peace at last in the staircase with variosonic sl and ... · pdf filestaircase bearings from...

10/2012

PFEIFERSEIL- UND HEBETECHNIKGMBH

DR.-KARL-LENZ-STRASSE 6687700 MEMMINGENTEL. Support +49 (0) 83 31-937-184

Sales +49 (0) 83 31-937-312FAX +49 (0) 83 31-937-342E-MAIL [email protected] www.pfeifer.de

Peace at last in the staircasewith VarioSonic SLand VarioSonic SLE

Adjustable under

load without a crane

PFEIFER staircase bearingsVarioSonic SL and VarioSonic SLE

Treppenaufl_5c_12s_dt_v7.qxd:2051263_Pfeifer_VarioSonic.qxd 29.10.2012 11:59 Uhr Seite 1

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The ideal way to a perfect staircase construction– and we adapt to your requirements!

Cost-effective, flexible, reliable, easy– whichever way you look at it, there is only one solution: PFEIFER VarioSonic

Staircase bearings from PFEIFER are impressive from every angle. After all, the other components like the waveanchors and the PFEIFER sleeves have proved themselves millions of times over. Step by step. Benefits:

1. Exemplary footstep sound insulation2. Height adjustment is possible even under load3. Fast and uncomplicated installation4. Already type-approved by the relevant authorities – offering total peace

of mind for planning5. They cover all the possible load ranges for all standard staircase dimensions

In summary, what does this mean for you? The use of simple components, like wave anchors orPFEIFER sleeves, which have been tried and tested millions of times over, will help you to save costs.

Why not find out for yourself?

Simple technology,

fast and flexible

We have the right

component for every

installation scenario.

With PFEIFER VarioSonic you

can shorten installation

times and achieve greater

footstep sound insulation

with intermediate and end

bearings for staircases.

VarioSonic SLE end bearing

VarioSonic SL intermediate bearing


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With PFEIFER VarioSonic you can save every step of the way – both in terms of decibels and Money.

Planning benefits

• New structural type approval in accordance withDIN EN 1992-1-1

• Planning flexibility thanks to the ability to perform heightadjustments at any time

• Excellent footstep sound insulation, increased requirementsaccording to DIN 4109 are satisfied

• Gap widths of up to 3 cm between the flight of stairs and thewall are possible

Benefits in the production of the precastparts

• Easy installation of the anchors in the precast staircases• Reliable designs combining familiar individual components

such as the PFEIFER wave anchors or the PFEIFER sleeves• Minimal additional reinforcement required

Benefits in the assembly of the precast parts

• Optimised processes offer noticeably shorter installation andassembly times

• Post-installation adjustment capability significantly shortensthe crane installation time of the flights of stairs

• Easy adjustment of the stair height by means of the threadedadjustment device with hexagon means that height adjust-ments can be performed without the aid of a crane

• No protruding parts when swivelling in the stairs from aboveinto the staircase

Purchasing benefits

• Installation costs reductions of up to 50% can be achieved• Minimal installation costs and wage bills thanks to the excep-

tional ease of handling

• Handy packaging form for easy storage

• Easy handling saves installation time and wage bills

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Unique – the intermediate stair bearing which can be adjusted under load without a crane ...– flexible, fast, reliable ... cost-effective!

Commercial successShorter planning times, shorter crane times and the faster assembly and installation mean that staircases can be completednoticeably faster. With no protruding parts to obstruct the precastparts while they are being swivelled into the staircase and thedesign and construction flexibility which results from the height-adjustment capability, installation engineers will be thrilled.

Fire resistance of at least 90 minutesA fire resistance time of 90 minutes can be achieved if the staircase bearings are installed in accordance with the currently valid installation instructions. This means that the requirements for domestic buildings are satisfied.

Height-adjustable under loadSubsequent definition of the floor level height is no problem, as theheight of the stairs can be adjusted to the required level at anytime. This means that installation tolerances are extremely easy tocompensate for.

Superb footstep sound insulationThe excellent – and above-average – noise insulation properties ofthe VarioSonic staircase bearings offer optimum sound insula tion

between the staircases and the living areas at all times.The increased requirements in terms of footstep sound

insulation in accordance with DIN 4109, sheet 2:1989-11are satisfied.

90 Min.fire resistant

Structural type approval testingThe VarioSonic SL staircase bearing is structurally type approved in accordance with DIN EN 1992-1-1 and therefore does not

require any additional static verification.This means that all building

regulations require ments aretherefore satisfied.

Adjustable Range

± 25 mm


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Material:

Sleeve: precision steel tube, galvanizedLateral force bolt: high-strength steel,galvanizedNeoprene bearingsFoam boxPlastic data clip

VarioSonic SL-WS VarioSonic SL-HS VarioSonic SL-W VarioSonic SL-H

PFEIFER intermediate staircasebearings VarioSonic SLItem no. 05.370

Connection elements

Staircase bearings

The PFEIFER intermediate staircasebearing VarioSonic SL is designed as an intermediate bearing whichabsorbs the vertical components ofthe moment of tilt of angled or twistedstaircases. It is also possible toanchor stair landings of precast staircases at four bearing points withthe aid of the VarioSonic SL. Cutoutsare positioned in the rising staircasewalls into which the supporting foot is supported. When the stairs are swivelled in, no part of the com -

ponents protrudes in the way of theprecast parts.The bearings can also be used totransmit the vertical influences at thestarting points and end points ofangled, twisted or even straight stairsonto the floor.

Type testing report and detailed installation instructions can be downloaded from the Building Technology download area of www.pfeifer.de.

© 2005 Copyright PFEIFER, D-87700 Memmingen. Subject to technical alteration. Errors excepted. Date: 10/2012

Ordering example: PFEIFER intermediate staircase bearing with sleeve and staircase bearing data clip, foam box, lateral force bolt with positioning foot (galvanized)and neoprene bearing: 200 PFEIFER VarioSonic SL-HS, ref. no. 05.370.222.3.

Ref. no. Type Dimensions in [mm] Pack. units WeightM l e h m E D t d v a b H ü [units] [kg]

05.370.422.3 SL-H 150 36 150 62 120 16 50-90 100 18 10 25 1 2,8005.370.322.3 SL-W 150 36 150 62 120 16 50-90 100 18 10 25 1 4,1505.370.222.3 SL-HS 150 36 150 62 120 16 50-90 100 18 10 25 145 180 200 15 1 3,1505.370.122.3 SL-WS 150 36 150 62 120 16 50-90 100 18 10 25 145 180 200 15 1 4,50


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Commercial successShorter planning times, shorter crane times and the fasterassembly and installation mean that staircases can becompleted noticeably faster. With no protruding parts toobstruct the precast parts while they are being are swivelled into the staircase and the ease with which theheight of the bearings can be adjusted from above via the hexagon, installation engineers will be thrilled by thedesign and construction flexibility afforded by this solution.

Fire resistance of at least 90 minutesA fire resistance time of 90 minutes can be achieved if thestaircase bearings are installed in accordance with the currently valid installation instructions. This means that the requirements for domestic buildings are satisfied.

90 Min.fire resistant

Structural type testingThe VarioSonic SLE staircase bearing is structurally typeapproved in accordance with DIN EN 1992-1-1 and there-fore does not require any additional static verification. This means that all building regulations requirements are therefore satisfied.

Height-adjustable under loadSubsequent definition of the floor level height is no pro-blem, as the height of the stairs can be adjusted to therequired level at any time. The staircase height can still beadjusted years down the line!

Superb footstep sound insulationThe excellent – and above-average – noise insulation pro-perties of the VarioSonic staircase bearings offer opti-mum sound insulation between the staircases and the living areas at all times. The increased requirements in terms of footstep sound in sulation in accordance with DIN 4109, sheet 2:1989-11 are satisfied.

Unique – the intermediate stair bearing which can be adjusted under load without a crane ...– flexible, fast, reliable ... cost-effective!

Adjustable Range

± 25 mm


l

7

Verbindungselemente

Treppenauflager

PFEIFER end staircase bearingsVarioSonic SLEItem no. 05.371

Material:

Galvanized steelNeoprene bearingsPlastic tube

Ref. no. Type VRd [kN]* Dimensions in [mm] Plastic Packaging Weightpipe units

D t d h b m E l [units] [kg]

05.371.122.3 SLE 33,6 100 18 10 120 20 M16 40-100 200 4 3,9

Connection elements

Staircase bearings

* Rated resistance of the bearing force.

Ordering example: PFEIFER end staircase bearing with a rated resistance of VRd = 32.6 kN, with positioning foot and installation flange, neoprene bearing andplastic pipe: 400 PFEIFER VarioSonic SLE, ref. no. 05.371.122.3.

The PFEIFER end staircase bearingVarioSonic SLE is used on straight orangled flights of stairs in order tosupport the end points on the flooror the stair landings. To do this, acorrespondingly formed bracket is installed on the stairs. The VarioSonic SLE is positioned at theunderside of the bracket, where itcan transmit the vertical force com-ponents into the floor. Up to a ratedresistance of 33.6 kN per bearingpoint can be fully transmitted – both

in terms of the static force com -ponents and the variable influences.The building regulations approvedelastomer bearing underneath thepositioning foot of the VarioSonic SLEoffers reliable insulation of footstepnoise between the staircase and thefloor.

© 2005 Copyright PFEIFER, D-87700 Memmingen. Subject to technical alteration. Errors excepted. Date: 10/2012



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The rated resistance is depending on the width of the joint and the position inthe precast element as pic. 6. If there is a large edge gap it may be necessaryto order the longer lateral force bolts. Planned lateral forces cannot be applied.A stable support must be provided (Fig. 5).

Dimensioning of the VarioSonic SLDifferent gap widths f can arise as a result of variations in the design of the stairgap, for example due to fire regulations. The rated resistance of the bearing for-ce is shown as a function of the gap width in the diagram in Fig. 6. Exact com-pliance with the boundary conditions specified in planning is required in orderto avoid excess loads.

Installation: Edge and axis distances of the anchors in the precast staircaseor landingThe local load transmission into the concrete is ensured by maintaining the dis-tances between the bearings themselves and between the bearings and the freeedge – see Fig. 7. The minimum component thicknesses required here mustalso be satisfied. The lower distance from the anchor to the edge of 90 mmapplies to a concrete cover thickness of c = 2.5 cm. This distance needs to bechanged accordingly if the concrete cover has a different thickness.

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

50 55

rate

d re

sist

ance

VEd

[kN]

lever arm a [mm]60 65 70 75 80 85 90 95 100

uncracked concrete without edginguncracked concrete with edgingcracked concrete with and without edging

Installation instructionsPFEIFER VarioSonic SL staircase bearings

Application areaPFEIFER VarioSonic SL staircase bearings are designed to transmit the verticalinfluences from angled or twisted precast staircases (Fig. 1) or precast stair landings into the wall of the staircase (Fig. 4). Corresponding cutouts need topositioned in the staircase walls for this purpose. They can also be used asbearings at starting or end points (Fig. 2-3) of flights of stairs at the landing orthe floor.

Fig. 2:Bearing on a staircase landing withVarioSonic SL without a sound insulation box

Fig. 3:Bearing on a staircase landing withVarioSonic SL with a sound insulationbox

Fig. 4:Bearing supporting a flight of stairs or landing with VarioSonic SL in thestaircase wall

Fig. 1

Fig. 6

Fig. 2

Fig. 3

Fig. 4

Fig. 5


9

275

10090

90

275

100

550200

Surface pressure: σ = VRd [N/mm2]7853

area must be capable of absorbing the pressure forces which depend upon thevertical influences. In the case of brickwork walls, it may also be necessary toinstall a concrete layer.

The dimensions of the cutout can be made smaller if no further footstep noiseinsulation measures are to be installed (e.g. when using the SL-H or SL-W without foam box).For fire safety reasons the back of the cutout often needs to be closed off orremain closed. The minimum residual wall thickness should be chosen inaccordance with the fire safety regulations. This results in the minimum wallthickness for the staircase wall.

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Installation of the lateral force boltsVariations in the design of the stair gap can result in variations in the bolt over-hang ET and therefore variations in the gap widths f (table 1). Different gapwidths necessitate different screwing-in depths of the lateral force bolt. Theminimum screwing-in depth is 40 mm.The lateral force bolt transmits the vertical influences as a cantilevered armwhich is screwed into the sleeve in the positioning foot. Depending on the gapwidth f, the lateral force bolt is subjected to varying bending moments, while thelateral force is not changed as a result. The rated resistance of the bearing f orceis shown as a function of the gap width f in the diagram in Fig. 6.

Side cutout openings in the staircase wallA corresponding cutout must be provided in the staircase wall if the VarioSonicSL staircase bearing is used. The lateral force bolt protrudes into this cutout,and the positioning foot rests upon the base area of the cutout. The openingmust be large enough to allow subsequent turning of the positioning foot aroundthe lateral force bolt. The minimum dimensions are shown in Fig. 8. The base

At least 150 mm

At le

ast 4

00 m

m

Concreted cavityCutout at least 40x20x15 cm

Plaster

Steel plate cover (t=1 mm)to hide the bearing and prevent it from falling o

Stone wool (melting point above 1000°C)

Avoid sound bridges (e.g. using silicone)

Avoid sound bridges (e.g. using silicone)

Steel plate cover (t=1 mm)to hide the bearing and prevent it from falling o

Plaster

Fig. 7

Fig. 8

Fig. 10


Anchor selectionTwo different anchor types are available: the PFEIFER wave anchor and the PFEIFER socket. The corresponding choice should be made in accordance withthe data sheet when ordering. The wave anchor is a complete lifting anchor,including the load-bearing main reinforcement in the form of a wavy, pressed-in concrete steel anchor. However, the PFEIFER socket may be a better choiceparticularly in applications where space is restricted in the longitudinal direc tionof the anchor (twisted staircase). Here, the main load-bearing reinforcementshould be installed at the site in accordance with the installation instructions forPFEIFER socket. The reinforcement should be adapted to the geometry of thecomponent.

Additional reinforcement for lateral tensile force acting on the anchors in the staircase or landingIn addition to the standard reinforcement provision of reinforcement in precastflights of stairs or stair landings, a lateral tensile reinforcement should also beinstalled which transmits the vertical forces at right angles to the componentplane. The lateral tensile reinforcement comprises a holding pin with a lateral barin accordance with the installation instructions for PFEIFER wave anchors (Fig.9). It is secured without play or gap to the front end of sleeve of the anchor (Fig.10) by means of the VarioSonic data clip. This is very important for an effecti-ve transmission of forces. The flame-red VarioSonic dataclip is visible at thefront end of the precast stairs and ensures that a non-designated and properlyreinforced lifting anchor is used by mistake. The lateral bar can be angledthrough 90° if the installation is close to the edge and directed rearwards withthe standard concrete cover (Fig. 7).

Fig. 9


10

60

BSt 500S

Installation instructions for PFEIFERVarioSonic SLE stair bearings

Application area

PFEIFER VarioSonic SLE stair bearings are used on straight or twisted stairs to support the ends on the floor or landings (Fig. 10). To do this, a formed bracket is installed on the stairs and on the floor. The VarioSonic SLE is positioned between floor and stairs, where it transmits the vertical force com-ponents.

Components

The VarioSonic SLE is supplied as a complete unit. As can be seen in Fig. 11,it comprises an positioning foot with a neoprene bearings, the installation flan-ge and the plastic pipe.

Transmission of forces

In accordance with the static type verification, a rated resistance of 33.6 kNapplies to the VarioSonic SLE bearing.The verification calculations for the transmission of forces in the concrete andthe design of the concrete consoles including the positioning of the reinforce-ment are to be performed by the engineer responsible for the load-bearingstructure. A qualitative positioning of the reinforcement in the flight of stairs isshown in Fig. 13.The pressure forces (depending on the vertical influences) underneath the SLEneed to be taken into account:

Installation

Minimum and intermediate distances need to be taken into account duringinstallation of the VarioSonic SLE staircase bearings. These can be seen in Fig. 12, which also shows the adjustment potential and gap distances. Theminimum plate thickness of 100 mm must be satisfied, whereby any protrudingplastic pipe can be simply cut off.

Surface pressure: σ = VRd [N/mm2]7853

Plastic tube

Installation flange

Positioning foot with neoprene bearing

Fig. 10

Fig. 12

Fig. 13


11

� Enquiry� Order Please tick the relevant box.

PFEIFER SEIL- UND HEBETECHNIK GMBHGeschäftsbereich BAUTECHNIKPostfach 1754 - D-87687 Memmingen

Fax +49 (0) 83 31-937-342

Item Type designation in accordance Quantity Preferred delivery date Individual price Total pricewith the pictures above

This order is placed subject to the sales and delivery terms of PFEIFER Seil- und Hebetechnik GmbH, with which you are familiar.

Totalplus packagingand deliverycharge

Company

Street

Town, postcode

Contact name

Tel.

FaxBuilding project

Order form for PFEIFER staircase bearings

Details of company placing order

Delivery address(only if different

from the order address)

Date and signature

VarioSonic SL-WSVarioSonic SLE VarioSonic SL-HS VarioSonic SL-W VarioSonic SL-H


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/pdf

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This document is superseded when a new edition appears at www.pfeifer.de.

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Our products are sold by:

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312

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peace at last in the staircase with variosonic sl and ... · pdf filestaircase bearings from...

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