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In accordance with the CAR Simple Licence Application, this
document provides anoutline method statement for the proposed works
identified under Contract 1. Theoutline method statements are for
the following construction works;
001 Bowling Green Reinforced Concrete Retaining Wall, 002 Rock
Armour Bank Protection Works, 003 East Pow Burn Sheet Pile
Retaining Wall.
The contractor will comply with environmental constraints as
outlined in the ContractDocuments and Construction Method
Statement.
Contractor generic requirements relating to Contract 1
construction works;
Contractor to take access to sheet pile location through Vector
Aerospace. Allappropriate permissions to be acquired prior to
taking access via security gates. Contractor to erect suitable
temporary fencing around area of proposed sheetpiling to provide
protection for the public and to maintain site security for
VectorAerospace.
Contractor to liaise with SEPA regarding timing of rock armour
works andimplement appropriate flood warning measures during the
works. Contractor to conform to environmental constraints contained
within the ContractDocuments regarding working hours and
permissible noise levels. Contractor shall adhere to all relevant
Pollution Prevention Guidelines ( PPGs) published by SEPA.
Contractor staff to wear appropriate PPE at all times during site
operations. Contractor shall not deviate from their submitted and
approved detailed methodstatement without prior written
authorisation from the Engineer. Contractor must adhere to
Construction Environmental Management PlanCEMP) and all Special
Requirements contained within the Contract Documents.
Contractor will be responsible for reviewing all services within
each element ofContract 1. Appropriate warning signs and goal posts
to be placed either side ofservices in close proximity. Welfare
unit will be on site for the duration of the works. The Contractor
will be directed to follow all relevant and specific requirements
ofthe scheme' s SEPA Licence, which will be referred to in the
WorksSpecification.
On contract award the Contractor will provide detailed method
statements priorto the construction work.
Note: There are no proposed in- channel works for this element
of the works.
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Almondbank Flood Protection SchemeOutline Construction Method
Statements mouchel
Contractor to prepare a detailed method statement for the
proposed works forerecting an RC Floodwall around the perimeter of
the Bowling Green, which shallinclude [ as a minimum] the following
requirements:
Contractor to set up site preliminaries including offices
/messes and site boundarysafety fencing around the bowling green,
parts of the access road and parkingarea. All appropriate access
permissions to be acquired from affected landowners. Contractor to
conduct trial pits (hand dug) to confirm the locations of
existingservices and take reasonable measures to protect services
affected by the works. Contractor will commence site clearance
operations, this will include removal ofvegetation, garden
furniture, garden path surfacing, slabs and the contents ofsheds
either to be carefully stockpiled for re -use or disposed of in a
licensed tip. Contractor will commence demolition operations
consisting primarily ofremoving an existing brockwork boundary wall
and two existing timber sheds. The Contractor will adopt safe
methods of working to ensure the existing walland sheds will not be
prone to collapse during demolition operations. Thecontractor will
also have special measures in place as directed by SEPAguidelines
to prevent any demolition debris and other pollutants entering
thewatercourse. This will include ensuring all construction plant
and storage areaswill be set back from the watercourse and river
banks. Contractor will excavate foundations for the proposed flood
wall. Foundations areshallow, therefore no temporary works such as
sheet piling are envisaged to berequired for excavations. Where
possible, existing turf /topsoil will be stockpiledand re
-used.
In the unlikely event the findings of Ground Investigations
specify a requirementfor additional seepage protection, a membrane
of non - structural sheet piles willbe installed beneath, or in
front of, the proposed RC flood wall. Contractor will erect the
proposed flood wall reinforcement, shuttering includingexpansion
joints, and cast concrete in -situ. All formwork will be checked
forleaks/ bleeding during pouring operations and any identified
instances of groutegress will be immediately plugged and cleaned
away. The contractor will ensureall surplus concrete /grout is
transported away from the site and disposed of in alicensed tip.
After the flood wall has cured sufficiently, the concrete set
beneath existingground levels will be waterproofed with layers
bituminous coating applied byroller or brush. The wall will then be
clad in brickwork. Material spills ofbituminous material will be
cleaned away as appropriate to prevent contaminatingthe soil.
New sheds will be installed to replace the existing. The
landscape and gardenpaths /furniture etc will be restored.
The contractor will remove all trace of the preliminary items
including temporaryfencing, messes and stores.
Other requirements:
Any portable compressors or generators will be provided with
spillage containmentunits in accordance with the Contract Special
Requirements to capture any leakagefrom plant
Spill kits will also be present at the site at all times.
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Almondbank Flood Protection SchemeOutline Construction Method
Statements iimolAchel ill
Contractor shall develop a detailed method statement for rock
armour bank protectionworks, which shall include ( as a minimum)
the following requirements:
Access to the site will be via the road access to the Playing
Field and PlayingField Pavilion.
When using access roads banksman will be aware of pedestrian
movement andmake sure site traffic passes safely. When working on
or near riverbank machine operatives will take cognizance ofground
conditions before working in or adjacent to the river. The site
will have a temporary fence in place to prevent unauthorised access
tothe river.
An anti - pollution barrier and appropriate method of trapping
sediment will bedeployed along the river to prevent any spillages
escaping downstream. Contractor will ensure they are using bio-
diesel in machinery when working closeto the watercourse.
Construction work for the lower half of the revetment atibeneath
river bed levelto be undertaken during low flows. Check condition
of the existing rock armour revetment. Prepare ground for
construction of Main Street surface water outfall. Using an
excavator place foundation and toe scour rock below outfall.
Install surface water outfall and protect with rock armour.
Construct protective concrete casing for gas pipe on riverbank.
Excavator to work from the top of the right riverbank, wherever
possible, preparing the length of riverbank for geotextile and rock
armour placement. Working from upstream to downstream lay
geotextile layer along the riverbank, construct the lower half of
the rock armour revetment from the riverbed level tohalfway up the
bank. Continue along the entire length of the revetment. Repeat
process for the upper part of the bank.
At the downstream end tie into the existing bank profile once
Playing FieldPavilion and Scottish Water outfall have been
removed.
Re- profile and seed soil behind with appropriate amenity
mix.
a
Contractor shall develop a detailed method statement for sheet
pile installation atVector Aerospace, which shall include ( as a
minimum) the following requirements:
Sheet piling location to be scanned for existing or out -of-
service utilities prior toany construction works. Sheet piling
location to be set back from river bank as per drawing 1033064-
1600 -001.
Contractor to keep all plant remote from East Pow Burn.
Machinery is notpermitted to enter the East Pow Burn for Contract 1
sheet pile installation works.
Sheet piles are set back approximately 11 metres horizontally
from normal flowchannel, which shall provide a sufficient buffer
strip for pollution prevention.
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Almondbank Flood Protection SchemeOutline Construction
MethodStatements
l
Any portable compressors or generators to be provided with
spillage containmentunits in accordance with the Contract Special
Requirements to capture anyleakage from plant.
Contractor to install approximately 41 linear metres of sheet
pile wall at thelocation shown on drawing number 1033064 - 1600
-001. Contractor to employ hand - digging to a depth of 1. 2 metres
below existingground level to ensure no utility services or tree
root will be damaged by pilingoperations.
Contractor may ( as an alternative) provide a detailed method
statement formechanical excavation to 1. 2 metres depth with a
toothless bucket andappropriate, constant supervision of excavation
works. Mechanical excavation
methodology must be approved by the Engineer prior to
commencement andmust demonstrate a suitable thin scraping method
for achieving the depthrequired without risking damage to buried
plant or tree roots. Turf /topsoil to be set aside and reused by
the Contractor wherever possible, stockpiled adjacent to the works
and kept remote from the East Pow Burn toprevent sediment run -off
into the Burn as a result of site works, rainfall or anyother
external factor. Any excess material will be removed from site and
eitherrecycled on a separate project or taken to an appropriate
facility. Contractor to install piling platform and install piling
equipment on platform. Contractor to ensure accurate pile
installation via use of any proprietarytemplate /guide structure
for the particular product used. Contractor to install sheet piles
sequentially using a crawler rig (or approvedequivalent) and the
appropriate driving methodology and pile protection to thedesigned
depth and to the top of sheet pile wall levels required in the
Contract. Contractor to liaise with the Engineer throughout sheet
pile installation andhighlight any locations where difficulty is
encountered installing piles through thealluvial strata.
Contractor shall undertake water sampling downstream of the
sheet piling worksas directed by the Engineer, in accordance with
SEPA and Vector Aerospacerequirements.
Contractor shall take cognizance of all overhead obstructions
at, and on theapproaches to, the site within the detailed method
statement.
Contractor shall provide measures for recording wind speeds
during sheet pileinstallation and include within the detailed
method statement a procedure forsafely dealing with high wind
speeds /gusts. Contractor shall provide a methodology for testing
of installed sheet piles toensure successful pile interlocking and
acceptable condition of driven piles. Contractor shall reinstate
the grassed area and security fence on VectorAerospace land to the
satisfaction of the Engineer.
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