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7/25/2019 MS - Sub-Base and Base Course Preparation RA-239 17 Mar 2016
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7/25/2019 MS - Sub-Base and Base Course Preparation RA-239 17 Mar 2016
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REVISION HISTORY
Rev. No. DateCONTRACTOR-MAK
Revision History ENGINEER Status of
Arova!"reare# Revie$e# Arove#
0 First Submission following
award of Contract
2
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CONTENTS
%.& "urose
'.& S(oe
).& Definitions
*.& Referen(es
+.& Safety
,.& Materia!s
.& "!ant an# Eui/ent
0.& "ersonne! 1 Resonsi2i!ities
3.& "ro(e#ures
%&.& Inse(tion an# Testin4
3
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%.& "urose
The purpose of this method statement is to outline the works sequence for Sub-Base
and Base Course work actiities and sure!ing actiities during the construction
process"
'.& S(oe
This method statement defines the responsibilities and describes the actiities and
procedures to be implemented for Sub-Base and Base Course work actiities for the
Construction# Completion and $aintenance of %oads# Bridges# Storm &ater 'rainage#Sewers and (ther Serices for %oads Connecting Sabah al )hmad and *hiran +ew
Towns -%)23, ro.ect to compl! with the contract specification and other applicable
standards"
).& Definitions
3"/ S $& eneral Specifications for *uwait
%oad 1 ighwa!s
3"2 S ealth# Safet! 1 nironmental
3"3 ersonal rotectie quipment
3"4 )FC )pproed for Construction
3"5 %F6 )pproed for 6nspection
3"7 $ ro.ect $anager
3"8 S Site ngineer
3"9 :S :and Sure!or
3", ;)
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+.& Safety
5"/ )ll equipment to be used will be pre-inspected and approed"5"2 quipment driers and operators will hae driing and operating license"
5"3 The work shall be carried out in accordance with approed ro.ect Safet!
lan"
5"4 )ll personal shall be proided with necessar! personal protection equipment
@A and gien required training to ensure that all personal inoled in the
work are aware of importance of safet! precautions"
5"5 The work will be monitored b! safet! staff that will warn# adice# and
barricade the work location where necessar!"
5"7 %egular tool-bo meeting will be held on site for construction staff to be
aware of safet! regulation and precautions to be taken for different operation"
5"8 +ecessar! warning tapes# temporar! signs# safet! barriers# traffic cones andwarning lights shall be proided during the entire duration of the work"
,.& Materia!s
7"/ Sub base and base course materials shall conform to S Clause 303"02"
.& "!ant an# Eui/ent
The contractor shall hae the option to select the appropriate t!pe# capacit! and
number of equipment necessar! to complete the work in safe working means and to
compl! with the construction schedule"
8"/ $iing lant for the sub base and base course materials
8"2 quipment
8"2"/ &heel :oaders
8"2"2 'umper Trucks
8"2"3 raders
8"2"4 ?ibrating %ollers
8"2"5 neumatic-T!red %oller
8"2"7 &ater Tankers8"2"8 )ir compressors
8"3 and tools as well as other equipment will be proided
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9"2 The Site ngineer @SA will ensure that the site preparation actiities are
conducted according to the approed $ethod Statement# and S plan"
9"2"/ nsure all necessar! approals and work permits are obtained prior tostart the work"
9"2"2 Cone! all technical data to ciil foreman and to ensure that the
foreman understood the actiities to be eecuted"
9"2"3 )rrange 1 ensure the required manpower to eecute the work"
9"2"4 nsure that work is done in accordance with this method statement and
with approed drawing and specification"
9"2"5 nsure safe working procedures are followed in accordance with the
site safet! plan"
9"2"7 repare the necessar! %equest for 6nspection @%F6sA to arrange the
consultant ngineer for inspections"
9"2"8 (rganiDe the work in a safe manner to ensure that safet! and protectieequipment are being properl! utiliDed"
9"3 The $aterial ngineer @$A will ensure that the materials being used are in
accordance with the ro.ect Specifications and approed $aterial Submittals"
e will be in charged with the field laborator! and will undertake the
necessar! tests as required for the pro.ect with the assistance from :aborator!
Technicians"
9"4 ;ualit! Control ngineer
9"4"/ %eiew all documents and test reports"
9"4"2 nsure that all other discipline actiities that must be inspected within
the earthworks construction program hae been inspected and read!
for operating safel!"
9"4"3 nsure that all tests# as required on the 6nspection and Test lan @6TA
are implemented"
9"4"4 (rganiDe and allocate inspection works"
9"4"5 erform pre inspection to determine acceptabilit! prior to inspections
or tests"
9"4"7 Co-ordinate with the consultant inspectors"
9"5 :aborator! Technician9"5"/ erform sampling and conduct test as per direction from the $aterial
ngineer"
9"5"2 %eiew all laborator! results and prepare reports"
9"7 Ciil Foreman
Ciil Foremans will report directl! to Site ngineers# their
responsibilities include# but are not limited to the following=
9"7"/ Conduct the toolbo meetings and briefing for his crew workers the
potential haDards and precautionar! measures to be taken during the
ecaation process"
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9"7"2 nsure that all engaged personnel hae right and all equipment
are eperienced enough to eecute hand ecaation# and backfilling
actiities"9"7"3 Superision the different actiities during the construction process"
9"7"4 Control the workmanship qualit! b! directing and instructing his crew
workers and his operators during the eecution of the work"
9"7"5 %esponsible for proper eecution of the work# ensuring conformance
with approed drawings"
9"7"7 nsure that# all the tools 1 equipment are aailable at site to eecute
the work"
9"8 Safet! (fficer
The Safet! (fficer shall be responsible for safe eecution of work actiities in
compliance with the approed S plan 1 pro.ect S requirements"9"8"/ nsure that all S requirements are applied and implemented
according to the eneral Specification requirements while eecuting
the works"
9"8"2 nsure that the approals of work permits are obtained prior to start
actiities"
9"8"3 nsure that recommendations of workplace precautions are followed
up strictl!"
9"8"4 Stop an!
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indicated in S Section 2 @arthworksA# and that the surface thereof
conforms to the leels and slopes indicated in the approed drawings"
6n all cases the approal of the ngineer shall be obtained beforecommencing spreading of material for the sub-base course"
,"2"2 The sub-base material shall be tested for moisture content before
spreading" 6f the moisture content is less than the optimum moisture
content# adequate amount of water shall be added to obtain the
optimum content# likewise# to proide allowance for moisture lost
due to eaporation in spreading# raking# leeling# and compacting
process"
,"2"3 reliminar! trials shall be conducted at the start of the works to
determine the optimum number of passes of compaction and to
control the pre-wetting and water spra!ing for optimum moisture
content","2"4 The underl!ing surface shall be pre-wetted to increase bonding with
the new la!er"
,"2"5 The material shall be spread in la!ers on the prepared sub grade b!
motor grader"
,"2"7 Compaction shall start immediatel! thereafter# b! means of
pneumatic and steel rollers or ibrator! rollers"
,"2"8 Compaction shall start at the etreme edge sides proceeding graduall!
toward the road ais"
,"2"9 %olling shall continue until the surface has been thoroughl! and
uniforml! compacted to the required thickness as indicated on
approed drawings"
,"2", Cautions will be taken in order not to cause an! disturbances to
surrounding eisting installations and