View source for Cranswick poultry facility, Eye, Suffolk

==Article in [https://www.newsteelconstruction.com/wp/wp-content/uploads/digi/NSC_April19Digi/pubData/source/NSC_April19Digi.pdf#page=12 NSC April 2019]==
{{#image_template:image=File:Cranswick_poultry_facility-1.jpg‎|align=right|wrap=true|caption=The steel frame was [[Construction#Steel erection|erected]] in 14 weeks|width=400}}
'''Poultry farm lands in Eye'''<br>
Leading UK food producer Cranswick is constructing a new £60M [[Single_storey_industrial_buildings|steel-framed]] poultry facility in Eye, Suffolk.

A greenfield site on a rural airfield in Eye, Suffolk is being converted into a new state-of-the-art poultry facility by food producer Cranswick. The company says the new site, which is due to open later this year, will be one of the most efficient and sustainable poultry processing facilities both in the UK and Europe, supplying leading UK retailers and other manufacturers with fresh produce.

The site will employ over 700 people, with approximately 300 new jobs created in the region and the remaining staff transferred from Cranswick’s existing production facility. Cranswick already operates three food processing sites and runs pig and chicken farming operations across Norfolk and Suffolk; employing over 2,000 people in the region. This latest project is the largest single investment it has ever undertaken.

In a bid to bring as much benefit to the local community as possible, Cranswick has awarded over £10M of the project costs to local contractors. This has seen Kings Lynn-based Trundley Design Services being contracted to undertake both architectural and [[Design|structural engineering]] responsibilities for the project, and Norfolk-based A C Bacon Engineering being subcontracted to [[Fabrication|fabricate]], supply and [[Construction#Steel erection|erect]] the steelwork.

Trundley Design Services Managing Director Ian Trundley says: “After over a year in the designing and planning phase with Cranswick, we are delighted that the building of the new food processing facility has commenced and is currently on schedule for completion in October 2019. It is very rewarding to see the [[Construction|building work]] come to life and our dedicated project team remain focused on the continued delivery of this prestigious project.”
{{#image_template:image=File:Cranswick_poultry_facility-3.jpg‎|align=left|caption=Three 3.8m-deep [[Trusses|trusses]] create internal column-free space|width=600}}
Work on site kicked off last year with another local firm completing the groundworks contract. This work included the excavation of more than 80,000t of earth, in order to flatten and prepare the plot. Supporting the [[Portal_frames|steel frame]] over 10,000t of concrete pad foundations were also installed.

The poultry facility consists of one large [[Portal_frames|steel-framed]] structure which is 219m long and 116m wide at the widest part, with a maximum height to the underside of the eaves of 10m. “The building required the [[Single_storey_industrial_buildings#Flexibility and adaptability|flexibility of a clear span]] with minimal internal columns. Due to the complexity of the internal equipment layout the steelwork had to be effectively designed around this restriction. Based on this, the only material that could fit the criteria was steel,” adds Mr Trundley. 

The food production part of the facility accounts for 189m of the overall length, while the rest is occupied by a two-storey office area and an 11m-long entrance pod. The majority of the production area is 78m wide and consists of a twin [[Portal_frames|portal frame]] with two 39m-wide spans. For approximately one third of the production area’s length there are attached mono-pitch structures on either side that provide extra workspace and bring the structure up to its maximum 116m width. 
<gallery mode="packed" widths=350px heights=235px> 
Image:Cranswick_poultry_facility-2.jpg|The building has a maximum width of 116m
Image:Cranswick_poultry_facility-4.jpg|The [[Building_envelopes|roof cladding]] commenced once steelwork was complete
</gallery>
<br>
“To form the roof of the structure we [[Fabrication#Handling and transportation|delivered]] most of the rafters to site in 18.5m lengths, [[Portal_frames#Connections|spliced them together]] on the ground to form 39m-long sections and then lifted the complete pieces into place,” explains A C Bacon Engineering Commercial Manager Ryan Bailey. A C Bacon Engineering used two of its own 60t-capacity [[Construction#Mobile cranes|mobile cranes]] for the [[Construction#Steel erection|steel erection]] programme, one positioned in each portal span. They then both worked their way down the entire frame [[Construction#Steel erection|erecting]] the two sides simultaneously.

Adding some more floor space to the production area, there is approximately 6,000m<sup>2</sup> of [[Single_storey_industrial_buildings#Mezzanines|mezzanine flooring]] within both [[Portal_frames|portals]]. Based around a 6.7m column [[Concept_design#Floor grids|grid pattern]], the [[Single_storey_industrial_buildings#Mezzanines|mezzanine levels]] as well as the two-storey office block, are formed by steel beams supporting [[Floor_systems#Precast units|precast slabs]].
{{#image_template:image=File:Cranswick_poultry_facility-5.gif‎|align=right|wrap=true|caption=Model showing the steel frame, with office block and entrance hub on the right|width=400}}
Creating more column-free space, two 26m-long × 3.8m-deep [[Trusses|trusses]] have been installed along the structure’s valley line. By installing these two 8t [[Trusses|trusses]], a total of eight central columns were able to be omitted. The two [[Trusses|trusses]] were the heaviest lifts on the job. For ease of [[Fabrication#Handling and transportation|transportation]] they were brought to site in three pieces, which were then assembled into 26m-long sections and lifted into place.

“There are always challenges on a project of this size,” sums up Mr Bailey. “Careful planning was needed to make sure enough steelwork was [[Fabrication|fabricated]] to ensure the initial 14-week build programme was achieved.”

Cranswick Country Foods Group Engineering Director Graeme Watson adds: “We have forged a close working relationship with all of our contractors and suppliers. While A C Bacon are new additions to the contract supply base, they are definitely keepers. We have very tight time lines to adhere to and the team, including A C Bacon, have delivered on every front. Since acquiring Crown Chicken in April 2016, Cranswick has committed to ensuring work on the site is carried out by local companies wherever possible. We are all looking forward to our existing colleagues joining together with new additions to the workforce in the Autumn of this year.”

{|class="wikitable" width="400"
|-
|'''Architect'''||Trundley Design Services
|-
|'''Structural Engineer'''||Trundley Design Services
|-
|'''Steelwork Contractor'''||A C Bacon Engineering
|-
|'''Main Contractor'''||Cranswick Country Foods
|-
|'''Main Client'''||Cranswick Country Foods
|}

[[Category:Case studies - Single storey industrial buildings]]