EN 15620:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ortsfeste Regalsysteme aus Stahl - Verstellbare Palettenregale - Grenzabweichungen, Verformungen und FreiräumeSystèmes de stockage statiques en acier - Rayonnages à palettes réglables - Tolérances, déformations et jeuxSteel static storage systems - Adjustable pallet racking - Tolerances, deformations and clearances53.080Storage equipmentICS:Ta slovenski standard je istoveten z:EN 15620:2008SIST EN 15620:2009en01-januar-2009SIST EN 15620:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15620October 2008ICS 53.080 English VersionSteel static storage systems - Adjustable pallet racking -Tolerances, deformations and clearancesSystèmes de stockage statiques en acier - Rayonnages àpalettes réglables - Tolérances, déformations et jeuxOrtsfeste Regalsysteme aus Stahl - VerstellbarePalettenregale - Grenzabweichungen, Verformungen undFreiräumeThis European Standard was approved by CEN on 13 September 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15620:2008: ESIST EN 15620:2009

Adjustable pallet racking components.55 Annex B (informative)
General safety philosophy.57 B.1 General.57 B.2 Wide and narrow aisle width manoeuvring clearance.58 B.3 Intrusive stacking.58 B.4 Environments with additional risk.59 B.5 Truck requirements.59 B.6 Floor tolerances and deformations.60 B.6.1 General.60 B.6.2 Sloping floors.61 B.6.3 MHE lean.61 Annex C (informative)
Racking measurement surveys.63 C.1 General.63 C.2 Agreed grid lines and datum’s.63 C.3 Principal grid lines and datum's.63 C.4 Measurement survey reports.63 C.4.1 General.63 C.4.2 Measuring conditions.63 Annex D (informative)
Effects of beam hogging and sagging deformations on clearances.64 D.1 Effects of beam hogging and sagging deformations on clearances X3, X4 and Y1, Y2 and Y3 for non cantilevered beams.64 D.2 Effects of beam hogging and sagging deformations on X3 X4 and Y1, Y2 and Y3 for cantilevered beams (P and D stations).68 Annex E (informative)
Additional information for determining dimensions and clearances in the depth of the rack (Z direction).69 E.1 Placement tolerances in the depth of the rack.69 E.2 Larger values of Z2a and Z2b.70 Annex F (informative)
Additional information for very narrow aisle trucks in adjustable pallet racking.72 F.1 General.72 SIST EN 15620:2009

Consideration of tolerances and deformations in determining clearances.74 G.1 General.74 G.2 Storage systems other than single deep adjustable pallet racking.74 Annex H (informative)
Top guide rail tolerance recommendations.75 Bibliography.76
This European Standard is limited to single deep adjustable beam pallet racking operated with industrial trucks or stacker cranes. Drive-in, double deep and satellite systems will be considered for inclusion in the document in the future. This European Standard specifically excludes the tolerances and deformation of the trucks and stacker cranes. It is the responsibility of the truck or stacker crane supplier and the client or user to ensure that the tolerances, deformations and clearances, as quoted in this European Standard for the racking systems, are acceptable for the safe operation of the overall system.
This European Standard gives guidance to be used in conjunction with the latest information from the truck and stacker crane suppliers regarding turning radii, tolerances and deformations of the truck and stacker cranes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. prEN 15512 Steel static storage systems – Adjustable pallet racking systems – Principles for structural design prEN 15629 Steel static storage systems – The specification of storage equipment prEN ISO 3691-3, Industrial trucks – Safety requirements and verification – Part 3: Additional requirements for trucks with elevating operator position and trucks specifically designed to travel with elevated loads (ISO/DIS 3691-3:2007) SIST EN 15620:2009

1 top tie beam 2 double entry run 3 top guide rail 4 frame upright 5 single entry run 6 frame bracing 7 run spacer 8 beam 9 unit load Figure 1 — Racking components SIST EN 15620:2009

Figure 2 — Double deep racking SIST EN 15620:2009

3.8.1 elevational difference dimension in vertical height between two points 3.8.2 flatness surface regularity characteristics over a short distance not related to a datum 3.8.3 levelness surface regularity characteristic related to a datum 3.9 gangway space for movement or transport which does not give access to the picking or loading faces of the storage racking 3.10 location fine positioning local adjustment of the machine with respect to the rack components in the x and/or y directions using sensors on the crane and location devices on the rack 3.11 installers trained and qualified as competent personnel who assemble and build the racking at the site location 3.12 intrusive stacking placement or retrieval of a pallet where the turning radius or length of a lift truck is greater than the aisle width and part of the pallet storage location concerned is used by the truck forks and load when turning to place or retrieve a pallet 3.13 mechanical handling equipment MHE mechanical equipment used to transport the unit load to be stored 3.14
Movement
3.14.1 defined movement DM area where the mechanical handling equipment uses a fixed path NOTE Defined movement areas are usually associated with high-level storage racking. The layout is designed specifically to accommodate the racking and MHE. Storage facilities often combine areas of free movement for low-level activities alongside areas of defined movement for high-level storage.
3.14.2 free movement FM area where the mechanical handling equipment (MHE) travels freely in any direction SIST EN 15620:2009

33433333333331211111111 Key 1 free movement truck access 2 unit load positions in the racks 3 P and D stations 4 very narrow aisle (VNA) Figure 3 — Example of P and D stations 3.16
Racking Classes 3.16.1 crane racking class 100 and 200 pallet racking arranged as a very narrow aisle system and operated by a stacker crane running on a rail and stabilised at the top of the mast by a top guide rail 3.16.2 narrow aisle racking class 400 pallet racking arranged in a similar way to wide aisle racking, but having aisles of a reduced width for use with more specialist types of lift truck 3.16.3 very narrow aisle racking class 300 pallet racking arranged with aisles of a width to cater only for the truck and the unit load width plus an operational clearance where the truck cannot make 90° turns into the rack face for loading and off loading SIST EN 15620:2009

3.21 stacker crane a storage and retrieval machine running on a rail and stabilised at the top of the mast by an upper guide rail 3.22 supplier company that supplies the storage equipment NOTE The Company may be the original manufacturer or an intermediate company acting as a distributor.
3.23 tolerances dimensional variations from the nominal dimension or position arising from manufacture, assembly and erection of handling and storage equipment and other aspects of their environment that may affect the system such as the building, the unit load and the concrete floor 3.24 user company or person who manages and operates the installation on a daily basis and is responsible for the continuing safety of the installation 3.25 very narrow aisle VNA aisle of a width to cater only for the truck and the unit load width plus an operational clearance where the truck cannot make 90° turns into the rack face for loading and off loading SIST EN 15620:2009

Erection tolerances, deformations and clearances have been divided into four groups to cover the general requirements of the four groups of handling equipment. The racking for each classification requires a different standard of installation tolerances, deformations and minimum clearances for safe operation. See Annex B for more information on general safety philosophy.
4.2 Class 100, Stacker crane
Pallet racking arranged as for a very narrow aisle system but operated by a stacker crane. The aisles are wide enough only for the stacker crane or load width plus operational clearance as shown in Figure 4.
Figure 4 — Crane racking
The stacker cranes are automatically controlled, do not have a fine positioning system at the unit load storage positions and are usually for storage systems less than 18 m in height. SIST EN 15620:2009

Crane operated installations where the stacker cranes are automatically controlled and have fine positioning system at the unit load storage positions. Also includes installations where the stacker crane is manually controlled. 4.4 Class 300, Very narrow aisle 4.4.1 General Class 300 very narrow aisle pallet racking is arranged with aisles of a width to cater only for the truck and the unit load width plus operational clearance as shown in Figure 5. The unit loads are handled within the aisles without the need for the truck to turn bodily into the rack face. The trucks are usually guided into and along the aisle length by guide rails or a wire guidance system and have fixed or rising cabs.
Figure 5 — Very narrow aisle racking For truck definitions, see prEN ISO 3691-3. SIST EN 15620:2009

Figure 6 — Wide aisle racking with counter balanced truck 4.5.2 Class 400, Narrow aisle
Narrow aisle racking, Class 400, is pallet racking arranged in a similar way to wide aisle racking but having aisles of a reduced width which can be used with more specialist types of lift truck as shown in Figure 7. SIST EN 15620:2009

Figure 7 — Narrow aisle racking with reach truck SIST EN 15620:2009

E is the elevational difference between adjacent fixed points 3 m apart as shown in Figure 8.
E21X Key 1 floor profile level but not flat 2 floor profile flat but not level X 3 m E elevational difference between adjacent fixed points 3 m apart Figure 8 — Flatness, levelness and elevational difference SIST EN 15620:2009

m ESD mm FM1 Truck without side shift Over 13 2,25 FM2 Truck without side shift 8 to 13 3,25 FM3 Truck without side shift Up to 8 4,0 FM3 Truck with side shift Up to 13 4,0
NOTE Construction to FM1 is more onerous than construction to FM2 and FM3 and should only be specified for installations with a top beam level of over 13 m or where other performance requirements dictate a higher standard of floor flatness. These limits may be relaxed subject to the specifier being satisfied that the system can be operated safely, having regard for the following items: a) type of MHE to be used; b) height of lift; c) localised floor gradients in areas where MHE lifting operations are carried out; d) time dependant changes to the floor surface. ESD is the standard deviation of the L values taken on a 3 m grid. A 3 m grid is a grid of points over the floor area 3 m apart in two directions orthogonal to the building. All points on the 3 m grid shall be within ± 15 mm of the horizontal datum where the datum plane is across the whole or a significant part of the building. SIST EN 15620:2009

The maximum allowable tolerances after erection, with the racks in the unloaded condition, shall be as stated in Tables 2 and 3 and Figure 9. NOTE The installation tolerances are also applicable if racking is dismantled and re-erected.
Table 2 — Tolerances measured horizontally Horizontal tolerance limitations for X Z plane
mm Measuring dimension code and description of tolerance Installation tolerances for racking class 400 δδδδA Variation from nominal dimension of the clear entry width between two uprights at any beam level + / – 3 δδδδAt Variation from nominal dimension of the total rack length, cumulative with the number of bays ‘n’ measured near floor level + / – 3n δδδδB0 Variation from nominal of rack frontage with regard to the installation ’system Z datum line’ concerned, measured near floor level + / – 10 BF Misalignment of opposing rack uprights across a frame + / – 20 Cx Out of plumb of each frame in the X direction + / – H/350 Cz Out of plumb of each frame in the Z direction + / – H/350 δδδδD Variation from nominal dimension of the rack depth (single frame) + / – 6 δδδδE Variation from nominal dimension of the aisle width near floor level + / – 15 δδδδF Variation from nominal of the straightness of an aisle measured near floor level with regard to the ‘aisle system X datum line’. + / – 15 Gz Straightness of the beam in the Z direction + / – A/400
the larger tolerance of the following Jx Upright straightness in the X direction between beams spaced HB apart. + / – 3 or + / – HB/400 Jz Initial curve of an upright frame in the Z direction + / – H/500 Tw Beam twist at mid span 1o per m SIST EN 15620:2009

mm Measuring dimension code and description of tolerance Installation tolerances, for racking class 400
the larger tolerance value of the following Gy Straightness of the beam in the Y direction + / – 3 or + / – A/500 δδδδH1A Variation of the top of the bottom beam level above the base plate + / – 10 δδδδH1 Variation of the top of any beam level H1 above the bottom beam level + / – 5 or + / – H1/500 Hy Variation of support levels between the front and rear beams in a compartment + / – 10
NOTE A measurement survey may be used to measure the installation tolerances and clearances before the racking is loaded. The tolerances stated in this European Standard may not be applicable after the racking has been loaded. Measurement surveys may be completed when required by individual contracts (see Annex C). SIST EN 15620:2009

clear entry between two uprights B0
distance between system Z datum and front of racking BF
misalignment of opposing rack uprights across a frame Cz,
Cx
out of plumb of upright in the z and x directions respectively D
rack frame depth E
aisle width F
distance from aisle system X datum to front face of upright Gz, Gy
straightness of the beam in the z and y directions respectively H
height from top of base plate to top of upright HB
height from top of beam level to top of beam level above Hy
variation of support levels between the front and rear beams in a compartment H1A
height from top of base plate to top of bottom beam level H1
height from top of bottom beam level to top of any other beam level Jx
upright straightness in the x direction between adjacent beam levels Jz
initial straightness of an upright in the z direction L
distance from centre to centre of uprights Figure 9 — Horizontal and vertical tolerances SIST EN 15620:2009

L/200 where
L is the beam span; maximum vertical deflection of a cantilever:
L/100 where
L is the cantilever length from centreline of upright. 5.3.3 Frame deformations in the X and Z directions Limiting deflection values shall be agreed with the specifier on a project by project basis, taking into account the specific requirements of the installation. In the absence of any specific requirements, the following limiting deflection values should be used. The permissible sway (movement) deformation of rack uprights in the X or Z directions, due to the applied loads, shall not exceed 1/200 of the rack height measured from the unloaded racking upright positions on completion of erection. 5.4 Clearances for unit loads and truck handling equipment 5.4.1 Clearances relating to the placement of unit loads The clearances shall be considered in relation to the overall measurement of the pallet and load (i.e. including any load overhang). Maximum dimensions of the unit load shall be specified by the specifier or user. SIST EN 15620:2009

31122X5X6X3X3X4Y3Y3Y3Y3 Key 1 pallet with load overhang 2 pallet without load overhang 3 beam shown without deflection Figure 10 — Horizontal and vertical clearances for trucks Table 4 — Horizontal and vertical clearances in a bay for trucks Beam height Yh from ground up to beam level mm X3 X4 X5 X6 mm Y3 mm 3000 7575 6000 75100 9000 75125 13000 100150
distance between the upright and the straddle truck leg Y4
distance between the underside of the beam and the straddle truck leg Figure 11 — Clearance dimensions for straddle trucks SIST EN 15620:2009

aisle 2
beams 3
pallet with load overhang 4
pallet with no load overhang 5
safety back stop, obstructing bracing or wall behind unit loads 6
no obstructions behind unit loads Z1
clearance between back to back pallets or load make up Z2a, Z2b
overhang of the pallet from the front and rear beams respectively Z3
clearance between pallet or load make up and safety back stop, obstructing bracing or wall behind unit loads Figure 12 — Horizontal clearances in the depth SIST EN 15620:2009
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