TECHNICAL SPECIFICATION - Variflex 88
Movable partition wall of individually operable elements with a steel-aluminium frame construction. Clad on both faces with cover boards in E1-quality to DIN, hung in vibration-free suspension for acoustic isolation.Structure-borne sound transmission to be reduced to low level by acoustically isolated vertical profiles. Integrated hollow-chamber lip seals to be provided in aluminium coloured finish. The element thickness must not be 88 mm. The entire system must function as a solid wall and even when closed should reveal no screws, fixings or other similar metal parts.
In order to allow the load-bearing structural components of the recipient building to be dimensioned against flexion in an appropriate, cost-efficient manner, the specific weight per unit area of each element shall not exceed 49 kg/m2 for a sound insulation value of Rw = 58 dB, 41 kg/m2, for Rw = 55 dB, 32 kg/m² for 53 dB, 24 kg/m² for 46 dB and 23 kg/m2 for Rw = 411 dB.Partition constructions exhibiting higher unit weights are therefore not permitted.
Sound attenuation achieved with the operable partition to satisfy EN 20 140-3:1995.
Measurement to be performed on a wall test facility to EN ISO 140-1: 1998. Calculation of the weighted sound attenuation value and of the spectrum adaptation terms/values to be compliant with EN ISO 717-1: 1997.
The following quality features are required in order to ensure long and disruption-free service:
Frame construction
To be of torsionally aluminium and steel profiles.
Extensible strip seals
The elements must feature spring-loaded operable double sealing strips top and bottom that can be pressed via a spindle mechanism (trapezoidal thread) against the surfaces of the floor and of the ceiling track, automatically compensating for unevenness in the floor.
In order to ensure optimum vertical sealing between the extended sealing strips, and sealing strip end elements must be in the form of polyurethane mouldings.
The sealing strips must be of aluminium and capable of meeting the highest requirements in terms of acoustic attenuation and stability.Extension travel of the sealing strips top and bottom to be up to 30mm in both cases.
Element interconnection
The elements must be interconnected by means of a positively and frictionally retained interlocking concave/convex sheathed aluminium profiles with an integrated magnetic strip having a linear attraction of min. 40 N/m. Metal components to be invisible when partition both open and closed.
Additional vertical outboard seals at element abutment joint.
Telescopic element
The final closing element of the partition in each case shall be designed as a flush-closing telescopic compensation element without protruding or receding edges. Its function must be ensured over its full height by means of a triple-action spindle/lever drive mechanism.Construction elements such as folding flaps are not permissible.
The compensating component is to be constructed from 16 mm thick three-ply high-quality particle boards with an E1 rating per DIN standards. Material identical with that of the main partition.
A useful extension stroke of up to 120 mm must be available in order to ensure flush-closing of the partition, and the contact pressure must be adjustable between 0 and 1000 N.
Pass door element
If pass door or double pass door elements are to be provided as part of the configuration, these are to be equipped with a surrounding portal frame of sturdy steel sections.The lateral posts must be provided with compression beams to ensure positive engagement with the floor.A further connection must be provided in the form of locking projections engaging in floor sockets.The door leaf must be provided with a steel frame and an automatically operable sealing strip.
The sealing components that engage flexibly with the ceiling (sealing strip) and floor (sealing feet in the door posts) must be operable from the front face.Additional means for ensuring the stable location of the door are not permissible.
In the case of double pass doors, one leaf should be equipped to function as the active leaf and one as the inactive leaf with emergency unlocking function.
Element suspension
Each element must be hung at one or two points from a ceiling-mounted track of aluminium and operate on maintenance-free multi-directional carriers featuring track rollers mounted in ball bearings.The carriers must be secured to the element by means of shock-absorbing/impact-damping rod elements.No ball races or sliding friction pads/discs.
Element adjustability
In order to compensate for any small degree of ceiling sag, each element must be adjustable without the need to open up the ceiling cavity or the element itself.In the event of superficial damage, it must be possible to replace the panels without removing or dismantling the elements or other components of the construction.
Track rail system
The track must be absolutely maintenance-free.
Intersections, T-junctions and corner elements must be closed-die forgings and equipped with support roller assemblies.In order to ensure the easy operability of the elements, including at track junctions and in the stacking/parking area, rolling friction must be ensured at all points along the track.
Track installation
Track systems are to be secured by means of adjustable steel suspension assemblies to load-bearing structural components provided by others (e.g. steel substructures, concrete beams, etc.). The suspension assemblies are to be supplied by the bidder.Steel suspension assembly adjustability must be ensured to compensate for any subsequent slight ceiling sag.Rigid, non-adjustable hanger constructions are not permitted.
The materials employed must be provided with a corrosion-inhibiting coating/treatment.
The partition systems offered shall exclusively feature track constructions and suspension assemblies complying with the definition of “simple steel structures” as per DIN 4100 (see also VOB [Construction Contract Procedures], Part C, DIN 18335).
According to State Building Regulations, the bidder shall possess a certificate of welding competence (e.g. to DIN 4100 – Certificate of competence for the welding of simple steel structures subjected to predominantly static loading).A copy of this certificate must be attached to the quotation.
Sound baffle
A double-skin sound baffle (attenuation up to Rw = 48 dB) or a quad-skin sound baffle (attenuation Rw = 49 dB to Rw = 55 dB) or six-skin sound baffle (Rw = 57 dB) must be provided by the bidder to correspond to the specified sound reduction value of the partition elements. A clean, tight seal against the head track and adjacent building parts must be ensured.The cavities between the plasterboard skins must be filled with non-settling mineral wool.The ceiling joints must be sealed with silicone mastic filler (permanently elastic type).The above substructures/assemblies, fills and baffle systems must be included in the unit prices.
For the operable wall an Environmental Product Declaration (EPD)according to ISO 14025isassignedto. The life cycle analysis(LCA)mustbe performedin accordance with ISO14040, the methodological frameworkis theecological balance.
General quality management / ISO certificate
The manufacturer of the partition system must have introduced and must operate a registered quality management system to (DIN) (EN) ISO 9001 and be able to confirm this with a valid certificate.
Certificate registration no.: ...... valid until ......
Item 1
Quantity:
- Operable partition system as described above =………… Nos.
Dimensions:
- Clear width = ……………mm
- Clear passage height = … …………mm
- Height of suspension = …………mm
- Weight of partition/m2 =………… kg
- Element thickness =………… mm
Cover panel design / Profile type and design:
( ) Type K (cover panel design with visible surface edging)
( ) Type U (cover panel design with protective all-round edging)
( ) Cover panels of B1 rating (flame retardant) to DIN 4102-B1
Elements:
- Comprising:=… ………Nos.Total no. of individual elements:
of which:
- Fullwall elements (VE) =………Nos.
- Closure/abutment element:
( ) Telescopic elements (TE) =……… Nos.
( ) Sliding pass door elements (DT) =……… Nos.
( ) Sliding double pass door elements (DTZ) =……… Nos.
Surface finish:
Design Collection:
[ ] Veneer:Wood type …….…......
[ ] Metallic decors:
( ) Aluminium
( ) Stainless steel
[ ] Painted to RAL:Colour ….………
Classic Collection:
[ ] Laminate: DORMA Hüppe Collection/Selection:……………
Functional Collection:
[ ] Projection surface:…….
[ ] Projection surface, magnetic:…………...
[ ] Magnetic/Writing surface: ......
Sound insulation:
( ) 41 dB (23 kg/qm) with certification
( ) 46 dB (24 kg/qm) with certification
( ) 53 dB (32 kg/qm) with certification
( ) 55 dB (41 kg/qm) with certification
( ) 58 dB (49 kg/qm) with certification
Stacking track:
- Layout as per enclosed drawing
Element suspension:
( ) Single-point suspension, only possible with 90° stacking track and subject to weight / height restrictions
( ) Two-point suspension
Track system:
( ) R-type track profile of aluminium, right-angled junctions with L, T and X- pieces – up to 500 kg
( ) K-type track profile of aluminium, coded, positive track guidance system with curves and switch-type junctions – up to 250 kg
Brand:DORMA Hüppe
Type: DORMA Hüppe Variflex 88
Unit price includes delivery and
installation ready for operation.U.P.
799tk