dead distiller kennedys
Transcription
dead distiller kennedys
SMITHFIELD VILLAGE . REDEVELOPMENT OF THE OLD JAMESON DISTILLERY SITE VINCENT BARRETI BSc (Eng),MSq DIC' MI StructE, MIEI' CEng CIARAN KENNEDY BSc (Eng),Dip Eng, MIEI BARRETT MAHONY CONSULTING ENGINEERS Presentedto a meeting of the Structuresand Construction Section of the IEI at The lnstitution, 22 Clyde Road, on Wednesday3rd February 1999 at 8.00pm. Synopsis This 295,000 sq. ft developmentincludes a museum,a theme hotel, bar and theatre,shops,restaurants,apartments and undergroundcarparking. A panoramic lift on the largestchimney on the site will give views at 50m above the SmithfieldPlaza. The paper describesthis exceptionally diverse and complex developmentfrom inception to completion. INTRODUCTION The site for the Smithfietd Viilage development is located on the Eastern side of the Smithfield plaza. lt is containedwithin the block bounded bv Smithfield Plaza, Friary Avenue, Bow Street and New Church Street. lt comprises the complete block except for the corner on the South Western end which is occupied by the Children,s Court. The site measuresapproximately 8 5 mx 1 2 5 m . The site at Smithfieldchanged hands a number of times subsequenfly and indeed was split up in the early 90's. Heritage Propertiesreassembledthe site between1993and 1995. old stills were either very severely damaged or in many cases had disintegratedentirely. Many dangerous buildingnoticeshad been served on the buildingand indeed the Bow Street wall had been lowered to render it safe because the timber floors behind had been burnt. Continuitywith the sites illustrioushistory was copper fastened via the inclusion of an lrish Whiskey Museum and retention of many of the features which were R E U S EO F O L D B U I L D I N G S specificto the distillerybusiness. Figurel shows the typical old bonded ARCHAEOLOGY warehouse type construction. Cast iron columns and wrought iron of mild steel In 1995 Architects A & D Wejcherl and All of the existing buildingson the site beams and timberplanks. Barrett Mahony Consulting Engineers were constructed during the life of the were appointed by Heritage Properties distillery. The site is within the area of Ltd, the Developers for the proposed potential archaeological interest and redevelopment, and planning therefore an assessmentwas carried out a applicationwas lodged in July / August at any early stage by Consultant 1995. The projectcommencedon site in Archaeologist Ms Judith Carroll. 17 December 1995 and is scheduled for substantialtrials and trench excavations completionby April 1999. were carried out and revealed nothino of major archaeological significance.In'the SITE HISTORY areas that were densely covered with buildings because of the mass and -ameson's Distillerywas foundedin 1780 natureof the buildingson the site and the at Smithfieldand the site functionedas a loads that they imposed on the ground, distilleryfrom that time until it closed in substantial foundations were provided the early 1970's. The distillerytogether and as such no archaeological finds were with the local fruit and produce markets anticipatedin these areas. ensured Smithfieldwas a thriving area throughoutthe last centuryand much of DEVELOPMENT this century. Indeed the commercial history of the area is closely allied to the In 1994 Barrett Mahony Consulting fortunes of the lrish Whiskey Industry. Engineerscarriedout an initialappraisal Figure 1. Existing Construction of the site. Practicallyall of the site was The four big Dublin Distillersof the time, built upon with lanes and yards between of new and old involved John Jameson and John Power,William multi storey brick and stone buildings. The integration the development of an understanding of Jameson, George Roe considered During slte visits between 1994 and buildings, theirformandtheir themselves the elite of the whiskev January1995 the rate of deteriorationof the existing function. A visit to the PublicRecords makersin lreland,and lrish Whiskeywai the existing buildings on the site was a vast hoardof process considereda quality productabroad. Up dramatic. A series of fires by vandals Officeunearthed '1 drawings, design drawingsand layout to the 870's these firms grew and etc. decimated some of the less rubust drawings of the Distillery. Figure2 shows prospered and enjoyed a large export features on the site. process an old layout of the Distillery trade. Up to that time Scotch malts came from various highland distilleries and The inception of the development circa1930. . 3re very varied and unpredictableand predated the current properly boom and : sUChwere no competitionfor the well the historic area regeneration plan developed lrish Whiskey Industry. (Harp). The prospect of a tight rail Essentiallylrlsh Whiskey being distilled travellingthrough the area was still a three times in pot stillswas considereda distant aspiration. Indeed for the 15 superiorproduct. months prior to this planningapplication being lodged there were no applications An lrish Civil Servant called Aeneas lodged in the Smithfieldarea, and in the Coffey patented "The Coffey Stilt" circa previous 8 years a total of only two 1947. ln the 1860's CoffeyStiilsdirecfly planningapplicationshad been lodgedin led to the developmentof Scotch blended the Smithfieldarea and these were small C Whiskeys which ultimately served to alterationswithin the lrish DistillersHead provide the real competitionfor the lrish Officebuildinglocatedimmediatelyto the Distillers. The development of finer south of this site. Currentlythe area is Scotchwhiskyby this processconsidered one of the most active in the citv from a by The lrish as "lnstantWhiskey" led to planningapplicationstandpoint. the erosion of the export market. World events in the early part of this century i.e. L I S T E DB U I L D I N G S World War l, lrish independenceand American prohibitionfurther decimated The '1895large chimney,the Smithfietd the export business. The home market wall and the stone warehouse at Bow prospered however and Jamesons Street / Friary Avenue corner were Figure 2. Old processlayout continued to operate out of Smithfield among the list 2 elements of the site. The developmentof such distilleriestook untilthey closedthe Distilleryin the early The old stone walls on the periphery of place in somewhat an ad-hoc manner 70's and rationalisedtheir productionto the site were also considered of and the locations of the various MidletonCo Cork. substantialmerit. By '1995 the kiln roofs and many of the brick surroundsto the processeswould bear this assumption Two boreholes were carried out on the out. site initlally. These revealed relatively consistentground conditionsi.e. 2.5m THE IRISHWHISKEYMAKING 3m of rubble / fill overlying a clay gravel PROCESS overlyinga limestonerock at depths up to 8m. The lrish whiskey making process is brieflyoutlined: The 17 trencheswhich were dug for the Archaeologist gave a more reasonable 1. Malting spread throughout the site and these verified the consistency of the Barely is soaked in water and loadbearingdense gravel layer. The allowedto germinatenaturally. The gravel gave N counts of between 40 and germinationis then halted and the 70. Allowable bearing pressures of barleydried. 250kN/m'?to 350kN/m, pending on the 2. Milling width of the foundationwere assumed. The advantages of the dense gravels The milled barley and malt is then were the free draining capabilityi.e. in taken to and mixed with water in extremely wet conditions the ground "mash tuns" (very large circular underfoot dried almost instantly and tanks). banks exposed proved stable over the durationof the contract. 3. Mashing SITEACCESSAND BUILDABILITY The liquid in the "mash tuns" is called"wort"a sugaryliquid. Access to the site was restricted to the North Western end and demolition 4. Fermentation proceeded from that corner. lt also became apparent early on that the The worts is then pumped from the building should be built from the "mash tuns" to the washbacks were diagonallyoppositecorner and to "back it meets with liquid yeast and is out" of the site so to speak. ln order to allowedto ferment facilitate access to the South Eastern corner it became apparent earlier on that 5. Distillation not all buildings in that corner could easily be maintained. The mash tun A triple distillationprocessin copper foundations and the brick lining stills was employed in the lrish structures for the copper stills were whiskeytradition. retained as a major feature which the Architect developed the Whiskey 6. Maturation Museum around. Apart from its impact on the skylinethe tower buildingwas of The distilledproduce is stored in oak little merit. lt was effectivelydemolished port and sherry casks. This is what and rebuilt so that reasonable gives it its distinctivecolour. construction access was facilitated. Figure 3 shows the retained elements of This process would suggest that from the site. lt can be seen from this figure grain intake, the next process is the that the development of the South malting with the associatedkilns, then Eastern corner of the site became a the millingand onto the "mash tuns" and criticalitem as did the demolitionto get subsequentlywashbacks onto the stills accessto this corner of the site. are after this the bonded warehouse. lf one looksat the layoutshownin Figure2, one would have expected the "mash tuns" to be located where the washbacks are and vice a versa. Neverthelessthe use of these old brick structures and stone structures on the site varied but in most instancesinvolved carrying exceptionallyheavy loads such as the foundationsfor the washbacksor wash tuns takingsay 30,000gallontanks etc. The loads on existing walls were large with such tanks often being 6-7m high and several floors of grain storage or bonded warehouseabove. Some old walls were calculatedto be imposingup to 600 kN/m2 on their foundationswith dead load alone. SITE INVESTIGATION hr outsidethe site to provideunhindered spacefor construction activitywithin. Externalretentionsystemswere adopted for Bow Street and Friary Avenue. Figures4 and5 showsectionsat relevant locations. Verticalig surveys revealed the existing plumb wallsto be reasonably and the design loads for the retention systemswereassumedas follows: Figure4. FagadeRetentionFriaryAve. Figure 5. RetentionBow Street lndividualwailing design load - 2Tzo/o of the total wall design load above the wailing level. Frame load - 17,% of the total dead load plus the wind load. Where possible return walls were utilised until such time as permanentstructure could be constructed to provide lateral restraint to the walls. See Figure 6 relatingto the Bow Street, Church Street corner. Figure6. Bow Street/ Church Street Kentledge was provided by concrete pipes filled with earth. The old trusses over the "mash tuns" ,,, what is now the exhibitionspace of the museum were supported by a simple frame with a concrete base to provide kentledge. SCHEMEDEVELOPMENT Many of the features of the old distillery have been retained, imitated or developedin the new development. The f-l TEMPORARY WORKS The temporary works / demolition nine storey tower house which housed pacKagewas prepared for tender in the grain conveyermachinerytogether August1995. ln as much as possible, with three chimneys have been supports to facade walls were kept maintained as dominant skvlinefeatures. Kiln roofs have been reflectedin the turret aspect of the roof design. Internally bricksurrounds to copperstills, blacksmith trusses,the retentionof old stonewalls and brickwallsall serveto reflectthe sitesformerusaoe. ACCOMMODATION Thedevelopment currently includes SITELAYOUT FLOOR AREA CERTIFICATES The sitewas naturallydividedin two by DuckLane.The Northernpartof the site North of Duck Lane comprisedthree largeblocks,namelyABC as set out on Figure7. The hotel buildinglocated Southof DuckLanebetweenDuckLane andJamesonLaneis BlockD. ln order to considerthe buildingas new build for the purpose of obtainingfloor area certificatesfor the apartment it was essential that the new structure did not rely for either vertical support or stability on old walls. lt was also a requirement that if the old walls were at sometime removed "as if this could ever happen" that the inner leaf would comply with the buildingregulations.ln any event from a structural standpointthe new structure was independent. BOW STRTIT 220Aoartments. 79 BedHotel l 35,000sq. ft. Museumincluding Theatre Uz andBar 7,500sq.ft. LeisureCentre 3,000sq. ft. Offices 32,000sq.ft. Commercial/ Retail Recording Studio 132SpaceUnderground Carpark Twothroughlaneways 3,000sq.ft. Balconies sr/lTt_lF'f LD 13,000sq.ft. OpenSpacesandTerraces Figure7. Site Layout 3,000sq.ft Courtyard Approximately 80%of the apartments are n'.'vided with their own balconv or q9E. COSTEFFECTIVE STRUCTURE a x & O :) r (j South of Jameson Lane The lrish Whiskey Museum is located within the old walls of the distilleryat this corner. This area was further subdivided into Block E which comprisedthe multi storey apartmentsover the basement,ground, first floor and Block F which comprised the Museum Exhibitionspace and the stonewarehousebuilding. The plan format was developedby the Architectand retains many of the old facade features of the distillery site. Large circularcourtyardswere provided The hotel building is located south of in the Northernhalf of the site. The Duck Lane facing the SmithfieldPlaza Southernhalf of the site design was between Duck Lane and the Children's dictatedsubstantially by the requirement Court. The RecordingStudio is annexed to retain the existing buildings. to the Hotel Block (Block H). Table 1 Apartmentsare generallylocatedabove summaries the overall accommodation firstand secondfloor. lt is the contention withineach of the blocks. of the Authors that the most effective constructionfor such cellular type buildingsas apartmentsis loadbearing B l o c k No. Floors Type masonry and precast concrete floors. This form of constructionis considered appropriatebothfrom a cost standpoint A 5 / 6 Floors New Build but also from the ooint of view of over urilisationof the elementsof structure Basement have to be there to provide B 4 l7 Floors New Buildwithin cohpartmentalisation. over Old StoneWall Basement Commercialand other activitiesare 6 i 7 Floors New Build mostly located at ground floor level. over These in effect warranted transfer Basement structures to be locatedat eitherfirstfloor D 4 / 5 Floors New Build or in the caseof the museumbuildingat secondfloor. An underground carparkin E 6 i 7 Floors New Buildwith the Northernhalfof the sitewarrantedinOld Retained situ concreteconstruction.This in-situ StoneWalls '1/ 2 Storey Refurbishment concreteframe construction was carried F generallyto transfer level where the Museum loadbearing masonry and precast Space concretecarriedthe variousfloorsabove L: 6 Storey New Buildwith this level. Curvedfacadesabovetransfer over Old BrickWalls level were generally facilitated by Basement providingcurved in-situ concreteedge L.l 3 Storey New Build beams with in-situ infill to the faceted Dome precastslab. Tablel-SiteLayout ln the stone building (redevelopedas offices and part of the Museum) ihe existingwalls were used as support for the new structure. EXPANSIONJOINTS Figure 7 also shows the locationof the main expansion jolnts within the develooment. Buildings within these expansion lines were treated as entities in themselves. ln many cases indeed these expansion joints were defined by the extent of the usage type i.e. basement carpark line, museumetc. CARPARKING Given the ambitious nature of the plan layoutoverhead,the rationalisation of the carparkingspace became a demanding project in itself in the early stages of the development. Carparking and carpark numbers inevitablywould be a trade off against what's a practical structure to support the overhead layout. Certain areas of the plan (for an effective carparking layout) became difficult to utilise and counter productive and it became apparent that the area under Block A for instance and the ramp entrances were not viable as quality carparkingspaces. Early discussionwith Dublin Corporation's Building Control Section resulted in the adoption of a concrete carpark base surface. DESIGNPARAMETERS Aoaatmenta Doad Load 200 H.C Llnil 65 Sqeed Fini6hes Altemativ€ D6ad Load 150 H.C.Unil kN/nr. 2.56 1 56 Courtvard Dead Load kNlflf 20 10 Imposed Partitions --77kN/m" 3.0 lmposed Load kN/m' lmposed Load kN/m' 4.1 Ground Floor/ Ofiice€ & Shoos D6ad Load kN,h, 200 1.1.C. unit b5 SCtOed Finishes lmposod Load 2.56 1.56 0.50 4.6 Imposed Pafitions ---- 50 1.0 kN/rn: lmpos€d Load kN/m' 300 H.C. Unit 3.55 BS 5400 Bridge LOAO HA 120mmScreed 50 Sand 100 BlockPaving 2.76 0.90 1.80 90 BLOCKEF RetainedFacade Block EF is situated at the South East cornerof the site and was the first block to begin constructionin June 'l996. The new structure was buili within the confinesof the existingstone walls and accommodates the lrish Distillers Whiskey Museum at Basement,ground and firstfloors and 36 apartmentsabove. Extensivereuse has been made of walls and features remaining from the Distillery. The existingstonewallsaverage approximately650mm in width and have been retainedalong Bow Street and New Church Street. Floor levels have been arranged to suit previous window opes which where necessary have been slightly modified using brick and / or stone salvaged from earlier demolition elsewhereon site. Alterationsinvolved the use of lime based moftars sympatheticto the earlier construction. The new building and existingwall are treated as independentstructures but for lateral restraint offered to the retained BlockEF ApartmentBuildinqStructure lsolated and combined pad foundations rest on dense gravels with a design allowablebearingpressureof 250 kN/mr. Typically 400 square RC columns support 660 x 465 O/A deep beams at groundand first floors and 665 O/A deep transfer beams at second. 200 deeo precast hollow core units with 65mm structuralscreedare usedthroughout. l aq au aa A u c^ . I Underpinning was carriedout in standard fashion to the level of the new foundations. From the onset of the kN/nf lmpossd Load kN/df project the view was taken, considering '1.5 200 H.C. Unit 256 95mm Screed 2.24 the good ground conditions, that 30 Asphalt 0.70 differentialsettlementwould be minor 80 lnsulation 010 50 Pea Gravel 0.90 the majority of which would be 200 Soil 3.60 50 M!lching 0.20 experienced before construction 10.3 1 5 At second floor level a loadbearing finalised. masonry structure carries on from transfer.215 wide walls are typically20N Walls were restrainedat each floor level Designloadingsare set out in Table2. at second and third reducingto 10N at by tying back to the underside of new fourth and fifth to roof garden at sixth precast concrete floors. Threaded bars Table 2. DesignLoadings floor level. Vertical ties are provided were chemicallyanchored into stonework throughout at appropriatecentres from and connected to mild steel angles. TRADITIONALTECHNIQUES transfer level and anchored into the sixth Further to tests by suppliers M12 floor roof structure. Columns and threaded bars where selected and As with most old buildingsmany of these transfer beams are designed as key embedded 200mm into stone at 1.2m stone buildingswere builtand maintained elements withstand accidental centres around the perimeter. These to with lime throughoutand materialssuch oamage. gave a SWL in direct tension of c.15kN as limewash work well and which is well in excessof 2.5oloof the sympatheticallywith them. A basic jFFi i I : . - 1 , I**., --. : -. limewash was used for many of the old ,-. stone walls which were left exposed as in the Museum building. The use of modernconsolidants was testedon many of the old brick lining structuresto the copper stills. However it was found that the old lime mortartechniqueswere more appropriate to the restoration of these locally. ROOFS Root Garden Dead Loed r r ' i , : l ' . ' - - : r : t i ; ; The reuse of old cast iron columns for structural purposes was an aspiration at the outset of scheme development. However, given the scale of the developmentsoverheadand the extent of dilapidationof the existing structure it became impossibleto extensively reuse these exceptin some nominalcapacityin the Museumspace. The steel trusses in the Museum roof are termed "blacksmiths trusses" and are copied in their detail from those which had existed in the old Smithfield shed locatedalongthe Smithfieldelevation, 5 - -rT; ' lt, 1-. J li#i rJ ti,= ,& J:J CONSTRUCTION :t The various blocks are outlined here in the order in which they were constructed on site. +'fe Figure8 Block EF plan nfr e. i i .'o , . "r...i;li I ' 't::.1-:. j I connections are made. These beams, orientatedat 45", extend out over the line of fifth floor apartments and increase to 800 deep as they pass over 215 x 1000 RC piers and cantileveron to meet and form the final corneroi the pyramidbase. Figure9. Steel Towers The L shaped portal base plates to steelwork and have plates arranged to allow bolts act in shear rather than direct tensionalone when resistingwind uplift. Towersare protectedagainstlightningby earthing back to foundationsvia the RC structure. Museum ReceotionArea Adjacent to the new apartment building the original copper still and vat house is now refurbished as the Museum receptionarea. ReceptionFloor verticaf load {2.5o/ox 300 = 4.5kN). Boltedconnectionswere madeonly after the buildinghad reachedsixth floor level and most of the expected differential settlementexperienced. Nonetheless,elongated holes on the verticalleg of all restraintangleswere provided to accommodateany further seftlement,Repalrwork has beencanied out to capingstonesand a fungicidial treatmentappliedto arrestthe growthof vegetation.The existingwall finishesto iorm a parapetto the fourthfloor terrace level. New floor screedswere pouredright up to the intemal wall face. Sound insulation, preventing the travel of airbome sound through micro cracks longthe wall face was incorporated into -<he perimeter drylining using fibrous insulating material. lnsulating. apartments from air borne sound emanatingfrom the WhiskeyMuseum, ThemeBars and FunctionRoomsis by meansof proprietary acousticceiling. Figure9. SteelTowers DiamondCantilever Features A strikingfeatureon bothBowStreetand New Church Street elevationsare the cantileverorielwindows. Projecting2m fromthe newstructure. Thetriangular RC slabs,265 deepandtaperingto 125,are verticallyalignedand cantileveroverthe pavement below from second floor upwards. Stone walls have been curtailed andtrimmedwitheitherstoneor brick to allow these features protrude. The exteriorsare clad with a glassand aluminiumcladdingsystemwhich is in contrastto the olderstonework. Old brick "mash tun" foundations consisting of concentric circular walls have been maintainedand lie below the new reception floor. The floor consists of steel beams supported off short stub columnson 450 square pad foundations. Crane access was restricted within this area due to the elements of older structure being retained overhead. "Tee" beam and block flooring were chosen for its handleability.Sections of floor were omitted to allow visitors view the features below. Vats These"diamondcantilevers" are topped off with pyramidtowersat sixthfloor roof levelwhlchserveas a secondlevelto the fifth floor duplex units. The unusually shapedpyramidtowersare influenced by the earliermentionedkilnswhichexisted on site. Essentially thesetowersconsist of 127x 76UBportalframesarrangedin pairsin each direction.Considering the difficult location the frames were designedfor ease of erection. Eachof the eight legs are connectedto a rigid boxat higherlevelproviding compression and tensionrings which allow the full momentcapacityof rafiermembersto be realised. Secondary rafters are positionedat cornerscarryingtrimmed cleader rails and define the pyramids shape. Overheadthe 60 x 60 RSA box frame lorms the turrets which house water supplytanks for the apartments withinthe pyramid. At the foot of the pyramids215x300high upstandbeamsare caston the roofslab. Reinforcement is lappedwith the mesh screedto resistwind uplifi forces and in additionthreadedbarsare droppeddown through joints between precast units where mild steel plate and bolt and 6m in diameterhavebeencarefully restored. These vats were previously linedwith copperand exposedto intense heatfor manyyears. Where necessary, stainlesssteel rods have been used in conjunctionwith repointing wofk to stabiliseloosesectionsof brick. At approximately mid heightin the most Westernvat a new floorwas requiredto allowtour circulation.A 200 deep RC sfab is supportedby 12 no. 450 x 200 keyswhichwere brokeninto the wall at 30" intervalsaroundthe perimeter.The secondvat which was in considerably better repair now houses a lift from groundto firstfloorlevel. Thesupportto thisfeaturelift consistsof an openframe comprisingof 100 SHS bracedwith a series of lighter CHS members.The frameis furtherstabilisedand horizontal minimisedby surrounding the deflections shaftwith an RC spiralstairswhichties togetherthe whole assemblyincluding thevatwalls. ExistingTimberTruss Two large timber lattice truss are composed of two separate trusses arrangedside by side comprisedof 300 squaretop and bottombooms. Broken into two spans,the trusstravelsthe full lengthof the reception area. Vandalismand variousfires had caused extensivedamage.Originallythis truss carried grain storage over the "mash thanits tuns"below,far moredemanding presentday requirement to supportself weight and a relatively light new mezzaninestructure. No strengthening workwas required. Thetrusswas heldin placeby temporary works during demolitionas previously discussed and builtintothe newstructure as workprogressed. -- wroughtand cast iron A-frametrusses. The new roof over the receptionwas modelledon this and consistsmainlyof mild steelanglesections,flat platesand solidrodsas ties. In total3 baysof truss were used and supportedoff various elementsincludingthe vat house wall, existing steel plate girder, new steel beamand the perimeterwall of the new apartment building. AudioVisualRoom room is a The audiovisualpresentation starting point to tours around the Whiskey Museum and accommodates 200peopleseatedin a crescentfashion. The stepped seating platformswere designedto act as plenumfor the supply of freshair. Forthisreasonhoneycomb wall constructionsupports 240 x 44 The irregularshape in plan and the timbers at 400 centres and 12mm number of objects which were to be plywooddeckingbetween.Holes have avoidedbelowincludingbrick vats and beencut undereach seat to providean air supply. large museumpieces,(such as copper evenlydistributed stills which were installedprior to the Canopv CourtEntrance roof), complicated the structural Jameson NewMuseum, Roof arrangement. Coveringthe mainMuseumentrancein Where Block GH is now locatedthere Internally the roof is finishedwith timber Jameson Court this external canopy originallyexisted a large warehouse whichis coatedwith intumescent varnish consistsof galvanisedsteel plate rolled buildingcoveredwithveryattractive andslatedexternally. to presenta curve which supportsthe ('l gentlyinclinedglazing. This steel plate is in turn supported at each end off vertical RSC's which travel from concrete footing up to the roof parapet. Mid span, the curved plate is supported by 12mm diameter tie rods inclined at 45" and again connectedto the verticalchannels. The RSC's are restrainedat parapet level by connectingback throughthe Museum wall to the new steel trusses behind. Stone Buildinq Considered as part of Block EF, the stone building is shared between the Whiskey Museum, Music Centre, Smithfield Hotel and a separate office suite. Originallythe building served as storagespace for granularmaterialsand final products destined for duty free markets. The buildingis roofed by a cast iron tank which held close to 4 ft. of water, which served not only as a water supply to the productionfacilities around the Distillerybut also as a means of maintaininga cool temperature in the e+oresbelow. The cast iron roof remainsnot only as a roof and feature but as plant storage space for the many new facilities - when full this tank supportedapproximately12 kNim'?SWL. The tank was constructed with individual 4 foot square cast iron panels bolted together and sits on a grid of primary and secondary girders. Occasional panels have now been removed to provide access to plant space from a new stairs below. and wall. Structural topping was delivered via concrete pump Throughoutconstructionthe tank served as a lateral restraintat eaves level. A new structurewas installedat ground, first, and second floor levels and opportunity was taken to reuse existing 650 deep steel beams at third floor level. New opes were broken and lintels provided,typicallylight UC sectionshave been arrangedparalleland gap between infilledusing brickand / or stonematerial. All steelwork is protected for t hour fire rating either by encasing or, where intendedto remain exposed, by coating with intumescentpaint. Curved beams have been detailedwith a straightinside face with varying links to take up the curve. This alloweddetailing the beam as straight thereby avoiding torsionalcomplications. LoadbearinqMasonry Again 20N blocks support the precast floor units at each level which reduce to 10N from fourth floor. Vertical ties have been providedas per Block EF details. Curved ExternalLeaf Blockwork Builtwith a radiusof 12m along Jameson Court, the perimeter edge beams were cast within shuttering faceted in 1.2m lengths. Continuous stainless steel BLOCK D relievinganglesare providedat thirdfloor level and supplied in 1.2m lengthsand Block D Accommodates43 apartments mechanically fixed to the edge of the and provides 500m2 retail space at perimeter beams allowing the external ground floor level. Located on the leaf of block work to be constructed to Eastern side of the site, apartments are b e a r o n t h e a n g l e ,e n s u r i n ga m i n i m u m accessed from Bow Street. One side of supportof 80mm at all times. the retail units opens out onto Duck Lane, a reconstruction of a laneway Balconies which previously ran through the Distillery. The other side which is curved Balconieswhich overlookJamesonCourt in plan forms the boundaryto Jameson are platforms essentially timber Court, the newly formed courtyard area supported off 4 storey vertical towers serving the Museum reception. A made up of SHS and angle members. noticeablefeature in this block is the Verticallyindependentof Block D main retainedchimney,the second largeston structure, the towers are tied back for site, 18'13 AD. lateral restraint. lated A common problem encountered elsewhereon the site was also present at the foot of the stone building. The many brick service trenches, drainage and smoke ducts which ran throughoutthe distillerylay close to foundations. In this particularinstancethey were found to be F i g u r e1 0 . B l o c kD P l a n very low. ; first stage in restoring this building Wdsto underpinthe stone foundationsto a level so as not to be affected by voids or proposed foundations and where necessary infill ducts with lean mix concrete. ExpansionJoints Along the southernline of Duck Lane and for the full extentof the site an expansion joint separatesthe North and South end of the site from foundation level and above. Precastslabs on Duck Lane bear at one end on neoprene strips which accommodate small horizontal movement and reduce any induced stresses. Roof Tower & DiamondCantilever BlockD is the most irregularly shaped structurewithinthe development.Fix x-x Roof tower and diamond cantilever shows the more regular rectangular follows the same principles as those portionwhich is presentfrom basement used in Block EF. levelto sixthfloorroofgardenbehindthe retained facade on Bow Street. ExternalTerrace Walkwavs Sweepingtowardsthe centreof the site Maintainingthe roof tank restrictedcrane the Westernleg of BlockD is curvedon Access to apartments on the curved access and hindered installationof the all sides. commencing at groundlevel portion of Block D is offered via external structure below. For this reason a rather than basement,the structurefor walkwayswhich overlookDuck Lane. RC system of 203 UC beams supporting this portionstepsin progressively at each slabs are supported of galvanised steel block and plank flooring was chosen. floorlevelup to fifth. circular hollow sections. Services Block and plankfloors,250 O/A deep are supported off the bottom flange of UC sectionsand this minimisesthe structural depth. Although consideredan internal environment,any steelwork which enters into or bears onto the existingstone walls is coated with 2 layers of bitumen paint in addition to standard specification End planks are supported by angles with vertical leg orientated upwards and mechanically fixed with anchors at 400 centres. Reinforcement is welded to provide a positive tie between the slab Structure RC isolatedpadfoundations support400 diametercircularcolumnswhichin turn supportthe transferstructureat firstfloor. The irregularcompartment layoutabove did not lend itself very well to a typical transfer beam system, an alternative solutionconsisting of a 300deepRCslab actingas a "transferplate"waschosen. feeding to these same apartments are hung from the underside of terraces. Terraces lead to the alternative fire escaperoute by the existingchimney. C h i m n e v( 1 8 1 3 ) The second largestchimney on site and dated 1813was, despitesome superficial defects found to be in good condition. Signs of previous repair work were evident including repointing and circumferentialsteel straps. Towering at I 33m the chimney projects 10m above Block D roof level. Excavations for Block D foundations revealedthe brick chimneywas built off a mass stone / rubble plinth extending below the level of the new foundations. The undergroundcarpark below Block ABC which extendsas far as Duck Lane meant much excavationin the immediate vicinityof the chimneyfoundations. The condition of the stone / rubble caused concern and it was encased in concrete on a piecemealbasis to allow work to proceed. The chimneywhen considered as free standing from foundation level had a factor of safety against overturning of 10 and mobiliseda bearingpressureof 700kN/m'?. Earlier proposalsto provide an escape route from the external terraces mentioned above included steel stairs around the outer oerimeter of the chimney spirallingdown to Duck Lane. Consideringthe irregularwall surfaceand potential fabrication difficulties resulting, but more importantly realising the possible benefit of providing an effective "wrap"aroundthe chimney,an RC spiral stairs was chosen. The stairs, 175mm waist and 200 deep landings,is tied back to the buildingat eachfloor level. the steel portalsrise 6m and are capped with glazed turret pieces. PerimeterWalls / Claddinq The existingred brick wall further down Smithfieldin front of Block GH has been recreated in front of Block C for the The rectangularcourt area bounded by Smithfield elevation and around the blocks A & B was designedto provide Friary Avenue corner. Towards the accessfor emergencyservices,including eastern end of Friary Avenue the fire tenders, through the Bow Street Malthousewalls have all been retained pedestrianentrance. 400 deep precast except for the gable ends. Walls have units span 10m and were designedfor been extendedby up to two storeys using parameters as specified in BS 5400 traditionaltechnioues. Bridge Design - HA Loading. A 5m diameteropeningis coveredwith a metal Fronting onto Smithfield Plaza, the grille and contributes to the carpark sculpturecourt forms the main entrance ventilationbelow. to the development. Standing at five storeys tall this curved elevation is clad predominately with glass. GardenArea ? e : s 6 € l -- ;g-:i-- i ;;5f- .:: i--!;-' F' il--.: i.=-! -f i!--rl +._ BLOCK ABC Block ABC comprises 139 apartments and 2,000m' retailspace at ground floor level. Towards the front a sculpture gallery occupies a double floor height exhibition space opening up onto sculpture court, the semi circular courtyard onto Smithfield plaza which forms the main village entrance. At seventh floor level the double storey tower features overlooking Bow Street and Friary Avenue are the highest residential units on the develooment. The basement provides for liZ car parking spaces and is accessed by a separate entrance and exit ramp from Bow Street. Structure Structural scheme is similar to other blocks with RC frame at lower levels supportingthe transfersystem at 1st floor from where loadbearing masonry continues. Again, throughouteach level, steps in plan and externalterraces called for numeroustransfers Towers At higher levels transferstructuresupport the legs of the large tower structures8m square in plan. Slightly different to those discussedin Block EF these consistof 4 no. 400 diameterRC circularcolumnsuo to 7th floor level which are framed with RC beams. Anchoredto the RC beam F i g u r e1 1 . A B C P l a n Car Park Ramp Car park exit and entry ramps both have doublecurvaturein plan to sweeparound the structure. 200 deep in-situ slabs are supportedoff 300 wide x 1000 high side wallswhich act as beams. The exit ramp w a s l a i da t 1 : 1 0a n d e n t r a n c ea t 1: 9 . Raised Courtvard A central courtyard in Block C is formed at second floor level over the sculpture gallery exhibition space. 200 deep precastunits span 7m and in additionto garden finishes,support steel SHS legs of the veranda which provides access to apartmentsat 3rd and 4th floor levels. BLOCK GH Block GH was the last block to begin construction.Accommodatinga 79 suite hotel, theme bar and restaurant,music centre with exhibition space and auditorium. This block lies at the south eastern corner of the site behind an existing red brick wall leading ont. Smithfield Plaza. Block GH can b. separatedinto several distinct areas: Hotel - which occupies the full front elevation from sculpture court to boundary. Music Centre - circular drum structure with conical roof between the hotel and JamesonCourt. Pfatforms consist of 125 x 64 RSC spanning between SHS uprights and support125 deep RC slab spanningonto 215 walls. Additionalrestraintis provided by casting in M16 galvanisedthreaded bars passed through the vertical web of channellat 600 centres. ConservatoryArea - glazed infill linking the stone building, music centre and hotel. A sacraficalcolumn approachwas used in the terrace slab design. Any one column could be removed without affecting the slab structure, thereby reducing the need for expensive fire protectionon externalcolumns. For the more regular rectangulararea, isolated pad foundations carry 400 diametercircularcolumnssupporting600 overall deep transfer beams at first floor level. Stone Building- as previouslydiscussed. Hotel Structure A full heightatriumis featuredin the hotel entrance lobby where voids in the flat slab above align to a glass octagon roof lighi at sixth floor roof level. Half BarrelRoof Above the 5th floor penthouse the loadbearingblock work and vertical ties from below finish off in a 215 wide band beam above which additional blockwork iorms the curved roof contours. Stepped blockwork supports galvanised steel purlins and curved insulated sandwich panels. The purlins are strapped down via galvanised steel straps anchored to RC band beams to resist possible uplift forces due to positive pressure acting throughthe large patio doors which lead onto terracebalconies. + ExistinqBrick Walls -he existing wall has delermined .-domewhat the new floor levels, and in order to maximisefloor to ceiling heights '100 a thin floor plate was required. deep 'l 00 structural super wide slabs with toppingspanning7.5m have been used. Slab changesto 250 deep in-situflat slab construction over by the irregular and curved sections by the main entrance and sculpture court where head room was not such an issue. Above the first floor transfer level the struciure changes to 215 wide load bearing block work. At each level the floor plates described at first have been repeated. 3rd floor level aligns closely with the top of the existing brick wall, a terrace is iniroduced here as the structure steps back approximately2m continuingup to 5th floor level oenthousesuites. ]F ll t{ ll ir ilr iil: --Er,i 1'tr1 The existing red brick wall facing onto Smithfield plaza dates back to 1895. Once the perimeter wall of a newer section of the distillery it has been maintained but altered by cutting full height vertical slots to allow general This access and light penetrate. modified wall forms the basis for that recreated on the Block "C" Smithfield elevation. Boundingthe Eastern side, a second wall with impressivearches and circularopeningshas been retained. The curved wall onto sculpture court is clad with glazing to mirror that on the Block "C" side. At basement levels the theme bar and restauranthave been steppedto form an intermediate"lower ground" level running parallel to the brick wall. This negates the need to underpin allowing a load spreadof 1:2" The 275 deep RC slab at basementlevel has been designedto BS 8102 as Grade2 BasementusingType B (structural Construction integral protection). At higher levels restrainingangles are used to tie walls back to the new structure in a manner similar to that describedin Block E/F. Music CentreStructure The Music Centre drum is approximately 26m in diameter and offers music performance, recording facilities and exhibition space at basement, ground and 1stfloor. infilled with 200 deep concrete slabs horizontal service runs which vvas reinforcedts form a tie beamaroundthe importantparticularlywithin the area roofandfurtherstabilisethe structure. occupiedby hotel suites where floor to ceiling heights were critical and the Audio visual equipment,camgrasand undersideof supenrideprecast slabs lightinggear are all hung from rafters wereto formthefinalfinish. inside. CHIMNEY The MusicCentreconnectsdirectlywith the groundand secondfloorof the stone Builtin 1895,the largestchimneyon site building. Existingwindowshave been standsat 42m abovegroundlevel has a openedoutandwhererequirednewopes constant internal shaft diameter of 9ft created. Connectionsto higher levels {2.74m)and externaldiameterot '14ft are madevia stairswhichcurvearound (4.27m). the perimeterof the MusicCentredrum. Onceagainpadfoundations support400 The RC stairswith 200 deep waist have Constructedwith red brick,cut graniteis diameterRC columnscarrying600 deep beendesignedfor long spanscombined used at intermediatelevel and in conjunctionwith cast iron plateat the top RC beamsat groundand 1st floor. 300 withtorsionaleffects. rim. deep superwideslab floorsspanningup Area- Structure to 10m are usedthroughout.Slabsare Conservatory Proposal essentially100 thick precastwith 100 void formersand 100 structuraltopping. The basementlevel courgard formed On the periphery 215 blockwalls,curved betweenthe site boundary,Hotel,Music The proposalhas beento providea glass in plan supportslabs cut at a suitable Centreand the stone buildingremains panoramiclift servinga two storeyglass viewingplatformlocatedon top of the skew,in-situtoppingor smallinfillin-situ clearfor fullheight. chimney. The platformis accessedat slabsdefinethefinalshape. This area has been covered with a the lower viewinglevel and visitorsca,. Thesolidperipheral wallsare considered sloping glass roof 15m above the take a spiral stairs up a furtherflight.* to be inherently stiff and brace the basementlevel at the stone building Spiral stairs returnsdown throughthe reducingto 5m at the hotelend. 3 No. shaft to provide an emergencyescape structure. 800 deep steel latticetrussescomprised route, ol 120x 80 and 60 x 40 RHS'sspanthe ConicalRoof 12m length. Trussesare bracedusing At 1st floor level the RC structure stainlesssteel cables and turn buckle terminates and a steel portal frame components.Above this 80 x 40RHS continues. The conical portal frame purlinsspan from truss to truss and in consists of 406 x 140 UB rafters ontothe MusicCentrewall. The stepped ananged radially at 45' and sloping flashingdetail along this curved wall approximately 17", intermediate providesa dry cavitybelowthe roof level secondary rafters break ihe span of within the conservatory.Any steelwork walls are roofingdeck at lower levels. 406 x 178 which bears on neighbouring withinthisdryenvironment. UB stanchions(8 no.) are fixed to the contained slabdirectlyoverRC columnheads. Finallytheglazingmullionsystemis fixed and a walk-ingutterat the lowervalley - Figure13. SectionThroughGH The future use of the auditoriumcalled for the use of an acousticallyinsulated roof. Many options were considered including an RC shell, The final constructionconsistedof a metal deck. 12mm ply, 25 pyrock sound insulating board,50mm polystyrene, 30 pyrockand roofingmembrane. ServiceInteraction Muchof the plantspacerequiredfor the hotel was locatedremotely- within the old cast iron tank above the stone building,this reducedthe number of structuralimplicationsassociatedwith providing largeitemsof plantat rooflevel includingconcernsregards noise and Eight rafters are connected to a vibration control. and increased the compressionblock at apex consistingof numberof penthousesuites. To the a CHS containingcircularplateswelded exterior of the stone building 900 in place. For purposesof design the diameterstainlesssteel ducts grouped connectionis consideredto act as a pin. togetherform a route for servicesfrom roofleveldown. At eaves level 203 UC's trim the metal deck formingan octagonin plan - the Withinthe Hotel vefticalserviceshafts outstanding curved areas were then have been arrangedso as to minimise lnspection A visualinspectionof the chimneywas carriedout by examining the internaland external brick faces from a cage suspendedoff one of 3 sitetowercranes. Brick and mortarwere found to be in goodconditionfor a structureexposedto elementsfor over a century. Cast iron cappingpiecesat the rim had conoded and signsof damageby vegetation were evident. l0 Structure directions,frames are connectedto TemporaryWorks - The Design of the chimney wall with M25 dividag Fagade RetentionSystems by Brian '1996. threaded bars passed through the Mahony full wall thicknessto a MS plate and bolt connection on the internal surface, To enhance the chimneys strength and provide additional resistance against wind moment, axial load and torsional effects generated by the new structure a 125mm thick sprayed reinforcedconcrete lining has been proposed. This lining shall effectively form a stiff 2.74m diameterpipe with a 125 wall thickness, suitably reinforced the lining shall transmit the torsional and bending stresses induced by wind on the asymmetric structure down through the chimneys to a level where vertical precompressionincreasescapacity. placedon the internal Reinforcement vertical surface and steel threads covered with protective membrane. Sprayed concrete lining is applied working upwards and finished with timber float to provide a smoother surface. At the top rim the cast iron capping pieces and damaged masonry are removed, a new reinforcedconcrete capping piece is then formed using the refurbished cast iron plates as permanentformwork. 4. The two storey viewing platform is erected at ground level, lifted into place, and connected to the RC liningand the externalsteelframe. Finally lift installationand finishes are fitted. This remains the last element of structural work to be completed. The internalstairs is at this stage in place. The walls will hopefully be concerted withinthe comingweeks with completion expectedwithin 2-3 months. 1i; ..-7 .::il. .:ft. i::;k:. '1,ii' r' .ir. -;a:a----t.'- J:' a l.r' ..::T,"., TIT .'.1;lr: "'l; ,-a.i-i., >_Y.+ 1___i'i_ The project has been an adventure. lt has liftedthe area in generaland works planned for ihe near future by various bodies in the Smithfieldarea are now very numerous. When this project started it was the vision, determination. and ambition of the developer which enthusedthe whole team. We thank all those involvedwith what was an excitino and rewardingproject. DESIGNTEAM '-'-,:5--*- Developer: HeritageProperties Architect: A & D Wejchert Figure14. ChimneySchematic The plannedsequenceof constructionis as follows: 1. 2. Centralspine ('193CHS) is inserted throughcentralshaft,and 3mm steel durbar plate spiral stair treads attached and anchored into brick wall. Horizontalgoing of treadsstop short of wall to allow sprayed concreteliningpass later. At the Southernside, 533 x 19'1UB's and 203 UC's are erected vertically and carry the lift support and rail assemblies. lntermediatehorizontal frames providelateralrestraintin two M&E: Delap& Waller F i r eC o n s u l t a n t : Michael SlatteryAssociates Archaeologist: JudithCarroll H o t e lF i t O u t : Event References PublicRecordsLibrary lrish Whiskey - A 1000 Year TraditionO' Brien Press by M Magee 1998 l 1