CLASSIFICATION OF EARTHWORK
The
earthwork shall be classified under the following main categories and measured separately for each
category. All types of soil, murrum, boulders,
Soft
rock, Hard rock.
ALL TYPES OF SOIL, MURRUM AND BOULDERS
This
includes
earth,
murrum,
top
deposits
of agricultural soil, reclaimed soil, clay, sand or
any combination thereof
ad soft
and hard
murrum, shingle
etc. which is
loose
enough
to be removed with
spadies, shovel and pick axes.
Boulders not more than 0.03
cum. in volume found during the course of excavation shall also fall under this classification.
EXCAVATION IN SOFT ROCK
After the excavation is completed, the contractor shall notify the Engineer-in-charge to that effect and
no
further work shall be taken up until the Engineer-in-charge has approved the depth and dimensions an also the nature of foundation materials, levels and measurements shall also be recorded prior to taking up any further
work.
SHORING
Unless separately provided for in
the schedule of quantities, the quoted rate for excavation shall include
excavation of slopes to prevent falling in soil by providing and / or fixing, maintaining and removing of shorting, bracing etc. The contractor
would be responsible for
the design of shoring for proper retaining of sides of
trenches, pits
etc.
with due consideration to the traffic, superimposed loads etc. shoring shall be of sufficient strength to resist the pressure and ensure safety from slips and to prevent damage to work and property and injury to persons. It shall be removed as directed after items for which It is required are completed should the slips occur, the slipped materials shall be removed and slope dressed to a modified stable slope. Removal of
the
slipped earth will not be measured for payment.
DEWATERING
Unless specifically provided for as a separate item in the schedule of quantities, rate shall also include bailing or pumping out all water which may accumulate in the excavation during the progress of further works
such
as mud mat concrete, R.C. footings, shuttering etc. either due to seepage, springs, rain or any other cause and diverting surface flow by bunds or other means. Care shall be taken to ensure that the water discharged sufficiently away from the foundations t keep it free from nuisance to
other works in the neighborhood.
DISPOSAL OF EXCAVATED MATERIALS
ANTIQUITIES
Any
finds of archeological interest such as relics of antiquity, coins, fossils or other articles of value shall be delivered
to
the Engineer-in-charge and shall be the property of the Government.
USEFUL MATERIALS
Any material
obtained from the
excavation
which in
the opinion of
the Engineer-in- charge
is useful, shall be
stacked separately in regular stacks as directed by the Engineer-in- charge and shall be the
property of the Government.
No material excavated from foundation trenches of whatever kind they
may
be are to be
placed even
temporarily nearer than about 3m from the outer edge of excavation. Discretion of the Engineer-in-charge in
such
cases is final. All materials excavated will remain the property of
the
Department. Rate for excavation
includes sorting out of the useful materials and stacking them separately as directed within the specific lead.
Material suitable and useful for backfilling or there use shall be stacked in convenient place but not in such a
way
as to
obstruct free movement of materials, workers and vehicles or encroach on the area required for
constructional
purposes. It shall be used to the extent required to completely backfill the structure to original
ground level or
other elevation shown on the
plan or as directed by the
Engineer-in-charge. Materials not
useful in anyway shall be disposed off, leveled and compacted as directed by the Engineer-in-charge within a specified lead. The site shall be left clan of all debris and leveled on completion
