Longsight Lane Case Study

Project Description

Project: Design, Interior Design and Construction of Extensive Extension
Client: Private Client
Contract Responsibilities : Principal Contractor
Contract : NEC3
Project Value : £401, 962
Programme : April 2018 for 20 months

The Overview

This technically challenging bespoke project, included land acquisition, Planning and Building Regulation applications, and the full design and construction of significant extensions and alterations of an existing occupied residential home. This contract consisted of completing 4 metre-deep underpinning to three sides of the existing property and adjoining neighbours boundary, tanking and a pumping station solution to a 225 square metre basement footprint surrounding three corners of the existing dwelling. The scheme added 4 new bedrooms, all with an en-suite bathrooms, and a new centrally located kitchen and living area with spacious balcony voids to enable expansive views onto the rear garden. A new ‘garden building’ forms an airy children’s play areas and ‘outdoor-in’ living space, directly linking a hidden suntrap front courtyard, the rear garden and a rear sunken courtyard with BBQ area. Downstairs a new combined living / dining area links to the sunken courtyard, and provides exceptional circulation options to the ground floor of the property and into the rear garden areas. In all, the extensions have quadrupled the size of the existing living space.
The homeowners were seeking an innovative and modern design solution which embraced the orientation of the site, to maximise light transmission into underground bedrooms, kitchenette spaces, living and dining areas. The adaptable spaces and formation of the external courtyard areas enable the homeowner to achieve expansive outdoor – in spaces, which can be utilised as utilitarian spaces yet with highly attractive finishes and features to bring to life exciting living / party and play zones.

The Challenge

The proposed development involved solutions to overcome various challenges, including restricted access and working space, client occupation during the works, technically challenging underpinning around existing structures and significant levels of design and construction interfaces from steel frame and concrete interfaces, to walk on terraced roofing solutions and rooflight co-ordination and green roofing inclusion. Gallaway achieved this build with minimum disruption, excellent planning and exceptional levels of finish. Over 120 loads of spoil were removed from the site via the unadopted farm road which provides access to the site. Concrete pumping and steel frame erections further challenged the build, leading to the requirement for sympathetic co- ordination and neighbour liaisons.

The Solution

Gallaway have been involved at all stages of the design and build programme to co-ordinate between the client, Gallaway designers, statutory authorities, suppliers and other stakeholders from acquisition of the original plot through the planning phases to final handover. The largest consideration was to work closely with the planners, designer and client to deliver the concept of space utilisation and specification solutions to enable flexibly living options to the occupants on this bespoke residential development. Gallaway have utilised their own interior design specialists to round off the project and provide interior and exterior décor, finishes, paving and lighting schemes to fulfil the client brief. External remodelling, soft and hard landscaping solutions formed the final design remit for Gallaway.

Anchorsholme Park

Project Description

Project: Anchorsholme
Client: C2V+ and United Utilities.
Contract Responsibilities: Main contractor.
Contract: NEC3.
Project Value: £2.7 million
Programme: Sept 2017 to Jan 2019.

The Overview

A design and build project consisting of the full construction of four buildings for United Utilities and Blackpool Borough Council in an £80 million redevelopment of Anchorsholme Park, Fylde Coast,
In this project, Lancashire is set to improve the bathing waters in and around the Blackpool Coastline.

The site consisted initially of parkland and a small bowling club which was to be demolished and reconstructed to a higher specification,
including a split usage building for the bowling club itself and the local authority maintenance store and mess for the park maintenance teams.

A new café and amphitheatre were constructed for the residents to enjoy, along with sports pitches, facilities, and an outside adventure playground.

The final parts of the development consisted of operations and electrical MCC building and a large control building over a 40m deep stormwater detention tank.

The existing water treatment works at Fleetwood WTW had no additional spare capacity. Therefore Anchorsholme Park was developed to include a new detention tank and outfall under the proposed new seawall and promenade for stormwater disbursal.

The Challenge

Several key stakeholders were concerned with the project, from the Principle Contractor of C2V+ to the local authority, Bowling Club members and United Utilities themselves.

The design of the groundworks and substructure to three of the buildings was undertaken by Gallaway, with ground condition considerations through variable mediums. All buildings consisted of steel frames with suitable steel finishes through specification, and the site’s coastal location presented a number of challenges with high wind loads on all structures.

Client interface on the performance specifications and end-user requirements were ongoing throughout the project. In addition, materials challenges and the selection of client-proposed materials added challenges to the build process to ensure the scheme became workable.

The project can take pride in the improvement it makes to the environment with ecological and natural conservation, water quality improvements, hydrology and flood mitigation.

The Solution

Gallaway has been involved at all design stages and builds a programme to coordinate between the client, Gallaway designers, statutory authorities, suppliers and other stakeholders.

Weekly collaboration and planning meetings ensured overlap between the Gallaway works and those of the client, and their direct specialist trades were coordinated from a Health and Safety viewpoint. Whilst ensuring environmental and quality compliances were maintained at the highest levels and ensuring programme delivery on this marquis project.

Anchorsholme park control building
Anchorsholme park
Image of Davyhulme Water Treatment Works

Davyhulme Substation, Manchester

Project Description

Project: Substation Building
Client: Scottish Power
Contract Responsibilities: New build substation construction and internal fit out
Contract: NEC3
Contract Responsibilities: £183,000
Programme: 8 weeks

The Overview

Having previously worked on Davyhulme Waste Water Treatment Works, Gallaway was appointed to construct a masonry substation building for Electricity Northwest. The project formed part of the larger £70million redevelopment of the UK’s largest Waste Water plants. The scope and specifications for the substation consisted of reinforced facing brickwork, reinforced blockwork, wind post and roof steelwork, cut timber roofing with a mixture of membrane and tiled roof finishes, external security doors and louvres, all with internal walls, decoration and plastering.

The Challenge

Gallaway was to work around the existing transformers to build the new substation building for the end user Scottish Power. Working in controlled areas, to tight specifications of high quality and full details, Gallaway had a challenging programme period to construct the building to enable Scottish Power to undertake the electrical installations and commissioning works. Subsequently, the substation provided power requirements to enable the operation of the treatment works and, as such, was firmly on the project’s critical path.

The Solution

Gallaway held regular programme and design team meetings with clients, suppliers and subcontractors to remain on the target programme and accommodate specific key sectional completion dates. As a result, coordinating Gallaway contracted works whilst accommodating access for client-based specialist trades within the live building project was achieved through full collaboration with key stakeholders.

Image of Davyhulme Water Treatment Works
Image of Davyhulme Water Treatment Works
Carrington Power Car Park

Carrington Power Car Park

Project Description

Project: Drainage and Service Enabling Works, Public Access Formation and Security Works.
Client: ESB Ireland.
Contract Responsibilities: Principal Contractor.
Contract: Client Bespoke Contract.
Contract Value: £130,000.
Programme: June 2018 for 8 Weeks.

The Overview

Carrington Power Station is a Combined Cycle Gas Turbine power station completed in Autumn 2016 and began commercial operation on 18 September 2016.

It is located on the site of a former coal-fired power station, close to the villages of Carrington and Partington in the Greater Manchester Area and 12 km southwest of Manchester City Centre. The Manchester Ship Canal and the River Mersey run alongside the site. Because the station’s site was surrounded by water on two sides, its strata were variable, so all of the buildings’ foundations were piled.

Approximately 7,850 piles were made, all of the reinforced concrete construction, with an average length of 30 feet (9.1 m) and a load of 50 tonnes per pile also due to the original Barton Power Station ground of high-risk asbestos in various areas.

The new station was constructed for £500 million and can generate 884MW of electricity (at a 58% efficiency rate); enough power to supply a million homes. Irish utility company ESB Group purchased an 85% stake in the project from Carlton Power in September 2008. The station is also a combined heat and power plant, capable of providing nearby businesses with steam if they require a supply.

Gallaway Construction Limited was contracted as Principle Contractor to ESB Group to design, manage and construct a new car park, footpaths and fencelines to an area within the existing power station site to provide the contractor with visitor parking. The contaminated land area, including asbestos-based materials, required necessary surveys and remediation as part of the construction works following the provision of the Pre-Construction and Construction Phase Health and Safety Plans.

The Challenge

Working on a live power station brought challenges with working around other trades and operatives within the Power Station. In addition to those, of course, raised by the high-risk nature of the existing ground conditions, namely due to the known presence of high levels of high-risk asbestos from the existing building, which was demolished and originally left as contaminants on the proposed new site of the power station.

The Solution

Gallaway coordinated with the client ESB energy to a high level of detail to cross-check the existing records of contaminated ground and service records. In addition, geotechnical and asbestos sampling took place to ensure the nature of the subsoils before the commencement of the works. Precontract and Construction Phase Health and Safety Plans were amended, as were the RAMS, to ensure all parties coordinated the works as necessary.

Carrington Power Car Park
Carrington Gas Facility Logo
Image of Carrington Gas Facility.

Carrington Gas Facility

Project Description

Project: Security Enabling Works and External Civil Engineering.
Client: ESB Ireland.
Contract Responsibilities: Principal Contractor.
Contract: Client Bespoke Contract.
Contract Value: £18,000.
Programme: September 2018 for 4 weeks.

The Overview

Gallaway Construction Limited were contracted as Principle Contractor to design, manage and construct enabling works for security provisions and a new pedestrian-accessed car park around an existing high-pressure mains gas facility site. The site is controlled under the remit of National Power. It provides gas supplies to the newly developed Carrington Combined-Cycle Power Plant (CCPP), using natural gas to generate 884MW of electricity.

The CCPP uses gas and a steam turbine together to produce up to 50 per cent more electricity from the same fuel than a traditional simple-cycle plant. The waste heat from the gas turbine is routed to the nearby steam turbine, which generates additional power. Carrington consists of two CCPP KA26-1 units. At operating design conditions, each CCPP unit generates 442.3 MW net output. The station generates enough power to meet the electricity needs of one million homes around the Greater Manchester region.

The Challenge

The site conditions were such that the working areas were sensitive from a security viewpoint. Due to restricted working access, all contractors are vetted, movements monitored, and a high-security presence. In addition, the site consisted of restricted space, particularly around the existing live high-pressure gas pipelines and areas around existing structures.

The Solution

Gallaway coordinated between the client ESB Energy and National Grid to ensure the scope of the works and location of existing services, sensitive elements of the site and the do’s and don’ts were clearly explained before commencements of any paperwork, let alone live works on site. In addition, Gallaway completed both the Pretender and Construction Phase Health and Safety Plans and issued the RAMS to both National Grid and ESB Group for checking and approvals before inducting all operatives onto the proposed site with the provision of permits to works and highly specific toolbox talks.

After carefully considering the existing asset drawings, the site set out after CAT scanning and planning the works. Works were still completed with hand excavations and the removal of spoil from the compound areas by hand. In addition, excavations under fencing for outcoming CCTV and ducting were completed within the day shift to maintain security provisions.

Image of Carrington Gas Facility.
Image of Carrington Gas Facility.
Carrington Gas Facility
Carrington Gas Facility Logo
Image of Whitefield Drive construction project.

Whitfield Drive

Project Description

Project: 12 Whitfield Drive, Milnrow.
Client: O’Connell East Architects.
Contract Responsibilities: Main Contractor.

The Overview

The scheme was to provide an open plan kitchen/living space extension with bi-folding doors and to extend the bedroom above to include a large rear balcony with glass hand railing to the full rear elevation of the property.

The Challenge

The extension and alterations were to improve the property for our client’s young son, who was disabled and needed an open-plan living area. The family remained in occupation of the property during the building works, which added complexity to the building.

The Solution

Close client liaison with the Architects and family was paramount to ensure the works were completed with minimum disruption and daily cleaning of the property. Considered coordination of the works and our ability to change the proposed sequencing to suit our client’s changing requirements resulted in a smooth operation and complete customer satisfaction.

Whitefield Drive residential construction project image 1.
Whitefield Drive residential construction project image 4.
1st image of Water Treatment Works Bickerstaffe.

Southport DMZ

Project Description

Project: Water Treatment Works Bickerstaffe.
Client: KMI and United Utilities.
Contract Responsibilities: Construction, Project Management.

The Overview

The existing service reservoir located at the Bickerstaffe WTW site is the hub that provides water to Southport DMZ and the local areas. The demand for this service reservoir varies from 32 to 59 million litres per day (ml/d) depending on the seasonal impact of tourists visiting Southport and the irrigation requirements of the local market gardening industry.

The Challenge

The amp 5 project consisted of constructing new water treatment works at Royal Oak, located adjacent to the existing Bickerstaffe site, with a treated water output of 13 million litres per day. Simultaneously, four existing boreholes at Melling, which had been out of service for several years, have been refurbished to be brought back into supply. In addition, an existing raw water main previously used to convey Melling water to an industrial user in Skelmersdale has been intercepted and extended to supply the new Royal Oak water treatment works.

The Solution

Gallaway’s involvement in the scheme was for constructing the superstructure and internal fit-out of the treatment and administration buildings. In addition, we constructed the top cladding façade and new roof structure inclusive of all structural steelwork and cladding to the rapid gravity feed building.

Image of Water Treatment Works Bickerstaffe.
Image of Water Treatment Works Bickerstaffe.
Second Image of Manchester Square in Blackpool.

Manchester Square, Blackpool

Project Description

Project: Pumping Station.
Client: KMI and United Utilities.
Contract Responsibilities: Construction, Project Management.

The Overview

The Manchester Square pumping station discharges screened foul and surface water sewage from Blackpool into the Irish Sea during periods of storm surge. The existing facility was handed over to United Utilities from Blackpool Council in 1990 and at this time the pumping station ans associated works were not only in a poor state of repair but also visually unattractive. This became apparent when compared to the recent improvements to the promenade, achieved as part of the renewal of the sea defences.

The Challenge

There was an immediate need to ensure that the pumps providing the storm discharges didn’t result in the pressurised chambers under the promenade failing and then leading to the collapse of the public thoroughfare. Temporary remedial works were undertaken by United Utilities which were approved by the council, however, they have not done anything to enhance the overall appearance of the promenade looking obviously industrial and out of place.

The Solution

Gallaway’s involvement in the scheme was to re-clad the existing pump station main building and to construct a new escape hatch building as well as building a single storey extension to infill a corner of the main building to create a garage area. We went on to erect a single storey extension to the seaward elevation of the main building to house the relocated pressure vessel in order to ventilate the site more  appropriately than at present. The works were designed to reinforce the building to prevent seawater ingress and increase safety of the operation.

Image of Manchester Square, Backpool.
Second image of Manchester Square, Backpool.
First image of Manchester Square Blackpool.
Image of Preston & Wigan Railway station.

Preston & Wigan Railway Station Public Toilet Refurbishment

Project Description

Project: Wigan and Preston Railway Station Public Toilet Refurbishment.
Client: Serco and Virgin Rail.
Contract Responsibilities: The temporary provision of toilet facilities and full refurbishment of the existing toilets including new hand railing, corridor cladding and stair nosing and tread works to major circulation areas.

The Overview

The temporary redirection of the general public to new toilet and wash room facilities during the course of the works and the demolition, structure support, strip out and full refurbishment of the male, female and disabled facilities to two major Northwest Railway Station platform main toilets.

The major circulation public spaces such as corridors, under track walkways and staircases refurbishments including demarcation, new wall and ceiling cladding to divert rainwater from the tracks away from pedestrian areas.

The Challenge

To work in very close proximity to the general public in these bustling railway stations to tight deadlines to ensure the seamless change over from the existing facilities to new temporary washrooms to enable the works to take place.

Taking into account sequencing and Health, safety and environmental separation of the potentially intrusive building works from members of the general public and staff was paramount.

The Solution

Careful planning, co-ordination signage and pedestrianisation of certain areas in addition to excellent public relations from all members of the Gallaway build team ensured a smooth transition during the course of the works.

The high specification and robust nature of the required works were completed to an excellent final quality and to the agreed extremely tight programme timescales.

Preston & Wigan Railway Station Refurbishment Taps.
Second Image of refurbished toilets at Preston & Wigan railway station.
Image of refurbished toilet at Preston & Wigan Railway Station.
Featured image of Preston Tunnels.

Preston Tunnels

Project Description

Project: Waste Water Treatment Works, Dry Well Building.
Client: KMI and United Utilities.
Contract Responsibilities: Construction, Project Management.

The Overview

Preston waste water treatment works in part of a £250 million pound project to improve the bathing waters in the North West. Storm water will be cleaned at the sewer network, until it is safe to go back into the rivers and sea.

The Challenge

To construct a 3.5km long 2.85m wide tunnel, situated 30m below ground level to the west of Preston and to include eight tunnel shafts. On completion, the tunnels will hold up to 40 million litres of storm water to prevent overflows into the river Ribble.

Our brief included the production of an evidence-built programme from contemporaneous site records, and a review of KMI’s accepted programmes for robustness and suitability for any delay analysis. We were also required to repair the accepted programme in line with the findings in the review above as well as the need to consider any preparation that may be needed from the impact of the resultant delays with the ground collapse at the terminal pumping station shafts. Having gathered and assessed this information we then drew up a report to identify these delays and calculated the extension of time that would be required by KMI in order to progress through the revised works.

The Solution

The joint venture is a consortium between Kier, Murphy and Interverse. The project is still in progress as part of the United Utilities amp 6.

First image of Preston Tunnels.
Second Image of Preston tunnels.
Image of Preston tunnels.