Gravity-fed Racking

Push-back Racking

APR12 Gravity-fed racking
The gravity-fed APR12 industrial racking is provided with slideways for the load units on rollers. It is an ideal solution to the problems of high-density storage if drive-in pallet racking is inadequate. The gravity-fed racking permits management of the items stored according to the FIFO (first in - first out) system, an essential solution in the storage of perishable materials and goods with expiry date. Although it is a "through" storage system, and therefore has one loading front and one retrieval front, its structural characteristics ensure maximum stability. The rollerways are provided with speed controllers, which permit uniform pallet movement regardless of their weight and the translation length. The gravity-fed industrial racking is part of the Armes APR12 industrial racking range. APR12 stands for "Armes Pallet Rack" with 12 folds (the upright features 12 roll forming folds). Within the APR12 range, Armes has developed various types of racking for light, medium and heavy loads. They all have the same upright design, with different dimensions and thicknesses in order to offer the most appropriate solution each time. The upright profile is provided with a central stiffening rib. The beam brackets are provided at the front with lugs which fit into the upright holes and, via their U-shaped profile which envelops the upright, fitting into the central rib, guarantee perfect hooking. The gravity-fed APR12 racking consists mainly of sides, beams, spacers and roller units. Armes designs and produces racking for installation in seismic areas, or for use in cold rooms, or for outdoor applications, in addition to self-supporting warehouses, automatic storage systems and all other types of storage systems.

accessories	aisle dividers, pallet retrieval divider, 3-roller entry/exit aisles
available finishing	Powder painting: uprights and pair of beams Sendzimir galvanising: uprights, link bars, diagonals, foot plates and spacers
shelf type	Blue (RAL 5010), yellow (RAL 1007), green (RAL 5021), dark grey (RAL 7016), light grey (RAL 7035)
upright thickness	from 1,5 mm to 2,5 mm
frame load capacity	up to 140 kN (14.000 kg)
rack height	from 4.000 mm to 12.000 mm (bigger dimensions on demand)

CALCULATION
he load capacities of the various parts of the structure take into account the weight of the structure itself and the effective load and are based on the hypothesis of a uniformly distributed load (u.d.l.). Calculation of the load capacity of the frames takes account of the relative working conditions, considering the number, position and height of the load levels, the presence or absence of vertical bracing and the ground anchorage characteristics. These capacities are calculated with the aid of an automatic code developed expressly for the evaluation of pallet racking. The relevant S.I.C.S. software ("Sistema Integrato Calcolo Scaffali" – integrated shelving calculation system) was developed by the industrial shelving section of A.C.A.I. (Associazione fra i Costruttori in Acciao Italiani - Italian Steel Constructors Association). Deflections of the beams are within 1/200 of the span.

The tests carried out and the entire set of algorithms used for the procedure comply with the most authoritative framework of standards and recommendations applicable in Italy and on a European level, including:
• A.C.A.I. CISI Technical Norm for the heavy pallet racks type of 28/06/2002;
• UNI ENV 1993-1-1:1994 and UNI ENV 1993-1-3: 2000 (Eurocode 3 – Steel structures design);
• CNR-UNI 10011:1997 (Steel constructions: instructions for the calculation, the execution, the test and the maintenance);
• CNR 10022:1998 (Cold profiles: instructions for the use in the constructions);
• D.M. 09/01/1996 (Technical Norms for the calculation, the execution and the test of the normal, pre-compressed concrete structures and for the metal structures);
• F.E.M. (Fédération Européenne de la Manutention) recommendations 10-2-02..
Application of the automatic code was supported by a prior series of experimental tests performed at university laboratories and designed to assess the principle geometric and physical parameters.

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