Bearings

mageba – Bearings for concrete and masonry constructions

Switzerland www.mageba.ch

2

Bearings

Bearings prevent structural damageContents

The role of bearings...............................2

Applications.....................................3

Product overview .................................4

LASTO®BLOCK.................................4

LASTO®FLONPAD............................4

LASTO®FLONBLOCK.......................4

RESTON®SPHERICAL......................4

RESTON®POT...................................4

LASTO®STRIP...............................4

LASTO®FOL.....................................5

LASTO®WALL.............................5

Constructive basis of bearing dimensioning ...........................6

Fix zone.............................................6

Shrinkage.......................................6

Temperature...................................6

Deflection..................................6

Point bearings ........................................7

Slab bearings .......................................8

Wall bearings .......................................10

The role of bearingsDisplacements and deformations arising in structures (due to thermal changes, shrinkage, creep etc.) cause inadvertent and uncontrollable constraints and forces during the buildings service life, unless be-arings are properly used.The resulting loads affect the static sys-tem and may, with excessive application of force and eccentricities, overload the building materials. Building damage such as cracking and spalling may result.

Functions• Introduce loads centrally• Absorb angle rotations from deflection

of the components, without increased edge pressure

• Permit horizontal movements as smoothly as possible

• Accommodate any unevenness and ma-nufacturing tolerances

• Thermal isolation• Reduce sound transmission The load-carrying capacity of a bearing is determined by the material and the design of the bearing core, the sliding pairing and the substructure.

Eccentral loadingRotation

Horizontal displacementShrinkage and creep

Deflection

Cracking Spalling following increased edge pressure

Cover picture:Project: Bornblick buildings, Olten, Switzerland Application: Slab bearingsSolution: LASTO®STRIP Linear bearings Construction year: 2002

Without bearings – cracking and spalling

With bearings – Long service life

Horizontal displacementShrinkage and creep

Deflection

Central loading

3

Fx,y

Mx,y

Fz

vx,y

αx,y

Fz

Mx,y

vx,y

αx,y

Bearings

mageba bearings – Solutions for all circumstances

Demands on our productsIn 2003, mageba was the first company in the bearing manufacturing sector to have its quality management system certified according to ISO 9001. As one of the world‘s leading manufactu-rers of bridge bearings for roads and rail-ways, mageba is subjected daily to the most stringent requirements with regards, for example, to safety and maintenance. For us this is a stimulus to further improve the high quality of our products and their application.

Our services• Preparation of special solutions for

the support of your structure • Consultation, and design of bearings • Training of engineers in the use of

bearings • Supervision and training of the buil-

ding contractor during installation • Inspection of installed bearings • Procurement/Costing • Execution of project-specific laboratory

tests

StandardsReinforced elastomeric bearings are regulated in Europe by EN 1337-3. This standard also concerns certain unrein-forced elastomeric bearings.

Wall bearingsThe LASTO®WALL wall bearings greatly decrease unwanted noise transmissions through the building.

Deformation bearings are suitable for:• Central force application • Absorption of large rotations • Absorption of small horizontal dis-

placements

Sliding bearings are recommended for :• Absorption of very large horizontal

displacements• Absorption of rotations• Central force application

LegendFz - Vertical forceFx,y - Horizontal forceMx,y - Movementvx,y - Displacementαx,y - Rotation

Point bearingsmageba‘s extensive range of high-quality, re-inforced and unreinforced deformation and sliding bearings, all constructional challenges can be overcome. For the highest building loads you can refer to our tried and tested pot and spherical bearings, which have been extensively used in bridge construction.

Slab bearingsThe building construction bearings of the LASTO®STRIP and LASTO®FOL range deve-loped and tested by mageba transfer the building loads and movements in a con-trolled and almost constraint-free manner to the adjacent construction unit. They thereby ensure the durability of the buil-ding.

Bearing types

Deformation bearings Sliding bearings

Elastomeric- bearing

Sliding plate

Elastomeric bearing with vulcanised sliding sheet of PTFE

Grease

Slab bearings Wall bearingsPoint bearings

4

Bearings

Our products at a glanceLASTO®BLOCK F

LASTO®FLONPAD GP6

LASTO®FLONPAD GP9

LASTO®BLOCK B - to EN 1337

LASTO®FLONBLOCK - to EN 1337

RESTON®SPHERICAL - to EN 1337

RESTON®POT - to EN 1337

NR Solid elastomer or CR rubber

PTFE coated CR / SBR solid elastomer

Stainless steel sliding plate

LASTO®STRIP NS

LASTO®STRIP SS

Solid elestomer (EPDM)

SBR Elastomer granulate

Grease

Reinforced solid elastomer (NR or CR)

Grease

Unreinforced deformation bearings Dimensions ≤ 1.20 x 1.20 mInstallation height 5-30 mmLoad range ≤ 20 N/mm2

Unreinforced sliding bearings Deformation capacity ±25 mmInstallation height 8 mmLoad range ≤ 5 N/mm2

Reinforced sliding bearings Deformation capacity ±25 mmInstallation height 11 mmLoad range ≤ 15 N/mm2

Reinforced deformation bearings Dimensions ≤ 1.00 x 1.00 mInstallation height 180 mmLoad range ≤ 20 N/mm2

Reinforced deformation sliding bearings, with or without sliding plate Dimensions ≤ 1.00 x 1.00 mInstallation height 180 mmLoad range ≤ 20 N/mm2

Sliding bearingsDimensions Project-specificInstallation height ≥ 67 mmLoad ≤ 250,000 kN

Sliding bearingsDimensions Project-specificInstallation height ≥ 76 mmLoad ≤ 100,000 kN

Deformation bearingsDeformation capacity 2.5 / 5 mmInstallation height 5 / 10 mmLoad range ≤ 720 kN/m

Noise-damping deformation bearingsDeformation capacity 5 mmInstallation height 10 mmLoad range ≤ 180 kN/m

Stainless steel sliding plate

Concave lower steel element

Convex upper steel element with polished hard chromium

PTFE coated CR / SBR solid elastomer

Stainless steel sliding plate

PE soft foam

PE soft foam

Stainless steel sliding plateGrease

PTFE coated CR / SBR solid elastomer

Elastomeric pad

Cover

Pot

Poin

t bea

rings

Slab

bea

rings

5

Bearings

Our products at a glanceLASTO®STRIP LS

LASTO®STRIP TS

LASTO®FOL

LASTO®STRIP PE

LASTO®WALL C

LASTO®WALL G

PE film Grease

Edge adhesion

PE soft foam

Cork-Elastomer-Granulate

Solid elastomer in EPDMPE soft foam

PS sliding plate

PTFE coated CR/SBR elastomer core

PS sliding plate

LASTO®STRIP XM

XPS soft foam

PTFE coated, reinforced CR elastomer core

PS sliding plate

SBR Elastomer granulate

Solid elastomer in EPDM

Grease

Grease

Grease

Sliding bearingsMovement capacity ±17.5 mmInstallation height 6 mmLoad range ≤ 720 kN/m

Permanent sliding bearingMovement capacity ±17.5 mmInstallation height 7 mmLoad range ≤ 760 kN/m

Permanent sliding bearingMovement capacity ±120 mmInstallation height 11 mmLoad range ≤ 1,500 kN/m

Noise-damping separation bearingsInstallation height 5, 10, 20 mm

Film sliding bearings Installation height 1.5 / 3.5 mmLoad range ≤ 10 N/mm2

Noise-damping wall bearings of Cork-Elastomer-GranulateInstallation height 3.2, 5, 8 mmLoad range ≤ 5 N/mm2

Noise-damping wall bearings of rubber granulate Installation height 3, 4, 6, 8 mmLoad range ≤ 5 N/mm2

Noise-damping wall bearings of solid elastomerInstallation height 3 mmLoad range ≤ 5 N/mm2

LASTO®WALL E

PE soft foam

Slab

bea

rings

Wal

l bea

rings

Special constructionsWith larger sliding paths and loads, several or eccentrically arranged supporting cores are available upon request. Further informa-tion is provided in the product brochures.

LegendNR - Natural rubberCR - Chloroprene rubberSBR - Styrene-Butadiene-rubberEPDM - Ethylene-Propylene-Diene-MonomersPTFE - Polytetrafluorethylene

6

4m*

Z

0.6‰

0.5‰

0.4‰

0.3‰

0 5 10 15 20 25 300

5

10

15

20

Bearings

The basics of bearing selection and use

Mov

emen

t res

ultin

g fr

om s

hrin

kage

[mm

]

* Slabs of 0.25m thickness or less, in high buildings, with insufficient subsequent treatment (curing)

Distance I [from Z, in m]

low slab thickness, dry environment *

high slab thickness, humid/wet environment

Expansion due to temperature is general-ly only significant for external parts of a structure or unheated rooms.

Important: For thermally uninsulated buildings such as multi-storey car parks or storage halls, only high-durability LASTO®STRIP TS sliding bearings should be used.

Rotation of slabsAssuming a deflection of l/200, the rota-tion angle will in normal circumstances (residential or office building with normal use) typically not exceed 20 ‰.

Rigid zoneDepending on a building’s geometry, lo-cation and vertical loading, horizontal loading of approximately 10% of vertical loading can typically be assumed as a first estimate. These horizontal loads must be resisted by a rigid zone or core of the building, such as a lift shaft. Only deformation bearings, and not sliding bearings, should be used in the rigid zone.

Shrinkage and creepFor slabs with a thickness of up to 25cm in apartment or commercial structures, shrinkage of up to 0.6 ‰ can occur. The amount of shrinkage depends on slab thickness and the prevailing humidity; the drier and thinner a slab is, the more shrin-kage can be expected.

Temperature

Temperature: ∆l= αt x ∆t x lαt: Coefficient of expansion due to temperature 10-5/oC ∆t : Change in temperature [oC]

Shrinkage: ∆l= 0.6‰ x l∆l: Change in length [m]l : Distance from the move ment “zero point” [m]Source: SIA 262 and DIN 1045-1 for slabs with unfavourable edge conditions

Example:Floor plan of a residential building

Legend: Deformation bearings

Sliding bearings

* within a radius of 4m of the fixed point, the deformation capacity of a 5mm LASTO®STRIP NS bearing will accommodate the shrinkage that can be expected.

Arrangement of bearingsBased on the calculated movements, thebearing type is determined as follows.

1 Determine the building’s movement “zero point” / fixed point (e.g. centre of lift shaft or stairwell)

2 Show zones on a floor plan3 Allocate bearing types to each load-

bearing wall (one type per wall sec-tion) or pile

4 Summarise types and total lengths

7

5

20

40

80

160

320

640

10 20 40 80 120 16000

15

100

1

2

3

4

5

6

200 400 800 1600 3200 64000

7

8

①

②

③

①

④⑤

αx,y

vx,y vx,y

Bearings

Point bearings - for a long life

Further informationPlease refer to the appropriate product brochure for detailed information about individual products.

Non-standard designsmageba can design and manufacture be-arings to satisfy all conceivable load and movement demands. Of course, all rele-vant project requirements will be consi-dered.

Pre-selection of the point bearing type1. Selection of the required load-carrying capacity ① (Example: Fz = 235kN, A= 140x140mm)σz = 235:1402 = 12N/mm2

2. Selection of the required horizontal de-formation capacity ② (Example: vx,y = 40mm)

3. Selection of the required bearing type from the diagram ③ (Example: LASTO®FLONPAD GP9)

4. Determine rotation capacity from the second diagram ①/④(Example: αerf = 2.5%)Intersection ⑤ is below the rotation boundary line for the LASTO®FLONPAD GP9 → condition fulfilled5. Check the rotation capacity of the selected bearing with the help of the pro-duct brochure (Example: LASTO®FLONPAD PG9)

Product Function Standard Bearing type

Facilitate deformations

Facilitate sliding

Facilitate rotations

LASTO®BLOCK F X X Deformation bearingLASTO®FLONPAD GP6 X X High durability sliding bearingsLASTO®FLONPAD GP9 X X High durability sliding bearingsLASTO®BLOCK B X X EN 1337 Deformation bearingLASTO®FLONBLOCK X X EN 1337 High durability sliding bearingsRESTON®POT X X EN 1337 Fixed or high durability sliding bearingsRESTON®SPHERICAL X X EN 1337 Fixed or high durability sliding bearings

RESTON®POT

FLONBLOCK

LASTO®BLOCK B

LASTO®BLOCK F

Load-carrying capacity σz (= ) (at service level) [N/mm2]

RESTON®SPHERICAL

FLONPAD GP6

FLONPAD GP9

Def

orm

ation

/ S

lidin

g di

stan

ce v

x,y [m

m]

Rota

tion

capa

city

αx,

y [%]

Load-carrying capacity Fz (at service level) [kN]

Fz

A

LASTO®FLONPAD GP9

RESTON®SPHERICAL

RESTON®POT

LASTO®BLOCK F

LASTO®BLOCK B / LASTO®FLONBLOCK

LASTO®FLONPAD GP6

8

50

1

2

3

4

100 3002000 400 7600

150 500 600

5

100 760540

5

10

20

25

40

0

80

160

120

④

①

⑤

αx

①

②

vx vx

③

Bearings

Slab bearings – tried and tested for decades

Rota

tion

capa

city

αx [%

]

LASTO®STRIP NS 10

LASTO®STRIP NS 5 / LASTO®STRIP LS

LASTO®STRIP XM

Load-carrying capacity Fz (at service level) [kN/m]

LASTO®STRIP TS

Non-standard designs Designs with eccentrically arranged or seve-ral cores and further useful information can be found in the individual product brochures.

Further informationDetailed information about the individual products can be found in the appropriate product brochures.

Selection of slab bearing type1. Selection of the required load-carrying capacity ① (Example: 350 kN/m)

2. Selection of the required horizontal deformation capacity ② (Example: 10mm)

3. Selection of the required bearing type from the diagram ③ (Example: LASTO®STRIP LS)

4. Check rotation capacity from the second diagram ①/④ (Example: LASTO®STRIP LS)

5. Selection of the bearing with a load capacity higher than the requirement ① from the product information (Example: with wall width 175mm → LASTO®STRIP LS 720-175)

Def

orm

ation

vx [m

m]

LASTO®STRIP LS

LASTO®STRIP XM

LASTO®FOL

LASTO®STRIP NS 10mm high / SSLASTO®STRIP NS 5mm

Product Function Bearing type Max. pour height over the bearings

Cent

ral

load

be

arin

g

Faci

litat

e

de

form

ation

s

Faci

litat

e sli

ding

Faci

litat

e ro

tatio

ns

Soun

d

in

sula

tion

Sepa

ratio

n

LASTO®STRIP NS X X X Deformation bearing 0.35mLASTO®STRIP SS X X X X Noise damping deformation bearings 0.35mLASTO®STRIP LS X X X Sliding bearings 0.35mLASTO®STRIP TS X X X Sliding bearings 0.35mLASTO®STRIP XM X X X Sliding bearings 2.50mLASTO®STRIP PE X X X X Separator bearings for non-load-bearing walls 0.35mLASTO®FOL X X Sliding bearings without rotation capacity 1.00m

Load-carrying capacity Fz (at service level) [kN/m]

RESTON®SPHERICAL Spherical bearingsRESTON®POT Pot bearings

In 2007, mageba supplied the world’s largest pot bearing with a load ca-pacity of 210,000 kN for the Convention Center in Hong Kong.

10

6

9

12

15

3.2 5.0 8.0 3.0 4.0 6.00

8.0

4

5

6

7

3.2 5.0 8.0 3.0 4.0 6.0 8.0 3.0

1 2

Bearings

Wall bearings – for a quiet building

Stre

ngth

1) [N

/mm

2 ]D

ynam

ic sti

ffnes

s [M

N/m

m3 ]

Load capacityLASTO®WALL C and G are suitable for multi-storey building with up to 8 storeys. The adjacent diagram shows the calcula-ted load-carrying capacity of brick-work fxk according to SIA 266:2003 [N/mm2] when using a LASTO®WALL wall bearing under the brick-work. Testing by p+f Sursee proved that brick walls with and without wall bearings offer the same load-carrying capacity.

Product overview

Dynamic stiffnessat 50 Hz and 1 N/mm2 pressure

1 The brick wall did not suffer any damage after the compression test with wall bearing. The picture shows the most critical, lowest brick.

2 Installation on site

Product Thickness [mm] MaterialLASTO®WALL C 3.2, 5, 8 Elastomer-Cork-GranulateLASTO®WALL G 3, 4, 6, 8 Elastomer-GranulateLASTO®WALL E 3 Elastomer

LASTO®WALL C LASTO®WALL G LASTO®WALL E

LASTO®WALL C LASTO®WALL G

1) Load-bearing capacity of a brickwork wall with wall bearings2) Load-bearing capacity of a brickwork wall without wall bearings

2)

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Civil products

mageba – Solutions for bridge construction

Bridge bearings- Pot bearings- Spherical bearings- Elastomeric bearings- Disc bearings- ILM bearings- Deformation bearings- Special bearings

Seismic protection / Structural protection- Hydraulic dampers- Shock transmission units- Preloaded spring dampers- Spring disc dampers- Lead rubber bearings- Fuse-Box for expansion joints

Monitoring & Services- Structural health

monitoring- Inspections- Refurbishments- Testing

Expansion joints- Single gap joints- Modular expansion joints- Sliding finger joints- Cantilever finger joints- Mat joints- Railway joints

Gateway Bridge, Australia

Öresund Bridge, Denmark/Sweden Wallersbach Bridge, Germany

Chongming Bridge, China

Pont de Normandie, France Tsing Ma Bridge, Hong Kong

Bandra-Worli Sea Link, India Vasco da Gama Bridge, Portugal

Golden Ears Bridge, Canada Krka Bridge, Croatia

Audubon Bridge, USAPont de la Poya, Switzerland

Companies & agents worldwide AustraliaAustriaBelarusCambodiaChinaChileColombiaCosta RicaCroatia Czech RepublicDenmarkEcuadorEgyptEstoniaFinlandFranceGermanyGhanaGreat BritainHong KongIndiaIndonesiaIranIsraelItalyJapan

JordanKuwaitLatviaLithuaniaNetherlands New ZealandNigeriaNorwayOmanPeru PolandRomaniaRussiaSerbiaSingaporeSouth AfricaSouth KoreaSpainSwedenSwitzerlandThailandTurkeyUAEUkraineUSAVietnam

Companies of mageba group

mageba distributors / licensees

Version 2012.09

engineering connections®

mageba headquarters mageba companies / subsidiariesSWITZERLANDmageba saRte. de Montheron 8D 1053 Cugy VD - SwitzerlandTel. +41 21 731 07 10Fax +41 21 731 07 11batiment@mageba.ch

GERMANY mageba gmbhHans-Böckler-Str. 1237170 Uslar - Germany Tel. +49 5571 9256 0Fax +49 5571 9256 56hochbau-uslar@mageba.ch

GERMANY mageba gmbhSteinbeisstrasse 4073730 Esslingen - Germany Tel. +49 711 758844 0Fax +49 711 758844 56hochbau-stuttgart@mageba.ch

AUSTRIAmageba gmbhSeglerweg 16972 Fussach - AustriaTel. +43 5578 75593Fax +43 5578 73348info@mageba.at

SWITZERLANDmageba saSolistrasse 688180 Bülach - SwitzerlandTel. +41 44 872 40 50Fax +41 44 872 40 59hochbau@mageba.ch

RUSSIAmageba MoskowRegus Business Centre CitydelZemlyanoy val, 9, 4th floor105 064 Moskau, RussiaTel. +7 495 967 93 20Fax +7 495 967 97 00info@mageba.ch

RUSSIAmageba St. PetersburgRegus Austrian Business Centre Nevsky Prospekt 55, lit. A, 3rd floor191025, St. Petersburg, RussiaTel. +7 812 313 92 81Fax +7 812 313 91 00info@mageba.ch

INDIAmageba bridge products Pvt. Ltd.45, Jhowtala Road, 3rd Floor700 019 Kolkata - IndiaTel. +91 33 229 00 250Fax +91 33 229 00 254info@mageba.in

CHINAmageba (Shanghai) Ltd.No. 388 Bei Huan RoadShanghai (201402) - ChinaTel. +86 21 5740 7637Fax +86 21 5740 2783 819info@mageba.cn

SOUTH KOREAmageba (Korea) Co. Ltd.Hanshin Intervalley24 Bldg. East Hall, #1708-9 707-34, Yeoksam 2-Dong Gangnam-Gu, Seoul 135-918Tel. +82 2 2183 2020 Fax +82 2 2183 2022info@mageba.co.kr

TURKEYmageba A.Ş.Marmara Geri Dönüşümcüler San.Sit. Şekerpınar Mah. Ayçiçeği Sk. No:17 Çayırova / Kocaeli, TurkeyTel. +90 262 658 23 80 Fax +90 262 658 23 81info@mageba.com.tr

USAmageba USA LLC575 Lexington Avenue, 4th FloorNew York, NY 10022Tel. +1 212-644-3335Fax +1 212-644-3339info@magebausa.com

USAmageba USA LLC188 Hillsdale AvenueSan Jose, CA 95136Tel. +1 408 281 9700Fax +1 408 281 9701info@magebausa.com

Switzerland www.mageba.ch