construction materials metal. structural steel cross section second moment of area
TRANSCRIPT
TED 316 – STRUCTURAL DESIGN
Construction MaterialsMetal
METAL – STRUCTURAL STEEL
Structural steel Cross section Second moment of area
METAL – STRUCTURAL STEEL
Common structural shapes I-beam Z-shape Angle (L-shaped) Channel (U-shape) Tee (T-shaped) Rail (asymmetrical I-beam) Bar, rod, plate Open web
STEEL VS. CONCRETE
Relative cost often dictates use Often used in conjunction Steel better in strength-to-weight ratio Steel can be dismantled more easily If bolts are used the components may
be reused
FIRE RESISTANCE
Loss of strength Critical temperature – typically yield
stress = 60% of room temperature yield stress
Fireproofing materials Concrete structures with rebar Connections are a main concern
METAL – REBAR
Reinforcing bar Tensioning device in concrete and reinforced masonry Ridges added for mechanical strength
METAL - FRAMING
Joists Sills Headers Top plates Diagonal bracing Decking