Awards

Awards (1)

Monday, 16 July 2018 11:17

Award 1

Written by

Awards

Walmgate Bar Restoration

Conservation of historic structures can involve technically challenging engineering that requires forensic diagnosis and innovative solutions. This was particularly the case to stabilise an Elizabethan timber extension on a medieval stone gatehouse.

Walmgate Bar is located at York’s southern gateway and boasts a medieval tower, the best preserved barbican in England. on the outside and the Elizabethan extension on the inside.

Early diagnosis of distress in both the original construction and subsequent structure was a critical aspect to success of the project.

From the first inspection a hypothesis was developed:
a)Expressed circular softwood timber columns had once been load-bearing but had become only ornamental.
b)The circular stone and timber columns had replaced earlier external timber posts.
c)Current loads were entirely taken by the timber frame walls which only loaded the edge of the stone columns causing the stone to spall.
d)These hypotheses were confirmed by discovery of the original external square oak columns when cladding was removed.
The project made use of Accoya timber for the replacement of the architectural timber. A process of acetylation gives the softwood timber a life-span against decay of 2-3 times greater than standard timber.

To guard against disproportionate collapse , the timber-framed Elizabethan building needed to be able to hang/cantilever from the stone gate tower if one or both of the columns were accidentally removed
a) Anchors were drilled back into the stonework of the main tower from which the timber building could hang as a two-storey cantilever.
c) Bollards were also positioned around the building to reduce the risk of impacts.

Awards For Walmgate Bar Restoration, York
I. IStructE, Yorkshire Regional Group - The Yorkshire Structural Engineering Awards 2016, Small Structures Winner
II. ICE Sir John Fowler Award 2016 – For Projects Less Than £500,000
III. York Design Award 2016 - Winner of The John Shannon Conservation Award
IV. York Guild Of Building Craftsmanship Awards 2016 - Meets Guilds Criteria Of Excellence

Awards For Terminal Building at Askham Bar Park & Ride
I. ICE, Smeaton Award 2015 - Certificate Of Excellence

Awards For St Michael & All Angels Church, Newburn
I. Newcastle City Council, Lord Mayor's Design Awards 2009 - Commendation for Conservation Works
II. Constructing Excellence In The North East Awards 2010 - Achieving Excellence Under The Category Of Heritage

Awards For The Black Barn, Heather Thatch
I. Constructing Excellence in The North East Awards 2014 - Achieving Excellence Under The Category Of Heritage
II. Constructing Excellence National Award 2015

Awards For Holy Trinity Church, Seaton Carew
I. Hartlepool Civic Society Award 2015 - Winner Of Conservation Category

Awards for Appleby Castle
I. IStructE, Northern Counties Regional Awards 2016 - Winner of Heritage/Regeneration Category

Awards for British Ash Timber
I. IStructE, Northern Counties Regional Awards 2016 - Highly Commended for Sustainability

Awards for Harlsey Castle
I. IStructE, Northern Counties Regional Awards 2017 - Winner of Heritage/Regeneration Projects Award

Awards for Meik's Lighthouse
I. IStructE, Northern Counties Regional Awards 2017 - Highly Commended for the Heritage/Regeneration Projects Award

Awards for Middleton Lodge
I. IStructE, Northern Counties Regional Awards 2017 - Highly Commended for the Small Projects Award