Structural Steel Frame Installation

Overview

• Structural steel frame installation is a coordinated effort involving various components.
• Key focus on the nomenclature of elements and their assembly process.

Foundation and Base

• Columns attach to foundation using anchor bolts.
  • Supplied by the steel fabricator, installed by concrete contractor.
  • Different shapes and sizes; specified by the structural engineer.
  • Accuracy is critical as they are embedded in concrete.
  • Setting plates are supplied to ensure proper spacing.

Superstructure Installation

• Begins after anchor bolts are set and foundation cured.
• Columns:
  • Fabricated from tube steel or I-beams.
  • Tube steel: labeled by shape, size, and wall thickness.
  • I-beams: labeled with shape letter, depth in inches, weight per lineal foot.
  • Feature base plates for attachment and connection points for upper elements.

Horizontal Structural Elements

• Primarily I-beams, sometimes tube steel for horizontal elements.
• Cross-sectional bracing via tube steel.
• Steel channels may be used for non-extensive loads (e.g., canopies, doorways).
• All components are loose fit initially.

Assembly Process

• Columns are plumbed and horizontal sections squared.
• Connections tightened, missing bolts installed.

Secondary Support Elements

• Typically bar joists, fabricated differently.
• Tagged for identification (manufacturer, sizing, placement).
• Lateral bracing installed linking joists, creating a system.

Completing the Framework

• Corrugated metal deck installed on horizontal framework.
  • Acts as sheathing/floor decking; unites framing system, reduces lateral movement.
  • Provides support for roofing and flooring.

Final Steps

• Final tighten and torque of bolted connections.
• Completion of weld joints, process known as "detailing the steel."

Conclusion

• Introduction to structural steel frame construction.
• Provides foundational knowledge to generate further questions and learning.