TECHNICAL SUBMISSION PROJECT SPECIFICATION SECTION C PART 2
SECTION 3: GROUND INVESTIGATION
IA 12/13 C 057 ST C2/S3/1 February 2013 Construction and Upgrade
of Rayyan Road Project 7: Contract 1 West of New Rayyan R/A to East
of Bani Hajer R/A
PART 3 PITS AND TRENCHES 3.2 PITS AND TRENCHES GENERALLY 3.2.5
Backfilling and Restoration Add new paragraph 5 as follows: 5
Restored surfaces shall match the existing surface in both level
and appearance.
TECHNICAL SUBMISSION PROJECT SPECIFICATION SECTION C PART 2
SECTION 3: GROUND INVESTIGATION
IA 12/13 C 057 ST C2/S3/2 February 2013 Construction and Upgrade
of Rayyan Road Project 7: Contract 1 West of New Rayyan R/A to East
of Bani Hajer R/A
PART 4 SOIL SAMPLING 4.4 GROUNDWATER SAMPLES Delete paragraph 1
and substitute with the following: 1 Groundwater samples shall be
taken from each exploratory hole where groundwater
is encountered. Where more than one groundwater level is found,
each one shall be sampled separately. Where water has been
previously added, the water shall be baled out before sampling so
that only groundwater is present. The sample volume shall not be
less than 0.25 litre.
Where groundwater is to be sampled from rotary drilled holes
using water flush the sample shall, where practicable, be taken at
the start of the subsequent shift; the hole having been baled out
at the end of the previous shaft. A sample of the flushing water
shall be taken for analysis at the same time.
TECHNICAL SUBMISSION PROJECT SPECIFICATION SECTION C PART 2
SECTION 3: GROUND INVESTIGATION
IA 12/13 C 057 ST C2/S3/3 February 2013 Construction and Upgrade
of Rayyan Road Project 7: Contract 1 West of New Rayyan R/A to East
of Bani Hajer R/A
PART 5 IN-SITU TESTING, INSTRUMENTATION AND MONITORING 5.2
TESTING, INSTRUMENTATION AND MONITORING GENERALLY 5.2.2
Instrumentation and Monitoring Add new paragraph 7 as follows: 7
Previously constructed boreholes and piezometers within the Right
of Way as well
as those put down by the Contractor shall be suitably marked and
protected for as long as practicable during the execution of the
Works. The Engineers written agreement shall be obtained before any
of these are destroyed. Any destroyed without prior agreement shall
immediately be replaced by the Contractor. Regular monitoring of
water levels in these piezometers and boreholes is to be conducted
throughout the entire period of the Works. The regularity of the
monitoring shall be to the written approval of the Engineer.
5.3 TESTS 5.3.2 Tests in accordance with BS 5930 Add new
paragraph 2 as follows: 2 For all in situ permeability testing the
Contractor shall establish and record all
relevant data relating to the history of boring the hole and the
apparent natural groundwater level. He shall interpret the test
results only once conditions at the time of test have become
established by subsequent monitoring.
