Branston Road High School Construction Methodology & Phasing
5.0 CONSTRUCTION METHODOLOGY & PHASING
Introduction
5.1 This chapter describes the anticipated construction methodology and phasing of the
Development. Consideration of likely significant effects on the environment that may arise
during the construction phase, and any necessary mitigation measures, are provided within the
respective technical chapters of this ES.
5.2 Planning for construction is necessarily broad at this stage and may be subject to modification. This
chapter is based on reasonable assumptions and experience and allows assessment of the realistic
“worst case ” construction phase effects .
Anticipated Programme
5.3 The construction of the Development is anticipated to commence in 2016, subject to gaining
planning permission, and span approximately 2 years. Following the discharge of pre -
commencement planning conditions and a period of procurement and tendering for the
construction of the Development, project mobilisation and construction activities are likely to begin
in summer 2016. In general terms, the Development will include:
Construction of the school building from summer 2016 to spring 2018
Installation of services in summer / autumn 2016;
Construction of all external works from summer 2016 to summer 2018; and
Offsite highway improvement works from winter 2017 to spring 2017.
5.4 Construction of the new circulation roads and entrance from Branston Road, and the stripping of top
soil and cut and fill of the building footprint, car park areas and external pitches will form the
first phase of development in autumn 2016. Overall, the construction process is expected to be
completed by Summer 2018, with the school ready to receive students for the September intake of
2018. Table 5.1 shows an indicative construction programme.
Table 5.1: Indicative Construction Phasing
Activities Duration (weeks)
Set up site 4
Cut and fill building footprint 3
Access from Branston Road 8 January 2016
Construction of car parks and circulation roads 14
Substructure works 14
Frame and floors 22*
Brickwork and casting of ground floor slabs 22*
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Activities
Branston Road High School Duration (weeks)
Roofing 23*
Superstructure work (Envelope) 34*
Fit out 44*
Installation of services 8
Drainage connection 3
Hard and soft landscaping around school building 32*
Formation of running track and sports pitches 15
Offsite highway improvements 16
Construction Methodology & Phasing
* includes two week Christmas break
NB. The above periods overlap, may not happen on consecutive weeks and are indicative dependant on the Main Contractor
’s desired construction programme.
Main construction activities
5.5 No demolition is required to facilitate the constr uction of the Development. The main
construction activities associated with the Development can be summarised as:
Vegetation clearance and top soil stripping;
Site establishment;
Earthworks construction including movement of materials;
Construction of the school building;
Development of the associated sports fields and tracks; and
Hard and soft landscaping areas.
5.6 An Outline Construction Environmental Management Plan (OCEMP) has been prepared (see
Appendix 5.1) which has been produced to describe how a det ailed CEMP will be developed to
avoid, minimise or mitigate any construction effects on the environment and the surrounding
community when carrying out the associated construction activities. the Further information on
CEMP is provided below.
Outline Construction Methodology
Construction Machinery
5.7 Consideration has been given to the types of plant that are likely to be used during the
construction works. The plant and equipment likely to be associated with each key element of the
construction process is set out in Table 5.2.
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Branston Road High School Construction Methodology & Phasing
Table 5.2 Plant used during the Construction Process
Type of Equipment Required for Construction
Phase
Tracked/wheeled 360 degree excavators Site
Dumpers Setup
Mobile cranes and Site
Hand held tools including breakers (pneumatic and hydraulic)
Power tools including percussion drills, cutting disks, pipe -
threaders
Piling equipment
Wheel washing plant
Scaffold
Mobile access platforms
Delivery trucks
Skips / Skip trucks
Forklift trucks
Ready mix concrete wagons
Concrete placing booms & pumps
Road sweepers
Establishment
5.8 Over a period of four weeks, a number of site management proposals will be implemented to
enable the setup of the Site. The aim of the site setup measures is to minimise risk to the
environment and the risks of accidental discharge of pollutants , provide welfare facilities for staff,
ensure security of the site and promote efficient use of resources. Such facilities will include:
Temporary protective fencing and lighting;
Gatehouse and site security facilities;
Temporary car parking, offices and welfare facilities;
Temporary and secure equipment storage areas;
Emergency spill kits;
Dust management facilities including wheel washing;
Material and plant storage areas; and
Material recycling and waste segregation areas.
5.9 Ancillary site management procedures established during site setup and establishment will
include a strict speed limit, the storage of fuel and oil in accordance with the Control of Pollution (Oil
Storage) (England) Regulations 2001, refuelling will only be undertaken by trained personnel
in a designated area designed to contain contaminated runoff, and the removal of sewerage
effluent from the site office and welfare facilities using a vacuum tanker, if no sewer connection is
available.
5.10 Full details of the site management proposals will be included in the CEMP.
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Branston Road High School Construction Methodology & Phasing
Access Road Construction and Enabling Works
5.11 The initial stages of the construction will include t he new permanent access routes into the
Development, secondary internal circulation roads and car parking areas. It is anticipated that the
internal roads will be constructed up to base -course level and used for construction traffic routes as
the Development is built. A temporary car park constructed to base course level for all construction
personnel vehicles will be developed adjacent to the offices and welfare accommodation.
5.12 No demolition is required as part of the construction, however, e nabling works would take place
in parallel with the access road construction and comprise :
Arboricultural works including:
o protection of trees and vegetation to be retained;
o removal of trees and vegetation where applicable;
Vegetation and general clearance;
Ecological works, where required;
Location and demarcation of existing on site services, where required;
Installation of any site hoardings;
Installation of security, health and safety or tree protection fencing;
Installation of any site or traffic management signage;
Groundworks including topsoil stripping, profiling, and stockpiling for later use;
Drainage mains connection; and
Installation of temporary surface water management measures.
Excavation and Sub-Structure Works
5.13 Excavation work, preparation of ground works and installation of foundations would take place at
this stage. The topsoil would be stripped off using an excavator and placed in a stockpile using a
dumper truck. Soil bunds would be profiled to reduce erosio n that could result in windblown
emissions, and located outside of any tree root protection areas, as applicable.
5.14 Sub-structure works may involve:
Surplus soil will be excavated to level the Site in a cut and fill operation;
Localised re-grading within the Site to create level development platforms for the structures;
Excavation for foundations;
Installation of any reinforcement measures, geotextiles or geomembranes, footings, piles or
piers;
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Branston Road High School Construction Methodology & Phasing
Trenching to allow installation of any below ground services; and
Installation of brickwork, ground slabs (ground bearing or suspended block) and supporting
beams.
Drainage works
5.15 Part of the sustainable drainage (SuDS) system will be constructed during the infrastructure works
when installing the temporar y surface water management measures.
5.16 All site works will be undertaken in accordance with the Environment Agency ’s ( EA) Pollution
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Prevention Guidance Note 6 ‘Working at Construction and Demolition Sites ’ . Construction
vehicles will be properly maintained to reduce the risk of hydrocarbon contamination and will only
be active when required. Construction materials will be stored, handled and managed with due
regard to the sensitivity of the local water env ironment and thus the risk of accidental spillage or
release will be minimised.
5.17 Construction contractors will also take full account of the requirements of the EA ’s General Guide
ii
to the Prevention of Pollution of Controlled Waters (PPG1) and guidance set out in PPG2 (Above
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Ground Oil Storage Tanks) and PPG3 (The Use and Design of Oil Separators) .
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5.18 In accordance with the Control of Pollution (Oil Storage) (England) Regulations 2001 , any tanks
storing more than 200 litres of oil will have secondary bun ding. Bunding will be specified having a
minimum capacity of “not less than 110% of the container's storage capacity or, if there is more
than one container within the system, of not less than 110% of the largest container's storage
capacity or 25% of thei r aggregate storage capacity, whichever is the greater. ” Any above
ground storage tanks will be located on a designated area of hardstanding. No underground storage
tanks will be used during the construction period. Storage of liquids such as degreasers, solvents,
lubricants and paints will be in segregated, bunded enclosures.
5.19 The construction drainage system will be designed and managed to comply with BS6031 “The
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British Standard Code of Practice for Earthworks ” , which details methods that should be
considered for the general control of drainage on construction sites. Further advice is
contained within the Geotechnical Design, General Rules (BS EN 1997) in
vii
which should be read
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conjunction with Basis of Structural Design (BE EN 1990) .
Construction of Superstructure
5.20 This stage will involve the construction of the main building structure and will include the
pouring of concrete, the installation of steel frames, load bearing brick walls, reinforced
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