Specification Part 3 - Road & Bridge Works - Urban Administration ...

c) Sequence of construction and details of temporary or enabling works like diversion,
cofferdam, formwork including specialized formwork for superstructure, details of borrow
areas, method of construction of embankment, sub-grade and pavement, pile concreting,
proprietary processes and products and equipments to be deployed. Wherever required
technical literature, design calculations and drawings shall be included in the method
statement;
d) Testing and acceptance procedure including documentation;
e) The special part of the QA programme under sub-Section 105.3 for the particular item of
work shall accompany the method statement for the concerned activity.
The Engineer shall examine and approve the method statement with the required modifications. The
modified method statement if required shall be submitted within 14 days of the receipt of the Engineer’s
approval. The sole responsibility for adequacy and safety of the method adopted by the Contractor shall
rest on the Contractor irrespective of any approval given by the Engineer.
116 CRUSHED STONE AGGREGATES
Where the terms crushed gravel/shingle, crushed stone, broken stone or stone aggregate appear in any
part of the Tender Documents or Drawings issued for work, they refer to crushed gravel/crushed
shingle/crushed stone aggregate obtained from integrated crushing plant having appropriate primary
crusher, secondary cone crusher, vertical shaft impact or and vibratory screen unless specified otherwise.
117 APPROVAL OF MATERIALS
Approval of all sources of material for work shall be obtained in writing from the Engineer before their use
on the works.
118 SUPPLY OF QUARRY SAMPLES
Raw and processed samples of the mineral aggregates from the approved quarry shall be submitted by the
Contractor at his cost.
119 USE OF SURFACES BY CONSTRUCTION TRAFFIC
119.1 Ordinarily, no construction traffic shall be allowed on pavement under construction unless authorized
by the Engineer. Even in that case, the load and intensity of construction traffic should be so regulated that
no damage is caused to the sub-grade or pavement layers already constructed. Where necessary, service
roads shall be constructed for this purpose and the same shall be considered as incidental to the work.
119.2 The wheels or the tracks of plant moving over the various pavement courses shall be kept free of
deleterious materials.
119.3 Bituminous base course shall be kept clean and uncontaminated as long as the same remains
uncovered by a wearing course or surface treatment. The only traffic permitted access to the base course
shall be that engaged in laying and compacting the wearing course or that engaged on such surface
treatment where the base course is to be blinded and/or surface dressed. Should the base course or tack
coat on the base course become contaminated, the Contractor shall make good by clearing it to the
satisfaction of the Engineer, and if this is impracticable, by removing the layer and replacing it to
Specifications without any extra cost to the Employer.
120 FIELD LABORATORY
120.1 Scope
The work covers the provision and maintenance of an adequately equipped field laboratory as required for
site control on the quality of materials and the works.
120.2 Description
The Contractor shall arrange to provide fully furnished and adequately equipped field laboratory. The field
laboratory shall preferably be located adjacent to the site office of the Engineer and provided with amenities
like water supply, electric supply etc. as for the site office of the Engineer in Section 120.2.