel Reinforcement (Untensioned)

Formwork shall include all temporary or permanent forms required for forming the concrete of

the shape, dimensions and surface finish as shown on the drawing or as directed by the

Engineer, together with all props, staging, centering, scaffolding and temporary construction

required for their support. The design, erection and removal of formwork shall conform to IRC:

87 “Guidelines for Design and Erection of Falsework for Road Bridges” and these

Specifications


1600 Steel

Reinforcement (Untensioned)

1601. Description

1602. General

1603. Protection of Reinforcement

1604. Bending of Reinforcement

1605. Placing of Reinforcement

1606. Bar Splices

1607. Testing and acceptance


1609. Rate

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Section 1700. Structural Concrete

The work shall consist of furnishing and placing structural concrete and incidental construction

in accordance with these Specifications and in conformity with the lines, grades and

dimensions, as shown on the drawings or as directed by the Engineer.


1700 Structural

Concrete

1701. Description 1702. Materials 1703. Grades of Concrete 1704. Proportioning of Concrete

1705. Admixtures

1706. Size of Coarse Aggregate

1707. Equipment

1708. Mixing Concrete

1709. Transporting, Placing and Compaction of Concrete

1710. Construction joints

1711. Concreting Under Water

1712. Adverse Weather Conditions

1713. Protection and Curing

1714. Finishing

1715. Tolerances

1716. Tests and Standards of Acceptance

1717. Measurements for Payment

1718. Rate

Grades of concrete: The grades of concrete shall be designated by the characteristic strength

as given in Table 1700-1, where the characteristic strength is defined as the strength of concrete

below which not more than 5 percent of the test results are expected to fall.

Grade

Designation

Specified characteristic compressive

strength of 150 mm cubes at 28 days,

in MPa

M 15 15

M 20 20

M 25 25

M 30 30

M 35 35

M 40 40

M 45 45

M 50 50

M 55 55

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The lowest grades of concrete in bridges and corresponding minimum cement contents and

water-cement ratios shall be maintained as indicated in Tables 1700-2 and 1700-3.

For bridges with prestressed concrete or those with individual span lengths more than 30 m or

those that are built with innovative design/construction

a) Minimum cement content and maximum water cement ratio

Structural Member

Min. cement content for all

exposure conditions (kg/m3)

Max. water cement ratio

Exposure conditions

Normal Severe

a) PCC members 360 0.45 0.45

b) RCC members 400 0.45 0.4

c) PSC members 400 0.4 0.4

b) Minimum strength of concrete

Member

Condition of Exposure

Moderate Severe

a) PCC members M 25 M 30

b) RCC members M 35 M 40

c) PSC members M 35 M 40

For bridges other than those mentioned in table 1700-2 and culverts and other incidenta l

construction

a) Minimum cement content and maximum water cement ratio

Structural Member

Min. cement content

(kg/ m3)

Max. water

cement ratio

Exposure conditions Exposure conditions

Normal Severe Normal Severe

a) PCC members 250 310 0.50 0.45

b) RCC members 310 400 0.45 0.40

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b) Minimum strength of concrete:

Member

Condition of Exposure

Moderate Severe

a) PCC members

M 15 M 20

b) RCC

members M 20 M 25

Notes: Applicable to Tables 1700-2 and 1700-3

(i) The minimum cement content is based on 20 mm aggregate (nominal max. size). For

40 mm and larger size aggregates, it may be reduced suitably but the reduction shall

not be more than 10 per cent.

(ii) For underwater concreting, the cement content shall be increased by 10 per cent.

(iii) Severe conditions of exposure shall mean alternate wetting and drying due to sea spray,

alternate wetting and drying combined with freezing and buried in soil having corrosive

effect.

(iv) Moderate conditions of exposure shall mean other that those mentioned in (iii) above.

The cement content shall be as low as possible but not less than the quantities specified

above. In no case shall it exceed 540 kg/ m3 of concrete.

Section 1800. Prestressing

Structural concrete containing prestressed steel reinforcement to introduce precompression is

termed as prestressed concrete. The work shall be carried out in accordance with the drawing

and these specifications or as approved by the engineer.

Concrete and untensioned steel for the construction of prestressed concrete members shall

conform to the requirements of sections 1700 and 1600 for structural concrete and steel

reinforcement respectively in so far as the requirements of these Sections apply and are not

specifically modified by requirements set forth herein.

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1800 Prestressing 1801. Description 1802. General 1803. Materials 1804. Testing of prestressing Steel and Anchorages

1805. Workmanship

1806. Supervision

1807. Tensioning Equipment

1808. Post Tensioning

1809. Grouting of Prestressed Tendons

1810. Pre - Tensioning

1811. Protection of Ends

1812. Safety Precautions During Tensioning

1813. Surface Preparation

1814. Transportation Storage and Handling of Precast Girders

1815. Tolerances



1818. Rate

Section 1900. Structural Steel

This work shall include furnishing, fabricating, transporting, erecting and painting structural

steel, rivet steel, cast steel, steel forgings, cast iron and other incidental metal construction of

the kind, size and quantity in conformity with the drawings and these specifications or as

desired by the Engineer.


1900 Structural Steel

1901. Description

1902. General

1903. Materials

1904. Fabrication

1905. Erection

1906. Painting



1909. Rate

All materials shall conform to section 1000. Special requirements are given below:

Mild steel for bolts and nuts shall conform to IS: 226 but have a minimum tensile strength of

44 kg/sq. mm and minimum percentage elongation of 14. High tensile steel for bolts and nuts

shall conform to IS:961 but with a minimum tensile strength of 58 kg/sq. mm. High strength

friction grip bolts shall be permitted for use only on satisfactory evidence of performance to

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the requirements (not covered by these specifications) specified by the Engineer or included in

the special provisions.

For cast steel, the yield stress shall be determined and shall not be less than 50 per cent of the

minimum tensile strength.

Plain washers shall be of steel. Tapered or other specially shaped washers shall be of steel, or

malleable cast iron.

Section 2000. Bearings

This work shall consist of furnishing and fixing bearings in position in accordance with the

details shown on the drawings, to the requirements of these specifications or as directed by the

Engineer.


2000 Bearings 2001. Description

2002. General

2003. Steel bearings

2004. Special bearings

2005. Elastomeric bearings

2006. Pot bearings

2007. Inspection and testing



2010. Rate

Height of Bearings:

Tolerances on height of any component casting shall not exceed +0.5mm. No minus tolerance

shall be allowed. All rocking, rolling and sliding surfaces shall have a machine smooth finish

to 20 micron maximum mean deviation as per IS: 3073.

Section 2100. Open Foundation

The work shall cover furnishing and providing plain or reinforced concrete foundation placed

in open excavation, in accordance with the drawings and these specifications or as directed by

the Engineer.

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2100 Bearings 2101. Description

2102. Materials

2103. General

2104. Workmanship


2106. Tolerances


2108. Rate

Section 2200. Sub-structure

The work shall cover furnishing and providing of masonry or reinforced concrete sub-structure

in accordance with the drawings and as per these specifications or as directed by the Engineer.


2200 Sub-

structure

2201. Description

2202. Materials

2203. General

2204. Pier and abutments

2205. Pier cap and abutment cap

2206. Dirt/ballast wall, return wall and wing wall


2208. Tolerances in Concrete Elements


2210. Rate

Section 2300. Concrete Superstructure

The work shall cover furnishing and providing of concrete superstructure in accordance with

the drawings as per these specifications or as directed by the Engineer.


2300 Concrete Superstructure

2301. Description

2302. Materials

2303. General

2304. Reinforced concrete construction

2305. Prestressed concrete construction

2306. Tolerances


2308. Tolerances in Concrete Elements


2210. Rate

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Section 2400. Surface and Sub-surface Geotechnical Exploration

The objective of sub-surface exploration is to determine the suitability or otherwise of the soil

or rock surrounding the foundation and soil parameters and rock characteristics for the design

o foundation by in-situ testing or testing of samples/ cores taken out of exploration. The sub-

surface exploration shall be planned in such a way that different types of soil up to the desired

depth and their profile for the full proposed length of the bridge can be recorded and other

information such as mechanical and physical properties like grain-size distribution, sensitivity,

any existence of deleterious material in soil or ground water, etc., are determined along with

soil parameters and rock characteristics. The sub-surface exploration shall also throw light on

porosity of rock and subsidence due to mining, ground water level, artesian condition, if any,

likely sinking and driving effort, likely constructional difficulties, etc.


2400 Surface and Sub-surface Geotechnical

Exploration

2401. Description

2402. Preliminary investigation

2403. Detailed exploration

2404. Exploration for bridge foundations resting on rock

2405. Boring

2406. Records of boring and trial pits

2407. Methods of sampling

2408. Procedure for taking samples

2409. Protection, handling and labelling of samples

2410. Tests for exploration of shallow foundations of bridges

2411. Tests for exploration for deep foundations of bridges

2412. Testing of material for guide bund and high embankment

and its foundations


2414. Rate

Section 2500. River Training Work and Protection work

River training and protection work shall include construction of guide bunds, guide walls, bank

protection, flooring and approach embankment protection as required for ensuring safety of the

bridge structure and its approaches against damage by flood/flowing water. Construction of

various components shall conform to IRC: 89 and these specifications or as directed by the

Engineer.

24


2500 River Training

Work and Protection work

2501. Description

2502. Guide bund

2503. Apron

2504. Guide bund

2505. Pitching/reventment on slopes

2506. Dry rubble flooring

2507. Certain wall and flexible apron



2510. Rate

Section 2600. Expansion Joints

The work shall consist of fabrication and installation of expansion joints. The filler joint,

asphaltic plug joint, compression seal joint and reinforced elastomeric joint of slab seal, strip

seal and box seal type shall conform to these specifications.


2600 Expansion

Joints

2601. Description

2602. General

2603. Performance Requirements

2604. Filler Joints

2605. Reinforced Elastomeric Joint

2606. Single Strip/ Box Seal Joint

2607. Modular Strip/ Box Seal Expansion Joint

2608. Asphalt Plug Joint

2609. Compression Seal Joint

2610. Installation of Expansion Joints

2611. Procedure for Installation

2612. Testing and Acceptance Standards



2615. Rate

Section 2700. Wearing Coat and Appurtenance

This work shall include wearing coat and bridge appurtenance such as railing, approach slab,

drainage spouts, weep holes in conformity with details shown on the drawing and these

specifications or as approved by the Engineer.

25


2700 Wearing Coat and

Appurtenance

2701. Description

2702. Wearing coat

2703. Railings

2704. Approach slab

2705. Drainage spouts

2706. Weep hole



2709. Rate

Section 2800. Repair of Structures

Repair of structures shall be carried out in accordance with the repair plans and these

specifications or as directed by the Engineer. Where repair work is not covered by these

specifications, special specification may be framed. Implementation of repair schemes shall

also conform to provision of IRC: SP: 40.


2800 Repair of Structures

2801. Description

2802. General

2803. Sealing of cracks by injection of epoxy resin

2804. Epoxy mortar for replacement of spalled concrete

2805. Epoxy bonding of new concrete to old concrete

2806. Cement grouting

2807. Guniting / shotcrete

2808. Replacement / rectification of bearings

2809. Dismantling of concrete wearing coat

2810. External prestressing



2813. Rate

Section 2900. Pipe Culverts

This work shall consist of furnishing and installing reinforced cement concrete pipes, of the

type, diameter and length required at the locations shown on the drawings or as ordered by the

Engineer and in accordance with the requirements of these specifications.


2900 Pipe Culverts 2901. Scope

2902. Materials

2903. Excavation for Pipe

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2904. Bedding for Pipe

2905. Laying of Pipe

2906. Jointing

2907. Backfilling

2908. Headwalls and Other Ancillary Works

2909. Opening to Traffic


2911. Rate

Section 3000. Maintenance of Road

The specifications shall apply to all items of road maintenance works as required to be carried

out under the Contract or as directed by the Engineer. The works shall be carried out in

conformity with the relevant specifications to the required level, grade and lines using approved

materials. The works shall be carried out using light duty machinery or manual means provided

the quality of the end product does not suffer. In execution of maintenance works, a reference

is made to the IRC publications: “Manual for Maintenance of Roads” and Code of Practice for

Maintenance for Bituminous surfaces of highways, IRC 82-1982” for guidance and compliance

wherever applicable. Wherever the specification is not clear, good engineering practice shall

be adopted in the construction to the satisfaction of the Engineer.


3000 Maintenance

of Road

3001. General

3002. Restoration of Rains cuts

3003. Maintenance of Earthen Shoulders

3004. Bituminous work in Connection with Maintenance and repair

3005. Maintenance of cement concrete Road

Section 3100. Reinforced Earth

The work covers construction of soil structures together with the construction of earthwork in

layers, assembly and placing of reinforcing elements and facia elements during the construction

process and all associated works.

The work shall include the Design and Construction of the reinforced soil structure and ground

improvement measures required, if any.

The reinforced soil retaining structures can be used as, i) Reinforced soil retaining wall, ii)

Reinforced soil abutment, iii) Reinforced soil slope.

27

Reinforced soil structures with slope face angles steeper than 700 are categorized as reinforced

soil walls and those with slope face angle less than 700 are considered as reinforced soil slopes.


3100 Reinforced Earth

3101. Scope

3102. Design

3103. Reinforcing Element

3104. Earth Fill

3105. Facia Material

3106. Construction Details

3107. Reinforced Soil Slopes

3108. System Responsibility, Performance Bond


3110. Rate

Section 3200. Soil Nailing

The specifications shall apply to Soil Nailing works as required to be carried out under the

contract or as directed by the Engineer.


3200 Soil Nailing 3201. Scope

3202. Nail installation Methods

3203. Construction Materials

3204. Facing types

3205. Construction Sequence

3206. Geotechnical Aspects

3207. Analysis of Failure Modes

3208. Initial Design Considerations

3209. Other Design Considerations

3210. Field Pullout Testing


3212. Rates

3213. References

Study of MORT_&_H

Engineering