Production of Metal Frames for Modular Warehouses

1. The role of the metal frame in modular warehouses and logistics

For logistics companies, distributors, and e‑commerce warehouses in Tashkent, the key task is to quickly increase storage space without long construction projects. Modular buildings on metal frames make it possible to:

• launch new warehouse zones in stages;
• reconfigure and relocate modules when flows change;
• use existing sites and ramps without capital construction.

In this case, metal structures are not just the “skeleton” of the building. The frame of a hangar or modular warehouse must take into account:

• loads from racks, mezzanines, and platforms;
• movement of stackers and forklifts;
• possible future increases in height or length;
• integration with ramps, canopies, staircases, and guardrails.

Therefore, the technology for manufacturing a metal frame always starts with a proper technical specification (TS) and calculations, not with a “standard” solution.

2. Types of metal frames for modular buildings and warehouse expansion

Several basic frame schemes are used for warehouse logistics.

2.1. Hangar‑type frame

Suitable for:

• rapidly erected warehouses;
• temporary but scalable logistics zones;
• shelters for pallet storage and cross‑docking.

Features:

• large‑span trusses (reduce the number of columns);
• possibility of installing canopies over ramps and loading zones;
• adaptation to different types of enclosing structures (sandwich panels, profiled sheet, etc.).

2.2. Modular block warehouses

Used when the warehouse needs to be expanded in stages:

• individual frame modules are joined together;
• easy to add new sections as turnover grows;
• convenient for zoning: dry, cold, high‑value zones, etc.

2.3. Superstructures and extensions to existing warehouses

This is a solution for expansion without stopping operations:

• metal platforms and mezzanines above existing zones;
• additional spans attached to the main warehouse;
• frames for canopies for temporary outdoor storage.

Here it is important to consider the actual condition of the existing building and ramps so that the new metal structure works correctly within the overall system.

3. TS as the foundation: what data is needed to calculate the frame

A quality calculation based on the TS does not start with the question “what is the price per meter,” but with an understanding of how the warehouse will operate.

For a preliminary calculation of the metal frame, it is useful to prepare:

• Site or building plan: dimensions, tie‑in to existing facilities.
• Desired dimensions: length, width, height of the warehouse or module.
• Type of use: pallet storage, small‑cell storage, cross‑dock, sorting.
• Racking layout (if available): number of rows, height, load per level.
• Internal transport: reach trucks, forklifts, carts — affects height, spans, and drive‑through nodes.
• Temperature requirements: ambient, cool, or cold warehouse.
• Required staircases, guardrails, platforms: evacuation, maintenance of utilities.
• Fire safety and operational requirements already set for the facility.

The more accurate the TS, the more accurate the calculation of the weight of metal structures, timelines, and budget.

4. Design: from racking layout to truss and column calculations

4.1. Functional zoning

First, the warehouse logic is formed:

• inbound and outbound goods flows;
• buffer zones;
• packing, sorting, returns;
• technical rooms.

Based on this, spans, column spacing, and the height of the metal frame are defined.

4.2. Calculation of load‑bearing elements

Next, designers calculate:

• trusses — based on spans, roof loads, and possible canopies;
• columns — based on loads from racks, platforms, wind and snow loads;
• bracing and ties — for spatial rigidity of the frame.

Both standard and custom joints are used, depending on the complexity of the facility and requirements for future expansion.

4.3. Integration of auxiliary structures

At the design stage, the following are incorporated:

• staircases and landings;
• guardrails along the perimeter of platforms and mezzanines;
• fastening elements for utilities (lighting, cable ducts, safety systems);
• potential attachment points for canopies and awnings above gates and ramps.

The earlier these elements are accounted for in the metal frame, the fewer modifications and reworks are needed during installation.

5. Selection of materials and sections: what affects reliability and weight

5.1. Types of profiles

The following are used for warehouse frames:

• hot‑rolled I‑beams and channels for columns and trusses;
• cold‑formed profiles for secondary elements and bracing;
• sheet metal for plates, bearing joints, embedded parts.

The choice of sections depends on spans, loads, and height requirements.

5.2. Steel and stainless elements

In most cases, carbon steels are used. Stainless steel is used selectively:

• in areas with high humidity;
• for elements in contact with aggressive environments.

Fully stainless steel frames for warehouses are rare due to cost, but individual joints and fasteners can be made of stainless steel.

5.3. Weight optimization

The designers’ task is to find a balance between:

• strength and rigidity;
• weight of metal structures;
• ease of installation and logistics.

An overly heavy frame increases metal consumption and installation costs; an overly lightweight one creates risks of deformation and limits options for future expansion.

6. Technological cycle: cutting, bending, drilling, welding, assembly

Manufacturing a metal frame for a modular warehouse is a chain of technological operations.

6.1. Preparatory operations

• Laser cutting of sheet metal for shaped parts, base plates, brackets.
• Profile cutting on band saws or other machines according to cutting maps.
• Metal bending to produce cold‑formed profiles, reinforcements, brackets.

Accurate cutting reduces waste and speeds up assembly.

6.2. Drilling and hole preparation

Holes for bolted connections, anchors, and fasteners for enclosing structures are made on drilling and machining centers. This is important for precise fit‑up of elements during installation.

6.3. Welding and assembly of joints

• welding of trusses, columns, frames;
• welding of plates, gussets, embedded parts;
• assembly of standard joints into larger elements.

Different welding methods are used depending on metal thickness and weld requirements.

6.4. Geometry control and trial fit

Before painting, the following are checked:

• compliance of dimensions with drawings;
• geometry of trusses and frames;
• ability to assemble bolted connections.

This reduces the risk of rework on site.

7. Protective coatings and preparation for installation

7.1. Surface preparation

Before applying coatings, the following are performed:

• removal of scale and contaminants;
• abrasive treatment (shot blasting/sandblasting) if necessary;
• degreasing.

7.2. Powder coating and other coatings

For warehouse metal structures, powder coating is often used:

• uniform coverage of complex profiles;
• resistance to abrasion and mechanical impact;
• wide range of colors for zoning and marking.

In some cases, other coating systems are used, depending on operating conditions (outdoor/indoor, humidity, chemical exposure).

7.3. Marking and completeness

Frame elements are marked in accordance with the installation scheme:

• unique part numbers;
• grouping by joints and grid lines;
• packaging of fasteners and small elements by zones.

Proper marking speeds up installation and reduces the likelihood of errors on site.

8. Factors affecting the cost and lead time of metal frame production

Cost and lead time cannot be stated without analyzing the TS. They are influenced by a whole set of parameters.

8.1. Key cost and schedule factors

8.2. Why you can’t rely only on “price per ton”

The same weight of metal structures can result in different budgets:

• complex joints and a high share of manual welding increase labor costs;
• a large number of small parts complicates assembly and logistics;
• non‑standard solutions for tying into existing buildings require additional operations.

Therefore, the correct approach is a calculation based on the TS taking into account production and installation technology.

9. Typical customer mistakes when expanding warehouse space

1. Lack of a clear TS. A request like “we need a 2,000 m² warehouse” without a racking and logistics layout leads to redesigns and delays.
2. Ignoring future expansion. The frame is designed “right to the limit,” with no option to add spans or a superstructure.
3. Separate approach to the frame and racks. The metal frame and racking systems are ordered from different contractors without coordinating loads and joints.
4. Saving on bracing and rigidity. Trying to reduce metal consumption by cutting bracing leads to vibrations, deformations, and operating limitations.
5. Poorly planned staircases and guardrails. Evacuation and service staircases, platform guardrails are remembered at the last moment, after part of the metal structures has already been produced.
6. No data on the existing building. For extensions and superstructures, the actual condition of the foundation and columns is not considered, which complicates anchoring.
7. Tight deadlines without regard to technology. Planning to launch the warehouse “by a specific date” without a buffer for design and metal structure production.

These mistakes can be avoided by involving the metal structure manufacturer early at the warehouse planning stage.

10. Implementation timelines: from request to finished frame

Timelines depend on scope and complexity, but the sequence of stages is roughly the same.

1. Collection of initial data and TS — discussion of warehouse tasks, dimensions, loads, and modular building format.
2. Preliminary calculation — estimation of metal structure weight, indicative timelines, and budget.
3. Design — development of drawings for the frame, joints, and integration with staircases, guardrails, and canopies.
4. Manufacturing — laser cutting, metal bending, drilling, welding, powder coating, marking.
5. Delivery and installation — logistics to the site, phased frame assembly, installation of auxiliary elements.

The more complete the TS at the start and the fewer changes during the project, the more predictable the timelines.

11. FAQ on metal frames for modular warehouses

1. Can the same type of frame be used for different sites?
Basic solutions can be repeated, but each facility requires recalculation for loads, dimensions, and installation conditions.

2. What is more important in calculations: warehouse area or height?
Both parameters are important. Height affects truss type, rigidity, and wind load; area affects the total volume of metal structures and column spacing.

3. Can we first install the frame and then “fit” the racks to it?
Technically possible, but this almost always leads to inefficient use of volume and complicates logistics. It is better to consider the storage scheme from the outset.

4. How quickly can a modular warehouse be dismantled and relocated?
With bolted connections and well‑planned frame marking, relocation is possible, but timelines depend on scope and the new site. This must be included in the TS.

5. Can a modular warehouse be combined with canopies and ramps?
Yes, the frame of a hangar or modular building is often designed from the start with the option to attach canopies, awnings, and additional spans.

6. How should Tashkent’s climate be considered when calculating the frame?
Wind and snow loads for the region, temperature fluctuations, and operating conditions (outdoor/indoor) are taken into account.

7. What if some TS data is not yet known?
You can start with a preliminary calculation based on a minimum set of parameters, but a refined TS will be required to release the metal structures.

8. Is it mandatory to order installation together with manufacturing?
Not mandatory, but joint planning of production and installation makes it possible to optimize joint design, packaging, and marking.

12. How to request a metal frame calculation: what data to prepare

To obtain an accurate calculation of a metal frame for a modular building or warehouse expansion, it is important to provide a basic set of data from the outset.

Submit a calculation request

Recommended information list for the request:

1. Purpose of the facility

   • warehouse type (e‑commerce, distribution, buffer, cross‑dock, etc.);
   • planned flows (pallets/boxes, turnover).

2. Dimensions and layout

   • approximate length, width, height of the building or modules;
   • site plan or existing warehouse layout (if available);
   • information on existing foundations and columns for extensions.

3. Loads and equipment

   • type and height of racks, expected load per level;
   • presence of mezzanines, platforms, intermediate floors;
   • type of equipment (forklifts, reach trucks, stackers).

4. Structural requirements

   • need for staircases, guardrails, service platforms;
   • presence of canopies, awnings, ramps;
   • requirements for potential future expansion.

5. Operating conditions

   • ambient/cool/cold mode;
   • location: inside an existing building or a standalone facility;
   • outdoor/indoor zones, corrosion resistance requirements.

6. Timelines and phasing

   • desired launch date for the first phase;
   • possibility of phased commissioning of modules.

Based on this data, it is possible to perform a TS‑based calculation, propose optimal materials and technologies for metal frame production, and estimate realistic project timelines.