page 1 of 3 Layher Allround - Description and Technical Specification.doc 23/05/2008, Bb.

Layher ALLROUND® – Description and Technical Specification Description

• system scaffold, modular, ring system • rosettes (“rings”) with 4 big and 4 small holes • distance of rosettes: 500mm • up to 8 connections in one plane • automatic right-angles or flexible angle selection • wedge connection • approved connection with verified load bearing capacities • bolt-free connection technology • durable protection against corrosion by hot-dip galvanisation also in cavities and on

edges • thickness of zinc layer: 60-80μm • maintenance-free • versatile applications as birdcage scaffold, tower scaffold, façade scaffold, service

scaffold, falsework, supporting scaffold, suspended scaffold, stair tower or mobile scaffold

Technical specifications (excerpt)

• tubes for verticals (standards) and horizontal elements (ledgers) have the following properties:

Standard DIN EN 10 219-1:2006-07 Outside Diameter [mm] 48.3 Wall Thickness [mm] 3.2 Yield Stress [N/mm2] 320

• all components are permanently marked among others with “Layher”, month and year of production

• Design load bearing capacities (K 2000+) of the wedge head connection (permissible loads are obtained by dividing the given values by γF=1,5)

Bending moment [kNcm] My,R,d

± 101 kNcm

Normal force [kN] NR,d

± 31,0 kN

Vertical shear force [kN] VZ,R,d

± 26,4 kN

Diagonal force [kN] NV,R,d

Tension: +17,9 kN

Compression*: -16,6 kN ≤ NV,R,d ≤ -5,3 kN

*depending on the length of the diagonal brace

page 2 of 3 Layher Allround - Description and Technical Specification.doc 23/05/2008, Bb.

• Permissible vertical load for a standard 2,0m lift: up to 45 kN 1,5m lift: up to 60 kN 1,0m lift: up to 70 kN

• Permissible vertical load for an adjustable base plate: up to 61 kN (Base plates with a permissible vertical load up to 172,6 kN are available.)

• Permissible tensile force for a standard (steel version) with a bolted spigot: 55,9 kN

• Permissible load for steel decks 0,32m

Bay length [m] 1,57 2,07 2,57 3,07 4,14 perm. q [kN/m2] 18,0 11,4 7,5 5,0 2,0

• Maximum bay length: 4,144m • Layher nominal bay width - effective deck width

Layher nominal

bay width [mm]

732 1088 1400 1572 2072 2572 3072

Number of steel decks

2x 0,32m

3x 0,32m

4x 0,32m

4x 0,32m + 1x 0,19m

6x 0,32m

7x 0,32m + 1x 0,19m

9x 0,32m

Effective deck width [mm]

640 960 1280 1472 1920 2432 2880

• Load classes according to EN 12811-1: Service loads on working areas

• Guardrail height (for O-system): 99cm • Toeboard height: 15cm • Weight of standard components: less than 19kg per item

(Exception: Steel deck 0,32 x 3,07m and access decks with integrated ladder) • Access by ladder, total width: 350mm (aluminium version), 340mm (steel version), step

width: 300mm, rung spacing: 280mm • Access by aluminium platform stair, total width: 637mm, step width: 555mm, step

spacing: 200mm, permissible live load: evenly distributed load of 2,0 kN/m2; maximum load on an area of 0,2m x 0,2m: 1,5kN single load

• Permissible load for a Layher double coupler: 9,1 kN

page 3 of 3 Layher Allround - Description and Technical Specification.doc 23/05/2008, Bb.

European standards EN 12810-1 Facade scaffolds made of prefabricated components. Product specifications EN 12810-2 Facade scaffolds made of prefabricated components. Particular methods of structural design EN 12811-1 Temporary works equipment. Scaffolds. Performance requirements and general design EN 12811-2 Temporary works equipment. Information on materials EN 12811-3 Temporary works equipment. Load testing EN 12812 Falsework. Performance requirements and general design EN 10219-1 Cold formed welded structural hollow sections of non-alloy and fine grain steels. Technical delivery requirements EN 10219-2 Cold formed welded structural hollow sections of non-alloy and fine grain steels. Tolerances, dimensions and sectional properties EN 10025-2 Hot rolled products of structural steels. Technical delivery conditions for non-alloy structural steels EN 10204 Metallic materials. Types of inspection documents EN ISO 1461 Hot dip galvanized coatings on fabricated iron and steel articles. Specifications and test methods EN 74-1 Couplers, spigot pins and baseplates for use in falsework and scaffolds. Couplers for tubes. Requirements and test procedures EN 755-1 Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Technical conditions for inspection and delivery EN 755-2 Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties