Why are loads the “backbone” of factory building design?
In steel structure factory buildings, all calculations begin with loads. Loads are the forces that a structure must withstand throughout its service life, from construction to long-term operation.
A factory building may look solid in form, but if the loads are miscalculated, the structure may suffer from excessive deflection, vibration, connection cracks, or rapid deterioration. Therefore, understanding loads is not only for engineers but also crucial for investors when selecting factory building solutions.
Concept of loads in steel structure factory buildings
Loads in a factory building are understood as the total forces acting on the structure, including permanent loads, temporary loads, and special loads.
In design, loads are not considered individually but are combined according to standard load combinations. This article focuses on the nature and impact of each load type, without delving into standard formulas.
Common load types in factory buildings
1. Dead load (self-weight)
This is the load caused by the weight of the structure itself, including columns, rafters, beams, purlins, roofing, wall cladding, and other fixed components.
Dead load always exists throughout the life of the structure and is the basis for calculating other loads. Selecting reasonable steel sections helps control dead load well and optimizes materials.
2. Roof load
Roof load includes:
Weight of metal sheets, panels, and insulation layers
Lighting systems, ventilation, and suspended piping
Although roof load is usually not large, it is distributed over a wide area and directly affects rafters and purlins. If roof load is underestimated, the structure may deflect beyond the allowable limit.
3. Wind load
Wind load is a critical lateral load for factory buildings, especially those with significant height or wide spans.
The impact of wind depends on:
Construction location
Building height
Shape and airtightness of the factory building
Wind not only acts on columns but also affects the bracing system and connections. Proper bracing arrangement helps stabilize the factory building and reduces lateral displacement.
4. Live load
Live load reflects activities inside the factory building, including:
Workers
Equipment and machinery
Stored goods
This load can change over time and depends on the nature of production. In many cases, live load increases when the factory building is renovated or its function is changed.
5. Special loads (reference)
In addition to the above loads, some factory buildings are also subjected to:
Thermal load (high-temperature environment)
Dynamic load due to machinery vibration
Seismic load (depending on the region)
The consideration of these loads depends on the applicable standards and the specific requirements of each project.
The influence of loads on steel structure solutions
Loads determine:
Structural type (rigid frame, steel truss, etc.)
Member cross-sections
Bracing and connection layout
Factory buildings with light loads can use simple solutions. Conversely, factory buildings with heavy or dynamic loads require more complex and rigid structural solutions.
Common mistakes in load assessment
In practice, common mistakes include:
Calculating only current loads, ignoring expansion potential
Underestimating wind and dynamic loads
Not updating loads when changing functionality
These mistakes can cause the structure to deteriorate quickly or require reinforcement after being put into use.
Loads are the foundation of all factory steel structure design. Properly understanding and fully assessing loads helps in selecting safe, efficient, and sustainable structural solutions.
HAI LONG CONSTRUCTION IS A REPUTABLE MANUFACTURER OF STEEL STRUCTURES
Choosing the right steel structure fabrication partner is the deciding factor for the success of every construction project. In a market that increasingly demands high quality, schedule adherence, and safety, Hai Long Steel Structure is proud to be a leading brand trusted by many major domestic and international investors:
- A team of experienced engineers, architects, and experts, knowledgeable in the design and construction of factory buildings and warehouses according to international standards.
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- Possessing a system of modern machinery and equipment, three steel structure factories with a capacity of nearly 45,000 tons/year ensure fast, accurate, and safe construction.
- Professional construction process, strictly managed.
Are you looking for a reputable and professional steel structure manufacturing and erection contractor? Contact Hai Long Construction for free consultation and quotation:
- HAI LONG CONSTRUCTION JSC – MEMBER OF TAIYO GROUP
- Address: Taiyo Building, 97 Bach Dang, Hong Bang Ward, Hai Phong City, Vietnam.
- Hotline: 084 6625 888
- Email: info@hailongjsc.vn
