Steel is the central material used in the pre engineered building construction. From the primary members to the supplementary elements, the variety of components of components are fabricated from steel. Selection of steel grade is as important as designing the building model. PEB construction manufacturer choose according to the safety, durability, and economical aspects of the project.
What are Steel Grades
Steel structure construction is the combination of mechanical and civil engineering. In the grading of steel, it is classified according to the chemical composition. The difference in composition ratios change the mechanical properties as well. These properties decide how the steel component will behave under various load conditions, temperature changes, moisture and water exposure. Some of the important properties that a PEB construction manufacturer considers are:
- Yield strength
- Tensile strength
- Ductility
- Toughness
- Weldability
- Corrosion resistance
Factors That Decide Steel Grades
The right combination of these factors enables the engineers to design the structure with the suitable steel grade:
Structural Load Assessment
The type and magnitude of various load profiles are assessed. Dead load, live load, wind, seismic, crane load if applicable and other are evaluated and the steel of proportional strength is selected.
Building Span and Height
Steel of higher strength is required for the larger spans to prevent the primary members from deflection. Reduction of overall weight is also a key objective of the PEB construction companies.
Purpose of the Building
Every pre engineered building type has a distinct purpose. Warehouses store goods so they need larger spans with minimum columns, manufacturing plants may need overhead cranes and support heavy machinery, commercial buildings need more flexibility hence they also have concrete components. Grade of steel is selected as per the unique structural demands.
Environmental Conditions
Coastal environments have a higher risk of corrosion, while the areas with extreme temperatures may need ferritic or martensitic heat-resistant steels. The location of the building plays a crucial role in the steel grade. High wind zone, seismic zone, or industrial environments with chemical exposure are all accounted for.
Design Standards
Specific to the structural steel construction, the grade selection must be in compliance with the national, international and local building codes.
Common Steel Grades Used in PEB Structures
Based on their structural calculations, the PEB construction manufacturer choses the appropriate grade. Some of the common grades used in steel structures are:
- BIS – IS 2062
- ASTM A572 Grade 50
- IS 2062 E350
- IS 2062 E410
- Galvanized E250
- ASTM A36
Conclusion
Steel grades are essential in determining in how durable and reliable the structures will be. Or we can say that the strength, load, structural and environmental requirements are evaluated to decide which grade of steel is suitable for the structure. The national and international organizations standardize the grades for manufacturing, compatibility and ease of construction.
Steelinfra By Teleios is a reliable PEB construction manufacturer with extensive number of projects accomplished. We have a wide experience in steel fabrication and our engineers choose the right steel for every element of the structure.
FAQs
Different structural members experience different stress and exposure to environmental conditions. Selecting different grades optimizes the design.
Building span, design loads, wind and seismic conditions, crane requirements, environmental exposure, and relevant design codes are the factor considered to choose the steel grade.
Not always. Because choosing steel with higher strength than required increases the cost and also load on the structure.
