General Specifications have been produced for National Highway Authority,
keeping in consideration that following types of activities are being carried
out in this organization:
i) Construction of Motorways, new Highways, Bridges and allied works.
ii) Rehabilitation and lmprovement of existing road network.
iii) Maintenance of existing roads and structures.
All the above three aspects of construction, rehabilitation and maintenance
have been covered in these General Specifications. Subsequent chapters
would give a list of such items of work with an indication of their probable
use, in case of the above three categories of works.
These Specifications describe the requirements and procedures for
execution of work items to achieve required workmanship and quality. The
materials to be used shall conform to specifications and testing procedures
as per American Association of State Highway and Transpo:’tation Officials
(AASHTO), the American Society for Testing and Materials (ASTM) or
British Standard (B.S.) as indicated in their latest editions. Samples of
materials for laboratory tests and their subsequent approval shall be utilized
according to these references
Contractor shall also provide skilled manpower in adequate number, who
can perform execution with quality and workmanship control in accordance
with the requirements of the work item.
Nunrber and kind of Equipment required for different items of work shall be
planned by the contractor keeping in view the workmanship required by a
particular item and the quantity of finrshed item required to be carried out in
eight hours shift. The Engineer shall approve such planning or any cnanges
shall be proposed for guidance of the Contractor. However this procedure
shall not relieve the Contractor of his contractual obligations pertaining to
performance and maintenance of project
while few of these specifications may provide that equipment of a particular
size and type is to be used to perform portions of the work, it is to be
understood that the deployment and use of new or improved equipment is to
The contractor may request, in writing, permission from the Engineer to use
equipment of a different size or type in place of the equipment specified or
recommended in these chapters.
The Engineer, before considering or granting such request, may require the
contractor to furnish, at his expense, evidence to satisfy the Engineer that
the equipment proposed for use by the contractor is capable of producing
work equal to or better in quality than, that which can be produced by the
lf such permission is granted by the Engineer, it shall be understood that
such permission is granted for the purpose of testing the quality of work
actually produced by such equipment and is subject to continuous
attainment of results which, in the opinion of the Engineer, are equal to, or
better than, that which can be obtained with the equipment specified.
TheEngineer shall have the right to withdraw such permission at any time when
he determines that the alternative equipment is not producing work of equal
quality in all respects, to that which can be produced by the equipment
Upon withdrawal of such permission by the Engineer, the
contractor will be required to use the equipment originally specified and
shall, in accordance with the directions of the Engineer, remove and dispose
off or othena/se remedy, at his expense, any defective or unsatisfactory work
produced with the alternative equipment.
Neither the Employer nor the contractor shall have any claim against the
other for either the withholding or the granting of permission to use
alternative equipment, or for the withdrawal of such permission.
Nothing in this clause shall relieve the contractor of his responsibility for
furnishing materials or producing finished work of the quality specified in
Storage of Materials
Articles or materials to be incorporated in the work shall be stored in such a
manner as to ensure the preservation of their quality and fitness for the
work, and to facilitate inspection.
All materials which the Engineer has determined as not conforming to the
requirements of the drawings and specifications will be rejected whether in
place or not.
They shall be removed immediately from the site of the work,
unless otherwise permitted by the Engineer. No rejected material, the
defects of which have been subsequently corrected shall be used in the
work, unless approval in writing has been given by the Engineer. Upon
failure of the Contractor to comply promptly with any order of the Engineer
made under the provisions in this clause, the Engineer shall have authority to
cause the removal of rejected material and to deduct the cost thereof from
any payments due or to become due to the Contractor.
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