EN 1495:1997+A2:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hebebühnen - Mastgeführte KletterbühnenMatériels de mise à niveau - Plates-formes de travail se déplaçant le long de mât(s)Lifting platforms - Mast climbing work platforms53.020.99Druga dvigalna opremaOther lifting equipmentICS:Ta slovenski standard je istoveten z:EN 1495:1997+A2:2009SIST EN 1495:1999+A2:2010en,fr,de01-februar-2010SIST EN 1495:1999+A2:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1495:1997+A2
July 2009 ICS 53.020.99 Supersedes EN 1495:1997English Version
Lifting platforms - Mast climbing work platforms
Matériels de mise à niveau - Plates-formes de travail se déplaçant le long de mât(s)
Hebebühnen - Mastgeführte Kletterbühnen This European Standard was approved by CEN on 21 April 1997 and includes Corrigendum 1 issued by CEN on 11 December 1997, Amendment 1 approved by CEN on 1 September 2003 and Amendment 2 approved by CEN on 19 June 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1495:1997+A2:2009: ESIST EN 1495:1999+A2:2010

Structural calculations . 52Annex B (normative)
Special requirements for multilevel work platforms . 66Annex C (normative)
Requirements for electrical and electronic aspects of overload detecting devices . 68Annex ZA (informative)
#Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC$ . 71Annex ZB (informative)
#Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC$ . 72 SIST EN 1495:1999+A2:2010

and # $. The modifications of the related CEN Corrigendum have been implemented at the appropriate places in the text and are indicated by the tags ˜ ™. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). #For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.$ It is a type C- standard related to safety for Mast Climbing Work Platforms. #deleted text$ According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Figure 1 — Typical single mast MCWP
Figure 2 — Typical twin mast MCWP
HAZARDS RELEVANT CLAUSES IN THIS STANDARD
Mechanical hazards (caused for example by:
1.1 Crushing 5.2.1.3; 5.3.2; 5.4.1
1.2 Shearing 5.2.1.3; 5.3.2; 5.4.1
1.3 Cutting or severing 5.3.2; 5.4.1
1.4 Entanglement 5.4.1
1.5 Drawing-in or trapping 5.2.1.3; 5.3.2; 5.4.1
1.6 Impact 5.4.4
1.7 Stabbing or puncture NA
1.8 Friction or abrasion NA
1.9 High pressure fluid ejection 5.9.7; 5.9.8; 5.9.9; 5.9.10 1.10 Ejection of parts 5.2.1.4; 5.2.1.5 1.11 Loss of stability 5.1.5; 5.2.2.4; 5.2.2.5 1.12 Slip, trip and fall 5.2.2.1; 5.3.1
2 Electrical hazards
2.1 Electrical contact 5.8; 7.1.2.7 2.2 Electrostatic phenomena NA 2.3 Thermal radiation NA 2.4 External influences 5.7.15 Annex C
3 Thermal hazards Relevant but not dealt with
4 Hazards generated by noise Relevant but not dealt with
5 Hazards generated by vibration 5.1.2.3.2
6 Hazards generated by radiation NA
7 Hazards generated by materials and substances processed, used or exhausted by machinery:
7.1 Contact with or inhalation of harmful fluids, gases, mists, fumes and dusts 5.9
7.2 Fire or explosion NA
7.3 Biological and microbiological NA
8 Hazards generated by neglecting ergonomic principles in machine design:
(continued) SIST EN 1495:1999+A2:2010

HAZARDS RELEVANT CLAUSES IN THIS STANDARD
8.1 Unhealthy postures or excessive efforts 5.2.1.6; 5.2.5.2; 5.6.2; 5.12; 5.12.8
8.2 Inadequate consideration of human hand/arm or foot/leg anatomy NA
8.4 Inadequate area lighting 7.1.2.6
8.5 Mental overload or underload, stress NA
8.6 Human error 5.2.2.1; 5.12
9 Hazard combinations
5.1.1.1; 5.1.1.2; 5.1.3
10 Hazards caused by failure of energy supply, breaking down of machinery parts and other functional disorders 5.1 10.1 Failure of energy supply 5.2.2.1; 5.6; 5.8.1.4; 5.12.7 10.2 Unexpected ejection of machine parts or fluids 5.9.7; 5.9.8; 5.9.9; 5.9.10 10.3 Failure or malfunction of control system 5.2.1.5 10.4 Errors of fitting 5.1.5.1.5 10.5 Overturn, unexpected loss of machine stability
5.1.1.2; 5.1.5; 5.7 11 Hazards caused by missing and/or incorrectly positioned safety related measures/means
8.3 Neglected use of personal protection equipment 5.12.8; 7.1.2.7; 7.1.2.12 11.1 Guards
11.2 Safety related (protection) devices 5.7 11.3 Starting and stopping devices 5.1.1; 5.3.4.9; 5.12 11.4 Safety signs and signals 5.2.2.7; 7.1.2.9 11.5 Information or warning devices 7.1.2.9 11.6 Energy supply disconnecting devices
5.2.1.2; 5.8.1.2 11.7 Emergency devices 5.5; 5.6 11.8 Feeding/removal means of workpieces
NA 11.9 Essential equipment and accessories for safe adjusting and/or maintaining 5.2.3.1; 5.4.2.10 11.10 Equipment evacuating gases NA
HAZARDS RELEVANT CLAUSES IN THIS STANDARD 12 Inadequate lighting of moving/working area (continued) 7.1.2.6 13 Hazards due to sudden movement instability etc during handling 5.1.5; 5.2.2.1; 5.2.2.3; 5.2.2.4; 5.4.3 14 Inadequate/non-ergonomic design of operating position
14.1 Hazards due to dangerous environments (contact with moving parts, exhaust gases etc) 5.2.2 14.2 Inadequate visibility from operators position 5.12.2; 5.12.5 14.3 Inadequate seat/seating NA 14.4 Inadequate/non-ergonomic design/positioning of controls5.12 14.5 Starting/moving of self-propelled machinery 5.12 14.6 Road traffic of self-propelled machinery 7.1.2.6; 7.1.2.12 14.7 Movement of pedestrian controlled machinery 7.1.2.6; 7.1.2.12 15 Mechanical hazards 5.1.1.1 15.1 Hazards to exposed persons due to uncontrolled movement 5.2.2.1; 5.2.4; 5.3.1.5, 5.4.1; 7.1.2.7 15.2 Hazards due to break-up and/or ejection of parts 5.2.1.4; 5.2.1.5; 5.2.2.3 15.3 Hazards due to rolling over (ROPS) 5.1.5 15.4 Hazards due to falling objects (FOPS) 7.1.2.7 15.5 Inadequate means of access 5.3.3; 5.3.4 15.6 Hazards due to towing, coupling, connecting, transmission etc 5.2.2.6 15.7 Hazards due to batteries, fire, emissions etc NA 16 Hazards due to lifting operations
16.1 Lack of stability 5.1.5; 5.1.1.2; 5.2.2.4; 5.2.2.5; 5.2.5.1 16.2 Derailment of machinery 5.2.2.4; 5.4.1.5; 5.4.2 16.3 Loss of mechanical strength of machinery and lifting accessories 5.1; 5.2.1.7; 5.2.1.8; 5.2.2.2; 5.2.2.3; 5.2.3.2; 5.2.3.3; 5.2.5.2; 5.2.5.3; 5.3.1.4; 5.4.2; 5.4.3 16.4 Hazards caused by uncontrolled movement 5.2.2.5; 5.2.4; 5.4.1; 5.11 17 Inadequate view of trajectories of the moving parts 5.12 18 Hazards caused by lightning 7.1.2 19 Hazards due to loading/overloading 5.7
HAZARDS RELEVANT CLAUSES IN THIS STANDARD 20 Overloading or overcrowding of the carrier 5.1.2; 5.7; 5.10 Annex C 21 Unexpected movement of the carrier in response to external controls or other movements of the machine 5.12.7 22 Excess speed 5.4.1; 5.5; 5.6.3 23 Persons falling from the carrier 5.3 24 The carrier falling or overturning 5.2.2.3; 5.4.1; 5.5; 5.10; 5.11 25 Excess acceleration or braking of the carrier 5.2.2.4; 5.4.3.1.2; 5.4.4 26 Due to imprecise markings 5.2.2.7; 7.2
5 Safety requirements and/or measures 5.1 Structural and stability calculations 5.1.1 General 5.1.1.1 All loads and forces which can occur in any allowed configuration during erection, operation, out-of-service, dismantling and transfer shall be considered. This shall also include inclined or hanging masts. 5.1.1.2 The manufacturer shall be responsible for:  Stability calculations, in order to identify the various configurations of the MCWP and the combinations of loads and deflections, which together create conditions of instability;  Structural calculations, to evaluate the individual forces and to make allowance for deflections. All combinations of forces shall be considered including those which produce the most unfavourable stresses in the components. 5.1.2 Loads and forces The following loads and forces shall be taken into account: 5.1.2.1 Structural loads The masses of the components of the MCWP when they are not moving are considered to be static structural loads. The masses of the components of the MCWP when they are moving are considered to be dynamic structural loads. SIST EN 1495:1999+A2:2010

mp = 80 kg; mass of each person
me = 40 kg; mass of personal equipment (for the first two persons only)
T = mass (kg) of material and equipment on the work platform (excluding personal equipment)
n = number of persons on the work platform The mass of persons and the mass of equipment and material shall act simultaneously. The minimum number of persons shall be: Two (2) for single mast platforms and four (4) for multiple mast platforms. The mass of the personal equipment (me) shall be assumed to act on the point coincident with each of the two persons which give the highest stresses. 5.1.2.2.2 The mass of each person is assumed to act as a point load on the MCWP at a horizontal distance 0,1 m from the upper inside edge of the top guard rail. The distance between the point loads shall be 0,5 m (see figure 3 as an example). 5.1.2.2.3 The mass T shall be evenly distributed over the whole area of the main platform giving a specific load per length t. The centre of gravity of the mass T shall be assumed to act on a point 0,15 B (where B is the width of the main platform) away from the longitudinal centre line of the main platform, on the side giving the highest stresses.
See figure 4. Calculations must allow for the possibility that a reduced load giving an unbalanced loadcase may result in higher stresses in some parts of the MCWP than a balanced rated load case would give. For single mast machines the bending moment, M, on masts and platforms shall be calculated according to formula 1, where Lmax is the greater of the distances L1 and L2 in figure 5. For multiple mast machines the bending moment M, on masts and platforms shall be calculated according to formulas 2, 3, 4 and figure 6. The factors 1,15 and 1,2 are used in the formulas 1, 2, 3, 4 in order to cover the situations in use where, instead of a uniformly distributed load, a concentration of the same load is placed elsewhere within that individual length. SIST EN 1495:1999+A2:2010

Figure 3 — Example of the distribution of persons on the main platform or platform extensions
Figure 4 — Eccentric loading normal to the centre line
Specific load t = LT Formula (1): Mmax = 215,12max××Lt Figure 5 — Loading in the longitudinal direction. Single mast machines
Specific load t = LT Formulas: (2) M1 = 215,121××Lt (3) M2 = 82,122××Lt (4) M3 = 215,123××Lt Figure 6 — Loading in the longitudinal direction. Multiple mast machines SIST EN 1495:1999+A2:2010

Key 1 main platform 2 platform-extension Figure 7 — Long cantilever extensions™ 5.1.2.2.6 Where the manufacturer includes in his design, provision for the use of a handling crane then the mass of the crane and the crane's rated load shall together be treated as part of the rated load of the MCWP. The location of the force resulting from the use of the crane shall be dictated by the manufacturer's chosen mounting positions for the crane supports. 5.1.2.3 Horizontal forces 5.1.2.3.1 Manual forces The minimum value for the manual force is assumed to be 200 N for each of the first two persons on the platform and 100 N for each additional person permitted to be on the work platform. It is assumed that the force is applied at a height of 1,1 m above the floor of the work platform and acts in a horizontal direction. SIST EN 1495:1999+A2:2010

ISO 4302. The windforce coefficient for persons exposed to the wind is 1,0. 5.1.2.5.4 The full area of one person is 0,7 m2 (0,4 m average width × 1,75 m height) with the centre of area 1,0 m above the work platform floor. 5.1.2.5.5 The exposed area of one person standing on a work platform behind an imperforate section of fencing 1,1 m high is 0,35 m2 with the centre of area 1,45 m above the work platform floor. 5.1.2.5.6 The number of persons directly exposed to the wind is calculated as: a) The length of the side of the work platform exposed to the wind, rounded to the nearest 0,5 m and divided by 0,5 m, or b) The number of persons allowed on the work platform if less than the number calculated in a). 5.1.2.5.7 If the number of persons permitted on the work platform is greater than in 5.1.2.5.6 a), a reducing coefficient of 0,6 may be applied to the extra number of persons. 5.1.2.5.8 The wind force on exposed equipment and material on the work platform is calculated as 3 % of the mass (T), acting horizontally at a height of 1,0 m above the work platform floor. 5.1.2.6 Loads and forces occurring during transfer conditions Inertia forces plus any load permitted by the manufacturer on the work platform shall be taken into account when the MCWP is subject to transfer conditions. 5.1.2.7 Erection and dismantling loads The load for which the MCWP has been designed during erection and dismantling. Erection load may be higher than rated load. If the handling crane, as carried in 5.1.2.2.6, is used during erection and dismantling of the MCWP, then the crane's mass and the rated load shall together be treated as part of the erection load. 5.1.2.8 Out of service wind loads Whilst out of service, with the work platform in a safe position, the wind pressure for the calculations shall be in accordance with table 3. The limiting wind pressure shall be considered in the most unfavourable direction. SIST EN 1495:1999+A2:2010

Height of member above ground level (m) Wind Velocity (m/s) Wind Pressure {N/m2) 0 to 20 over 20 to 100 over 100 35,8 42 45,9 800 1100 1300 NOTE The wind values given in table 3 are minimum values for the central European area and at low altitudes. In special cases, e.g. coastal areas or at higher altitudes, information set out in specific national standards shall be used until relevant European standards are available.
5.1.2.9 Buffer zones Buffer forces shall be calculated taking into account the characteristics of the buffer. 5.1.2.10 Action of the safety means according to 5.5 To determine the forces produced by an operation of these means, the sum total of all travelling masses shall be multiplied by a factor of 2. A lower factor, but not less than 1,2 may be used if it can be verified by test under all conditions of loading up to 1,5 times the rated load. 5.1.2.11 Inaccuracies in setting up For the purposes of calculation an allowance of an additional 0,5° shall be made to allow for user inaccuracy when erecting the mast. 5.1.3 Load combinations and safety factors The load combinations to be taken into consideration shall be as follows: Load combination A1: MCWP in service without wind, static. Load combination A2: MCWP in service without wind, dynamic. Load combination B1: MCWP in service with wind, static. Load combination B2: MCWP in service with wind, dynamic. Load combination B3: MCWP during erection or dismantling. Load combination B4: MCWP during transfer condition. Load combination C1: MCWP striking the buffer whilst in service. Load combination C2: MCWP during action of the safety means whilst in service. Load combination C3: MCWP out of service. SIST EN 1495:1999+A2:2010

Load combination Loads Ref. clause A1 A2 B1 B2 B3 B4 C1 C2 C3 Structural loads 5.1.2.1 X X X X X X X X X Rated load 5.1.2.2 X X X X
X X
Horizontal forces 5.1.2.3 X
X
Dynamic forces 5.1.2.4
X
X X X
In service wind loads 5.1.2.5
X X X X
Loads and forces during transfer condition 5.1.2.6
X X
Erection and dismantling loads 5.1.2.7
X
Out of service wind loads 5.1.2.8
X Buffer forces 5.1.2.9
X
Action of safety means 5.1.2.10
X
Inaccuracies in setting up 5.1.2.11 X X X X X X
Table 5 — Safety factors for structural steels
Load case Safety factorA1, A2 1,5 B1, B2, B3, B41,33 C1, C2, C3 1,25
Load case Safety factorA1, A2 1,7 B1, B2, B3, B41,55 C1, C2, C3 1,4
5.1.4 Structural calculations See Annex A (informative). 5.1.5 Stability calculations 5.1.5.1 Calculation of forces 5.1.5.1.1 Forces causing overturning moments shall, when created by structural masses, be multiplied by a factor of 1,1 and when created by rated loads be multiplied by a factor of 1,2. It must be remembered here that an inclination of mast from the vertical will result in an increasing overturning moment as the work platform travels upwards. All forces causing stabilizing moments shall be multiplied by a factor of 1,0. 5.1.5.1.2 Wind forces shall be multiplied by a factor of 1,2 and assumed to be acting horizontally. 5.1.5.1.3 Horizontal forces as detailed in clause 5.1.2.3 shall be multiplied by a factor of 1,2 and assumed to be acting in the direction creating the greatest overturning moment. 5.1.5.1.4 Forces according to 5.1.2.6 shall be treated in the same way as specified in 5.1.5.1.1, 5.1.5.1.2 and 5.1.5.1.3 as appropriate. 5.1.5.1.5 Inaccuracies in setting-up according to 5.1.2.11 shall be taken into account in the stability calculation. 5.1.5.2 Calculation of overturning and stabilizing moments 5.1.5.2.1 The maximum overturning and corresponding stabilizing moments shall be calculated about the most unfavourable tipping lines. The calculations shall be made with the MCWP in the most unfavourable configurations with the maximum allowable inclination of the chassis defined by the manufacturer. Every load and force combination including inaccuracy in setting-up shall be taken into account in their most unfavourable combinations. In each case the calculated stabilizing moment shall be greater than the calculated overturning moment. SIST EN 1495:1999+A2:2010
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