In our calculations of loads on racks, we use a unique software. The software we use is certified by such organizations as Rostechnadzor, Rosatomnadzor and Rosstroynadzor. In terms of performance, the software package is not inferior to leading foreign analogues. At the same time, it has the highest flexibility, takes into account domestic standards and has a very user-friendly interface. In addition, the software used is regularly updated and can take into account, among other things, foreign standards.

It is no secret that in order to accurately calculate the load on a rack, it is not enough to use only rod or truss models. It is necessary to know exactly the real rigidity of the rack connections, such as fastening the beam to the rack and the rack to the thrust bearing. Accurate analysis The parameters of these connections are also carried out by our software package. Such calculations require significant computer power; for this, the workstations of our computer center have enormous resources.

In cases where an urgent decision is required, Engineers from RTC TECHNOVIK can quickly take measurements and build a design model of a metal structure without leaving the site, providing preliminary data for approval to the client within one working day.

After receiving confirmation from the client, work on the details of the project continues in the settlement center of the TECHNOVIK company.

Our additional service is to carry out physical and chemical analysis of materials (steels and alloys).

Samples of materials (fragments of posts, beams, decking, rolled products) are sent to our testing laboratory for testing. spectral analysis, as well as tensile, bending, torsion tests, impact strength and etc.

Such analysis increases the accuracy of calculation results and also helps operating organizations double-check the integrity of suppliers of racking equipment.

Experienced specialists who carry out quality measurements of the structure eliminate errors in calculations. The involvement of accredited laboratories ensures the reliability of test results for shelving materials. The programs used are licensed by Rostechnadzor and Rosatomnadzor. If necessary, we carry out tests individual elements racks for complete confidence in the calculation results.

Intra-warehouse logistics is a matter of paramount importance for large retail and industrial complexes. Ergonomic distribution of goods, materials and production products guarantees their safety and ensures comfortable conditions for the operation of the enterprise as a whole. Our company provides a range of services for the installation and organization of warehouse equipment.

Services "PromRack"

The company's specialists manufacture racks taking into account operational parameters the room in which they will be installed. At the same time, we take into account the nature of the materials or goods that will be stored on the shelves.

We accept orders for the production of many types of racks:

• deep;
• shelf;
• mezzanine type;
• self-supporting;
• gravitational;
• printed;
• shuttle processing;
• for car windows, tires and hoods;
• mobile

In addition, the material base and high-precision equipment of PromStellazh allow us to accept orders of any complexity, therefore the company’s portfolio includes samples of the manufacture of non-standard structures of complex configurations.

Besides, Maintenance completed racks are also produced by our company.

It includes:

• Troubleshooting.
• Repair work.

The area of ​​competence of PromStellazh is also technical examination rack structures of any complexity.

How we are working

Behind long time During their stay in the profession, our specialists have gained some experience in this area. First of all, we form technical task and we work out the layout of shelving structures in the customer’s premises. In this case, taking measurements is free.

Having determined the scope of work, our specialists perform strength calculations of the racks. Calculation of load characteristics. Taking into account all the data, the most durable and ergonomic shelving structure is created, which will be equally successfully used in the archive, in a warehouse or in an office.

When manufacturing racks of a certain type, our specialists take into account not only permissible loads, but also all technical nuances. For example, the calculations take into account the likelihood of seismic impact. Calculation of the potential threat from seismic impact is carried out in accordance with modern standards.

In addition, the hypothetical probability of various emergency situations is taken into account. For example, we take into account the level of damage to the structure from impacts from lifting equipment and try to make the structure as strong and resistant to mechanical stress as possible.

During operation, situations with shelves collapsing may occur. Possible damage from falling loads can be very serious, so our design work involves calculating the permissible load on the rack.

Legal and scientific basis

Professional modeling of rack structures involves the use of government regulations.

When carrying out technical assignments, the specialists of the PromStellazh company are guided by the provisions regulating the operation of prefabricated structures:

• GOST R 55525-2017 (general technical recommendations).
• 15512 (code for the design and use of steel permanent storage systems).
• SNiP dated 2.01.07-85 (rules for taking into account the impact of the environment on racking structures).

Professional technique

The main method in the work of PromStellazh specialists is the calculation of finite elements. The technique is common to solve professional tasks in area structural mechanics. This method can have many options, which are selected based on the geometric design and physical parameters of the materials used.

In addition, the finite element method, which PromStellazh specialists use, is characterized by optimal consideration of the interaction of the racking system itself with the environment.

Our professionals focus on the following environmental indicators:

• Mechanical.
• Corrosive.
• Temperature.
• Boundary.

The advantage of using the finite element method is its high invariance and automation of each calculation stage. Select only correct option Our professional experience and knowledge of mechanical features helps us to correctly calculate the maximum load on the shelf.

The technique has been certified federal service for supervision:

• Ecological.
• Atomic.
• Technological.

At the same time, this method of calculating finite elements is regulated by certification passports:

• No. 148 (has no deadline).
• No. 200 (valid until 06/23/2025).
• No. 345 (valid until 10/21/2023).

Thus, our shelving design projects take into account the parameters of the building, the volume/weight of stored products, the nominal load on the shelf, and the recommendations of the Scientific and Technical Center for Environmental and Nuclear Safety.

Prices for calculating rack strength

Advantages of contacting PromStellazh

Our company has been present on the market of similar services for 14 years. The accuracy of order production is guaranteed by the company's solid production base. At every stage of order fulfillment, we practice careful quality control. The undoubted advantage of contacting our company is its loyal pricing policy towards consumers.

Cooperation with PromStellazh guarantees each client comprehensive equipment for warehouses and any production premises. In addition, the company can order components for various types shelving. Including: holders and ties, fastenings and limiters.

The company's portfolio includes many positive feedback our clients, including:

• "Slasti Trading House"
• LLC "TD Petelino"
• Hobby World LLC.
• PJSC Uralkali.
• BOSCH REXROTH LIMITED.

The PromStellazh company values ​​​​the respect of its consumer audience. Therefore, our clients have the opportunity to order post-warranty service for installed structures.

For ease of service, we use the “Delivery” service. You can leave an online request for a finished rack with us, and we will deliver it to the specified point.

The advantages of contacting the company are:

• Loyal prices.
• Large range of manufactured products.
• High quality installation work.
• Compliance with the deadlines specified in the contract.
• Professional approach.
• Strict compliance with existing GOST standards.

By contacting the specialists of the PromStellazh company, you are guaranteed to receive a professional solution to your problem. With us you will put your products on the shelves!

You can quickly design any shelf width in our online constructor on home page website and immediately find out its cost.

Shelves made of chipboard (chipboard)

Based on our experience and the experience of others furniture factories we have found the optimal length for different thicknesses material for construction depth 300-400 mm:
- chipboard 16mm to 600 mm;
- chipboard 18mm to 800 mm;
- Chipboard 22mm up to 1000 mm.

Each shelf can support up to 40 kg and will not look “tired” over the years. Our recommendations, of course, do not mean that you need to strictly use our parameters and no freedom to own decisions.

If you make a shelf wider than the recommended size, then over time, under the influence of air humidity, weight and other factors, the structure will begin to sag. If you still want to make the shelf wider than recommended, then use a cabinet with back wall made of cabinet material or HDF - this will significantly add rigidity to the structure. We recommend following this recommendation even if the shelves are not that long!

Using the example of 16 mm chipboard, we can say that if you decide to make a shelf from 600 to 800 mm, then you can load up to 30 kg on it, a shelf from 800 to 1000 mm can be loaded up to 20 kg, over 1000 mm up to 10 kg. Moreover, shelves of such length can bend over time even under own weight.

Glass shelves

At a depth of 250-300 mm, the maximum weight distribution is the following shelf lengths:
- Glass 6 mm to 305 mm;
- Glass 10 mm to 610 mm;
- Glass 12 mm to 914 mm.

Items on glass shelves Under no circumstances should you throw it, the consequences may be small fragments that will be very difficult to see later.

In the example image below you can see optimal load per shelf depending on its length and thickness:

What about tables?

STATE STANDARD OF THE USSR UNION

RACKS

CALCULATION BASICS

GOST 28766-90

GOSSTANDARD OF RUSSIA

Moscow

1. General provisions 2. Loads and their combinations 3. Calculation of racks with flooring for packaged cargo 4. Calculation of cantilever racks for packaged cargo 5. Calculation of cantilever racks for long cargo Appendix 1. Types and designs of racks Appendix 2. Design of racks and basic concepts

STATE STANDARD OF THE USSR UNION

GOST
28766-90

Date of introduction 01.01.92

This standard establishes the basis for the calculation of steel structures of stationary racks serviced by stacker cranes in accordance with GOST 16553, intended for storing goods in industrial containers in accordance with GOST 14861 and pallets in accordance with GOST 9078, as well as long cargo packaged or placed in special containers in warehouses. The requirements of this standard are mandatory, with the exception of the requirements of appendices 1-2.

1. GENERAL PROVISIONS

Table 1

2. LOADS AND THEIR COMBINATIONS

P 1 =g(Ql 3 +M 3)/H p , (1)

Where g=9.81 m/s 2 - free fall acceleration; Q- standard mass of a unit load, kg (see clause 2.4); l 3 - nominal reach of the load-handling member, m; M 3 - moment of mass of the retractable parts of the load-handling body relative to the plane of the crane tracks, kg × m; H p is the distance of the top rail crane track from the level of the rail head of the ground crane track, m. The load reliability factor is assumed to be 1.25. The load in question is distributed between the upper side rollers of one side according to the lever rule, if the number of such rollers is more than one. 2.11. For types of loads; specified in 2.1-2.10, the design load is defined as the product of the standard load and the load reliability factor. The design load from gravity forces of a group of stored goods for calculating the racks (columns) of the rack is obtained by multiplying the standard load (clause 2.5) by the combination coefficient. 2.12. Design load of the support in the rack ( P 2) when extending the load-handling member of a rack stacker crane in the event of incorrect positioning of the load lifter, Newtons are calculated using the formula

P 2 =N 3 n 3 h 3 /u 3 , (2)

Where N 3 - rated power of the lifting body extension motor, W; n 3 - multiple of the maximum torque of the electric motor; h 3 - efficiency of the lifting mechanism extension mechanism; u 3 - nominal speed of extension of the load-handling member, m/s. 2.13. The design load from the impact of an overhead stacker crane on a dead-end stop installed on a rack is determined in accordance with SNiP 2.01.07-85 “Loads and impacts”, approved by the USSR State Construction Committee. The load is taken into account when calculating the dead-end stop and the elements of its fastening to the crane runway beam, as well as when calculating the braces of the rear plane of racks of versions 1.2; 2.2; 3.2. 2.14. Design wind load acting on the wall enclosing structures of racks of versions 1.4; 2.4; and 3.4, are determined in accordance with SNiP 2.01.07-85 “Loads and impacts”, approved by the USSR State Construction Committee. The unloading effect of wind on the warehouse roof is not taken into account. 2.15 The estimated snow load on the warehouse roof is determined in accordance with SNiP 2.01.07-85 “Loads and impacts”, approved by the USSR State Construction Committee. 2.16. Design seismic loads are determined in accordance with SNiP II-7-81 “Construction in seismic areas”, approved by the USSR State Construction Committee. In this case, the coefficient TO 1, taking into account permissible damage to structures, is taken equal to 0.25; odds TO 2 and K f, taking into account the type of structure of the structure, are taken equal to 1.0. Seismic loads can act both in horizontal directions - along or across the rack, and in the vertical direction. The action of forces in each of the three directions is considered separately, i.e. without summing the impact results among themselves. Horizontal seismic loads are considered for all rack designs; in this case, for racks installed at ground level, it is allowed to take into account only the first tone of natural vibrations of the loaded rack, and take the form of deformation of the rack as a straight line to determine the loads acting along the rack, and as for a prismatic console - to determine lateral loads. For racks installed on the floor of a building, the deformation of the building should be taken into account, which is assumed based on the results of calculations of the building for seismic impacts. Design vertical seismic load ( P c) on the console, rack in Newtons, version 3.1; 3.2; 3.3 or 3.4 is calculated using the formula

P c =5 A.K. 1 K 2 K f P , (3)

Where A- coefficient according to SNiP II-7-81; P- design load on the console according to clause 5.1. 2.17. Conditional horizontal load ( R 4) along the rack, in newtons, used to calculate the braces of the rear plane, is calculated by the formula

P 4 =200F × n , (4)

Where F- cross-sectional area of ​​the rack (column) of the rack, cm 2; n- the number of racks along the length of the rack. The specified load is applied if it exceeds longitudinal loads(clauses 2.6; 2.13; 2.16). The load is distributed equally between all braces of the rear plane of the rack located in one tier. 2.18. Instructions for taking into account the gravity forces of stored cargo and the values ​​of load combination coefficients TO And TO t are given in Sect. 3- 5. Values ​​of combination coefficients various types loads for calculating racks (columns) of racks are given in table. 2.

table 2

Load combination coefficient values
for calculating racks (columns) of racks

Table 3

3. CALCULATION OF RACKINGS WITH DECKING FOR
PACKAGED CARGO

Table 4

4. CALCULATION OF CONSOLE RACKINGS FOR
PACKAGED CARGO

Table 5

5. CALCULATION OF CONSOLE RACKING FOR
LONG CARGOES

Table 6

Table 7

ANNEX 1

Information

Table 8

TYPES AND DESIGNS OF RACKINGS

APPENDIX 2

Information

RACKING DESIGN AND BASIC CONCEPTS

1. Schemes of frontal projections of racks are presented in Fig. 1, cross-sectional diagrams of warehouses equipped with racks and stacking cranes are shown in Fig. 2. 2. Shelving types 1 and 2 are a metal structure based on two-branch vertical lattice racks; The pitch of the lattice along the height of the rack may or may not coincide with the pitch of the load-carrying elements. The branches of the racks on the loading side of the rack are called the front branches; their combination forms the front plane of the rack. The rear branches form the rear plane of the shelving. The upper edges of the racks form the upper plane of the rack. In the rear plane, with a certain step along the length of the rack, braces or prestressing braces are installed. Braces are also installed in the corresponding panels of the upper plane of the rack. 3. The load-bearing element of type 1 racks is a flooring consisting of at least two crossbars, which simultaneously perform the function of the longitudinal connections of the rack. Transverse links can be installed between the crossbars, forming a lattice flooring. When installed on top of the specified sheet elements, the flooring is called continuous. 4. The load-bearing element of type 2 racks are cantilever elements attached to the branches of the racks. These elements are usually designed in the form of corners, which simultaneously serve as the bars of the rack's core lattice, but they can also be in the form of short elements. Longitudinal connections connecting the racks are installed in the front and rear planes, and at the top - necessarily. 5. Type 3 rack is a metal structure based on a number of columns equipped with consoles. The rack can be one-sided or two-sided (symmetrical). The columns are interconnected by longitudinal connections and, in separate panels, by braces installed in the middle plane of the columns, conventionally called the rear plane by analogy with paragraph 2. 6. On shelves (consoles) of racks intended for installation on sites with seismicity of 8 and 9 points , stops must be provided to prevent loads from sliding off the shelves (consoles). 7. Versions 1.3; 2.3; 3.3 are blocks of racks connected at the top by cross braces, to which the upper rail crane tracks of rack stacker cranes are attached. In order to avoid the appearance of additional loads on the racks caused by uneven settlement of the foundations, the fastening of the cross braces to the racks (columns) of the racks should be hinged (for example, using a bolt) or use transverse braces of low bending rigidity in the vertical plane. 8. Versions 1.4; 2.4; 3.4 are similar in design to those described in paragraph 7, but additionally have rafter and wall elements for installing enclosing structures of walls and roof. To avoid the appearance of additional loads on the racks and rafters caused by uneven settlement of the foundations, constructive measures should be taken for moment decoupling truss structures and shelving blocks.

Types of shelving

Execution of racks

INFORMATION DATA

Multi-tiered prefabricated metal structures for warehouses are designed, manufactured and installed taking into account the rules regulated by GOST 16140-77. Requirements state standard designed for racks for storing containerized and piece goods.

List of standards and requirements:

The strength characteristics of parts and elements of rack structures must be designed in such a way as to withstand possible loads in accordance with GOST 14757-74.

The curvature of racks and beams when assembled should not exceed 3 mm per 1000 mm of length and 0.1% of the total length.

The twisting of racks and beams around their longitudinal axis should not be more than 0.5 mm per 1000 mm of length and 0.05% of the total length.

Structural elements must be free of defects, cracks, delaminations, burrs, and delaminations. Correspondence of roughness indicators is indicated in GOST 2789-73, welds - GOST 8713-70, GOST 5264-69, GOST 11534-75, GOST 14771-76.

Welded joints should not contain lack of penetration, local sagging, pores and slag inclusions with a diameter exceeding 1 mm, metal undercuts of more than 0.5 mm, cracks of any kind.

Structural parts must be galvanized, either primed and painted, or coated with polymer paint fired in an oven at high temperatures.

Non-perpendicularity of the assembled racks without load to horizontal plane racks should not exceed 1 mm per 1000 mm of length, and under the influence of horizontal load - 4 mm per 1000 mm and 6 mm along the entire length.

A guarantee of the safety of placement and safety of cargo is the implementation of the stipulated rules for the passages between rack structures in a warehouse (other premises) and a set of other regulatory requirements requirements for storage systems. To ensure fire safety during warehouse operation, it is necessary to properly plan the layout of the warehouse complex.

Requirements for placing shelving in a warehouse

To create an optimal environment for efficient work warehouse, which will allow you to quickly carry out loading and unloading operations, store large quantities of goods, it is necessary to rationally arrange the equipment in the room. Minimum distance between metal structures according to the standards is 80 cm. At the stage of general technical planning, working passages and passages are installed required quantity. The main transport passage is located opposite the entrance. Travel distance in indoors with two-way traffic is calculated as follows: double meaning width of the loader plus 0.9 m. Sufficient space must be left for passage, minimum dimensions which is equal to the size of the gate.

List of provisions on the basis of which warehouse furniture should be installed:

If goods are stored in stacks, then the distance between them and the fences is 0.8 m.

Equipped inspection passage (1 m wide) for every 10-12 stacks.

The size of the passage opposite the door is commensurate with its width, but not less than 1 m.

With width warehouse more than 10 m, it is necessary to leave a central corridor of 2.5 m, which will be arranged between the shelving structures.

The passage should be increased if sections with pull-out shelves. One-sided installation of the structure - the increase in passage is equal to half the size of the shelf. Double-sided arrangement of shelving - the expansion of the passage will be commensurate with the full width of the shelf.

By technical standards tolerance, the longitudinal side of the sections can be placed at a distance of 20 cm from the fence. There are exceptions for special cargo that is prohibited from being stored near heat sources (batteries). In this situation, installation is carried out at a distance of 0.8 - 1 m from the wall. The location of evacuation corridors should be planned along the end of the rack structures.

There are places where it is strictly forbidden to place cargo (even temporary) - these are gaps between stacks and lines of movement around the warehouse.

Installation of front-loading systems is regulated by the requirements of GOST R 55525-2013 and is carried out in the following ways:

Wide-aisle - width varies from 2.5 to 3.7 m, the corridor area allows the loader to turn 90º.

Narrow aisle - dimensions range from 1.5 to 1.9 m; a vehicle passage is used to turn the equipment around.

A set of racking equipment allows you to optimize the working space of archive rooms. Thanks to the presence of ergonomic, spacious shelves, you can provide easy access to documentation and improve the organization of your work process.

The order of arranging shelves in archives is fixed normative document SN 426-82:

Shelving should be placed at a distance of 0.75 m;

The clearance between sections is 1.2 m;

The distance between the end of the rack structure and the wall is 0.45 m.

Fire safety requirements

When are they stored in the warehouse? various loads standards must be followed fire safety, which prevent fire and create optimal conditions for prompt evacuation in case of fire. Storage systems must be installed according to the parameters provided for by the requirements of GOST 16140-77. A distance of at least 0.7 m should be maintained between the mounted furniture and walls, columns, and heating elements. The minimum distance between storage equipment and the ceiling or lighting devices is 0.5 m.

Warehouses without division into sections of up to 700 m2 should be equipped with an evacuation corridor, the width of which will be at least 1.5 m. A warehouse with an area of ​​more than 700 m2 is equipped with an additional passage with similar parameters.

Storage systems are installed according to rules that will directly depend on the type of cargo being stored. Storage of tires and other goods is not permitted in the general section. If products made of wool, cotton and other similar materials are stored, then the dimensions of the longitudinal and transverse passages should be at least 2 m, and a gap of at least 1 m should be left between the bale and the lighting elements.

Shelving metal structures are indispensable equipment for managing, storing, replenishing and issuing goods in warehouses. In addition to warehouse logistics, they are actively used by shops, offices, workshops, and trade pavilions for storing various products.

Requirements for pallet racks

Pallet racks are manufactured according to established regulatory standards, which ensures safe operation metal structures and long service life. These requirements define operational rules, completeness, dimensions equipment, technical condition monitoring.

Racks for storing containerized and piece goods comply with the technical conditions for storing products and have permissible dimensions, which are determined by state standards.

In accordance with GOST 16140-77 standards, the dimensions of metal structures can be as follows:

height - 1.8-12.6 m;

according to the maximum load capacity calculated permissible load per cell - from 125 to 4000 kg.

Racks with flooring have the following dimensions:

width - from 0.45-1.35 m;

the racks are located at a distance of 0.9-2.9 m.

Cantilever structures are characterized by the following dimensions:

width range - 0.45-1.35 m;

racks can be located at a distance of 0.75 to 1.8 m.

Metal structures are supplied complete with a passport and assembly drawings. Storage systems that are delivered to the warehouse are presented as a set of elements consisting of structural parts and the necessary fasteners. The selection of component elements is carried out according to the rules - all parts correspond to the configuration of a specific metal structure.

Safety requirements for racks

When using racking systems, you must adhere to following requirements security:

Do not exceed the permissible load capacity of the cell;

Perform processing of protruding parts (chamfer) and corners (rounded);

Ground the structures;

Fix the rack to the supporting surface with a rigid fastening;

The structures should be installed at a distance of at least 1 m from each other;

It is prohibited to operate storage systems with cracked pallets, bent beams, other defects and malfunctions of elements;

The pallet with the goods must have a height less than the pitch of the guides by 10 cm.

Technical condition and control

The strength test of all pallet frontal racks in which individual or packaged cargo is stored is carried out at least once a year. The test consists of applying a force to the cell that exceeds the maximum load capacity by 25% (no more). To preserve the integrity of the structure, time limits have been established - the duration of such a test is no more than 10 minutes.

Horizontal and vertical loads on the structure are carried out in a sequential order. Then they evaluate the condition of the racks and beams, the degree of their deformation, and look at the integrity of the shelves and pallets. If the test is successfully passed, a mark is placed on the metal structures indicating the permissible load.