Emergency egress Access at heights Building façade maintenance

Aluminum constructions for your sAfEty

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Custom ConstruCtions based on modular solutions

aluminum ConstruCtions for your safety

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Our modular product lines Emergency egress Access at heights Building façade maintenance

Retractable ladders • • •• •

Permanent ladders, with or without cage • • •Mobile access systems • •Accessory safety solutions • • •

Exterior staircases in aluminum

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Exterior staircases are often considered the pre-

ferred solution for collective evacuation or access.

Allourstaircasesareproducedfromanodizedalu-

minumprofiles.

the aluminum advantageThe use of the high-quality material aluminum,

despite its relatively high cost per weight, usually

leads to the lowest cost solution:

• Aluminum constructions are very light (only

about1/3oftheweightofasimilarsteelcon-

struction), which reduces the impact of the ma-

terialcostperweightonoverallcosts;

• Aluminum metalworking and materials han-

dling is very easy when compared to steel, re-

ducingproductioncosts;

• TheJOMYstairswereconceivedwithtransport

and assembly in mind (light, ready-to-assem-

blemeccano),reducinginstallationcosts;

• Finally, aluminum constructions require no

maintenance (e.g. no protective painting) and

haveaverylonglifespan(over30years),fur-

ther reducing the total cost of ownership.

versatilityMoreover, aluminum allows distinctive options

such as:

• Stairswithaself-supportingstructure,butalso

suspendedstairs;

• Burglarproofcounterbalancedlowerstairs;

• Manytypesofpanelingofthestairs(perforated

sheets,verticalorhorizontalprofiles,etc.);

• Painting in any desired RAL color (polyester

powdercoating);

• Manytypesofanti-slipsteps,guardrails,sec-

ond handrail for children, access gate, etc.

• …

> Emergency egress > Access at heights

exterior stairCases in aluminumex

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+ Nomaintenancerequired; + Longlifeconstruction:over30years; + Noharmfuloxidation/anodizingprotectsthematerialevenin

relatively aggressive environments.

+ Approx.3xlowerweightthanasimilarconstructioninsteel; + Modular:assemblesjustlikea“meccano”; + Nowelding.Easymaterialsprocessingonsite,ifnecessary; + Welladaptedfortransport.

+ Materialshandlingeasyduetolowweight; + Easytoolingandmetalworking; + Constructionsbasedonmodularandnormalizedprofiles; + Creativecustomsolutions(counterbalancedstairs,

suspendedstairs,…).

- Per“mechanicalresistance”,aluminumrawmaterialis30%moreexpensivethangalvanizedsteel.

Despite the use of relatively expensive but high quality raw materials, the total cost of ownership of an aluminum stair is often very competitive.

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in aluminum, but at a Competitive total Cost of ownership

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1. generalOur staircases are constructed from stan-dard components, which are adapted to the building in accordance with the safety re-quirements.Thestairsaremodular,boltedtogether just like meccano. They are sup-plied ready-to-assemble and designed for transport.

2. ConfigurationSeveral layout options, depending on yourbuilding: • In-linestairs; • Crossedstairs,paralleltothefaçade; • Crossedstairs,perpendiculartothefa-

çade; • Rectangularstairlayout; • Otherconfigurationsonrequest.Supportstructure: • SELF-SUPPORTING, mounted on col-

umns; • SUSPENDED, mounted on brackets,

which in turn are suspended from the façade.

3. materialsThe stairway is constructed from extruded aluminum profiles (anodized with naturalmatfinishing)andassembledusingstainlesssteel fasteners.

4. dimensionsStandardinclinations:37°and45°;otherin-clinationsavailableonrequest.Usefulwidthofflights:1’11”to3’11”or600to1200mm;Largerwidthsonrequest.

5. mechanical propertiesDesignedtocarryausefulloadof102lb/ft2 or500Kg/m2.Differentmechanicalproper-tiesareavailableonrequest.

> Several other options available.Pleasecontactuswithyourspecificquestions.

6. options • Severalguardrailmodels,anti-slipsteps,

risers,…; • “Escadesign”model,withpolygonalbal-

conies; • Burglar proof: access by unauthorized

persons is prevented through a counter balancedlowerflightorenclosureofthelowerflight,withaccessdoorwithcrashbar;

• Several gates and chains to secure theaccesstothestairsandbalconies;

• Many types of paneling to enclose thestairs, for esthetic purposes or to prevent unauthorizedaccess;

• Custom balconies and passageways toconnecttothestairs;

• FactorypaintinginanyRALcolorbeforedelivery(polyesterpowdercoating);

• Lowersecondhandrailforchildren; • Additional guardrails on concrete or

handrails against the wall for overall se-curity;

• Etc..

main CharaCteristiCs of our exterior stairCases

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Dependingonthebuildingathand,weproposeseveral stair configurations, which are deter-mined by the stair layout and its support struc-ture.

Layout:Weoffer fourstandard layouts: in-linestairs, crossed stairs parallel to the façade, crossed stairs perpendicular to the façade and rectangular layout stairs. On demand, we also regularly develop other layouts based on straightflights.

Supportstructure: The stair can be classic self-supporting.However,theuseofaluminumalsooffers the possibility to suspend the stair from the façade, if all stair elements remain relative-ly close to the façade.

In-line stairs Crossedstairs,parallelto the façade

Crossedstairs,perpen-dicular to the façade

Rectangular stair layout

Others

SELF-SUPPORTING, mounted on columns

SUSPENDED from the façade

Layout

Support structure

Configurations for Jomy stairs

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The stairs are designed according to local regulations (e.g. the need for intermediate landings every ... steps).in-line stairs

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Crossed stairs, parallel to the façade

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Crossed stairs, perpendiCular to the façade

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reCtangular stair layout

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other stair layout examples

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Wedimensionourstairsstandardforausefulloadof102lb/ft2or500Kg/m2. If yourspecificsituationrequiresso(industrialapplications,differentlegislationor standards, ...) we also provide stairs with a higher or lower maximum useful load. The mechanical properties of our stairs have been tested many times.meChaniCal properties

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bp guardrailComposedofthreeroundpro-files,setparallel to thehand-rail and running through the pickets. The vertical picketsarepositionedevery2’5”or74cm maximum*.

fu guardrail(Shownherewithsecondlowerhandrail for children).

Composed of vertical squareprofiles with rounded edges,placedatadistanceof3’7”or110mmandfixedinthehand-rail and in a lower tube. The whole structure is carried by mainverticalpicketswhicharepositionedevery2’5”or74cmmaximum*.

Weoffertwostandardtypesofguardrails:“BP”and“FU”.Theguardrailshaveaheightofatleast3’3”or1monthelandingsand2’11”or90cmontheflights,measuredatthestepnose.

*Furtherdetails:seetechnicalspecifications,page2.30andnext.

standard guardrails

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Guardrailwithrectangularprofiles

Guardrailaccordingtospecificstandards

Custom guardrails

Guardrail with plexiglass Guardrail with full aluminum plate

Guardrail using stainless steel cables Guardrail with custom design

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Weproposethreestandardtypesofanti-slipsteps: 1.Stepsbasedonextrudedprofileswithanti-sliptreadplateswithfive-barpattern(photo1); 2.Stepsbasedonprofileswithextrudedlongitudinalgroovesandmachinedtransversalgrooves(photo2); 3.Stepsbasedonextrudedprofileswithanti-sliptreadplateswithperforationswithstandingedges(photo3).

Risers available on demand.

Forfurtherdetailspleaserefertothetechnical descriptionpage2.30andnext.

steps

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variant: “esCadesign” with polygonal balConies

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System based on prolonged stringers. The lower flight hastwo prolonged stringer sides which project over the rotation point.Thecounterweightisputinsidethesestringers.Thankstothecounterweights,theflightisinequilibriumatitsrota-tion point.

CounterbalanCed stairs

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two counterbalancing mechanisms are available:

Cableandpulleysystem. The counterbalance is applied to the tipofthestairflightviaasystemofoneormorecablesandpulleys. The cable connects to counterweights that move in-sideahollowprofile,whichispositionedvertically.

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CounterbalanCed stairs with prolonged stringers

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CounterbalanCed stairs with Cable and pulley system

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enClosed lower flight, inCluding aCCess door with Crash bar

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gates to seCure the aCCess to the stairs

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paneling (1/2)

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paneling (2/2)

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Custom balConies and passageways (1/2)

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Custom balConies and passageways (2/2)

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guardrails on ConCrete, handrails against the wall

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further examples

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further examples

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further examples

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1. ConfigurationThestaircaseisbasedonstraightflightsinthefollowingconfiguration(please select one):

1.Inlinestairs:allflightsareinoneline,withalandingatleastevery17steps(Belgium),oraccordingtolocalspecifications;

2.Crossed stairs, parallel to the façade: allflightsareparalleltothewall.Thestaircaseiscomposedoftwocrossedflightspersto-ry, one access landing per exit and one in-termediatelandinginbetweentwostories;

3.Crossedstairs,perpendiculartothefaçade:allflightsareperpendiculartothewall.Thestaircaseiscomposedoftwocrossedflightsper story, one access landing per exit and one intermediate landing in between two stories. The intermediate landings are braced to the wallinordertoimprovestability;

4.Rectangularstairlayout:flightslaidoutinasquaresothattheyarealternativelypar-allel and perpendicular to the wall. In be-tween twoflights a landing is put at eachcorner of the square. Each story has oneaccess landing, three intermediate land-ingsandfourflights.

2. materialsOnly materials not subject to corrosion can be used:extrudedprofilesandplatesofhighresis-

tancealuminumalloy,anodized10micron,nat-uralmatfinishing;fastenersofstainlesssteel,A2-70DaN/mm2.

No protective treatment, painting or mainte-nanceisrequired,exceptwhenexposedtoag-gressive environments.

Welding is not allowed. Only 45° corners oflanding frames, if applicable, can be reinforced via welding.

Besides for fasteners, steel is excluded, except in cases of extreme span, in which case an adequateisolationbetweensteelandaluminumshall be applied, to prevent any electrolytic coupling.

ThestaircasecanbefactorypaintedinanyRALcolor by polyester powder coating (option).

3. CompositionThe staircase is partly pre-assembled in the factory, usingbolts and rivets.Final assemblyof the staircase is executed on the construction site.Thestaircaseisfixedtothewallusingboltsandaluminumalloyprofiles.

3.1 Stringers

The stringboards are made of hollow profilesof8-3/16”x1-3/16”x5/64”or208x30x2mmwithdoublechamber.Theirslopeis37°(or45°;

otheranglesonrequest).Theymakeupstraightflightsthathaveausefulwidthof…ft/cm(be-tween1’11”or60cmand3’11”or120cm).

3.2 Steps

The steps are made of aluminum alloy extruded profiles.Theyhaveananti-sliptread:

1.Steps based on extruded profiles coveredwithanti-sliptreadplateswithfive-barpat-tern,thickness3/32”to5/32”(2.5to4mm);

2.Stepsbasedonprofileswithextrudedlon-gitudinal grooves and machined transversal grooves;

3.Stepsbasedonextrudedprofiles coveredwith anti-slip tread plates with perforations (Ø3/8”or9mmandØ9/16”or14mm)withstandingedge,thickness1/8”or3mm.

Riseheight: ±7”or18cm

Treadlength: 9-7/8”or25cm

Nosing: 1-3/8”or3.5cm

Risersavailableonrequest(option)

This text is available on our website: www.jomy.be

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3.3 Landings

The frames of the landings are composed of hollow profiles of 8-3/16” x 1-3/16” x 5/64”or 208x30x2mm with double chamber.Joists of no less than 1’11” x 13/16” x 5/64”or 60x20x2mm spaced at no more than 1’or 30cm are fixed in this frame. These joistssupport adeckmadeof aluminumalloy treadplates that are perforated to drain rain water. The tread plates are riveted to the joists. The allowed tread plates are either five-bar pat-ternplateswiththickness3/32”to5/32”(2.5to4 mm), or plates with perforations (Ø3/8”or9mm;andØ9/16”or14mm) with standing edge andthickness1/8”or3mm.

The minimal width of the landings will be at least5”or15cminexcessoftheusefulwidthof the steps.

3.4 Guardrails

Theguardrailsofflightsandlandingsarelinked.Theyaremadeofahandrailofatleast1-15/16”or50mmwide,havingroundededges(radiusatleast1/16”or1.5mm)andmountedontohollowpicketsof2-3/8”x1”x1/8”or60x25x3mmwithroundededges.Thepicketsarefixed intothe stringers and in the landing frames at least every2’5”or74cm.Inbetweenthesepicketsisconstructed:

1.Eitheraguardrailwiththreeroundtubesof11/16”x5/64”or18x2mm,setparalleltothehandrailandrunningthroughthepick-ets;

2.Eitheraguardrailwith square tubesof 1’ x1’ x 1/16” or 25x25x1.5mmwith roundededges,putparalleltothepicketsandspacedat4-3/8”or11cm;thesetubesarefixedintothehandrailatthetopandinasquaretubeof1-3/16”x1-3/16”x5/64”or30x30x2mmat thebottom.Thepickets run through thistube;

3.Eitheracustommadeguardrailaccordingtoagreedspecifications.

Theheightoftheguardrailisatleast3’3”or1monthelandingsandatleast2’11”or90cmontheflights,measuredatthestepnosing.

Forsecureevacuation,nopartofthestairshallinterferewiththeflowinglineofthehandrails.The handrails are at least 1-1/2” or 40mmcleared from all obstacles.

On request, the manufacturer can provide achildren’shandrailatintermediateheight.

3.5 Supporting structure

Dependingonthetypeofstair,thesupportingstruc-ture shall consist of columns or of wall bracings.

Thecolumnsand/orbracingsaremadeofU-

shaped or L-shaped channels of appropriatesizes, with rounded edges. They will providethe required mechanical resistance (see item4). The columns will be constructed on an ad-equate foundation.Thewallbracingsarefixedto the wall by anchor bolts of adequate sizesand numbers.

4. mechanical propertiesThe stair will be able to support a uniformly dis-tributed loadof102 lb/ft2 or500Kg/m2 on the flights(onthesurfaceprojectedonthehorizon-tal plane) and landings as well as a point load of 440lbor200Kgappliedanywhereonthestepsorlandingdeck(standardsNBN1-50andNFP06-001).

Theguardrailswillwithstandahorizontallyap-plieduniformloadof67lb/ftor100Kg/mwith-outpermanentdeformation(standardsNBN03-103,NFP06-001andNFP01-012).

The manufacturer shall share, on request,his calculations of stability, deformations and stresses.

This text is available on our website: www.jomy.be

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5. Counterbalanced stairIn order to prevent improper use and / or limit theuseofspaceatgroundlevel,thelowerflightof the staircase can be counterbalanced (op-tion).

5.1 Pivoting

The pivoting system is comprised of two guiding ringsofpolyamidereinforcedbyfiberglassandaspindle indrawnstainlesssteelof13/16”or20mmdiameter.

5.2 Counterweight

Two types of counterweight positioning are pos-sible:

1.System based on prolonged stringers. Thelowerflighthastwoprolongedstring-er sides which project over the rotation point. The counterweight is put inside these stringers. Thanks to the counter-weights,theflightisinequilibriumatitsrotation point.

2.Cableandpulleysystem. The counterbal-anceisappliedtothetipofthestairflightvia a system of one or more stainless steel cables and pulleys. The cable connects to counterweights that move inside a hollow profile,whichispositionedvertically.

5.3 Blocking

Theflight isblocked in itsupperpositionbyamechanism controlled by a small gate on the access landing. Opening the gate automatically releasestheflight.Thecounterweightsensureasoftdescentoftheflight.

6. panelingThe manufacturer can provide a staircase pan-eling (option). This paneling consists of:

1. Either a curtain of vertically positionedaluminumalloyhollowprofiles,mountedon two horizontal structures per story.Theprofileswillbe(Please select):

- square (1” x 1” or 25x25mm), posi-tionedevery4”or100mm, leading to3” or 75mm wide openings betweentheprofiles;

- rectangular(2-3/8”x1”or60x25mm),positioned every 4-3/4” or 120mm,leadingto2-3/8”or60mmwideopen-ingsbetweentheprofiles;

- rectangular(4”x3/4”or100x18mm),positioned every 5-1/2” or 140mm,leadingto1-9/16”or40mmwideopen-ingsbetweentheprofiles;

- circular(7/8”or22mmdiameter),po-sitionedevery4”or100mm,leadingto

3-18”or78mmwideopeningsbetweentheprofiles;

- anotherstructure,tobespecified.

2. Eitherperforatedaluminumalloyplates,with5/64”or2mmthicknessandperfo-rations of Ø 3/16”or5mm(oradifferenttype of plate).

3. Either a different solution to be speci-fied.

7. guaranteeThe staircase and its installation have to be in-spected. The inspection report needs to be sub-mitted to the client within one month after the installation.

This text is available on our website: www.jomy.be

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www.jomy.be

info@jomy.be

Rue Bourgogne, 20

B-4452 Wihogne, Belgium

Tel. +32 4 278 55 12

Fax +32 4 278 26 75