View source for Holywell School, Flintshire

==Article in [http://www.newsteelconstruction.com/wp/wp-content/uploads/digi/NSC_Feb16_digi/index.html#/22/ NSC February 2016]==
{{#image_template:image=File:Holywell_School-1.jpg‎|align=right|wrap=true|caption=Model showing the project’s challenging shape|width=400}}
'''Wales gets flagship school'''<br>
Steel [[Construction|construction]] has ensured a challenging shaped school has been designed and [[Construction#Steel erection|erected]] successfully.<br> 

One of the first projects in Wales’ 21st Century Schools Programme is currently under [[Construction|construction]] in Holywell, Flintshire. The flagship £30M [[Braced_frames|steel-framed]] super school will provide a combined facility for 600 high school students and 315 infant and junior school pupils. The new build will replace the existing High School, which is situated next to the [[Construction|construction]] site, and two local primary schools.

Building work began in January 2015 and completion is set for this coming summer, in time for the schools to settle in for the autumn term. At this point main contractor Galliford Try will begin phase two of the scheme that consists of demolishing the old [[Education_buildings|school buildings]] to create new sports pitches.

In contrast to many of the schools currently under [[Construction|construction]] in the UK, Holywell has an elaborate [[Design|design]] combining a three-storey secondary school with a single storey primary school, both housed within two elliptical-shaped zones.

Apart from the sports hall, drama hall and dining areas, the entire school is architecturally challenging as it is [[Fabrication#Bending|curved]] both on plan and elevation. The steel frame forms a stretched figure of eight shape, with the primary school formed around an open elliptical-shaped courtyard in the top loop and a three-storey [[Steel-supported_glazed_facades_and_roofs#Atrium Roofs and Sky lights|atrium]] infilling the lower loop, which is surrounded by the secondary school classrooms.

Between the two elliptically-shaped areas there is a two-storey sector which is not curved as it contains the school’s main entrance, a drama studio, kitchens and a dining hall. The other non-curved part of the steel structure is the secondary school’s sports hall, which is connected to the end of the three-storey element. “The curves respond to the sloping site as there is a 2m-drop from one end of the building to the other,” says Galliford Try Senior Project Manager Graham Ford. “To compensate for this, there are a couple of steps incorporated into the ground floor slab.”

Beyond the new build’s footprint the slope becomes even more pronounced as the school’s land descends downwards towards the estuary of the River Dee. A lot of earthmoving will be required during Phase two of the works to level the ground for the new sports fields. The sloping topography however does mean many of the new school’s classrooms will have stunning views across to the Wirral.
{{#image_template:image=File:Holywell_School-2.jpg‎|align=left|caption=The school’s curvature
responds to the site’s slopes|width=600}}
A large earthmoving programme was also needed to create a level platform for the new school. Once this was completed bored pile foundations were installed in readiness for the [[Construction#Steel erection|erection]] of the steel frame.

Locally-based steelwork contractor EvadX began its [[Construction#Steel erection|erection]] programme in the middle of the school, building the reception area first. This area is stablised by a [[Concept_design#Concrete or steel cores|staircase core]], and once up it allowed the erectors to work from here in both directions, with two gangs each having their own [[Construction#Mobile cranes|mobile crane]]. “Prior to erecting the steelwork we had to make use of the architects/engineers’ [[Modelling_and_analysis#Modelling|model]] and then manually load it into our own Tekla model to make sure all of the project’s challenging radii were checked,” says EvadX Project Manager Steve Morris. 

Setting out all of the steelwork during the design phase and avoiding any clashes between steel members and [[Service_integration|services]] required a high level of accuracy. “We used Level 2 Building Information Modelling (BIM) for this project, whereby all trades used the same [[Modelling_and_analysis#Modelling|design model]],” adds Waterman Structures Project Engineer James Mackey. “It would have been difficult to [[Design|design]] this school without using BIM.”

Even though the majority of the classrooms are set out around either a courtyard or an [[Steel-supported_glazed_facades_and_roofs#Atrium Roofs and Sky lights|atrium]], they do follow a standard design. Set out around the radius of their respective ellipses, the primary classes are generally 7m wide, laid out in pairs with a shared cloakroom positioned between each pair of rooms. Because the primary school part of the building is single storey, these classes benefit from an airy 5m-high roof beneath a double-pitched roof.
<gallery widths=250px heights=200px> 
Image:Holywell_School-3.jpg|The three-storey secondary school under [[Construction|construction]]
Image:Holywell_School-4.jpg|Overlooking the sports hall during the [[Construction#Steel erection|steel erection]] programme
Image:Holywell_School-5.jpg|Classrooms have views across the River Dee
</gallery>
<br>
The [[Design|steel design]] for all classrooms has steel columns positioned along the exterior elevations and in the corridors, leaving the study areas column-free. The majority of the steel frame’s [[Braced_frames#Vertical bracing|bracing]] is located in the partition walls, as well as in stairwells.

The main difference between the primary school classes and the secondary rooms, in terms of size, is the fact that the latter do not have interconnected cloakrooms, although some can be enlarged and combined with their neighbouring classrooms via sliding partitions, thereby adding flexibility to the design.

One of the main steelwork design challenges involves the three-storey [[Steel-supported_glazed_facades_and_roofs#Atrium Roofs and Sky lights|atrium]] within the secondary school zone. Internal corridors ring the [[Steel-supported_glazed_facades_and_roofs#Atrium Roofs and Sky lights|atrium]], while link [[Bridges|bridges]] on the first and second floor span the void. “The architectural desire for the [[Steel-supported_glazed_facades_and_roofs#Atrium Roofs and Sky lights|atrium]] was for a large column-free space so we had to set back all of the corridor columns, so all of the [[Residential_and_mixed-use_buildings#Balcony systems|steelwork balconies]] on the first and second floors are cantilevering,” says Mr Mackey. Only two columns are visible within the [[Steel-supported_glazed_facades_and_roofs#Atrium Roofs and Sky lights|atrium]] and these are two [[Steel_construction_products#Structural hollow sections|CHS columns]] that support the 18m-long link [[Bridges|bridges]].
{{#image_template:image=File:Holywell_School-6.jpg‎|align=right|wrap=true|caption=The primary school after the [[Building_envelopes|cladding]] had been installed|width=300}}
Adjoining the three-storey secondary school is a four-court sports hall, formed by a series of 18m-long rafters. This is one of only two areas within the project that has straight elevations. The hall’s roof features two steps with corresponding column lines dividing the hall into the main sports area, changing rooms within the first step and a corridor beneath the lowest roof.

Summing up, Mr Ford says: “This is a very complex steel frame, especially in the areas were low level parts of the building meet high level zones. The project would not have been possible without coordination between all of the project team and subcontractors.”

{|class="wikitable" width="400"
|-
|'''Architect'''||Lovelock Mitchell
|-
|'''Structural Engineer'''||Waterman Structures
|-
|'''Steelwork Contractor'''||EvadX
|-
|'''Main Contractor'''||Galliford Try
|-
|'''Main Client'''||Flintshire County Council
|}

[[Category:Case studies - Education buildings]]