sc architects pack

Technical Specification

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Spiral Cellars Ltd is a company dedicated to the supply,delivery and installation of prefabricated modular concretewine cellars. We have been established for over 25 yearsand are the sole suppliers of concrete spiral wine cellars inthe UK. Our head office is based in Pulborough, WestSussex and our installation teams are fullyemployed by the company, installing three tofour cellars a week every week!

A Spiral Cellar can keep up to 1,900 bottles in ideal storage conditionsand like a traditional cellar, it relies on the surrounding earth for its insulationand stability, plus an ingenious air-flow system. It requires no power to maintain its constanttemperature and therefore it has zero running costs, no maintenance and no servicing.

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When to install a Spiral CellarOption 1: New build, extension, refurb scenario = Fit Only Installation

The most time and cost efficient opportunity toinstall a Spiral Cellar is during the constructionof a new build project, or even where theflooring in a room is being replaced.

The excavation for the Spiral Cellar can be dug at the early stages ofthe build programme, whilst a mechanical digger is on site and siteaccess is easiest. We recommend that any demolition work isundertaken, and once new foundations have been set, the circularhole for the cellar be excavated. The hole should be shuttered suchthat the hole is safe, with our hole protection rings and the rest of thebuild programme can continue. The slab should be poured to theoutside of the shuttering and the contractor will be required toprovide an electric supply to the cellar and to fit two ventilation pipes(50mm UPVC pipes) within the floor construction to the nearestexternal wall. This will be agreed in advance by Spiral Cellars andguidance notes will be provided.

We should be booked to install the cellar between first and secondfix stage of the build. Our schedule is normally booked 12 weeksahead. To re-schedule the installation date we require 28 daysnotice as per our Terms and Conditions.

The construction method for the cellar involves: installing the butylliner and fleeces, casting the base, constructing the cellar modules,casting a reinforced concrete ring in-situ, if required.

The trap door and ventilation pipes are connected and theinstallation is complete. On a well prepared site, this process willtake 3-5 days. The final electrical connection should be completedby the contractors certified electrician.

An alternative to the steel shuttering panel earth support systemsupplied by Spiral Cellars is to install precast concrete MiltonRings (or similar supplier). The Milton Rings are not supplied orinstalled by Spiral Cellars. The rings usually sit on a concrete slab.

Note that a 2.4m diameter ring x 500mm deep weighs approx 1.05tonne. The step irons need to be cut off. If this method is selectedplease confirm for advice on the minimum internal diameter of therings - generally a 2.4m internal diameter ring is required forOriginal Spiral Cellars and 2.6m internal diameter for White SpiralCellars, but we need to confirm the details for each particular job.Please consider cost, delivery and plant required for Milton rings, in addition to access issues on your site.

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Option 2: Retro fit scenario = Full Installation

We are able to undertake the full installation into existing buildings, even when the property is fully occupied where we dig the hole and fitthe cellar.

We can also carry out a full installation on refurbishment and newbuild projects if the contractor prefers not to excavate.

We dig and remove the spoils by hand, and as such we are able toinstall in most ground floor rooms or basements regardless ofconstruction build up. For the Original Spiral Cellar, this can take 5-6 working days. For the White Spiral Cellar, this is more likely to be 8-9 working days. Access for materials and skip positions need to be considered carefully at site survey stage.

When to insta

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A Spiral Cellar can be installed in any ground floor room:kitchen, living room, garage, conservatory*, dining room,garden room, outbuilding or study. (*not south facing)

Advice on positioning the cellar within a design: It should not be fitted into a south facing conservatory due tooverheating (other orientations are acceptable).

Optimum performance of the cellar can be achieved where theventilation pipes are on the North or North Eastern aspect with nomore than 5m in plan to a perimeter wall. Other aspects can beconsidered, it usually depends how well shaded or protected thepipes would be.

The external edge of the excavation can be within 600mm of load bearing walls

Under floor heating should not be laid within the circular area ofthe cellar PLUS 300mm all round. The vent pipesshould be fully wrapped and insulated ifshallow, or they may have to run underthe slab. NO OTHER SERVICESSUCH AS HOT WATER PIPES TORUN ACROSS CELLAR AREA ORVENT PIPE RUN AS IT WILLHAVE A DIRECT IMPACT UPONTHE PERFORMANCE OF THECELLAR.

Care must be taken with following trades.

Spiral Cellars use an independentconsultant engineer. He will prepare projectspecific calculations. If the propertyfoundations are compromised or impactedby the spiral cellar there are a number of solutions;

1. The foundations are underpinned. This is extremely expensive and will be labour intensive, adding time and cost to the programme.

2. Provide deeper foundation, in the case of new build orextensions. This is also a very expensive solution.

3. Some project engineers will design a concrete shell or pit forthe spiral cellar to fit inside, with a sump pump. This is very

expensive and will incur a design fee.

Spiral Cellars recommend:4. Shuttering or Milton Rings and a reinforced concrete ringto resist the surcharge load. This is cost effective and saves time.

Where to install a Spiral Cellar

VENT LOCATION - GOOD

FAIR

FAIR

VENT/CELLAR LOCATION POOR

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DimensionsHere are key dimensions for each of the cellars.

*Calculations prepared by our independent structural engineer will confirm the excavation depth.

Building RegulationsBuilding Regulations approval is notrequired if the cellar is to be installed inmost single detached garages* oroutbuildings. Approval is required wheninstalling into a habitable space such asin the home or an attached garage. Ourconsultant engineer will create theproject specific calculations and prepareall information for the BuildingRegulations Approval application. Eitherwe can then submit the application onbehalf of the client, or where the cellar is part of a larger project, thepackage of information can be sent to the Project Team responsiblefor submitting the master application, and will save on LA applicationfees. *Garages over 35m2 or with living accommodation over, dorequire Building Regulations Approval.

The Spiral Cellar is not considered to be a habitable space by BuildingControl officers. Therefore certain elements of the cellar do not needto comply with the regulations such as having a handrail, the goingand rise of the staircase treads. As we have installed over 3000cellars in the UK, most experienced Building Control officers arefamiliar with our product, and therefore these features are notquestioned.

Planning Permission Planning permission is not normally required, but may be requestedby the Local Authority if a property has already undergone extensiveextensions or additions or is a Listed Building. In our experience acellar has not yet been refused planning permission on the occasionsthat it was requested. The Spiral Cellar can be part of an existingapplication or we can manage this process. A structural calculationpackage will be prepared once the order is placed and depositreceived.

Listed BuildingsIf the property is a listed building a listed buildings application willneed to be made to the local authority for approval, it can take up to10 weeks from the application being accepted until approval isreceived. However, we are able to zero rate the VAT for the cellar onceapproval has been awarded. The Spiral Cellar must be mentioned onthe approval to achieve the zero VAT rating.

Party Wall agreementsParty Wall agreements are applicable to a Spiral Cellar installation ifthe excavation is planned to be within 3 metres of a neighbouringowners building or structure, and where that work will go deeperthan the neighbours foundations.

You must inform the Adjoining Owner or owners by serving a notice.The notice must state whether you propose to strengthen orsafeguard the foundations of the building or structure belonging tothe Adjoining Owner. Plans and sections showing the location anddepth of the proposed excavation (our structural calculationspackage) or foundation and the location of any proposed buildingmust also accompany the notice. The Act contains no enforcementprocedures for failure to serve a notice. However, if you start workwithout having first given notice in the proper way, Adjoining Ownersmay seek to stop your work through a court injunction or seek otherlegal redress. The notice must be given 1 month before work starts.The neighbour may insist on a Party Wall Award to be completed by a Party Wall Surveyor. The person carrying out the work is responsiblefor the cost of the award.

Mini Cellar Original Spiral Cellar White Spiral Cellar

Excavation diameter 2300mm 2300mm 2500mm

Cellar diameter 1800mm 2000mm 2100mm

Depth from FFLCellar depth selected + up

to 600mm*Cellar depth selected + up

to 600mm*Cellar depth selected+ up

to 600mm*

Trap Door 1200mm x 1200mm1500mm x 900mm or 1500mm diameter for round glass door

1500mm x 900mm or 1500mm diameter for round glass door

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The cellar itself is a solid concreteconstruction that sits inside a waterprooflining, which means that it is damp-proof,and highly resilient to temperature changesand vibrations.

The wine is stored horizontallyinside separate slightly curvedbins that line the walls of thecellar. Each bin holds up totwo cases of wine.

As well as being set into the earth, whichaids insulation, the cellar maintains aconstant temperature through a passiveventilation system, using two pipes.

Cool air comes into the cellar through a pipe atceiling level, pushing the warm air downwards andout through another pipe situated at the bottom ofthe central spine. This then feeds up through thecentre of the stairs and outside, where the pipe isfed to 1.5m above ground level.

This system helpsprevent the air in thecellar from becomingstale, since it is alwaysat the same level as thenatural groundtemperature and isgenerally at optimumcellar temperature ofbetween 8-15C.

Where they cannot be fed through thecavity, pipes will be directed to the outsidewall, and both feed up outside the wall.

We acknowledge that the hot/cold airflow through the pipesseems to contradict the laws of physics, where warm air rises.

The differential height of the vent pipes causes warm air to besucked out through the top pipe and hence cold air flows inthrough the bottom pipe displacing the warm air.

The positioning of the vent pipes is crucial to ensure anefficient cellar.

How does thecellar work?

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a. Suspended timber floor

Typical suspended timber floor detail

Suspended timber floor off sleeper walls

Floors

Floor Construction details


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b. Block & BeamFor a beam and block floor construction please consult with uson advice for locating the spiral cellar, as each project mayrequire site specific advice.

Typical block and beam detail

c. Ground bearing slab (raft or floating)For a slab floor lay the slab and floor screed around the cellar to the top of thesteel shuttering panel earth support system. Spiral Cellars will set the trap doorwithin the shuttering framework.

Floor Construction details

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Standard Trap door The cellar comes with a standard trap door a four panelwooden door.Five lever mortice lock supplied, BS Rated.

Length: 1500mm Depth: 50mm Width: 900mmLifting mechanism: Gas strut arm, 820N (supplied)

The trap door can be positioned at any point on the centre line of the cellar to suit the room layout or the easiest access point. Wethen locate the first step in line with the trap door. In most occasions the open trap door is on your left as you descend the cellar.

Plan of standard trap door

Section A:A through standard trap door

Axonometric diagramshowing standard trapdoor in the openposition

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Trap door positioning9


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10Guidelines for contractors working with amanual recessed trap door

Recessed Trap doorThe recessed trap door is a four panel wooden door, recessed by 18mm to accommodate timber, engineered wood floorsand laminate. A BS Rated five lever mortice lock is supplied.The door is also fitted with a 1100N Gas strut armto assist opening.

The cellar comes with a standard trap door a four panelwooden door. Five lever mortice lock supplied, BS Rated.

Length: 1500mm Recess for timber flooring: 18mmWidth: 900mm Lifting mechanism: Gas strut arm 1100N

50 x 50 S/S

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Timber door

Trap door finished level

Flooring to be rebated over door frame

Flooringover doorFlooring

FFLCut around hinges


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Depending on the thickness of timber, theflooring should be rebated over the door frameto hide the stainless steel frame.

A cut out should be made for the hinges to suit.

Flooring on the door should be planed such thatwith adhesive, the combined thickness is to achievethe same finished floor level (FFL).

Timber should be adhered to the door using therecommended adhesive/fixings by the flooringsupplier.

Flooring (as recommended by manufacturers)should be unpacked and allowed to fullyacclimatise in the room prior to installation.

Spiral Cellars will set the hinges of the door tothe FFL given during the installation.

The floor layer should rebate the handle into theflooring (Spiral Cellars will not do this).


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Reinforced Trap door The standard trap door a four panel wooden door, butwith reinforcement bars to take the loading of a vehicle. Forinstallations in garages. Five lever morticelock supplied, BS Rated.

Length: 1500mm Depth: 50mmWidth: 900mm Lifting mechanism: Gas strut arm,1100N (supplied)

Section A:A through reinforced trap door


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This door is recessed to accommodate timber, ceramic ornatural stone tiles up to 12mm thick with a motorised dooropening mechanism. The frame is fabricated in stainlesssteel.

Length: 1500mmWidth: 900mmRecess: 20mmDepth: 520mm (to bottom of motorised arm)

Lifting mechanism: Motorised strut arm, 24 volts. A manualGas Strut arm is also fitted in case of motor or power failure.In case of motor or power failure, there are two screws in thetop of the door (ensure to keep these accessible once tileshave been fitted). These should be unscrewed, and themotorised arm is released from the door. The door will openslightly, and can be lifted with the assistance from the gasstrut arm.

Plan of motorised recessed trap door

Motorised Recessed Trap door


6mm x 50mm

6mm x 50mm

1499mm FRAME OPENING

1702mm OVER ALL

899mm FRAME OPENING

1102mm OVER ALL

Plan of Bilco recessed trap door

This door is recessed by 25mm to accommodate ceramic ornatural stone tiles. Frame manufactured from Aluminium.

Length: 1499mm (excluding flange) Width: 899mm

Recess: 25mm

Depth: 300mm (to bottom of springs)The handle supplied is removable and acts as a key.Lifting mechanism: Stainless steel 75mm piano hinge

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Heavy Duty Recessed Trap Door


1702mm OVER ALL

102mm

297 mm

89mm

FRAME OPENING

mm OVER ALL

2mm OVER ALL

25mmMax.Recess

19mm Fill

6mm support

102mm

89mm

25mm

76mm

3mm Diameter neoprenecontinuous bumper all round

297mm

STANDARD SLAM LOCK

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Specification for theContractorThe fit only option for the installation of aSpiral Cellar has a number of criticalelements that must be executed as per ourspecification. These elements will bechecked ahead of our attendance. Anyvariances will become chargeable.

1. The contractor should excavate a hole asper the structural calculations package, onaverage 2300-2500mm diameter and up to3600mm deep (depending upon cellar sizeselected the exact dimensions would beconfirmed by Spiral Cellars once theengineering calculations have been prepared,which are project specific). Any largerexcavation will result in additional backfilland hence incur additional costs to theclient/contractor.

2. The hole should be protected with oursteel shuttering panel earth support system.This will be delivered to site at 1 weeksnotice, prior to the excavation date. All bolts,washers and nuts are supplied. Follow ourGuidelines for Contractors holepreparation spec sheet.

3. VENTILATION PIPES: Once the excavationis complete and made safe, it is critical thatthe preparation for the vent pipes is givenconsideration. 2 x 50mm internal diameterUPVC pipe with solvent welds must beinstalled in line with the Spiral Cellarsdesigns. Where possible 90 degree bendsmust be minimised. At the external end the50mm pipes can be terminated 100mmbeyond the brickwork if they are containedwithin the cavity. If the vents are to be outsidethe external wall, the 2 x 50mm pipes can beterminated side by side and protected. Thelow level cold in pipe will be 300mm abovehard landscape, the high level warm outpipe will be at 2000mm height, unless agreeddifferently at survey stage. All pipe ends to betaped up. Vents to be marked upper &

lower. Follow our General Guidelines forContractors spec sheet. Please note, thevent pipes must not have hot water pipes forradiators or under floor heating set over. Thevent pipe run must be executed as per ourspecification.

4. ELECTRICAL SUPPLY: The cellar requiresa power supply for lighting and for themotorised door (if applicable). An electricalfeed to the cellar will need to be installedwithin the floor construction in conduit withno junctions. Leave approximately 3.5m ofcable within the cellar. Tape ends. Provide a3amp fused spur for cellar supply and tomake final connections outside the cellar.Follow our General Guidelines forContractors spec sheet.

5. FINISHED FLOOR LEVEL DATUM: A datumlevel mark on a wall or similar indicatingFinished Floor Level (FFL) is to be providedwithin 3m of the cellar location on DAY 1 ofour installation. this cannot be changedthereafter.

6. The Project Manager will be in touch in therun up to the installation to agree a suitablestart date for the installation and answer anyqueries that may arise. A pre-installation visitmay be conducted to confirm the site andexcavation are ready for our teams arrival.We will expect to be able to arrive at the siteon the agreed date, remove the protectionand fit the cellar, reinforce concrete ring (ifrequired), make final connections to theventilation pipes and then finally fit the trapdoor. Any delays/incomplete works whichcause the project to run beyond thescheduled programme will be charged inaccordance with our terms and conditions. If there are any doubts concerning theinstallation procedure and requirements thecontractor should contact the main office fordirect referral to our Project Manager fortechnical guidance, or to arrange a sitemeeting.

7. We will expect good, clear, safe site accessand an area for materials in line with thediscussions and agreements at site surveystage. The HSE do not consider other teamsworking overhead or obstructing scaffold tobe a safe working environment.

Site and hole preparation guidelines:

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Stage 1For suspended floors remove the floorboarding that do not require removal ofskirting boards. Skirting boards are notnormally removed so if a planking boardgoes under the skirting board, an area ofapproximately 2.5m2 will be cut with acircular saw. All lifted materials arecarefully set aside for refitting.In the event of a floor covering being aglued vinyl, ceramic tiles or concretescreed then the excavation process beginswith a heavy duty breaker to the markedcircumference of the hole. The use of thebreaker will continue until the sub soil isreached. In the event that the sub floor isa beam/block structure or timber floorjoists, the necessary beams/joists will bedisc cut by using a disc cutter/hand saw.Upon removal of the cut beams/joists, theexisting remains of all sides of thebeams/joists will be supported by aconcrete lintel or timber support on padsof Thermolite blocks and concrete mix.

Stage 2The excavation of the sub soil can begin.The process is hand digging a spit sectionand removal of the spoil to a skip. Thismethod is used down to approximately1 metre without the need for shoringunless the team leader deems it essential.The use of a breaker with apoint/chisel/spade may still be necessaryif the sub soil ground conditions demand.At approximately 1 metre deep a form ofshoring will be constructed. The shoringwill be sectional corrugated steel sheetswith 6 sections forming a ring at 750mmeffective height. The sections are droppeddown into the hole as the excavationprogresses. As the excavation deepens allspoil is removed from the hole by bucketand hoist. The extraction of sub soil willcontinue for approximately 2 to 3 days.There may be a need to pump out waterfrom the hole during the excavation andthis process will continue until completionof the dig if necessary. The team leaderhas the ultimate say as to whether theexcavation target can be reached safelywithout risk to the Health and Safety ofhis team. This may mean that a projecttarget is reduced thus meaning that afinished cellar of a lesser depth may beachieved. The project manager will keepyou informard.

Method StatementFull Installation the excavation

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The fitting of the cellar (Full Installation and FitOnly Installation)

1. The team will check site datum, inparticular the finished floor level and that thehole is at the right depth and shape.

2. Upon completion of the excavation ageotextile base disk will be laid in theground. A 50mm thick sharp sand blindingwill be poured into the geotextile disk. Thiswill prevent any 'sharps' rising in the groundin a high water table environment andcausing damage to the butyl liner. Ageotextile lining sheet will be inserted intothe excavation.

3. A heavy duty Butyl tanking liner will befitted inside the geotextile and both will belamped/supported at the top of the hole usingscaffolding planks as a safe working platform- thus keeping the bag taut.

4. A base slab of concrete, specified by theengineer will be poured into the bag and levelled.

5. The modules are lowered into the bag viasupports and one man will be at the bottomsetting out/fitting the modules and stepmodules in brick bond pattern. The modules are interlocking. As theconstruction rises above waist height aseries of scaffolding boards are used forsupport and standing. The top ring is fittedjust below finished floor level and one half ofthe ring is covered by soffit boards.

6. The ring/void outside the bag is then backfilled with wet concrete and strux fiberreinforcement (refer to Strux engineeringbulletin for Strux technical specification).

7. The plastic ventilation pipes are fitted.One length of pipe is fitted down thecentre column and one pipe is fittedthrough a pre cast hole in the flat soffitboard. Both pipes are then directed to thenominated outside wall (In a fit onlyproject, already channelled beneath floorlevel to this wall by the contractor). Thepipes will rise up either the inside oroutside of the wall with any joints beingsolvent welded. The pipe will exit the wallvia a hole prepared with a 55mm coredrill. This is then sealed and madeweather tight. One pipe will be raised to0.30m height and the other pipe will beraised to a minimum height of 1.5m -2.0m. The pipes will be clipped to the walland the open pipe will have rodent guardcovers fitted.

8. Electric bulk head lights will be fitted tothe top and bottom of the cellar. They willbe linked and a switch fitted at the headof the cellar. A feed for connection to anexisting ring main will be linked from asocket to the cellar light switch and allcabling will be routed in conduitunderground. A fused spur may be fittedwhere applicable. LED lighting is alsoavailable for the White Cellar.

9. The trap door is fitted onto the open halfside of the cellar. It is set on a 25mm bed ofmortar and the finished detail inside ishaunched in to leave a smooth finish.

10. The door is tested for opening andclosure.

11. Thereafter the floor area around thecellar is reconstructed as directed and inaccordance with the order specification.

12. The site is then cleared of waste andcleaned/washed down as required.

13. All protective coverings are removed anddisposed of.

The sequence for point 5, 8, 9 is differentfor a round glass trap door.

The team leader will fill in a job completionform illustrating any differences to the preorder requirements, risk assessmentvariations, incidents/accidents, snagsrequired, difficulties, incomplete items orother. At stages through the constructionprocess the Project Manager will have visitedthe site/had dialogue/clientconsultation.dialogue/client consultation.

Also we will have requested that the localauthority Building Inspector visits the site toensure approval of the construction method.

Following trades.

The trap door must be left open for aminimum of two weeks to allow the cellar todry out.

Do not allow rubbish and site debris to fallinto the cellar this increases the risk of thecellar being damaged.

Under floor heating. If there is under floor heating in the same room, then NO UNDERFLOOR HEATING pipes to be laidwithin the circular area of excavation PLUS300mm all round. Vent pipes are to be fullywrapped and insulated if shallow, or mayhave to run under the slab. NO OTHERSERVICES SUCH AS HOT WATER PIPES TO RUN ACROSS CELLAR AREA OR VENT PIPE RUN.

The trap door should remain protecteduntil the after sales visit is complete.

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The next steps... Please contact as early as possible in the design stage of the project. If you are able to send drawings in pdf format (detailedplans, elevations and site plans) showing a north point and key dimensions to [email protected]. Please also annotate the idealcellar location. We will review these plans and advise if the proposed cellar location is suitable.

Once you have advised us of the cellar type required (Original or White, depth, and trap door) we will prepare a quotation.

To place an order we will require a 10% deposit. If timings have been agreed, we will book the installation into our schedule(please note that we generally work to a 12 week lead time).

We will then prepare the structural calculations package. This determines the excavation depth and contains the informationrequired for the Building Regulations Application. These will either be forwarded onto the person responsible for submitting themaster application or we will handle it on your behalf.

The steel hole protection rings can be shipped to site ready for the hole excavation, along with the structural calculations packagecontaining the excavation dimensions.

Once the hole is dug, our Project Manager will visit site to confirm the site and excavation are ready for our teams arrival.

Our team will arrive at the site on the agreed date, remove the hole cover and fit the cellar.

Please call us on 0845 241 2768 if you have any questions.

After SalesWithin 6-8 weeks of the completion of the cellar or when allbuilding works are complete, we will carry out an after salesvisit. The cellar will be checked in terms of its performance;humidity and temperature levels. Any extras such as stepcoverings or safe will be fitted. Then once signed off, the cellarwill be ready to stock. Final payment is due at this visit or uponsigning of the Completion Report. In the event of the delay of theAfter Sales Visit by the customer of 3 months after Completion,the final payment will be payable within 6 weeks of practicalcompletion, whichever shall occur first. See our Terms andConditions.

GuaranteesAll our fully-installed cellars come with a five year guarantee. Ifduring the first five years a cellar is found to be defective in anyway, under normal use and service, we guarantee to repair orreplace the cellar free of charge. Full information can be foundwithin our Terms and Conditions.

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Telephone: 0845 241 2768Email: [email protected]


sc architects pack

Documents

spiral cellaroption

cellar modules

traditional cellar

fororiginal spiral c

concrete slab

reinforced concrete

internal diameter ring

new build project