Spiral and Helical Staircases

Spiral and Helical Staircases

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Industrial Spiral Staircases

Weland spiral staircases are manufactured with treads of grating or checkered plate. Safety nosing is included on all grating treads and platforms The staircases are suitable for access to and egress from all types of areas.

Applications include maintenance platforms, storage mezzanines, silos, water towers, theater catwalks, observation decks and pump stations.

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FlexibleSpiral staircases require the same small footprint irrespective of how high they are. They can be manu-factured left turning or right turning and have a different number of treads per revolution. This means that, as a rule, you can always achieve an efficient staircase.

Light DesignSpiral staircases normally do not demand extra load carrying constructions provided the lan-dings are not excessively large.

Space saving/ Pre engineeredA spiral staircase with a radius of 3’ and a square landing of 3’ 4” x 3’ 4” requires a footprint of only 6’ 4” diameter.

Spiral staircases are a space-saving and effective staircase design.

Extended heights require no special stair tower.Spiral staircases can be built very high without any extra supports, provided it can be braced against an adjacent structure. It there is not adjacent structure that can be used, Weland will provide pre-en-gineered supplemental column supports up to a height of 25’.

SafeA person who stumbles on a spiral staircase will likely have his or her fall arrested in about 90 de-grees of staircase rotation (~3’ of height). The spiral design prevents a long tumbling descent over many steps.

Pre engineered

Escape / RescueSince spiral staircases are com-fortable to descend, an escape can be carried out quickly. Rescue efforts involving a stretcher can also be performed on spiral stairs with a large radius (4’ recommen-ded).

Knocked down constructionThe whole spiral staircase is fur-nished knocked down, in a crate. There are no parts that require a crane to lift. No welding required!

This means that a spiral staircase can easily be installed in cramped spaces, using hand tools, without needing a crane or cherry picker.

Easy to erectThe spiral staircase consists of parts that are assembled on site.

The only tools required are a hand drill, a ratchet and a set of Allen wrenches.

Please note!

No welding is required to install a spiral staircase from Weland.

Comprehensive assembly instructions are included with every delivery.


Also see the installation movie on our website www.weland.se

Surface TreatmentWeland industrial spiral staircases are furnished hot dip galvanized as standard in accordance with class SS-EN ISO 1461.

Read more about surface finishes on www.weland.se


When you furnish the desired height and radius of the staircase, Weland will design the particulars to include riser height and steps per revolution.

We furnish an approval drawing for your further comments, and then manufacture according to the drawing you approve!

Design and OSHA

All Weland designs comply with all applicable OSHA requirements.

Spiral staircases are a very useful solution to most access problems


Spiral staircase standard

Stair TreadsStandard treads are grating TH6-S with safety nosings, or checkered plate treads, hot dip galvanized.

Grating plate step TH6-SGrating plate step with safety front edge. Mesh width is c/c 33 x 50 mm.

Checkered plate treads

Spiral staircases are a very useful solution to most access problems


Spiral staircase standard

RailingsWeland produces four different railings for spiral staircases. The choice of railing depends mainly on where the stairs are to be placed and whether children will be in the area where the spiral staircase is installed.

All railing systems are hot dip galvanized as standard.

The height of the railing is ~43-1/2” at the nose of the step.

Tubular infill panelsThis balustrade with tubular infill panels is a child-proof balustrade, i.e. the opening between the tubes and the balusters is maximum 4”.

Balustrade with intermediate railsThis balustrade can be furnished with 1, 2, 3 or 4 intermediate rails of 2” x 1/8” flat bar. This choice does not meet the 4” sphere rule.

Standard Industrial BalustradeStandard industrial balustrade with one baluster per tread is often used for indu-strial applications. It may also be applied to emergency egress staircases.

Additional HandrailWeland industrial spiral staircases with an additional handrail. The alternative handrail is placed un-der the 43-1/2” high handrail and is usually furnished at a 34” height.

Inner HandrailThe spiral staircase can also be equipped with an inner handrail. The handrail is placed on the centre tube.

Additional Handrail

Handrail

Inner Handrail

Round bar railingThe round-bar balustrade is exactly the same as the balustrade with tubular infill panels a child-proof alternative with maximum 100 mm opening between the belusters.


Right turning Left turning

Square landings/ Intermediate landings

Square landings

Square landings are designed as a 90° step-off plat-form. Different designs are available according to the customer’s needs.

Intermediate landings

Intermediate landings covering 90 degrees are fur-nished if desired. The perimeter of these landings is circular to match the OD of the staircase.

Square landingStandard square landing for placing in corners or affixing to stair well edge.

Landing with radius90° landing with radius suitable for affixing to circular stair well edge.

Terminal treadTerminal tread for affixing to an existing stair well edge.

Landing railing/End railingAs standard the spiral staircase is furnished with an end railing at the rear of the square landing, posi-tioned from the center tube to the periphery of the staircase.

Right or left curved staircasesWeland spiral staircases are manufactured as right or left turning. Right turning means turning to the right from the entrance point (the center tube to the right of upward travel).

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Winding stairs with curved stringers. Same choice of treads and balustrades as spiral staircases. The staircases can for instance follow the outside or inside of a silo. Radius, tread width and other data are are designed per the dictates of the application.

Surface treatment hot dip galvanizing according to SS-EN 1461.

Helical StaircasesWinding stairs with curved stringers.

Treads and railings in the same as for spiral staircases.


See more on www.spiralstaircases.biz

Weland AB | Box 503 | SE-333 28 Smålandsstenar | Sweden

Phone. +46 371 344 00 | Fax: +46 371 344 78

E-mail: [email protected] | Homepage: www.weland.se

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HIDEK Supply | 3309 Brookrun Drive | Jamestown | NC 27282

Phone. (336) 855-7279

E-mail: [email protected] | Homepage: www.spiralstaircases.biz

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Spiral and Helical Staircases