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

v) All labour, materials, tools, equipment, safety measures, testing and incidentals
necessary to complete the work to Specifications.
vi) Arranging disposal sites; and
viii) Dewatering;
Provided, however, where presplitting is prescribed to achieve a specified slope in rock excavation, the
same shall be paid for vide Clause 303.5.
301.9.2 The Contract unit rate for loosening and recompacting the loosened materials at subgrade
shall include full compensation for loosening to the specified depth, including breaking clods, spreading
in layers, watering where necessary and compacting to the requirements.
301.9.3 Clauses 301.9.1 and 305.8 shall apply as regards Contract unit rate for item of removal of
unsuitable material and replacement with suitable material respectively.
301.9.4 The Contract unit rate for item of preparing rocky sub-grade as per Clause 301.6 shall be full
compensation for providing, laying and compacting granular base material for correcting surface
irregularities including all materials, labour and incidentals necessary to complete the work and all
leads and lifts.
301.9.5 The Contract unit rate for the items of stripping and storing topsoil and of reapplication of
topsoil shall include full compensation for all the necessary operations including all lifts and leads.
302 BLASTING OPERATIONS
302.1 General
Blasting shall be carried out in a manner that completes the excavation to the lines indicated in
drawings, with the least disturbance to adjacent material. It shall be done only with the written
permission of the Engineer. All the statutory laws, regulations, rules, etc., pertaining to the acquisition,
transportation, storage, handling and use of explosives shall be strictly followed by the Contractor.
302.2 Guide lines for use of blasting material, personal & blasting operation are given below:
(1) All the statutory laws, regulations, rules, etc. pertaining to the acquisition, transport, storage,
handling and use of explosives are followed and information describing pertinent blasting method and
procedures is furnished by the Contractor prior to starting the work.
(2) The magazine for the storage of explosive is built to the designs and specifications of the
Inspection General Explosives, Nagpur and located at the approved site.
(3) No unauthorized person is admitted into the magazine.
(4) No match sticks or inflammable material shall be allowed in the magazine.
(5) All explosives are stored in a secure manner and such storage places shall be clearly marked.
(6) The blasting operations remain in the charge of competent and experienced supervisors and
workmen who are thoroughly acquainted with the details of handling explosives and blasting operations.
(7) The blasting is carried out during fixed hours of the day, preferably during the mid-day luncheon
hour or at the close of the work.
(8) All public utility companies having structures in proximity of the site of work are notified
sufficiently in advance of the blasting work.
(9) For blasting work within 50 m of any railway track or structures, the concerned Railway
Authority is notified sufficiently in advance of the blasting work.
(10) Red danger flags are displayed prominently in all directions during the blasting operations. The
flags are planted 200 m from the blasting site in all directions.
(11) Sufficient safety arrangements shall be made, including positioning of manpower at proper
locations to ensure that all persons including workmen are excluded from the flagged area at least 10
minutes before the firing.
(12) Blasting is as light as possible, consistent with thorough breakage of material.